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Home My WebLink AboutSediment Transport in the Tanana River Near Fairbanks AK 1983 ‘ e wsealinent Transport IN THE TANANA RIVER NEAR FAIRBANKS, ALASKA 1980-81 U.S. GEOLOGICAL SURVEY WATER-RESOURCES INVESTIGATIONS REPORT 83=4064 PREPARED IN COOPERATION WITH U.S. ARMY CORPS OF ENGINEERS, ALASKA DISTRICT UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY SEDIMENT TRANSPORT IN THE TANANA RIVER NEAR FAIRBANKS, ALASKA, 1980-81 by Robert L. Burrows and Philip E. Harrold U. S. GEOLOGICAL SURVEY WATER-RESOURCES INVESTIGATIONS REPORT 83-4064 Prepared in cooperation with U. S. ARMY CORPS OF ENGINEERS, ALASKA DISTRICT Anchorage, Alaska 1983 al 7 UNITED STATES DEPARTMENT OF THE INTERIOR JAMES G. WATT, Secretary GEOLOGICAL SURVEY Dallas Peck, Director For additional information write to: District Chief U.S. Geological Survey Water Resources Division 1515 E. 13th Avenue Anchorage, Alaska 99501 Copies of this report can be purchased from: Open-File Services Section Western Distribution Branch Box 25425, Federal Center Denver, Colorado 80225 Telephone: (303) 234-5888 CONTENTS ADS tract ccs ccc csccecccestes cevcss ceectectsesecctecssscescsseegerce Introduction 1... .. ccc cece cece cece ee eee eee eees River hydraulics and sediment transport data ..............e eee eeee — Streamflow. .... cece cece cece cece cece eee e ee eee cece eee e eee eeeeeee Hydraulic geometry ..... cece cece cece cece eee eee cee e eee e ee eeeeees Channel geometry .....ce cece cece cece eee cece eee e eee esse eeeeees Water—surt ce prot i) Cs. acacecece cress sews 55 09s es oe es oe es Bed material ....... ccc cece cece cece eect eee eee eee e ee eeeeee Suspended sediment ...... cece cece cece cee ee eee eee eee e ee eeeaes BEd10ad 1... eee cc ccc cece cece eee eee eee cence eet eee eeeeee Seciment-transport relations ....... cece cee cece cece eee e eens Particle-size data for suspended sediment and bedload ............ Annual sediment 10ads ...... cc cece cece cece cence eee e eee eeeecaee References Cited ... cece cece cece cece cece eee cece eee eee e ee eee eeeeee Figure ILLUSTRATIONS 1. Map showing location of Tanana River and data-collection stations . 2-4. Aerial photographs showing: a e nm 13-30. 13. 14. 15. 16. 17. Oo won oO OPwWwP . Data-collection sites near FairbankS ............ cee e eee eeeeee . Data-collection sites at Goose Island .......... cece ee eee eee eee . Data-collection sites near North Pole ..........ccee ec eeeceeees . Graph showing at-a-station relations of hydraulics and channel geometry, Tanana River at Fairbanks, 1980 ...............000. . Graph showing at-a-station relations of hydraulics and channel geometry, Tanana River at Fairbanks, 1981 .................6. Cross sections of the Tanana River at Byers Island, 1980-1981.. . Cross sections of the Tanana River at Fairbanks, 1980-1981 .... Cross sections of the Tanana River at upper and lower ends Goose Island near Fairbanks, 1980-1981 ..................000- . Cross sections of the Tanana River near North Pole, 1980-1981 . . Cross sections of the Tanana River above Chena River Floodway, near North Pole, 1980-1981 ....... cece cece cee cee ee cee eee eee . Graph showing water-surface profiles, Tanana River at Fairbanks, 1980-1981... ccc cece cece eee eee eee ee eeenee Graphs showing cross-channel particle-size distribution of bed material: Tanana River at Byers Island, south and middle channels, DU 16 1 By raraca oor ee ow sooo ee en ee Tanana River at Byers Island, north channel, July 16, 1980 .... Tanana River at Byers Island, south and middle channels, DUT S05 OB) race cree re 0 eee 0 06 000 ces cs ctieis ese es ccs ees es Tanana River at Byers Island, north channel, July 30, 1981 .... Tanana River at Fairbanks, July 17, 1980 ............. cee e ee eee iii Page RFPOONNNDAONPPWWNR HE rr 13 14 15. 16 17 18 19 20 21 22 23 24 25 26 27 28 29 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31-36. 31. 32. 33. 34. 35. 36. 37-42. 37. 38. 39. 40. 41. 42. Table Summary of discharge measurements made during period of sediment 1. 2. 3. 4. sampling, Tanana River at Fairbanks River River River River River River River River River River Tanana Tanana Tanana Tanana Tanana Tanana Tanana Tanana Tanana Tanana August 5, 1980 Tanana River August 5, 1980 Tanana River August 4, 1981 Tanana River August 4, 1981 Graphs showing sediment-transport rate as Tanana River Tanana River Tanana River Tanana River Tanana River Tanana River ILLUSTRATIONS--Continued at Fairbanks, August 5, 1981 ...................0. at lower end Goose Island, July 18, 1980 at lower end Goose Island, August 3, 1981 at upper end Goose Island, July 18, 1980 ......... at upper end Goose Island, August 13, 1981 ....... near North Pole, south channel, July 23, 1980 .... near North Pole, north channel, July 23, 1980 .... near North Pole, south channel, August 4, 1981 ... near North Pole, north channel, August 4, 1981 ... above Chena River Floodway, south channel, above Chena River Floodway, above Chena River Floodway, above Chena River Floodway, at Byers Island, 1980-1981 at Fairbanks, 1980-1981 at lower end Goose Island, 1980-1981 at upper end Goose Island, 1980-1981 near North Pole, 1980-1981 above Chena River Floodway, 1980-1981 Graphs showing particle-size distribution of bedload; comparison of 1980 and Tanana River Tanana River Tanana River Tanana River Tanana River Tanana River 1981: at Byers Island at Fairbanks 2... .. cece ccc cece cece cece cee ee eees at lower end Goose Island at upper end Goose Island near North Pole TABLES Values of daily mean discharge, 1980 water year, Tanana River at Fairbanks Values of daily mean discharge, 1981 water year, Tanana River at Fairbanks Water surface elevations along a reach of the Tanana River near Fairbanks 5-24. Particle-size distribution of bed material: 5. South channel, 6. Middle channel, Tanana River at Byers Island, July 16, 1980.... Tanana River at Byers Island, July 16, 1980 ... iv 49 50 51 52 53 54 55 56 57 58 59 60 TABLES--Continued Page 7. North channel, Tanana River at Byers Island, July 16, 1980 .... 61 8. South channel, Tanana River at Byers Island, July 30, 1981 .... 62 9. Middle channel, Tanana River at Byers Island, July 30, 1981... 63 10. North channel, Tanana River at Byers Island, July 30, 1981 .... 64 11. Tanana River at Fairbanks, July 17, 1980 ..................0005 65 12. Tanana River at Fairbanks, August 5, 1981 ..................00. 66 13. Tanana River at lower end Goose Island, July 18, 1980 ......... 67 14. Tanana River at lower end Goose Island, August 3, 1981 ........ 68 15. Tanana River at upper end Goose Island, July 18, 1980 ......... 69 16. Tanana River at upper end Goose Island, August 3, 1981 ........ 70 17. South channel, Tanana River near North Pole, July 23, 1980 .... 71 18. North channel, Tanana River near North Pole, July 23, 1980 .... 72 19. South channel, Tanana River near North Pole, August 4, 1981... 74 20. North channel, Tanana River near North Pole, August 4, 1981 ... 75 21. South channel, Tanana River above Chena River Floodway, PCOS TST ere er elela ie belt leet ll ttt LL I 77 22. North channel, Tanana River above Chena River Floodway, PAU Sg aaah aoc dcacpre ig ab retaliate le fal htea epee ga bse eed 78 23. South channel, Tanana River above Chena River Floodway, PUQUS GH 4s 190d eee otic coe wee cs cs Coes ces ovlicw see eerste se eects cls 79 24. North channel, Tanana River above Chena River Floodway, AUGUST 6y Oe ee ee le ee ee ee lat 80 25. Composite particle-size distribution and statistics of bed material, Tanana River, 1980 ........ cece cece eee ee eee e eee 81 26. Composite particle-size distribution and statistics of bed material, Tanana River, 1981 ........ cece cee eee cee eee e ence 82 27-32. Summary of suspended-sediment data: 27. Tanana River at Byers Island ........ ccc cece ee eee ee eee eee eees 83 28. Tanana River at Fairbanks ........ cece cece cee ee cece eee e ee eee 83 29. Tanana River at lower end Goose Island .......... cece eee eee eee 84 30. Tanana River at upper end Goose Island .............. eee ee eeee 84 31. Tanana River near North Pole ....... ccc cece cece ee eee eee eees 85 32. Tanana River above Chena River Floodway ............eeeeeeeeeee 85 33-38. Summary of bedload data: 33.|| Tanana| River jat|Byers Island) |i sll 86 34..-Tanana-River-at Fairbanks 0.0... .ccc cesses ces cose eee sess ese ee 86 35. Tanana River at lower end Goose Island ............ cece eee eee 87 36. Tanana River at upper end Goose Island ............. cee eee wees 87 37. Tanana River near North Pole ....... cece ee eee cece eee eee eees 88 38. Tanana River above Chena River Floodway ..........cceeeceeeeeee 88 39-44. Particle-size distribution of suspended sediment: 39. Tanana River at Byers Island ........ cece cece cece cere eee ees 89 40. Tanana River at Fairbanks ....... cece eee eee eee erence rene eeees 90 41. Tanana River at lower end Goose Island ......... cece eee e eee ee 91 42. Tanana River at upper end Goose Island ......... cece eee e seen 92 43. Tanana River near North Pole ......... cece cece cece c eee e ences 93 44. Tanana River above Chena River Floodway ..........seeecceeeeees 94 TABLES--Continued Page 45-50. Particle-size distribution of bedload sediment: 45. Tanana River at Byers Island ........ cc cece eee e eee eee e eee ees 95 46. Tanana River at Fairbanks .......... cece eee e eee e eee cece eee eens 96 47. Tanana River at lower end Goose Island ............ cece eeeeee 97 48. Tanana River at upper end Goose Island ................ee ee eeee 98 49. Tanana River near North Pole ..... cece cece cece cece cece eeeee 99 50. Tanana River above Chena River Floodway ...........eeeeeceeeeee 101 51-56. Statistical data for particle-size distribution of bedload sediment: 51. Tanana River at Byers Island ........ cc cece cece cece ee eee eens 103 52. Tanana River at Fairbanks ........ cece eee e eee e eee cence eee eeee 104 53. Tanana River at lower end Goose Island ........ ccs c ce eeeeeeees 105 54. Tanana River at upper end Goose Island ........... cece eee ee eee 106 55. Tanana River near North Pole ...... cece cess cece eee e eee ee ees 107 56. Tanana River above Chena River Floodway ...........e.eeeeeeeeee 110 57. Composite size distribution (transport-rate weighted) of bedload sediment, Tanana River, 1980 .......... cece cece ee eee cece eeees 113 58. Composite size distribution (transport-rate weighted) of bedload sediment Tanana River, 1981 ......... cece eee eee eee cece eens 114 59. Sediment transport in the Tanana River at Fairbanks, water year 1980 See eee oan 8s ee eee ET oe ee ew re eee reese eee eeee esse eee 115 60. Sediment transport in the Tanana River at Fairbanks, water year VOB ovo oie oe eee eo 88 ee on eer ere ev oe eee 89-0 8-8 9 w 880 8 oe eer ee eee et 116 CONVERSION TABLE The following factors may be used to convert the International System Of Units (SI) used herein to the inch-pound system of units. Multiply SI units by to_obtain inch-pound units millimeter {rm} 0.0394 inch {in-} centimeter (cm 0.394 inch (in. meter (m) 3.281 foot (ft) square meter (m2) 10.76 square foot (ft2) kilometer (km) 0.621 mile (mi) megagram (Mg) or metric ton 1.102 ton, short cubic meter per second (m3/s) 35.311 cubic foot per second (ft3/s) kilogram per meter per second 0.672 pound per foot per second [(kg/m)/s] [(1b/ft)/s] Suspended-sediment concentrations are given only in milligram per liter (mg/L) because these values are (within the range of values presented) numerically equal to equivalent values expressed in parts per million. LIST OF SYMBOLS A - Cross-section area of flow (m2) D - Mean depth of flow (m) GH - Gage height (m) Q - Discharge or flow rate (m3/s) Vs - Mean velocity of flow (m/s) W - Surface width of flow (m) d - Particle size (mm) Ge, - Bedload-transport rate (Mg/d) Ge. - Suspended-sediment transport rate (Mg/d) r2 - Coefficient of determination National Geodetic Vertical Datum of 1929 (NGVD of 1929): The reference surface to which relief features and altitude data are related; formerly called mean sea level. NOTE: The authors wish to thank Judy C. Fleming for compiling the base map for figure 1 from available maps and photographs. SEDIMENT TRANSPORT IN THE TANANA RIVER NEAR FAIRBANKS, ALASKA, 1980-81 By Robert L. Burrows and Philip E. Harrold ABSTRACT Suspended-sediment and bedload-transport rates for the Tanana River near Fairbanks, Alaska, can be related to water discharge, and annual sediment loads can be com- puted using these relations. For a site at Fairbanks, the annual loads in 1980 were 22.0 million metric tons of suspended sediment and 272,000 metric tons of bedload; in 1981, 27.3 million metric tons of suspended sediment and 333,000 metric tons of bedload passed the Fairbanks site. Data collected at five other locations within a 40-kilometer reach of the river indicate very similar suspended- sediment-transport relations, but bedload-transport relations varied from site to site and between 1980 and 1981. For all sites bedload is usually 1 to 1.5 percent of suspended-sediment load. Particle-size distribution for suspended sediment is similar at all six sites. Median particle size is generally in the silt range; only occasionally is it in the very fine sand range. Median particle size of bedload varied from the gravel range to the medium sand range for five of the six sampling sites in both years. At the sixth site, the farthest downstream location, median particle size of bedload was in the sand range. Bed material particles were somewhat coarser at the upstream sites than at the downstream sites. Coarser particles dominated the deeper portions of the channels and finer material was predominant on the bars and overflow parts of the channels. Median particle size of bed material was generally in the coarse gravel range, but was in the medium sand range at the farthest downstream site. Water-surface profiles show that at all discharges the water-surface slope was steeper at the upstream sites than at the downstream sites. INTRODUCTION To facilitate design and operation of engineering structures and the regulation of gravel extraction along the Tanana River near Fairbanks, the U.S. Army Corps of Engineers, Alaska District, requested that the U.S. Geological Survey collect and evaluate sediment-transport and river-hydraulic data during periods of principal runoff, beginning in 1977. In 1977, data-collection sites were established at the Geological Survey gaging station Tanana River at Fairbanks (station 15485500), and at a site, Tanana River near North Pole, approximately 24 km upstream from the Fairbanks station. In 1980 four additional sampling sites were established: Tanana River at Byers Island, 6 km downstream of the Fairbanks station; Tanana River at lower and upper ends Goose Island, 5.4 km and 6.6 km upstream of the Fairbanks site; and Tanana River above Chena River Floodway, 3.5 km upstream of the North Pole site (fig. 1). Aerial photographs of the sampling sites are shown in figures 2, 3, and 4. Eleven staff gage sites, originally established in 1971, were rehabilitated in 1980 to define water-surface profile data throughout the study area (fig. 1). The four additional sampling sites, combined with the original two sites, were chosen to place data-collection locations above and below major in-river dis- turbances. The Byers Island and Fairbanks sites are downstream and upstream respectively of the lower end of the Tanana River Levee system, part of a Corps of Engineers' flood protection project for Fairbanks. This part of the levee, com- pleted in 1981, cut across a bend of the river and the flow was redirected into a pilot channel (fig. 2). The two sites at Goose Island are downstream and upstream of the most active area of gravel mining from the Tanana (fig. 3). The North Pole and Chena River Floodway sites are downstream and upstream of the end of the Chena River Floodway, another part of the flood protection project completed in 1979. This includes an L-shaped dike extending into the Tanana River (fig. 4). Streamflow data for the Fairbanks station are published annually in the U.S. Geo- logical Survey's "Water Resources Data for Alaska." A previous report by Burrows and others, (1981) presented results of data collected in 1977-79. The current report contains data collected during 1980 and 1981. Data in this report are presented in the International System of Units. Data are presented in tables and graphs and most of the text is devoted to explaining them; the format is consistent with the previous report to make comparison easy. The primary purpose of this report is to provide the Corps of Engineers information pertinent to their design computations and regulation of gravel extraction. The study program is funded by the Corps of Engineers through their Cold Regions Research and Engineering Laboratory, Alaska Projects Office, in a cooperative agreement with the U.S. Geological Survey. All fieldwork and compilation of data were done by the Geological Survey. INSTRUMENTATION AND DATA COLLECTION A continuous record of river stage was collected during the open-water season at the Fairbanks station. This record was analyzed to determine daily mean gage heights and corresponding daily mean discharges. During the winter-flow period, values of daily mean discharge were estimated using periodic discharge measurements and climatological data, and by correlation with data available from the gaging station Tanana River at Nenana. Measurements of depth and velocity and collection of sediment were done from a boat. Stationing on the cross section was determined using sextant readings on a base line or by using an electronic distance measuring unit, while the boat's position was maintained by visual reference to the cross-section end markers. Water-surface profiles were obtained by determining water-surface elevations at 11 gage sites along the study reach over the several hours taken to travel the river. Distances between sites were measured from topographic maps along a base line drawn to follow the general path of the river's main channels. Bed-material samples were collected in July 1980 and August 1981. Both sets of samples were collected at fairly high flow: just before the peak in 1980 and just after the peak in 1981. Samples were obtained at increments of 15 m across the active width of channel. Samples from exposed or shallowly covered bars were collected using a shovel. In channels with flow, samples were collected with either a hand-held (100-mm diameter) or a cable-suspended (200-mm diameter) pipe dredge while wading or from a boat. These samples represent the top 10-20 cm of the bed. A P-61 or a D-49 suspended-sediment sampler (Guy and Norman, 1970) was used to collect depth-integrated water samples for analysis of concentration and particle-size distribution of the suspended sediment. A Helley-Smith type bedload sampler with a 76.2-mm by 76.2-mm orifice (Helley and Smith, 1971) was used to collect bedload samples that were analyzed to determine transport rate and particle-size distribution of the bedload. The Helley-Smith bedload sampler has not been adopted by the U.S. Geological Survey as standard equipment; therefore, results obtained through its use cannot be certified for accuracy. However, the Geological Survey has described provisional methods for the use of the Helley-Smith sampler pending further research and testing. A field calibration of the sediment-trapping characteristics of the Helley-Smith bedload sampler (Emmett, 1980) indicated that no correction factor need be applied to the bedload data as collected. The sampler has been used with apparent success in other rivers that have bedload-transport rates and bedload particle-size characteristics similar to those of the Tanana River (Emmett, 1976; Emmett and Thomas, 1978). Most of the bedload samples were obtained at 15-m increments across the part of stream width where bedload transport occurs. Generally, this resulted in collec- tion of 18 to 20 samples across the stream width. Sampling duration was usually 30 seconds at each location. For most traverses of the stream, each individual bed- load sample was given equal consideration in the determination of average stream- wide transport rate. When duplicate samples were obtained at a given location, these sample data were averaged, and the average value used in the same manner as individual values. Samples collected at each end of the traverses were given the same consideration as other individual samples, regardless of the incremental width of channel associated with the samples collected near each bank. RIVER HYDRAULICS AND SEDIMENT TRANSPORT DATA To facilitate application of the sediment data in this report, appropriate hydraulic data are provided. Data for streamflow, hydraulic and channel geometry, slope, and bed material allow empirical evaluation and interpretation of the sediment-transport data. Streamflow Table 1 presents a summary of discharge measurements made during the periods of sediment sampling in 1980-81 on the Tanana River at Fairbanks. Three of the dis- charge measurements listed in table 1 were made at the upper end Goose Island site; only gage height and discharge are listed for these. Values of daily mean discharge for the Tanana River at Fairbanks are presented in tables 2 and 3 for water years 1980 and 1981 respectively. Because a continuous record of the stage is not obtained for the other five sites, daily mean discharges are not determined for those stations. However, except for a travel-time differ- ence of less than a day, values of daily mean discharge are approximately the same for any of the sites, except Byers Island which is below the mouth of the Chena River. For the purposes of this report the Byers Island site was considered to have the same flow as the other sites, that is, contributing flow from the Chena was not included. Mean daily flow of the Chena ranged from 2 to 15 percent of that of the Tanana at Fairbanks; the mean annual flow 5-6.5 percent. This approximation does not greatly affect later computations. Hydraulic Geometry Data from the discharge measurements in table 1 are plotted as at-a-station values of hydraulic geometry (Leopold and Maddock, 1953) in figures 5 and 6. Relations shown for gage height, velocity, depth, width, and flow area, as functions of discharge were determined by log-transformed, least-squares linear regression of the data. As shown by the present and earlier data (Burrows and others, 1981), there is some annual shifting of the gage height, velocity, depth, and width relations. Despite the instability of these relations, the flow area-discharge relation was quite consistent. This year-to-year consistency for the flow area- discharge relations is indicative of the river's complex adjustments in maintaining a consistent relation of channel size to discharge. Sufficient discharge measure- ments to determine at-a-station relations of hydraulic geometry for the other five sites are not available. Channel Geometry Cross-section data are plotted in figures 7-11, showing channel geometry before, near, and after the peak runoff in 1980 and 1981 at the six sampling sites. These data were collected while sampling bedload, so only those channels with significant flow and transport are shown. Tops of exposed bars are shown as straight lines between channels. At Byers Island, shown in figure 7, there was some change in the main channel and in the middle channel from 1980 to 1981 but no great lateral shifting of the thalweg (thread of maximum depth) in each. Some deposition occurred from station 230 m to 270 m in the main channel in late 1980 and remained through 1981. At the Fairbanks site (fig. 8), during the two runoff seasons there was shifting of bed material from the sand and gravel bar to the thalweg and vice-versa, resulting in a change in the cross-section configuration. The thalweg was at about station 230 m in early 1980, at station 170 m in the fall of 1980, but shifting back to between stations 230 m to 330 m by October 1981. The sand and gravel bar exposed between stations 330 and 370 m in June 1980 was considerably reduced in size by October 1981, by the channel shift to the left as seen in the lower part of figure 8. Much of this lateral shifting occurred during high water, but it can be seen that from July 30 to October 23, 1980 and from July 29 to October 7, 1981, significant shaping of the channel occurred during streamflow recession. That is, even as less transport of bed material occurred in the downstream direction, significant lateral shifting of the channel was still taking place. As previously observed (Burrows and others, 1981), such shifting of the thalweg from one side of the active channel to the other can occur in less than two months. At the lower end Goose Island site (fig. 9, top) there was seasonal scour and fill tending toward net aggradation of the channel, although the general shape remained the same in 1980. In 1981 at this site the channel shape was the same as in 1980 up to the peak but a shift of the thalweg occurred as shown by the October 1981 cross-section plot in the upper right part of figure 9. It is important to note that a significant channel change occurred upstream of this cross section. The aerial photograph (fig. 3) shows a channel bypassing this section to the right or north. This channel in fact was blocked until August 10, 1981, so that until that date all the flow went through the main channel. The lower portion of figure 9 shows the cross section at the upper end Goose Island site. The most prominent change is the growth, especially in 1980, of the sand and gravel bar centered around station 100 m and the concurrent scour of the right part of the channel. At Tanana River near North Pole no significant change occurred in the overall size and shape of the south channel, as seen in figure 10. Large changes took place in the north channels. The most significant change is from stations 300 m to 500 m where several smaller channels were scoured to form a single larger one. More noticeable is the scour occurring at about stations 350 m on the recession, totalling nearly 3.5 m between June 16, and October 15, 1981. At the sampling site above Chena River Floodway, shown in figure 11, seasonal changes in the southern channel can be seen but no major shifting of the deeper portions of the channel occurred. The north channel is split by a centrally located bar; in both channels there has been seasonal variation in channel shape but overall the comparison of the October cross sections indicated deposition has occurred during 1980 and 1981. Water-Surface Profile Table 4 gives water-surface elevations over a range of discharges at gage sites along the study reach. The sites are listed in upstream order and labeled GS-1, and T-1 through T-10. Distance in kilometers from 0.0 km at T-10 is shown for each site. Profiles of the water surface along the right or north bank, for the highest and lowest flows in 1980 and 1981, shown in table 4 are plotted in figure 12. The Reedy show a general reduction in gradient from upstream (T-10) to downstream GS-1). Slopes may be determined for reaches of the river near Byers Island, Fairbanks, Goose Island, and North Pole and Chena River Floodway data-collection sites. For Byers Island the slope was computed between GS-1 and T-1; for Fairbanks, between T-1 and T-2; for both Goose Island sites, the slope was computed between T-3 and 4; and for the North Pole and Chena River Floodway sites the slope was computed between T-7, 8, and 9 and averaged. Mean values of slope at water discharge less than 1,000 m3/s and greater than 1,000 m3/s are shown below: <1,000 m3/s >1, 000m3/s Byers Island 0.000399 0.000382 Fairbanks . 000552 . 000534 Goose Island sites . 000792 - 000726 North Pole and above Chena River Floodway .00118 - 00115 Bed Material Particle-size distributions for bed-material samples at all sites in both 1980 and 1981 are given in tables 5-24. Graphic representation of percentages by weight of four size classes (silt, sand, gravel, and cobble) of each sample across the channel is in figures 13-30. Cross sections shown in the bottom part of these figures are those measured on the same day or within a day of the time of sampling. Exposed bars were surveyed in 1980 when bed-material samples were collected. No data exist for the geometry of exposed bars in 1981 as bed elevations are determined from measured water depths. Particle sizes are finer on shallowly covered or exposed bars and coarser in the main or deeper parts of the channels. It can be seen that- from 1980 to 1981, wherever there was scour in a given part of a section, the bed material at a station was generally coarser, and wherever deposition occurred, the material was nearly always finer. Composite-size distributions of bed material and the associated statistics for each channel at each site are shown in tables 25 and 26. The composites were derived by averaging the percentage, by weight, retained on each size sieve for all samples across the section. Median particle size (dso) of bed material at Byers Island was much finer than that of any other site in both years. In general d59 was coarser in 1981 than in 1980 for all sites with the exception of the south channel near North Pole. For both years, particle sizes of bed material are generally coarser at the upstream sites than at the downstream sites. The composite distributions and statistics are influenced by large areas of shallow bars composed of finer material. For this reason, the decreasing size of bed material in the successive downstream sections is better illustrated by observing the graphs of cross-channel bed-material distribution for the main channel and thalweg at each site (figures 13-30). Suspended Sediment Tables 27-32 list values of instantaneous water discharge, suspended-sediment concentration, transport rate, and median particle size for the sites at Byers Island, Fairbanks, lower end Goose Island, upper end Goose Island, North Pole, and above Chena River Floodway respectively. The suspended-sediment transport rate, Gy, in megagrams (metric tons) per day, is computed as: G, = 0.0864 x concentration (mg/L) x water discharge (m3/s). In 1980, suspended sediment was sampled initially at only the Fairbanks and North Pole sites. Later in the season several suspended-sediment samples were collected at all sites and analyzed for concentration and percentage of silt and sand. In 1981, suspended-sediment samples were collected at all sites and analyzed for concentration and complete particle-size distribution. At Byers Island and at the upper end Goose Island several suspended—sediment samples were collected through ice cover in March 1981. Bedload Tables 33-38 list values of river hydraulics and bedload transport rate for the six sites. Where two or more channels were sampled the combined bedload totals are given rather than for separate channels. The total bedload-transport rate, in metric tons per day, was computed by applying the measured unit transport rate over the width of the channel. Two samples were collected through ice cover at the upper end Goose Island in March 1981. Widths shown are those measured in the field. Sediment-Transport Relations The relations of sediment transport rate to discharge are illustrated in figures 31-36. The data are from tables 27-38. The log-transformed least-squares linear regression describing the relations follow: Byers Island 1981 G. = 1.444 x 1074 q (r2 = 0.976) 2.952 Upper end Goose Island -4 2.791 1981 Ge. = 4.524 x 10 “Q (r2 = 0.987) North Pole = 1.114 x 1074 g3+ 8 (r2 = 0.925) 1980 G. = 2.180 x 1074 g@-889 r2 = 0.988) 1981 Ss Byers Island 1980 G, = 1.052 x 1072 (r2 = 0.894) p= ,0-6776 gi-050 (r2 = 0.421) gi-643 1981 G Lower end Goose Island 1980 G, = 2.191 x 1074 g@-*46 (r2 = 0.879) = 2.491 x 107? g-985 (r2 = 0.816) 1981 G, North Pole 1980 G, = 2.295 x 10° gi- 894 (r2 = 0.500) 1981 Gp = 1.964 x 1072 gi-635 (r2 = 0.720) 1980 G SUSPENDED SEDIMENT (megagrams per day) Fairbanks 1.134 x 1073 g2-689 2= S (r2"= 0.968) Lower end Goose Island 2 ,2.103 1981 G. = 5.761 x 10° Q S(p2 = 0.929) Chena River Floodway -4 2.962 1981 G. = 1.281 x 10 “ Q S(p2 = 0.988) BEDLOAD (megagrams per day) Fairbanks 1980 & 2 gi.642 = 2.008 x 10° (r2 = 0.745) 4 ,2.183 1981 G, = 4.817 x 10°" Q (r2 = 0.644) B Upper end Goose Island 1980 G, = 6.815 x 107° Q@-666 (r2 = 0.844) 1981 Gy = 5.630 x 107° Q (r2 = 0.710) 1.926 Chena River Floodway 1980 G, = 9.424 x 107° g@425 Bie = 0.826) = 2.313 90-9525 r2 = 0,307) 1981 8 Data were insufficient to define relations for suspended-sediment transport rates for four of the sites in 1980: Byers Island, the two Goose Island sites, and the site above Chena River Floodway. Although there are few data points for these four sites in 1980, the range of transport rates is similar to those in 1981 and the 1980 data visually fit the 1981 regressions fairly well. The winter samples of suspended sediment were not included in the regression analysis of the 1981 suspended-sediment data at Byers Island and at upper end Goose Island. Bedload—transport rates vary from site to site and from year to year, but are generally two orders of magnitude less than that of the suspended sediment. In 1980 the highest measured transport rate for flows greater than 1,000 m3/s was at the site above Chena River Floodway; the lowest measured rate was at upper end Goose Island. For flows less than 1,000 m3/s the highest measured rate ocurred at the North Pole site, and the lowest at upper end Goose Island. In 1981 for flows greater than 1,000 m3/s the highest rate was at lower end Goose Island and the lowest above Chena River Floodway. At flows less than 1,000 m3/s both the highest and lowest measured rates were at the Fairbanks site. In March 1981 two bedload samples were collected at upper end Goose Island, but were not included in the regression analysis. Transport rates for those two winter samples are of the same magnitude as transport rates during low-flow open-water conditions. There is considerable consistency to the measured bedload data. Seventy-five percent of the bedload-transport data fall into the tenfold range of 0.5 to 5 percent of the suspended-sediment transport rate. Particle-Size Data for Suspended Sediment and Bedload Tables 39-44 list suspended-sediment particle-size data for the six sampling sites. Samples collected in 1980, as previously noted, were not all analyzed for a standard size distribution (0.002-2.0 mm), and only show the percentage division between silt-clay and sand. Size determination was made by sieve or visual- accumulation tube analysis for particles larger than silt (>0.062 mm), and by pipet analysis for particles of silt size and smaller. All data are expressed in per- centage, by weight finer than indicated particle size. Values of median particle size were determined where possible and are included as part of the suspended- sediment data in tables 27-32. Median particle size is nearly always in the silt range (0.004-0.062 mm) and only occasionally in the very fine sand range (0.062-0.125 mm). Particle-size distribution data for bedload as determined by dry-sieve analysis are given in tables 45-50. Statistics of the particle-size determinations are pre- sented in tables 51-56. This latter compilation is especially useful in visualiz- ing bedload-particle sizes as functions of discharge or bedload-transport rate. The median particle size, deo» from this compilation is included in tables 33-38 as part of the bedload data. Median particle size of bedload at Byers Island was always less than 1 mm. For all other sites the median particle size of bedload was sometimes in the gravel range (2.0-64 mm), but at other times in the medium sand range (0.25-0.5 mm). This large variability in median particle size has been observed previously (Emmett, 1976) and is apparently related to the availability and mobility of particles composing the bed material. The transport-rate weighted, yearly composite size distributions are presented in tables 57-58 and illustrated in figures 37-42. These size distributions are obtained by using the actual weights of samples collected at nearly uniform incre- ments of time over the runoff period. Thus, samples collected at higher transport rates "carry more weight" because their actual weights are greater. For both years, at all sites except Byers Island, 40 to 60 percent of the annual bedload was gravel and, although median particle size varied between 0.4 mm and 5.6 mm from site to site and year to year, most particle-size distributions were very similar. The greatest year-to-year variation was at the Fairbanks site, where deg was 5.6 mm in 1980 but only 0.40 mm in 1981, and percentage of gravel was 60 per- cent in 1980 but only 36 percent in 1981. At Byers Island the bedload was much finer in both years than at any other site. Only 19 and 26 percent of the bedload was gravel in 1980 and 1981 respectively; median particle size was 0.38 mm and 0.31 mm. Annual Sediment Loads Daily mean discharges from tables 3 and 4 can be arranged in order of magnitude to indicate the number of days during which each discharge is equaled or exceeded. The number of days can then be multiplied by the corresponding sediment-transport rate to provide estimates of the annual sediment load (tables 59 and 60). In 1980, 22.0 million metric tons of suspended sediment and 272,000 metric tons of bedload passed the Fairbanks site; in 1981, 27.3 million metric tons of suspended sediment and 333,000 metric tons of bedload passed the site. While not shown, the same type of computations may be made using the same discharge data and transport functions for each site. As can be seen by examining the transport relations in figures 31-36, there should be only slight differences in estimated annual sus- pended sediment loads from site to site, but estimates of annual bedload vary more from site to site and between years. Annual bedloads shown are between 1 and 1.5 percent of the suspended-sediment load. The average bedload-transport rate expressed as a percentage of average suspended- sediment-transport rate, ranges from 1 percent at highest flows to about 4 percent at low flows (column 8 in tables 59 and 60). No percentage is shown for flows less than 200 m3/s; the bedload-transport functions are extrapolated to define the transport rates at much lower flows than those for which bedload data have been collected. High ratios of bedload- to suspended-sediment-transport rate at very low flows, as indicated by the transport functions, may not actually occur. This does not greatly affect the annual load computations, because most of the transport occurs at higher flows. 10 Eighty percent of the bedload is transported during about 30 percent of the year at flows exceeding 600 m3/s. More than half of the suspended-sediment load is trans- ported in about 10 percent of the year at flows greater than 1,300 m3/s. For 8 years of complete record (1974-81) annual mean discharge of the Tanana River at Fairbanks ranged from 475 m3/s to 613 m3/s and averaged 533 m3/s. In 1980 and 1981 the annual mean discharge was 491 m3/s and 532 m3/s respectively. The trans- port functions defined by the 1980-81 sediment data are very similar to those defined by 1977-79 data and the above values of sediment load fall within the previously estimated range of 18-30 million metric tons of suspended-sediment load and 250,000-450,000 metric tons of bedload (Burrows and others, 1981). REFERENCES CITED Burrows, R. L., Emmett, W. W., and Parks, B., 1981, Sediment transport in the Tanana River near Fairbanks, Alaska, 1977-79: U. S. Geological Survey Water- Resources Investigations 81-20, 62 p. Emmett, W. W., 1976, Bedload transport in two large gravel-bed rivers, Idaho and Washington: Third Federal Inter-agency Sedimentation Conference, Denver, Colorado, March 22-26, 1976, Proceedings, p. 4-100 - 4-113. 1980, A field calibration of the sediment-trapping characteristics of the Helley-Smith bedload sampler: U.S. Geological Survey Professional Paper 1139, 44 p. Emmett, W. W., and Thomas, W. A., 1978, Scour and deposition in Lower Granite Reservoir, Snake and Clearwater Rivers near Lewiston, Idaho, U.S.A.: Journal of Hydraulic Research, v. 16, no. 4, p. 327-345. Helley, E. J., and Smith, Winchell, 1971, Development and calibration of a pres- sure-difference bedload sampler: U.S. Geological Survey open-file report, 18 p. Guy, H. P., and Norman, V. W., 1970, Field methods for measurement of fluvial sedi- ment: U.S. Geological Survey Techniques of Water-Resources Investigations, Book 3, Chapter C2, 59 p. Leopold, L.B., and Maddock, Thomas, Jr., 1953, The hydraulic geometry of stream channel and some physiographic implications: U.S. Geological Survey Profes- sional Paper 252, 57 p. 11 7 4 + International Airport! -2 (FAIRBANKS GAGING STATION) | TANANA RIVER AT BYERS ISLAND TANANA RIVER TANANA RIVER AT FALRBANKS TANANA RIVER AT UPPER END AT LOWER END GOOSE ISLAND GOOSE ISLAND yf Floodway 4” , oo ye i ‘AREA OF THIS REPORT EXPLANATION TANANA RIVER “. 3 MILES NEAR NORTH POLE \v A T-1 Gaging site —+ Sediment and hydraulic data-collection site 2 3 4 KILOMETERS TANANA RIVER ABOVE Compiled from U.S. Geological Survey CHENA RIVER FLOODWAY Fairbanks 1:63,360 maps and aerial photography (1982) provided by the Corps of Engineers, Cold Regions Research and Engineering Laboratory 200 300 400 MILES -——__1_F 200 400 600 KILOMETERS Figure 1.--Location of Tanana River and data-collection stations. 13 a FAIRBANKS INTERNATIONAL AIRPORT ae ~ o & fife ¥ ig, 5. 02 , rR TANANA RIVE , > Paversnians LO. . - Ges a ae ee i: OL. “ ; | ern io le % 4 wat APPROXIMATE SCALE 200 400 600 METERS we 4 North Pacific Aerial Photos, Inc. October 20, 1981 Figure 2. -- Data-collection sites near Fairbanks. 14 ST ‘CHANNEL REOPENED AUGUST 10, 1 [saw ees ~ GRAVEL EXTRACTION SITE TANANA RIVER ate * LOWER END GOOSE ISLAND), 1 ) North Pacific Aerial Photos, Inc. October 20, 1981 Figure 3.--Data-collection sites at Goose Island. 9T TANANA RIVER ABOVE CHENA RIVER FLOODWAY North Pacific Aerial Photos, Inc. October 20, 1981 Figure 4.--Data-collection sites near North Pole. LT Tv © vw? 11-177 + TIT 500 T a GH = 3.807 Q0-12132 W = 2,122 Q0-69734 a o a 2 400 2= Ha 9 12=0.986 a r2 = 0.381 ae fa e = 300 ® a oF 8 a 4G : ° E 200 Q = 7 J bt pop pp fp py 9? a 1ool_@ 4 jou a poo 1 4 ft 4 ZS ® “2 e B15 Se J e SB om, e 1000 wml. 7 g FA V = 0.7732 Q0-10595 A= 1.295 Q0-89389 © 10+ r2= 0.238 ] a r2 = 0.960 = 0.9 aneiascnrdisaneyellbenendlennyllionh Joi ot 1 i 4 2 5 3.0 T T T T TTT T T ™% TTTTTT ] Ss F a & 500 eA Db I a &Q 2.0 4 = a Z s E 1.5 47 & Q D=0.6097 Q0-19670 a r2 = 0.657 1.0) pop Docent hil aeled 200 300 500 1000 2000 3000 300 500 1000 2000 3000 DISCHARGE, IN CUBIC METERS PER SECOND Figure 5.--At-a-station relations of hydraulics and channel geometry, Tanana River at Fairbanks, 1980. 8T i . GH = 4.542 Q0.09812 em 9F 12 =0.991 4 om Be Ta Qe 8 4 24 5 7 n 1 p44 4 poy 1 4 1 11] Q 2.0 TTT TI Z =0. 1047 Qo. 30666 @ Ao 2 0.705 e 2a 15 4 Sa 12h 4 >e gel e 4 = 0.9 _t pot 4 1 4 | poi it 1 ft piin tt “lps? | Tf D = 0.2508 Q0.30545 3 r2 = 0.800 & Q 2.0F e@ 4 = a HZ o15b & e | a Qa 1.0L_ l l po 1 1 f pou 1 i ty rit) 300 500 1000 2000 3000 —T T ™1—TT-7 rr ee W = 20.36 Q0.38851 2 400 a r2 = 0.694 3 300 4 ° : 200 Q = 100 1000 TFT 791 7 717] A = 5.105 Q0.69404 12 = 0.925 AREA, IN SQUARE METERS s So 200 Lt a p41 4 | 4 300 500 1000 2000 3000 DISCHARGE, IN CUBIC METERS PER SECOND Figure 6.--At-a-station relations of hydraulics and channel geometry, Tanana River at Fairbanks, 1981. 61 ELEVATION, IN METERS ABOVE NATIONAL GEODETIC VERTICAL DATUM OF 1929 128 127 126 125 124 123 122 121 120 128, 127 126 125 124 123 122 121 120 150 100 50 070 50 100 150 200 250 300 Tv ~T T T T T T 7 T Tf wr 1 / \/ \ fy \ / v \ / Before, near, and after peak runoff, 1980 Water surface Water discharge Symbol. Date elevation (m) Q(m3/s) —__ 7-15-80 127.1 1400 7-29-80 127.4 1650 9-3-80 126.4 714 Before, near, and after peak runoff, 1981 Water surface Water discharge elevation (m) Q(m3/s) 126.5 841 127.6 1650 125.7 354 Symbol Date —_ 6-19-81 7-30-81 10-7-81 350/0 50 100 150 200 250 300 MAIN CHANNEL (Left bank reference) MIDDLE CHANNEL (Left bank reference) STATIONING, IN METERS Figure 7.--Cross sections of the Tanana River at Byers Island, 1980-81. (No cross-sections shown for 6-19-81, and 10-7-81 in middle and south channels). SOUTH CHANNEL (Right bank reference) ELEVATION, IN METERS ABOVE NATIONAL GEODETIC VERTICAL DATUM OF 1929 130 T 129 128- 127 126) aaa Before, near, and after peak runoff, 1980 Water surface Water discharge 1 12a Symbol Date elevation(m) Q(m3/s) yp —— 6-18-80 129.1 1010 / soak ---- 7-30-80 129.7 1640 \ ra 10-23-80 127.8 345 Vv 122L 1 1 1 1 1 1 L 1 1 130; T T [- SS \ 129+ ; ' ”~s 8 i ( 12 rf, r 1 / / 127 v 126 t Before, near, and after peak runoff, 1981 125 Water surface Water discharge Symbol Date elevation (m) Q(m3/]s) 124- ____ 5.99.81 128.4 558 ---- 7-29-81 129.6 1720 1238- o..... 10-6-81 127.9 348 122 lon —t —1_ 1. 500 450 400 350 300 250 200 150 100 50 0 Right bank reference STATIONING, IN METERS Figure 8.--Cross sections of the Tanana River at Fairbanks, 1980-81. 20 TG ELEVATION, IN METERS ABOVE NATIONAL GEODETIC VERTICAL DATUM OF 1929 ‘ 133 ae Pere eee eee eee J Before, near, Ce and after peak 131 : runoff, 1980 130 129 . ; ts Goose Island 128 127 Left bank reference 126 0 50 100 150 200 ELEVATION, IN METERS ABOVE NATIONAL GEODETIC VERTICAL DATUM OF 1929 250 300 STATIONING, IN METERS Before, near, and after peak runoff, 1981 Lower end Goose Island 0 50 100 150 200 250 300 Water surface Water discharge Water surface Water discharge Symbol Date ietion(m) @{mBfa) IMHO! Date aievation(m) (m/s) 7-16-80 132.5 1340 6-19-81 132.0 841 ------ 7-30-80 132.8 1640 — 7-28-81 132.9 1820 sreseesees 10-8-80 131.6 574 seceterece 10-97-81 131.2 354 134) T 134 T T oT T T enn ew ew ee we ew MW em eww www ww eM yw llUlUlUlUlUlUlUlmmhmUCc CO OO OC eR Tr Ow wr wwe wer rere ee22 7? ; 133 133 een aad 132) Before, near, and after peak runoff, 1980 131 130 129 128 Left bank reference 127 Dap 4 1 aor 0 50 100 150 200 250 300 350 400 132 131 130 I | ! | I I I ! ! | 129) - Before, near, and after peak runoff, 1981 128 Upper end Goose Island 127 —L oe 1 + Left bank reference 0 50 100 150 200 250 800 STATIONING, IN METERS Symbol Date Water surface elevation(m) Water discharge Q(m3/s) 7-16-80 133.2 1340 TT eee0-30 133.4 1640 ieva 10-8-80 132.0 574 Figure 9.--Cross sections of the Tanana River at upper and lower ends Goose Island near Fairbanks, 1980-81. Symbol Date 6-19-81 132.5 --—-—-— 17-28-81 133.5 eeeeeee 10-7-81 131.5 Water surface elevation(m) Water discharge Q(m3/s) oS ELEVATION, IN METERS ABOVE NATIONAL GEODETIC VERTICAL DATUM OF 1929 154 153 152 151 150 149 148 154 153 152 151 150 149 148 200 T T T | T T T T T Before, near, and after peak runoff, 1980 Se ie eee eet at) ‘ ’ \ v No! Water surface i elevation (m) Water discharge Q(m3/s) 151.7 742 152.3 1530 151.6 563 1 1 1 —L tL 4 1 T T T T T T T T T T T T T T T T T T Before, near, and after peak runoff, 1981 ee ee ie: CHIC@o Tne Tien i: ani Sa ee Its | og ‘7 \ . , vl Symbol Date Water surf ce Water discharge elevation(m) Q(m3/s) 6-16-81 151.9 756 —--- = 7-31-81 152.3 1550 | ceaaniaal 10-15-81 150.9 342 1 1 1 1 L 4 4 1 1 1 _1 L 1 L 1 1 oe a 150 100 50 0/800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 50 0 SOUTH CHANNEL NORTH CHANNELS Right bank reference Right bank reference STATIONING, IN METERS Figure 10.--Cross sections of the Tanana River near North Pole, 1980-81. &@ ELEVATION, IN METERS ABOVE NATIONAL GEODETIC VERTICAL DATUM OF 1929 160 T = T T T T vi T T T Before, near, and after peak runoff, 1980 159 = 158 157 ~! Water surface Water discharge 156 Symbol Date elevation (m) Q(m3/s) 7-18-80 158.9 1400 155 ---- 8-1-80 158.8 1430 s+ 10-9-80 158.1 563 154 153| n at 1 L 4 4 1 1 St 1 160/— Ti 1 T T T T T T T T T Before, near, and after peak runoff, 1981 169F -------------y-- - p- ------ 9-4 fg \ tl 1 eae 4 158 i A " 157+ "3 iH i u \ 156 oll Water surface Water discharge \ ; Symbol Date elevation(m) — Q(m3/s) \ 155 ' 6-17-81 158.4 773 \ 154 — 7-31-81 158.9 1550 “10-15-81 158.2 342 1568L__s 1 1 1 1 1 —— 300 250 200 150 100 50 0j0 50 100 150 200 250 300 350 400 450 SOUTH CHANNEL NORTH CHANNEL Right bank reference Left bank reference STATIONING, IN METERS Figure 11.--Cross sections of the Tanana River above Chena River Floodway, near North Pole, 1980-81. “TS-O86T ‘syuequeg ye IoATY eueuRy, ‘solyord sovjans-JayeM-—"ZT oANsty SUALANOTIM NI ‘AONV.LSIA VG ELEVATION, IN METERS ABOVE NATIONAL GEODETIC VERTICAL DATUM OF 1929 & & & = = a & ® a & o a 5 & o a So a = Ty T aT T T T T <---T-9 ---Sampling site- Chena River Floodway ---> oa at --- Sampling site-near North Pole--—> <---T-8 S = | n | a <—-T-7 gs ae SS son | 7 wee Y BS 8 zese ° z rb pp Os <---T-6 WARw FZ 7 QO Bo ROAS toe | Se 2 E wm oO <-—-T-5 S — =- <-—-T-4 4--- Sampling site-upper end Goose Island — -- eb <--- Sampling site- lower end Goose Island —- — <---T-3) «--Recording gage --- <---T-2 Se = <---T-1 1 Bb. / 4 i <-- Sampling site-at Byers Island —— <-—-GS-1 SL 1 1 Le 1 | SE GG 100 90 80 70 60 50 40 30 PERCENTAGE, BY WEIGHT 20 10 L 4 fe 1297 128-- 127 126F ELEVATION, IN METERS, NGVD'OF 1929 125 South channel Middle channel 150 Figure 13.--Cro chai 7. 4 Lt 4 1 4_ j_ Ld 100 50 0 0 50 100 150 200 250 STATIONING FROM RIGHT BANK STATIONING FROM LEFT BANK REFERENCES, IN METERS REFERENCE, IN METERS ss-channel particle-size distribution of bed material, Tanana River at Byers Island, south and middle nnels, July 16, 1980. Gravel 2-64 mm Sand 0.062-2 mm Silt <0.062 mm PERCENTAGE, BY WEIGHT ELEVATION, IN METERS, NGVD OF 1929 100 90+ 80- 70 60k 50+ 40h 30- 20 10+ 129 128 127- 126 125- 124 123 a 122 ad 121 4 120 4 ro col asl ns 1 a] 0 50 100 150 200 250 300 STATIONING FROM LEFT BANK REFERENCE, IN METERS Gravel 2-64 mm Sand 0.062-2 mm Silt <0.062 mm Figure 14.--Cross-channel particle-size distribution of bed material, Tanana River at Byers Island, north channel, July 16, 1980. 26 LG I] | | 5 = io e Kal [= ical g Silt a <0.062 mm Zz 1) oO 2 4 a a 4 4 il Lod 128 T T T T T T T ay wy om a South channel Middle channel aS =O 127 4 rc Ag 3a ES =Z 126 54 7 Q WW =| 125 1 — a | 1 Lt —L 1 cl oli 4 150 100 50 0 50 100 150 200 250 300 350 STATIONING FROM RIGHT BANK STATIONING FROM LEFT BANK REFERENCE, IN METERS REFERENCE, IN METERS Figure 15.--Cross-channel particle-size distribution of bed material, Tanana River at Byers Island, south and middle channels, July 30, 1981. 100 1 oop | Gravel 80 4 2-64mm & i go {O a 5 6ok 4 Sand i 0.062-2 mm ical L 4 yo * B Silt Zz 47 7 <0.062 mm 2 & 30h a 20b 10h 0 128 127+ | 4 & & 126+ 4 ee 3 8 o L 2 Q 125 wy z 8 124 4 Zz a Zz S & 123 4 g ie > Q oi a 122 4 121k 1 120 L 4 1 Cc 4 J 300 250 200 150 100 50 0 STATIONING FROM RIGHT BANK REFERENCE, IN METERS Figure 16.--Cross-channel particle-size distribution of bed material, Tanana River at Byers Island, north channel, July 30, 1981. 28 100 90 80 70 30 PERCENTAGE, BY WEIGHT 20 10 Sand Silt T op 0.062-2 mm <0.062 mm Bottom 131, T T mm T T T T T 130 129 128; 127h 126- 125- ELEVATION, IN METERS, NGVD OF 1929 124- 123 122 1 1 _t _L 1 im 1 L 450 400 350 300 250 200 150 100 50 0 STATIONING FROM RIGHT BANK REFERENCE, IN METERS Figure 17.--Cross-channel particle-size distribution of bed material, Tanana River at Fairbanks, July 17, 1980. 29 og ELEVATION, IN METERS, NGVD OF 1929 PERCENTAGE, BY WEIGHT 100 90 80 70h 60- 50F 40 380- 20h 10- 130 129+ 128 4 127b 4 126+ 4 125 or 1 4 1_ 1 4 1 450 400 350 300 250 200 150 100 50 STATIONING FROM RIGHT BANK REFERENCE, IN METERS Figure 18.--Cross-channel particle-size distribution of bed material, Tanana River at Fairbanks, August 5, 1981. ol Sand 0.062-2 mm Silt <0.062 mm Or | ” 80 - Gravel 2-64 mm ST id g 60 4 = r Sand Dy 0.062-2 mm mm 50 = g s 40) 74 < r Silt a sok _| <0.062 mm z = 20b 4 10+ 4 0 J 133 1 r r + 1 132 4 a nN a m 6 a 131- 4 > oS a 2 130 i) = 7 Q = Z a Zz if 4 5 = & < > 4 128 4 ras] r 127- 4 126 1 1 1 1 _t J 0 50 100 150 200 250 STATIONING FROM LEFT BANK REFERENCE, IN METERS Figure 19.--Cross-channel particle-size distribution of bed material, Tanana River at lower end Goose Island, July 18, 1980. 81 PERCENTAGE, BY WEIGHT ELEVATION, IN METERS, NGVD OF 1929 100 . * 80 Cobbles 64-128 mm 70 — i Gravel 2-64 mm 50 40 Sand 0.062-2 mm . z 20+ Silt <0.062 mm “l 0 133-— T T T r + 132 4 131 4 130F 4 129h 4 128- 4 127+ 74 126+ 4 125 1 1 4 L 1 0 50 100 150 200 250 STATIONING FROM LEFT BANK REFERENCE, IN METERS Figure 20.--Cross-channel particle-size distribution of bed material, Tanana River at lower end Goose Island, August 3, 1981. 32 PERCENTAGE, BY WEIGHT ELEVATION, IN METERS, NGVD OF 1929 100 90 80F 70 60 50 40 30 20 10 Top s En oes tam Bottom 137 T T T T T T ] 136- 135- 1 134 133- 132+ 131 L 1 A 1 1 = 0 50 100 150 200 250 300 350 STATIONING FROM LEFT BANK REFERENCE, IN METERS Figure 21.--Cross-channel particle-size distribution of bed material, Tanana River at upper end Goose Island, July 18, 1980. 33 PERCENTAGE, BY WEIGHT ELEVATION, IN METERS, NGVD OF 1929 Gravel Sand Silt 2-64 mm 0.062-2 mm <0.062 mm | T a T T T T 136/ zi 135+ 4 134- 4 133F 4 132- 4 131- 4 oes 0 30 ite iso 300 3B0 300 350 STATIONING FROM LEFT BANK REFERENCE, IN METERS Figure 22.--Cross-channel particle-size distribution of bed material, Tanana River at upper end Goose Island, August 13, 1981. 34 100 90 80 70 60 50 40 PERCENTAGE, BY WEIGHT 30 20 10 0 _ Cobbles Es] Gravel Sand Silt 64-128 mm 2-64 mm 0.062-2 mm <0.062 mm Bottom Top 153 T Te T T 152 4 151 7 150 7 ELEVATION, IN METERS, NGVD OF 1929 149L 1 1 1 1 250 200 150 100 50 0 STATIONING FROM RIGHT BANK REFERENCE, IN METERS Figure 23.--Cross-channel particle-size distribution of bed material, Tanana River near North Pole, south channel, July 23, 1980. 35 98 PERCENTAGE, BY WEIGHT ELEVATION, IN METERS, NGVD OF 1929 100 90 80 70 60 50 40 30 20 10 Cobbles Gravel Sand Silt Top 64-128 mm 2-64 mm 0.062-2 mm <0.062 mm Bottom 153 T T T TT T T T T 1 VY NZ 151 150 L 1 J J J 1 tL 1 1 {_ _L 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 50 149 1 1 STATIONING FROM RIGHT BANK REFERENCE, IN METERS Figure 24.--Cross-channel particle-size distribution of bed material, Tanana River near North Pole, north channel, July 23, 1980. o 100 90 80 70 60 50 40 PERCENTAGE, BY WEIGHT 20 10 Sand Silt 0.062-2 mm <0.062 mm 1537 T T I 4 a Nn ao r 1652 & 6 r 7 a > o Za ws me 151h =| ica} & fa = Zz & z | So 150h & < > i ro a 149L 4 1 Ll 4 250 200 150 100 50 0 Figure 25.--Cross-channel particle-size distribution of bed material, Tanana River STATIONING FROM RIGHT BANK REFERENCE, IN METERS near North Pole, south channel, August 4, 1981. 37 8€ 100 90 80 70 60 50 40 30 20 10 PERCENTAGE, BY WEIGHT Cobbles 64-128 mm Gravel Sand Silt Top 2-64 mm 0.062-2 mm <0.062mm_ Bottom B on ow T T T T T ie T a) ie T T T T T T V VNee™ 149 1 1 1 1 1 1 1 Bl 1 1 1 L 1 1 1 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 50 STATIONING FROM RIGHT BANK REFERENCE, IN METERS B a bo ELEVATION, IN METERS, NGVD OF 1929 a a Oo Figure 26.--Cross-channel particle-size distribution of bed material, Tanana River near North Pole, north channel, August 4, 1981. o PERCENTAGE, BY WEIGHT ELEVATION, IN METERS, NGVD OF 1929 100 90 80 70 60 50r 40- 30 20 10 Cobbles Gravel Sand Silt Top 64-128 mm 2-64 mm 0.062-2 mm <0.062 mm Bottom 160 —T T T T T ' i ' ry 1 159 7 \ ot 158 4 157h 4 156 = 155L L ! 1 I 1 300 250 200 150 100 50 0 STATIONING FROM RIGHT BANK REFERENCE, IN METERS Figure 27.--Cross-channel particle-size distribution of bed material, Tanana River above Chena River Floodway, south channel, August 5, 1980. 39 100 90 80 70 60 50 40 30 20 PERCENTAGE, BY WEIGHT 10 Cobbles 64-128 mm Gravel Sand Silt Top 2-64 mm 0.062-2 mm <0.062 mm 1607 T T T T T T T T | 159 158- 4 157- 4 156 4 ELEVATION, IN METERS, NGVD OF 1929 155 4 14a 1 1 1 1 1 1 a 1 0 50 100 150 200 250 300 350 400 450 STATIONING FROM LEFT BANK REFERENCE, IN METERS Figure 28.--Cross-channel particle-size distribution of bed material, Tanana River above Chena River Floodway, north channel, August 5, 1980. 40 PERCENTAGE, BY WEIGHT ELEVATION, IN METERS, NGVD OF 1929 1007" 90+ 80 70r 60F 50 40 20 159 Top Cobbles Be Gravel Sand Silt 64-128 mm 2-64 mm 0.062-2 mm <0.062 mm Bottom 158} 157- 156- 155 300 Figure 29.--Cross-channel particle-size distribution of bed material, Tanana River above L 1 L 1 1 250 200 150 100 50 STATIONING FROM RIGHT BANK REFERENCE, IN METERS Chena River Floodway, south channel, August 4, 1981. 41 PERCENTAGE, BY WEIGHT ey i) — 0 Ut Gravel Sand Silt 2-64 mm 0.062-2 mm <0.062 mm T Cobbles op 64-128 mm 159 f— T x r I x x x x 158 4 156 4 155+ 4 ELEVATION, IN METERS, NGVD OF 1929 154 i 1 4 \ 1 1 1 \ 50 100 150 200 250 300 350 400 450 STATIONING FROM LEFT BANK REFERENCE, IN METERS °o Figure 30.--Cross-channel particle-size distribution of bed material, Tanana River above Chena River Floodway, north channel, August 4, 1981. 42 1000 ray 711+ Suspended sediment Vv 1981 Gg = 1.444 x 1074 92-952 r2 = 0.976 4 > < a 8 i 100 E n Z 6 & Q 4 & 4 a 2 Bedload 4 3 1981 n 2 Gg = 0.6776 Q1-050 a r2=0.421 YP g 10 1980 = Gp = 1.052 x 10°2 Ql-643 3 i r2 = 0.894 a — & < 4 ee & fe Cn | 3 ce / nD a << om m Z 1 a a a EXPLANATION @ 1980 1981 Oo V Suspended w O Bedloaad @ / , | 0.1 pot tari 1 i_t 0.1 1 10 DISCHARGE, IN THOUSANDS OF CUBIC METERS PER SECOND Figure 31.--Sediment-transport rate as a function of discharge, Tanana River at Byers Island near Fairbanks, 1980-1981. 43 SEDIMENT-TRANSPORT RATE, IN THOUSANDS OF METRIC TONS PER DAY 1000 a Suspended sediment L 1981 Gg = 1.577 x 10°4Q2-958 L r2=0.981 4 z 1980 Gg = 1.134 x 10°3Q2-689 7 L 12 =0.968 o 100 on E Bedload | 1981 = F Gg = 4.817 x 10492183 7 L r2 = 0.644 4 1980 r Gg = 2.008 x 10°2Q1-642 “] L r2 = 0.745 4 i | i. a r / 4 L / 4 *E q C 4 r EXPLANATION “| O° 4 L 1980 1981 | V_ Suspended W edloa [ O Bedload @ Ss 7 7d a ot / / 0.1 fA) siiiil poo O21 1 10 DISCHARGE, IN THOUSANDS OF CUBIC METERS PER SECOND Figure 32.--Sediment-transport rate as a function of discharge, Tanana River at Fairbanks, 1980-1981. 44 SEDIMENT-TRANSPORT RATE, IN THOUSANDS OF METRIC TONS PER DAY 1000 Suspended sediment 1981 Gg = 5.761 x 10°2Q2-103 x2 = 0.929 “E 3 Bedload 1 1981 Lo Gp = 2.491 x 10°3Q1.985 4 r2 = 0.816 L 1980 4 Gg = 2.191 x 10°4Q2-246 r2 = 0.879 10 = - 4 b 4 1 EXPLANATION e / 1980 1981 q V Suspended W 4 L O Bedload @ 4 oak 0.1 I 10 DISCHARGE, IN THOUSANDS OF CUBIC METERS PER SECONLT Figure 33.--Sediment-transport rate as a function of discharge, Tanana River at lower end Goose Island, 1980-1981 45 SEDIMENT-TRANSPORT RATE, IN THOUSANDS OF METRIC TONS PER DAY Suspended sediment 1981 Gg = 4.524 x 10°4Q2-791 [ r2 = 0.987 we —T TT TITIty{ T Bedload 1981 » Gp = 5.630 x 10°3Q1-926 r2 = 0.710 _ i. 1980 F Gp = 6.815 x 10°6Q2-666 4 r2 = 0.844 10 fee L zi x =| Dr 4 ° EXPLANATION / 1980 1981 / V Suspended W O Bedload @ riiiil t 0.1 if 0.1 1 10 DISCHARGE, IN THOUSANDS OF CUBIC METERS PER SECOND Figure 34.--Sediment-transport rate as a function of discharge, Tanana River at upper end Goose Island, 1980-1981. 46 SEDIMENT-TRANSPORT RATE, IN THOUSANDS OF METRIC TONS PER DAY 1000 Suspended sediment 1981 Gg = 2.180 x 10°4Q?-889 r2 = 0.988 1980 Gg = 1.114 x 10°4Q 3-003 4 r2 = 0.924 100 = Bedload 7 1981 | Gg = 1.964 x 10°2Q1-669 | 2. r2 = 0.725 = 1980 4 - Gg = 2.295 x 10°3Q1-894 | r2 = 0,500 10 EXPLANATION ° 1980 1981 V Suspended W O Bedload @® _| _ r | cr 7“ / 0.11 1 f bit bo 01 1 10 DISCHARGE, IN THOUSANDS OF CUBIC METERS PER SECOND Figure 35.--Sediment-transport rate as a function of discharge, Tanana River near North Pole, 1980-1981. 47 SEDIMENT-TRANSPORT RATE, IN THOUSANDS OF METRIC TONS PER DAY 1000 T TT TTTItTyT Ty Suspended sediment 1981 Gg = 1.281 x 10°4Q2-963 r2 = 0.988 100 Bedload 1981 Gp = 2.313 Q0-9525 r2 = 0.307 4 1980 Gp = 9.424 x 10°Q2-425 4 r2 = 0,826 T EXPLANATION J e 1980 1981 V Suspended W O Bedload @ 0.1 1 vv iit fof oj jp print 0.1 1 10 DISCHARGE, IN THOUSANDS OF CUBIC METERS PER SECOND Figure 36.--Sediment-transport rate as a function of discharge, Tanana River above Chena River Floodway, 1980-1981. 48 67 PERCENT, BY WEIGHT, FINER THAN INDICATED SIZE 100 eT TT] b 4 80 _| 1981 60 ds = 0.31 mm / 4 PN | 1980 / dso = 0.39 mm 40 4 20 |. | 4 0 riiiiil roy tp iil en ee | i 2 5 1 2 5 10 20 50 100 SIEVE SIZE, IN MILLIMETERS Figure 37.--Particle-size distribution of bedload; comparison of 1980 and 1981 for Tanana River at Byers Island. og PERCENT, BY WEIGHT, FINER THAN INDICATED SIZE 100 T T TT TTqCyry TT TTTt. bk 4 go aa L 4 °F 981 / 7] d59 = 0.40 mm A 1980 YY d59 = 5.6 mm —_—_ 40 —_— 4 20 4 4 0 {J Lil t pt Lil 1 {| of Jf fj | tt) 1 2 5 1 2 5 10 20 50 100 SIEVE SIZE, IN MILLIMETERS Figure 38.--Particle-size distribution of bedload; comparison of 1980 and 1981 for Tanana River at Fairbanks. TS PERCENT, BY WEIGHT, FINER THAN INDICATED SIZE Lt} 100 SIEVE SIZE, IN MILLIMETERS Figure 39.--Particle-size distribution of bedload; comparison of 1980 and 1981 for Tanana River at lower end Goose Island. 6S PERCENT, BY WEIGHT, FINER THAN INDICATED SIZE 100 T T TTqtTtg TTT T T TTT] r “a 80 4 r 4 1981 60 : a! d59 = 0.47 mm L 4 1980 dso = 0.78 mm 40 4 4 20 4 pt Ea al th ee ta) 2 5 1 2 5 10 20 50 100 SIEVE SIZE, IN MILLIMETERS .--Particle-size distribution of bedload, comparison of 1980 and 1981 for Tanana River at upper end Goose Island. eg PERCENT, BY WEIGHT, FINER THAN INDICATED SIZE L | at 4 - | 6o- d59 wot mm 7] 1980 deg = 0.48 mm 40 LL 50 | 20-- | oL ! | { J ul I | oj } 14 al 1 | |_| J 4 Lu a 2 5 1 2 5 10 20 50 100 SIEVE SIZE, IN MILLIMETERS Figure 41.--Particle-size distribution of bedload; comparison of 1980 and 1981 for Tanana River near North Pole. vg 100 T eal T TT 80 1981 60/— dso = 0.56 mm 40}— PERCENT, BY WEIGHT, FINER THAN INDICATED SIZE 20 4 1 Poy ii Lil 1 Wh ed iil | 14 1a} ai 2 5 1 2 5 10 20 50 100 SIEVE SIZE, IN MILLIMETERS Figure 42.--Particle-size distribution of bedload; comparison of 1980 and 1981 for Tanana River above Chena River Floodway. Table 1.--Summary of discharge measurements made during period of sediment sampling, Tanana River at Fairbanks Gage Flow Surface Mean Mean height Discharge area width velocity depth Date (m) (m3/s) (m2) (m) (m/s) (m) 6-18-80 8.742 1,010 649 296 1.556 2.193 6-25-80 8.415 711 560 282 1.270 1.986 7-15-80 9.120 1,400 801 320 1.748 2.503 7-30-80 9.415 1,640 901 313 1.820 2.879 18-11-80 9.204 1,340 --- --- --- --- 19-03-80 8.577 714 --- --- --- --- 19-16-80 8.382 532 --- --- --- --- 10-07-80 8.361 586 385 169 1.522 2.278 10-23-80 7.705 345 215 107 1.605 2.009 5-22-81 8.409 558 355 177 1.572 2.006 6-18-81 8.754 864 490 284 1.763 1.725 6-30-81 8.967 1,070 595 284 1.798 2.095 7-13-81 9.485 1,760 939 406 1.874 2.313 7-29-81 9.449 1, 720 939 378 1. 832 2.484 8-13-81 9.373 1,530 921 357 1.661 2. 580 9-03-81 8.857 920 601 294 1.531 2.044 10-06-81 8.129 348 352 247 -9886 1.425 dns i Discharge measurement made at Tanana River at upper end Goose Island; gage height from gaging station. 55 9g Table 2.--Values of daily mean discharge, 1980 water year, Tanana River at Fairbanks [Winter flow period, November through April, estimated based on periodic discharge measurements, climatological records, and correlation with data obtained for Tanana River at Nenana. ] Mean daily discharge, in cubic meters per second, water year October 1979 to September 1980 Day Oct. Nov. Dec. dan. Feb. Mar. Apr. May June July Aug. Sept. 1 513 227 170 125 122 119 119 496 685 1190 1450 773 2 496 227 170 125 122 119 122 481 668 1370 1390 745 3 493 227 170 125 122 119 122 459 649 1340 1300 722 4 487 227 170 125 122 119 125 462 634 1250 1220 697 5 473 227 170 125 122 119 125 479 680 1210 1180 666 6 462 227 170 125 122 119 127 496 753 1190 1210 629 7 456 227 170 125 122 119 127 501 850 1180 1210 617 8 436 198 170 125 122 119 130 515 926 1190 1250 603 9 425 198 170 125 122 119 133 544 954 1190 1360 578 10 419 198 142 125 122 119 136 569 903 1230 1390 549 11 442 198 142 125 119 119 139 569 878 1260 1380 530 12 445 198 142 125 119 119 142 558 895 1280 1460 513 13 442 198 142 125 119 119 147 515 915 1350 1420 504 14 430 198 142 125 119 119 158 501 901 1410 1420 504 15 416 198 142 125 119 119 159 498 878 1380 1420 507 16 402 198 127 125 119 119 164 498 875 1360 1400 547 17 385 198 127 125 119 119 170 501 875 1380 1400 643 18 368 198 127 125 119 119 184 507 1010 1420 1400 722 19 340 198 127 125 119 119 193 513 1250 1410 1400 728 20 340 198 127 125 119 119 198 507 1160 1340 1280 756 21 312 198 127 122 119 119 210 501 997 1330 1200 835 22 312 198 127 122 119 119 221 498 903 1330 1140 872 23 312 170 127 122 119 119 232 501 838 1290 1070 869 24 283 170 127 122 119 119 249 507 765 1250 994 830 25 283 170 127 122 119 119 266 507 731 1260 932 782 26 283 170 127 122 119 119 283 513 728 1300 895 739 27 255 170 127 122 119 119 312 513 716 1330 884 705 28 255 170 127 122 119 119 340 527 773 1410 852 694 29 255 170 127 122 119 119 396 564 867 1650 838 683 30 255 170 127 122 --- 119 481 612 1000 1670 810 680 31 255 --- 127, 122 --- 119 --- 668 --- 1550 787 --- LG Table 3.--Values of daily mean discharge, 1981 water year, Tanana River at Fairbanks [Winter flow period, November through April, estimated based on periodic discharge measurements, climatological records, and correlation with data obtained for Tanana River at Nenana. ] Mean daily discharge, in cubic meters per second, water year October 1980 to September 1981 Da Oct. Nov. Dec. dan. Feb. Mar. Apr. May June July Aug. Sept. 1 685 269 184 153 150 156 164 238 875 940 1580 1040 2 688 255 184 153 150 156 164 255 827 835 1630 986 3 680 255 184 153 150 156 164 272 1310 784 1690 952 4 668 241 170 153 153 156 164 283 1190 770 1660 918 5 637 241 170 153 153 156 164 312 1020 810 1510 906 6 612 227 170 153 153 156 167 340 986 844 1410 886 7 586 227 170 153 153 156 167 382 991 1020 1360 861 8 581 227 170 153 153 156 167 430 937 1140 1450 833 9 569 227 170 153 153 156 167 487 898 1190 1580 799 10 547 212 170 153 153 156 167 547 903 1340 1740 765 11 518 212 170 153 153 159 167 632 861 1350 1720 728 12 510 212 170 153 153 159 167 649 816 1510 1630 708 13 481 212 170 153 153 159 170 595 787 1720 1610 685 14 481 212 170 153 153 159 170 558 767 1650 1650 651 15 453 212 170 153 153 159 170 530 767 1500 1620 617 16 425 198 156 153 153 159 176 510 765 1480 1550 583 17 425 198 156 153 153 159 176 507 782 1570 1450 572 18 396 198 156 153 153 159 176 515 818 1670 1310 552 19 396 198 156 153 153 161 176 566 841 1750 1180 535 20 368 198 156 153 153 161 176 598 844 1760 1100 521 21 368 198 156 150 156 161 181 566 850 1700 1100 524 22 368 198 153 150 156 161 181 538 841 1690 1070 507 23 348 198 153 150 156 161 187 527 855 1700 1030 493 24 340 198 153 150 156 161 187 487 909 1770 997 487 25 340 198 153 150 156 161 193 445 901 1720 969 487 26 312 198 153 150 156 161 198 481 895 1740 943 481 27 312 184 153 150 156 161 204 688 932 1780 969 467 28 312 184 153 150 156 161 210 677 929 1840 1020 450 29 283 184 153 150 --- 161 221 651 1070 1710 1070 433 30 283 184 153 150 --- 161 227 799 1060 1650 1110 425 31 269 --- 153 150 --- 161 --- 827 --- 1560 1100 --- 8g Table 4.--Water surface elevations along a reach of the Tanana River near Fairbanks [Elevation, in meters above National Geodetic Vertical Datum of 1929] Gage sites Date _ GS-1 T-1 T-2 T-3 T-4 T-5 T-6 T-7 T-8 T-9 T-10 Water Distance in kilometers from T-10 discharge 41.3 36.9 32.1 29.6 25.7 21.9 17.8 12.7 7.6 2.9 0 (m3/s) 7-10-80 126.73 --- 130.91 132.31 135.01 137.90 141.83 146.48 152.11 157.40 160.84 1,230 7-22-80 126.92 128.50 131.08 132.52 135.19 138.07 141.95 146.34 152.24 157.58 161.07 1,330 8-05-80 126.70 128.22 131.01 132.29 135.01 137.89 141.77 146.07 152.10 157.47 160.84 1,180 9-29-80 126.11 127.61 130.43 131.70 134.51 137.57 141.30 145.44 151.67 157.12 160.56 683 6-04-81 126.65 128.45 131.00 132.24 135.29 137.93 141.79 146.08 151.83 157.43 160.75 1,190 6-24-81 126.33 128.21 130.78 131.98 135.08 137.80 141.65 145.89 151.81 157.30 160.67 909 7-22-81 127.19 129.02 131.37 132.76 135.79 138.20 142.04 146.53 152.20 157.74 --- 1,690 9-07-81 126.25 128.14 130.71 131.63 134.99 137.60 141.29 145.50 151.44 157.17 --- 861 lwater discharge is from gaging station Tanana River at Fairbanks (site T-2) Table 5.--Particle-size distribution of bed material, south channel, Tanana River at Byers Island, July 16, 1980 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from right bank reference, in meters size (mm) 15 30 45 60 75 90 128 a 128 weeee|||| || sen |||| atte) |||) Jaa) |)))) atte! ||) SUL 64 sm |||) cece!) |||] femme!) |) |)|| meee |||) || ceee||||| 7] Od 32 wen |) ame || 1100) || 400) ||) =--))) ee 16 ee) 98 96 === ane 8 ae Ieee 89 Se eee rill eo 4 1000 =-- 79 69) )/|//-a— |||) /iUL 2 99 --= 71 II eee IIL | cere 1 98 100 60 wel een | een 5 95 99 47 86 | Here! (deere 125 91 99 36 30 100 100 £125 88 97 29 26 21 96 .062 83 90 15 21 5 78 59 Table 6.--Particle-size distribution of bedload material, middle channel, Tanana River at Byers Island, July 16, 1980 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from left bank reference, in meters size (mm) 15 30 45 60 75 90 105 120 128 --- --- --- --- --- --- --- --- 64 --- --- --- --- --- --- --- --- 32 --- --- --- --- --- --- --- --- 16 --- --- --- --- --- --- --- --- 8 on --- --- --- --- a --- --- 4 paca sais payee --- --- --- a --- 2 100 --- --- --- --- --- --- --- 1 99 100 --- 100 100 100 --- --- 25 98 99 100 99 99 99 100 100 +25 97 98 99 95 98 95 97 68 -125 94 88 87 81 96 89 75 28 062 74 56 42 41 90 79 44 10 Particle Stationing, from left bank reference, in meters size (mm) 135 150 165 180 195 210 225 128 --- --- --- --- --- --- --- 64 --- --- --- --- --- --- --- 32 --- --- --- --- --- --- --- 16 --- --- --- --- --- --- --- 8 ue ui ooo ae =u. a a 4 --- a --- — --- --- eee 2 eu uo va fee a nee Coe 1 --- --- --- --- --- --- 100 25 100 --- --- 100 --- 100 99 225 94 100 100 99 100 48 31 125 87 98 91 85 60 21 17 062 77 75 25 40 1l 4 3 60 Table 7.--Particle-size distribution of bed material, north channel, Tanana at Byers Island, July 16, 1980 [Percentage, by weight, finer than particle size indicated] River Particle Stationing, from left bank reference, in meters size (mm) 15 30 45 60 75 90 105 120 135 128 --- --- --- --- --- --- --- --- --- 64 --- --- --- --- --- --- --- --- --- 32 --- --- --- --- --- --- --- 100 --- 16 EOE Tee 96 = «-- 8 --- a SARE DPSS OE Rae i ci 95 wae 4 i cid cr a ne Lid a 95 --- 2 JJ. qoe-| |) ede | pt ee | | | og | {|i 1 100 og | oe Ce oe [iit 5 99 99 99 100 100 100 100 95 100 .25 98 98 98 99 87 65 89 17 26 .125 95 92 94 77 18 7 12 3 3 .062 86 64 80 39 5 : 1 <3 Particle Stationing, from left bank reference, in meters size (mm) 150 165 180 195 210 225 240 255 270 128 --- --- --- --- --- --- --- --- --- 64 --- 100 100 100 100 --- --- --- --- 32 100 79 66 40 27 --- --- --- --- 16 99 51 21 13 4 --- --- --- --- 8 99 15 4 5 1 --- --- --- --- 4 99 3 -6 2 6 --- --- --- 100 2 99 1 4 9 25 wee --- --- 99 1 99 6 3 6 4A oH --- --- 99 5 99 5 .3 Fe] -4 100 100 100 95 .25 24 4 .2 3 3 99 57 62 13 .125 3 al 1 «1 - 25 8 6 2 .062 5 0 0 1 ve 4 8 5 Table 8.--Particle-size distribution of bed material, south channel, Tanana River at Byers Island, July 30, 1981 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from right bank reference, in meters size (mm) 45 60 75 90 128 --- --- = = 64 =a 100 --- --- 32 100 76 100 --- 16 50 16 99 --- 8 24 2 98 --- 4 13 4 95 a 2 10 3 93 --- 1 9 3 91 --- 5 9 0 87 100 125 8 0 24 91 £125 1 0 3 54 .062 l 0 1 3 62 Table 9.--Particle-size distribution of bed material, middle channel, Tanana River at Byers Island, July 30, 1981 [Percentage, by weight, finer than particle size indicated] Particle _Stationing, from left bank reference, in meters size (mm) 60 75 90 105 120 135 150 128 --- --- --- --- --- --- --- 64 100 --- 100 --- --- --- --- 32 84 100 85 100 --- --- --- 16 61 78 76 91 --- --- --- 8 35 60 62 71 --- --- --- 4 21 55 50 66 --- --- --- 2 16 54 47 64 --- --- --- 1 16 54 47 64 --- --- --- 5 15 53 47 64 100 100 100 .25 10 34 31 53 89 93 94 -125 1 2 2 4 13 16 11 -062 ao pa se -2 1 1 1 Particle Stationing, from left bank reference, in meters size mm 165 128 --- 64 --- 32 --- 16 --- 8 Ou 4 i. 2 _- 1 woe “2 100 .25 85 -125 6 .062 4 180 195 63 210 290 305 Table 10.--Particle-size distribution of bed material, north channel, Tanana River at Byers Island, July 30, 1981 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from right bank reference, in meters size _(mm) 45 60 75 90 105 120 135 128 --- --- co- --- --- -e- --- 64 --- --- --- 100 100 --- 100 32 100 --- -o- 25 42 100 94 16 99 --- --- 10 3 70 48 8 95 --- --- : 1 27 9 4 91 --- --- 0 2 8 1 2 89 --- =< 0 1 4 1 Z 88 --- --- 0 1 4 : 5 83 100 --- 0 0 4 0 225 27 98 100 0 0 2 0 -125 4 43 72 0 0 4 0 .062 2 1 3 0 ) 0 0 Particle Stationing, from right bank reference, in meters size (mm) 150 165 180 195 210 225 240 128 --- --- --- --- --- --- --- 64 100 100 --- --- --- --- --- 32 88 96 100 --- --- --- --- 16 50 69 99 --- --- --- --- 8 12 27 93 --- --- --- --- 4 2 8 89 --- --- --- --- 2 1 2 88 --- --- --- --- 1 4 1 87 --- --- --- --- 5 0 1 87 100 100 100 100 25 0 1 53 88 95 92 98 2120 0 : 2 8 14 12 33 062 0 0 l 7 3 4 2 64 Table 11.--Particle-size distribution of bed material, Tanana River at Fairbanks, [Percentage, by weight, finer than particle size indicated] July 17, 1980 Particle Stationing, from right bank reference, in meters size (mn) 15 30 45 60 75 90 105 120 135 150 165 180 195 128 wee ee re ee ee ree wee wee eee 1000 --- > 64 wer eee eee eee wee 100 eee eee nee ee 85 100 100 32 wm- ee wee ee- 100 86 --- wn eee eee 64 43 86 16 err eee eee nee 66 60 100 --- --- --- 29 20 48 8 were eee 43 39 99 wn wee wee 17 8 18 4 were eee 25 23 98 n-ne wee nee 9 5 7 2 were eee 20 17 98 -w- wee wee 5 4 5 1 wore eee 18 15 98 --- --- 0 -e- 4 4 4 25 e-- eee = 1000s == 18 15 98 100 100 100 3 4 3 -25 100 100 95 --- 12 10 83 93 87 97 1 2 1 -125 99 99 48 100 1 2 13 40 18 79 : : . .062 80 81 16 78 3 4 2 11 2 58 0 0 0 Particle Stationing, from right bank reference, in meters size (mm) 210-225) 240) 255) 270285300315 330345360 = 375 390 128 eee tee tee eee 100 nee ree eee re eee eee 64 100 100 100 100 80 100) --- --- 0 wn- eee eee eee eee 32 76 99 64 74 51 64 100 100 100 100 100 100 # 100 16 44 82 46 63 20 21 50 65 64 84 59 43 87 8 17 56 21 45 11 5 6 13 9 21 12 12 40 4 5 46 8 35 7 2 1 5 2 8 5 6 16 2 2 44 5 32 6 1 1 5 2 8 - 5 12 1 2 43 5 32 6 1 1 5 2 7 4 5 10 75 2 40 5 31 6 1 1 4 2 7 4 5 10 25 1 11 3 18 + 1 1 3 1 6 3 4 6 125 . 1 2 1 1 3 3 1 : 3 1 1 1 062 0 : 0 2 1 1 . 0 1 : : : 65 Table 12.--Particle-size distribution of bed material, Tanana River at Fairbanks, August 5, 1981 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from right bank reference, in meters size (mm) 0 15 30 90 105 120 135 150 165 180 195 210 225 128 ee eee eee ee eee 64 100 100 --- --- 0 wee wee wee 100 ee eee ee eee 32 92 95 100 --- --- 100 100 89 100 --- --- --- 0 --- 16 87 31 88 --- --- 84 60 45 62 100 --- --- --- 8 87 5 88 --- --- 59 20 26 51 99 --- eee wee 4 87 2 88 --- 0 --- 39 7 22 49 99 wee ee nee 2 87 1 88 --- --- 30 4 21 49 98 --- --- --- 1 87 1 87 ww- ee 26 4 21 49 98 --- --- 0 --- 75 87 1 87 100 100 20 3 21 49 98 100 100 100 .25 86 1 75 99 93 10 1 15 36 77 97 97 96 -125 56 -4 24 89 16 1 = 1 2 4 14 17 12 .062 2 0 1 34 Z 0 ol sk ok 2 3 7 Particle Stationing, from right bank reference, in meters size (mm) 240 255 270 285 300 315 330 345 360 375 390 405 128 eee eee eee ee eee nee 64 100 100 100 100 100 --- --- 100 100 --- 100 --- 32 34 91 56 92 88 100 100 99 80 100 84 --- 16 7 30 14 50 61 72 85 79 31 34 29. = —--- 8 3 7 3 20 28 24 39 33 10 16 14 --- 4 2 3 1 10 9 6 9 15 4 11 ll s--- 2 1 2 1 7 4 2 4 11 3 11 ll --- 1 1 2 1 6 3 2 3 10 3 10 10 --- 5 1 2 1 6 3 1 2 9 3 10 10 ~=100 .25 1 1 1 2 1 1 1 5 1 o 6 81 -125 ee a2 .2 .2 ne el a1 .3 a 4 4 4 .062 0 0 0 0 0 0 0 0 0 0 0 2 66 Table 13.--Particle-size distribution of bed material, Tanana River at lower end Goose Island, July 18, 1980 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from left bank reference, in meters size (mm) 15 30 45 60 75 90 128 --- --- --- --- --- --- 64 100 100 100 100 100 100 32 62 64 91 85 92 99 16 52 37 57 46 65 75 8 52 18 28 20 24 44 4 52 8 14 9 6 24 2 52 4 7 4 1 16 1 52 3 4 3 1 14 5 52 2 3 2 1 12 4) 43 4 1 4 3 4 .125 5 2 1 2 2 1 -062 4 1 2 1 1 1 Particle Stationing, from left bank reference, in meters size mm 105 120 135 150 165 180 128 --- --- --- --- --- --- 64 100 --- --- --- 100 100 32 78 --- --- --- 87 98 16 63 --- --- --- 77 75 8 53 --- --- --- 67 33 4 52 --- --- --- 63 11 2 51 --- --- --- 62 4 1 51 --- --- --- 61 3 a) 50 100 100 100 59 2 .25 36 87 87 86 27 1 -125 1 2 5 5 1 3 .062 2 1 1 4 1 1 67 Table 14.--Particle-size distribution of bed material, Tanana River at lower end Goose Island, August 3, 1981 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from left bank reference, in meters size (mm) 12 24 36 48 60 72 84 96 128 --- --- --- 100 --- --- --- --- 64 --- 100 100 80 100 100 100 100 32 --- 15 78 78 66 87 94 88 16 --- 2 47 33 29 52 62 64 8 --- 1 18 8 8 19 23 35 4 --- 3 5 1 2 4 7 17 2 --- 3 1 A 13 3 2 10 1 --- +3 3 0 el «1 1 8 a 100 0 0 0 0 0 2 6 .25 77 0 0 0 0 0 al 1 .125 9 0 0 0 0 0 0 7 - 062 4 0 0 0 0 0 0 0 Particle Stationing, from left bank reference, in meters size (mm) 108 120 132 144 156 168 180 128 --- --- --- --- --- --- --- 64 --- --- 100 --- 100 100 --- 32 --- --- 72 100 88 91 --- 16 --- --- 49 92 62 51 --- 8 --- --- 38 84 32 23 --- 4 --- --- 35 81 20 8 --- 2 --- --- 34 81 17 3 --- 1 --- --- 34 81 16 2 --- 5 100 100 34 81 15 2 100 .25 86 89 29 68 5 1 88 .125 4 5 2 3 4 2 39 .062 ill 1 2 l 0 0 2 68 Table 15.--Particle-size distribution of bed material, Tanana River at upper end Goose Island, July 18, 1980 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from left bank reference, in meters size mm 17 34 51 68 85 102, = 119-136-153 128 wee ee ee eee eee eee tee cee 64 w-- wee wee === -'100 100 »=6 100 »3=6100 = 100 32 --- --- 100 100 96 91 98 84 91 16 100 --- 99 86 64 56 55 38 46 8 99 --- 98 36 21 22 22 10 12 4 99 --- 98 17 5 8 4 2 2 2 98 --- 97 15 1 3 1 1 4 1 98 --- 96 15 1 2 <O) Te 3 25 98 100 90 15 1 2 0 1 0 25 62 93 39 9 3 2 0 1 0 125 “ 7 3 2 «a1 0 +2 0 062 1 1 2 4 wl 3 0 10 Particle Stationing, from left bank reference, in meters size mm 170 187 204 221 238 j(.255 272 289 306 128 eer eee eee eee 100 100 ee wee wee 64 100 100 100 100 46 92 100 --- --- 32 87 50 56 36 20 85 91 --- oe 16 59 28 46 9 7 65 58 wwe wee 8 27 22 41 5 2 49 36 --- 0 wee 4 10 20 40 4 1 42 26 wee wee 2 4 20 40 4 1 39 220 ee one 1 3 20 40 4 1 39 220 22-0 ae 5 2 19 40 4 1 38 21 100 100 25 1 13 36 3 -4 26 18 99 98 -125 2 61 3 1 2 1 3 65 82 062 0 1 31 1 oo lit 3 16 69 Table 16.--Particle-size distribution of bed material, Tanana River at upper end Goose Island, August 3, 1981 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from left bank reference, in meters size (mm) 15 30 45 60 75-90 ~=105 = 120,135 —«150 128 wee ee eee ree re ree 64 100 100 100 100 --- 100 100 100 100 # 4100 32 36 84 70 71 ~—-:100 95 87 21 92 84 16 10 60 33 23 79 68 50 9 61 38 8 & 22 10 6 38 33 20 4 24 10 4 3 5 2 1 13 13 8 1 4 2 é 3 2 1 2 7 5 2 3 eS tak 1 3 2 1 -l 6 3 1 wl ol} | 2 5 3 1 4 #0 5 2 1 0 0 0 25 1 4 2 0 2 1 2 0 0 0 125 1 1 0 0 1 3 -1 0 0 1 062 0 0 0 0 wl 1 0 0 0 0 Particle Stationing, from left bank reference, in meters size (mm) 165 180 195 210 225 240 255 270 285 300 128 wee eer eee 64 100 «6100 100 100 100 --- --- 100 ---) --- 32 84 82 91 40 430 --- eee 66 --- --- 16 47 46 43 10 18 100) --- 19 wee wee 8 16 21 15 2 5 95 --- 30 eee mee 4 ~ 6 3 1 2 91 --- Looee2 nee 2 1 1 1 1 1 89 --- Lo ee nee 1 1 1 1 4 01 89 --- Looeee one 5 3 #1 4 #0 1 89 100 1 100 --- 25 <2| 3 0 1 78 89 -4 74 100 -125 l 1 1 0 2 13 7 -1 22 98 -062 0 0 0 0 0 4 -4 0 1 53 70 Table 17.--Particle-size distribution of bed material, south channel, Tanana River near North Pole, July 23, 1980 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from right bank reference, in meters size (mm) 15 30 45 60 75 90 105 120 135 150 128 ere eee wee ee 100 100 --- =6100 --- == 64 --- 100 100 100 79 58 100 62 100 100 32 --- 69 94 28 59 17 20 5 63 96 16 --- 36 52 12 31 7 3 5 63 90 8 --- 21 26 7 8 6 3 5 50 84 4 --- 14 14 4 1 6 3 5 47 83 2 --- 10 10 2 -l 6 3 5 43 82 1 --- 9 8 1 0 6 3 5 43 82 5 100 8 5 1 0 6 3 5 42 82 25 95 4 3 4 #0 5 2 4 40 78 125 24 1 1 -l1 0 «4 4 061 9 19 062 8 1 2. 0 0 1 1 1 4001 71 Table 18.--Particle-size distribution of bed material, north channel, Tanana River near North Pole, July 23, 1980 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from right bank reference, in meters size (mm) 15 30 45 60 75 90 105 120 135 #150 165 180 195 128 w-- --- 100 100 nn ree ree ree ee ee ene 64 100 ——--- 68 88 100 100 100 100 100 --- --- --- --- 32 970 =e 30 35 30 19 16 48 88 wn wee ee eee 16 66 --- 11 14 10 11 9 31 BL wee nee eee wee 8 44. --- 4 2 4 6 4 20 190 wee wee nee wee 4 3400 =e 1 pote 4 2 10 4 wee ee ee wee 2 320 --- 1 iid 2 1 7 2 eee eee eee 1 31 --- 1 0 1 2 1 6 2 wee wee eee wee <5 30 100 1 0 1 1 1 6 2 100 100 --- 100 25 25 98 2 0 1 3 oot 1 92 99 100 96 .125 17 96 -l 0 1 0 1 3 -2 16 59 87 41 062. 11 82 0 0 0 0 0 1 0 1 2 27 2 Particle Stationing, from right bank reference, in meters size (mm) 210 225 240,255 270 285300315 330.345 360 375 128 wee eee ee eee ee eee 100 rr rere rae 64 --- --- 100 100 100 100 770 wee eee wee eee :100 32 eer ee 75 66 85 97 38 wn ree ee eee 91 16 err oe 33 16 23 40 200 eee nee eee wee 57 8 wor oe 4 6 6 6 130 -n- wee wee nee 25 4 err oes 3 3 5 5 8B wee eee eee nee 16 2 ero eee 3 3 5 5 Too wee eee eee nee 15 1 ere aan 3 3 5 5 To wee wee eee wee 15 5 err ose 3 3 5 5 7 --- --- 100 100 15 -25 100 100 3 3 4 4 6 100 100 95 99 1l .125 97 99 1 1 2 3 2 98 98 57 91 2 -062 38 59 -4 3 1 1 4 75 75 7 30 1 72 Table 18.--Continued [Percentage, by weight, finer than particle size indicated] Particle Stationing, from right bank reference, in meters size (mm) 390 405 420 435 450 465 480 495 510 525 540 555 570 128 wee ee ee eee wee 100 eee ee eee ree wee 64 100 100 100 100 100 76 100 --- --- 0 wee wee wee ee 32 79 92 86 93 91 38 66 --- --- --- 100 ---) --- 16 ad 54 48 50 55 11 37) wee nee eee 91 --- --- 8 15 22 22 15 22 3 200 --- wee ee 85 --- wee 4 5 8 10 3 5 1 ll --- --- 0 --- 83 --- --- 2 3 4 6 3 3 1 8 --- 100 100 83 --- --- 1 2 4 4 3 3 1 8 --- 99 99 83 --- --- 5 2 3 3 3 3 1 7 --- 99 97 83 --- 100 +25 1 1 1 2 2 1 5 100 99 97 80 100 98 +125 1 1 2 +2 .2 2 -4 85 89 93 69 94 43 062 0 0 1 0 0 0 0 9 32 56 37 44 3 Particle Stationing, from right bank reference, in meters size (mm) 585 600 615 630 645 660 675 690 705 720 735 750 128 a ee ee ee 64 100 100) w= wee nee eee 100 32 90 87 wee mee ee 100 eee ee 100-1 16 84 BQ meee Lee 9B wee 9 8 84 30 nee BB wee wee = 100 2 4 8318 aeRO eee 1 2 8315 wee eee BT eee wee 93 8B 4 1 83150 === == 100 87 ee wee esi 13 5 8 15 100 100 53 83 --- 100 --- 91 98 0 125 55 13 98 99 18 36 100 93 100 34 ~« 64 0 11253 3 61 70 3°12 #73 31 97 «211 3 0 .062 21 417 1 5 16 11 84 3 40 73 Table 19.--Particle-size distribution of bed material, south channel, Tanana River near North Pole, August 4, 1981 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from right bank reference, in meters size (mm) 15 30 45 60 75 90 105 120 135 150 128 east tH eee eH ar ee eer mete 64 --- 100 100 100 100 --- 100 100 --- --- 32 100 63 90 78 94 100 78 65 --- --- 16 93 14 448 35 55 20 59 65 --- 100 8 91 3. «15 8 17 3 54 65 --- 97 4 90 1 3 1 4 1 53 65 100 97 2 90 1 1 (Saad 1 53 65 99 97 1 89 1 Al) He eS ITH bas Hemi] 199 ||I/ Loz 5 87 1 4°40 4 1 53 65 94 97 5-76 1 3-0 3 1 44 52 53 95 125 9 3.1 (0 stat 3 4 6 36 .062 30 0 0 0 Me 2, 74 Table 20.--Particle-size distribution of bed material, north channel, Tanana River near North Pole, August 4, 1981 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from right bank reference, in meters size (mm) 30 45 60 75 90 105 120 135 150 165 245 260 128 we-- wee 100 === 100. 100 e- aneereeeeewee 64 100 =100 48 --- 72 360 wee ee ee ee nee wee 32 74 75 48 --- 26 6 wee ee ee eee eee 16 60 2 48 --- 10 4oene wee wee wee =e 100 8 48 1 48 --- 4 Owe wee ee eee nee 94 4 46 2 48 --- 3 Own wee wre eee nee 84 2 46 -2 48 --- 3 Own wee eee eee wee 80 1 46 2 48 --- 3 OQ wn- wee ee eee wee 79 5 46 0 48 100 3 0 100 100 --- 100 100 77 25 44 0 43 61 2 0 82 99 100 94 91 61 125 8 0 2 8 2 0 5 39 92 23 26 11 062 3 0 1 2 0 0 2 1 25 1 1 1 Particle Stationing, from right bank reference, in meters size (mm) 300-315-330. 345360 375390 = 405,420. 435 450 465 128 ere eee eee eee 100 100s --- =100 ~--- --- --- 100 64 --- 100 100 100 39 68 100 64 100 100 100 61 32 100 67 50 49 27 55 89 32 50 54 78 35 16 55 30 15 14 10 29 67 7 18 33 41 14 8 13 14 5 3 4 10 26 2 5 12 14 5 4 5 8 3 1 1 3 8 1 1 4 + 2 2 5 5 3 1 1 1 4 1 1 2 2 1 1 4 5 3 1 1 1 2 5 1 2 1 1 75 4 5 3 1 4 5 1 4°61 2 1 1 .25 3 3 2 1 2 3 61 2 5 1 1 3 125 1 3 2 -1 0 1 -1 0 1 1 -1 0 062 0 0 0 0 0 0 0 0 0 0 0 0 15 Table 20.--Continued [Percentage, by weight, finer than particle size indicated] Particle Stationing, from right bank reference, in meters size (mm) 480 495 580 595 610 625 760 775 128 1000 --- wee ee ree nee ener 64 38 --- --- 100 100 100 100 # 100 32 280 n= wee 27 44 31 89 29 16 ll --- --- 5 14 3 38 9 8 6 w= -e- -4 2 1 7 2 4 4 wwe wee -lo1 1 2 1 2 2 wee nee -loit 1 1 2 1 20 wee wee -l oil 1 1 el ee) 2 100 100 0 4°61 1 0 +25 1 95 93 0 4 01 -3 0 125 .2 38 31 0 1 -l 0 0 062 0 2 1 0 0 0 0 0 76 Table 21.--Particle-size distribution of bed material, south channel, Tanana River above Chena River Floodway, August 5, 1980 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from right bank reference, in meters size (mm) 18 33 48 63 78 93 108 125 140 128 wot eee ee ee eee ee nee 64 ware ee eee nee eee nee 32 were ee eee ee nee wee 16 wat ee ee ee eee nee wee 8 sommes | | cst | | lean | fd || | ered | ff mee | | re) | | ce || | 4 mol | || me | |e | | ee er | rey) ieee || lee || | ee 2 dome || || ems | | fetaceel) | i fopeeew || eee | | cet | P| eo 1 wr- eee wee 100 ee- we- ee === 100 5 100 100 --- 99 --- --- 100 100 99 +25 73 96 100 91 100 100 98 99 79 «125 5 16 98 57 99 97 79 86 5 062 we) ek 56 13 67 57 36 30 1 Particle Stationing, from right bank reference, in meters size (mm) 155 0170 =185 ~=—200_ = 215230245 260 128 e-- see eee ee= 100) 100 »3=6100 = 100 64 --- --- 100 100 40 76 30 28 32 worse 97 97 8 47 11 8 16 100 --- 73 95 4 17 4 6 8 99 --- 46 94 3 5 2 5 4 98 --- 30 94 3 2 1 5 2 98 --- 24 94 2 1 1 4 1 98 --- 21 94 2 1 1 4 5 98 --- 20 80 1 -3 #1 4 .25 61 100 16 13 2 1 1 4 -125 3 93 9 1 2 0 0 0 .062 .2 27 3 ) 0 0 0 0 77 Table 22.--Particle-size distribution of bed material, north channel, Tanana River above Chena River Floodway, August 5, 1980 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from left bank reference, in meters size (mm) 60 75 90 105 120 135 150 165 180 210 225 240 128 ere wee 100 eee eee eee 100 ee ree eee ree nee 64 o-- eee 75 100 100 100 74 #100 --- --- --- 100 32 100 =100 54 76 86 45 51 56 --- 100 100 93 16 96 81 25 52 63 10 26 47 --- 99 96 71 8 91 55 8 21 28 4 10 430 --- 99 96 48 4 88 38 3 6 13 3 3 42, --- 99 96 45 2 87 35 2 3 10 3 2 42. --- 99 96 44 1 87 33 2 2 8 3 2 42 --- 99 96 44 25 87 32 1 2 7 3 2 42 100 99 96 44 25 81 25 1 1 4 2 1 36 89 72 96 44 125 26 3 1 1 4 3 vce 11 13 84 39 062 3 2. 0 0 0 0 0 4 3 -3 (19 20 Particle Stationing, from left bank reference, in meters size (mm) 255-270 = 285-300 315330345360 = 375 390 405 128 goof eee see eee 100 wee seo) ne=- 100 - 100-1100 64 sce ees see es 68 100 100. 100-78 = 71 60 32 100 --- 100 --- 27 74 93 60 38 4 30 16 Pee eee 8 4 #56 15 ll 1 22 8 53 mee Bee 5 31 27 1 1 23 00«5 4 ee 4 28 16 3 ee eg 2 Al eee 19 ee Ap? 3 i ee 1 40 --- 18 == eos sO ae 5 39 --- 18 100 4 2 10 0 0 0 1 125 34 100 13 98 Oa ee oe) 0 0 4 125 17 90 4 54 30041 4°20 0 0 i 062 6 24 1 1 0 a0 0 0 0 0 78 Table 23.--Particle-size distribution of bed material, south channel, Tanana River above Chena River Floodway, August 4, 1981 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from left bank reference, in meters size mm 30 45 135 150 165 195 210 225 240 255 128 ns 0) 64 --- ee 53 --- 100 100 100 100 100~=«--- 32 w-- eee 18 100 88 52 77 72 67 --- 16 --- 100 4 0 87 16 57 40 34.0 --- 8 --- 94 1 0 87 3 22 12 1300 --- 4 --- 91 1 0 86 1 7 3 30 --- 2 --- 89 1 0 86 3 3 1 1 --- 1 --- 86. 1 0 86 3 2 | 4 --- 5 --- 68 1 0 86 0 2 0 0 100 .25 100 13 . 0 84 0 1 0 0 90 -125 62 3 0 0 31 0 . 0 0 13 .062 2 7 0 0 0 0 0 0 0 1 79 Table 24.--Particle-size distribution of bed material, north channel, Tanana River above Chena River Floodway, August 4, 1981 [Percentage, by weight, finer than particle size indicated] Particle Stationing, from left bank reference, in meters size (mn) 60 75 90 105 120 135 #4150 165 180 195 210 128 woe eee tee cee 100 eee eee ee ree ee 64 100 100 100 100 73, 100 100 100 100 --- --- 32 84 93 66 38 37 60 71 64 90 --- --- 16 75 57 25 10 10 18 32 35 82 100 --- 8 73 17 7 5 3 6 8 13 76 99 --- 4 73 3 2 2 1 3 1 8 75 99 --- 2 73 1 1 1 w2 |\\2 1 7 75 99 --- 1 73 1 1 5 -l 2 1 7 75 99 --- 5 73 1 1 3 0 1 1 7 75 99 100 25 65 1 3 2 0 1 1 5 58 84 99 125 8 -l 0 0 0 3 2 1 8 10 11 062 1 0 0 0 0 0 0 0 4 4 2 Particle Stationing, from left bank reference, in meters size (mm) 275-290 = 305320, 335350 = 365 380 395 410 128 w--- 100 100 wee eee ee ee eee 64 100 66 49 100 100 100 100 100 100 --- 32 31 22 24 43 27 43 87 42 93 --- 16 7 5 9 22 9 15 48 11 53 100 8 4 2 2 7 2 4 15 3 10 96 4 3 1 1 2 4 61 3 1 1 96 2 3 1 2 2 22) |||h 1 2 -2 96 1 3 4 Ae ie | 5 al -1 96 5 3 0 0 1 0) 4 3 0 0 96 25 2 0 0 1 0 .2 -l 0 0 96 125 1 0 0 -1 0 0 0 0 0 94 062 0 0 0 0 0 0 0 0 0 77 80 18 Table 25.--Composite particle-size distribution and statistics of bed material, Tanana River, 1980 [Percentage, by weight, finer than indicated sieve size] 1980 Lower end Upper end Chena R. Particle Byers Island Fairbanks Goose Is. Goose Is. North Pole Floodw size “South iddTe North Single “Single “Single “South North South orth (mm) channel ___channel__ channel channel channel channel channel channel channel channel 128 --- --- --- 100 --- 100 100 100 100 100 64 --- --- 100 98.7 100 96.6 89.9 98.2 86.7 92.4 32 100 --- 89.6 89.1 88.0 82.5 55.1 83.6 80.5 73.3 16 99.1 --- 82.4 68.6 70.6 62.0 39.9 68.5 76.4 54.2 8 96.3 --- 78.8 47.9 53.3 44.6 31.0 59.3 73.8 41.6 4 92.6 100 77.8 41.2 44.9 37.7 27.7 56.1 72.5 37.1 2 89.7 99.9 77.5 39.9 41.8 35.9 26.1 55.4 72.0 36.1 1 86.4 99.9 77.4 39.5 41.0 35.7 25.7 55.3 71.8 35.7 5 82.0 99.4 77.1 39.2 40.3 35.1 25.2 54.1 70.7 35.3 25 78.1 88.2 51.8 34.9 31.1 27.8 23.1 48.7 60.4 31.0 -125 63.0 73.6 24.7 22.3 1.8 9.7 5.6 34.2 38.1 15.0 062 51.9 45.1 15.7 13.4 3 1.4 1.0 14.7 17.1 3.3 Particle-size statistics Percent- finer [Particle diameter (mm) at given percent-finer parameter] parameter dg --- --- --- -- 0.15 0.096 0.12 0.035 0.030 0.074 dig --- --- 0.064 0.078 .20 .17 20 .070 060 13 d35 --- --- 17 .25 34 50 11 -14 11 48 deo --- 0.070 24 8.6 6.1 9.9 25 34 .18 13 des 0.14 -10 35 14 13 17 37 13 34 23 dey . 69 .20 18 26 26 34 54 33 47 44 dg 2.1 26 32 33 33 42 64 39 68 56 d 6.0 32 37 43 38 56 74 49 77 70 95 8 Table 26.--Composite particle-size distribution and statistics of bed material, Tanana River, 1981 [Percentage, by weight, finer than indicated sieve size] 1981 Lower end Upper end Chena R. Particle Byers Island Fairbanks Goose Is. Goose Is. North Pole Floodwa, size South Middle North Single Single Single South North South lorth (mm) channel channel __ channel channel channel channel channel channel __channel__channel 128 --- --- --- --- 100 --- --- 100 100 100 64 100 100 100 100 98.7 100 100 88.3 95.3 94.7 32 94.0 97.6 88.9 91.5 83.8 77.3 86.8 64.5 77.4 62.6 16 66.3 92.8 74.9 65.6 62.9 50.7 58.9 44.8 53.8 39.2 8 56.0 86.8 61.7 47.8 45.9 31.4 45.3 35.2 43.2 26.3 4 52.1 84.0 57.1 40.8 38.7 23.0 41.5 32.2 39.2 22.7 2 50.8 83.2 56.1 39.0 36.6 20.8 40.8 31.5 38.1 22.1 1 50.1 83.2 55.8 38.6 36.2 20.6 40.6 31.4 37.6 22.0 25 49.0 83.0 55.4 38.1 35.9 20.3 39.9 31.2 35.7 21.9 225 30.8 68.8 46.7 33.0 29.6 17.4 32.3 27.5 28.8 19.3 125 14.5 8.1 13.5 7.4 4.2 7.1 5.9 8.9 10.9 6.4 062 8 7) i) 1.7 2 2.8 2 1.0 3 3.8 Particle-size statistics Percent- finer [Particle diameter (mm) at given percent-finer parameter] parameter de 0.092 0.11 0.097 0.10 0.13 0.095 0.12 0.10 0.10 0. 089 dig 13 14 13 .17 19 .23 18 .17 16 +22 d35 30 18 .20 ae 745 9.2 32 7.6 47 13 deo 94 21 32 8.7 9.4 16 10 19 12 22 des 15 -24 9.4 16 17 23 18 32 22 33 dey 23 4.1 24 24 32 34 29 54 38 46 dg 27 11 33 30 38 38 34 66 48 54 d 33 20 38 36 46 42 39 76 63 65 95 Table 27.--Summary of suspended-sediment data, Tanana River at Byers Island [NA, not available] Suspended sediment Median oncentration Transport rate Discharge particle Date (m2/s). (mg/L) (Mg/d) size (mm) 9-03-80 722 395 24,600 NA 9-16-80 547 360 17,000 NA 10-07-80 586 404 20,500 NA 3-03-81 156 72 970 NA 3-05-81 156 152 2,050 NA 3-11-81 159 127 1,740 NA 3-17-81 159 65 893 NA 3-25-81 161 119 1,660 NA 6-19-81 841 1,070 77,700 0.014 6-30-81 1,060 973 89,100 -047 7-13-81 1,720 5,330 792,000 -015 7-30-81 1,650 2,580 368,000 .028 8-13-81 1,610 2,740 381,000 019 9-04-81 917 976 77,300 - 058 10-07-81 354 162 4,950 NA Table 28.--Summary of suspended-sediment data, Tanana River at Fairbanks [NA, not available] Suspended sediment Median Discharge Concentration Transport rate particle Date (m3/s) (mg/L) (Mg/d) size (mm) 6-18-80 1,010 2,530 221,000 0.024 6-25-80 711 790 48,500 -052 7-15-80 1,400 2,520 305,000 .015 7-30-80 1,640 3,500 496,000 -018 8-11-80 1,340 2,620 303,000 .019 9-03-80 714 679 41,900 NA 9-16-80 532 452 20,800 NA 10-07-80 586 470 23,800 NA 10-23-80 345 352 10,500 NA 5-22-81 558 589 28,400 NA 6-18-81 864 1,140 85,100 .029 6-30-81 1,070 1,260 117,000 . 066 7-13-81 1,760 5,700 867,000 -011 7-29-81 1,722 2,940 437,000 .028 8-13-81 1,530 3,250 430,000 026 9-03-81 920 1,060 84,300 -028 10-06-81 368 164 5,210 NA 83 Table 29.--Summary of suspended-sediment data, Tanana River at lower end Goose Island [NA, not available] Suspended sediment Median Discharge Concentration Transport rate particle Date (m3/s) (mg/L) (Mg/d) size (mm) 9-05-80 666 497 28,600 NA 9-17-80 643 979 54,400 NA 10-08-80 581 362 18,200 NA 6-19-81 842 1,210 88,000 0.020 7-02-81 836 577 41,700 .016 7-16-81 1,480 2,320 297,000 .023 7-28-81 1,840 3,060 486,000 .020 8-14-81 1,650 2,870 409 ,000 -015 9-04-81 919 1,030 81,800 .020 10-07-81 354 601 18,400 NA Table 30.--Summary of suspended-sediment data, Tanana River at upper end Goose Island [NA, not available] _____ Suspended sediment Median Discharge Concentration Transport rate particle Date (m3/s) (mg/L) (Mg/d) size (mm) 9-05-80 666 597 34,400 NA 9-17-80 643 1,130 62,800 NA 10-08-80 581 374 18,800 NA 3-06-81 156 47 633 NA 3-24-81 161 51 709 NA 6-19-81 842 1,250 90,900 0.026 7-02-81 836 781 56,400 -050 7-16-81 1,480 2,540 325,000 . 033 7-28-81 1,840 3,120 496,000 -020 8-14-81 1,650 2,940 419,000 016 9-04-81 919 1,240 98,500 062 10-07-81 354 166 5,080 NA 84 Table 31.--Summary of suspended-sediment data, Tanana River near North Pole [NA, not available] Suspended sediment Median Discharge Concentration Transport rate particle Date (m3/s (mg/L) (Mg/d) size (mm) 6-24-80 742 865 55,500 0.046 7-17-80 1,380 2,840 339,000 -020 7-31-80 1,670 2,690 388,000 -028 8-12-80 1,440 2,900 361,000 024 9-04-80 670 478 27,700 NA 9-18-80 722 1,290 80,500 NA 10-09-80 574 264 13,100 NA 6-16-81 765 854 56,500 - 062 7-01-81 940 780 63,300 . 036 7-14-81 1,650 3,760 536,000 .022 7-31-81 1,560 2,380 321,000 -019 8-12-81 1,630 2,960 417,000 -020 9-01-81 1,040 1,230 111,000 -015 10-15-81 345 160 4,770 NA Table 32.--Summary of suspended-sediment data, Tanana River above Chena River Floodway [NA, not available] Suspended sediment Median Discharge Concentration Transport rate particle Date (m2/s), ___ (mg/L) (Mg/d) size (mm) 9-04-80 696 596 35,800 NA 9-18-80 720 1,410 87,700 NA 10-09-80 571 311 15,300 NA 6-17-81 781 938 63,300 0.029 7-01-81 940 1,010 82,000 .075 7-15-81 1,500 2,880 373,000 .017 7-31-81 1,560 2,440 329,000 .021 8-12-81 1,630 2,780 392,000 018 9-01-81 1,040 1,140 102,000 . 008 10-15-81 453 211 8,260 019 85 Table 33.--Summary of bedload data, Tanana River at Byers Island Bedload-transport rate Median Discharge Width Unit Total particle Date (m3/s) (m) [(kg/m)/s]_ _(Mg/d) size (mm) 7-15-80 1,380 424 0.04968 1,820 0.37 7-29-80 1,650 503 . 03866 1,680 .65 8-11-80 1,380 434 . 04854 1,820 -36 9-03-80 722 187 . 02005 324 ~35 9-16-80 547 184 -02554 406 -20 10-07-80 586 183 . 02606 412 ~25 6-19-81 841 186 . 06471 1,040 35 6-30-81 1,060 315 . 10839 2,950 -45 7-13-81 1,720 520 .01758 790 .27 7-30-81 1,650 503 .06811 2,960 31 8-13-81 1,610 524 .02717 1,230 25 9-04-81 917 201 .02281 396 19 10-07-81 354 185 .01752 280 sel Table 34.--Summary of bedload data, Tanana River at Fairbanks Bedload-transport rate Median et Width Unit Total particle Date (m3/s (m) [(kg/m)/s]__(Mg/d) size (mm) 6-18-80 1,010 296 0.10197 2,610 0.45 6-25-80 711 282 - 05843 1,420 .30 7-15-80 1,400 320 -05518 1,530 44 7-30-80 1,640 361 - 14716 4,590 8.4 8-11-80 1,340 350 .11238 3,400 8.8 9-03-80 714 195 - 02938 495 44 9-16-80 532 152 - 02708 356 4.0 10-07-80 586 169 -09172 1,340 5.3 10-23-80 345 107 - 03267 302 8.3 5-22-81 558 177 -11748 1,800 43 6-18-81 864 283 -17135 4,190 .35 6-30-81 1,070 283 - 05790 1,420 32 7-13-81 1,760 405 . 13419 4,700 10 7-29-81 1,722 378 -21618 7,060 . 36 8-13-81 1,530 357 - 06810 2,100 .25 9-03-81 920 294 - 04756 1,210 .19 10-06-81 368 247 -00246 52.5 -23 86 Table 35.--Summary of bedload data, Tanana River at lower end Goose Island Bedload-transport rate Median Discharge Width Unit Total particle Date _(m3/s) (m) [(kg/m)/s] _(Mg/d) size (mm) 7-16-80 1,360 195 0.13936 2,350 0.75 7-30-80 1,670 194 . 15003 2,510 44 8-11-80 1,380 192 - 23138 3,840 10 9-05-80 666 192 . 03888 645 .21 9-17-80 643 189 03333 544 18 10-08-80 581 188 .01295 210 -21 6-19-81 842 189 - 18095 2,950 34 7-02-81 836 191 . 16464 2,720 34 7-16-81 1,480 191 . 37695 6,220 17 7-28-81 1,840 194 «25793 4,320 9.4 8-14-81 1,650 299 - 28422 7,340 11 9-04-81 919 292 -03591 906 20 10-07-81 354 159 .01570 216 -21 Table 36.--Summary of bedload data, Tanana River at upper end Goose Island Bedload-transport rate Median Discharge Width Unit Total particle Date m3/s m kg/m) /s Mg/d size (mm 7-16-80 1,360 312 0.14832 4,000 0.67 7-30-80 1,670 313 - 07038 1,900 8.4 8-11-80 1,380 314 . 03600 977 .37 9-05-80 666 156 .01907 257 39 9-17-80 643 172 .00958 142 .22 10-08-80 581 144 . 01500 187 8.1 3-06-81 156 107 .03650 337 .39 3-24-81 161 107 - 00252 23.3 -40 6-19-81 842 179 . 19849 3,070 43 7-02-81 836 207 . 16748 3,000 .32 7-16-81 1,480 311 -13132 3,530 4.6 7-28-81 1,840 312 . 12208 3,290 10 8-14-81 1,650 311 - 10256 2,760 2.7 9-04-81 919 196 - 06994 1,180 .29 10-07-81 354 152 .00910 120 .23 87 Table 37.--Summary of bedload data, Tanana River near North Pole Bedload-transport rate Median Discharge Width Unit Total particle Date (m3/s) (m) [(kg/m)/s]__(Mg/d) size (mm) 6-24-80 742 398 0.06252 2,150 0.78 7-17-80 1,380 456 - 06777 2,670 17 7-31-80 1,670 559 09048 4,370 2.4 8-12-80 1,440 549 - 01767 838 -19 9-04-80 670 416 02443 878 5.1 9-18-80 722 347 - 00861 258 -20 10-09-80 574 317 - 00730 200 .20 6-16-81 765 551 . 08234 3,920 4.5 7-01-81 940 570 04325 2,130 81 7-14-81 1,650 693 - 07432 4,450 -46 7-31-81 1,560 637 -09212 5,070 1.4 8-12-81 1,630 652 - 04917 2,770 7.5 9-01-81 1,040 433 03555 1,330 +22 10-15-81 345 248 .00985 211 .21 Table 38.--Summary of bedload data, Tanana River above Chena River Floodway Bedload-transport rate Median Discharge Width Unit Total particle Date m3/s m kg/m) /s Mg/d size (mm 7-18-80 1,420 529 0.04048 1,850 0.31 8-01-80 1,450 495 . 14006 5,990 -49 8-12-80 1,440 578 .12375 6,180 9.2 9-04-80 696 361 . 02421 755 .27 9-18-80 720 359 - 03933 1,220 5.8 10-09-80 571 362 .01055 330 .20 6-17-81 781 370 - 09947 3,180 ~55 7-01-81 940 447 -05515 2,130 16 7-15-81 1,500 515 -07596 3,380 47 7-31-81 1,560 492 - 09598 4,080 5.8 8-12-81 1,630 476 . 03039 1,250 .29 9-01-81 1,040 615 . 01393 740 .19 10-15-81 354 284 -02193 538 28 88 Table 39.--Particle-size distribution of suspended sediment, Tanana River at Byers Island [Percentage, by weight, finer than particle size indicated] Particle size (mm) 9-03-80 9-16-80 10-07-80 3-03-81 3-05-81 3-11-81 3-17-81 3-25-81 1.0 --- --- --- --- --- --- --- --- -50 --- --- --- --- --- --- --- --- ~25 --- --- --- --- --- --- --- --- -125 --- --- --- --- --- --- --- --- . 062 45 42 41 52 77 55 41 65 .031 --- --- --- --- --- --- --- --- .016 --- --- --- --- --- --- --- --- . 008 --- --- --- --- --- --- --- --- -004 --- --- --- --- --- --- --- --- -002 --- --- --- --- --- --- --- --- Particle size (mm) 6-19-81 6-30-81 7-13-81 7-30-81 8-13-81 9-04-81 10-07-81 1.0 --- --- --- --- --- --- --- -50 --- --- --- --- --- 100 --- .25 100 100 100 100 100 96 --- -125 89 78 96 83 90 68 --- .062 73 55 83 64 74 51 37 -031 63 43 66 52 59 42 --- -016 52 32 51 40 47 36 --- . 008 39 26 38 30 35 28 --- .004 27 18 25 21 24 19 --- -002 15 13 15 14 16 14 ae 89 Table 40.--Particle-size distribution of suspended sediment, Tanana River at Fairbanks [Percentage, by weight, finer than particle size indicated] Particle ‘ size (mm) 6-18-80 6-25-80 7-15-80 7-30-80 8-11-80 9-03-80 9-16-80 10-07-80 10-23-80 1.0 --- --- --- --- --- --- --- --- --- . 50 100 100 100 100 100 --- --- --- --- 225 99 98 99 98 99 --- --- --- --- .125 91 75 92 92 87 --- --- --- --- .062 74 53 79 78 72 31 35 35 36 -031 57 42 64 61 59 --- --- --- --- - 016 39 34 51 47 47 --- --- --- --- . 008 25 28 38 34 35 --- --- --- --- - 004 16 21 27 24 23 --- --- --- --- -002 10 15 17 15 15 --- --- --- --- Particle size (mm) 5-22-81 6-18-81 6-30-81 7-13-81 7-29-81 8-13-81 9-03-81 10-06-81 1.0 --- --- --- --- --- --- --- --- - 50 --- 100 100 --- --- --- 100 --- 25 --- 98 98 100 100 100 99 --- .125 --- 76 74 97 88 86 75 --- . 062 43 61 48 86 67 65 59 40 -031 --- 51 36 72 52 53 51 --- .016 --- 42 29 58 40 41 45 --- . 008 --- 31 22 41 28 29 28 --- - 004 --- 20 14 25 20 20 26 --- - 002 --- 12 8 17 12 12 18 --- 90 16 Table 41.--Particle-size distribution of suspended sediment, Tanana River at lower end Goose Island [Percentage, by weight, finer than particle size indicated] Particle 9-05-80 9-17-80 10-08-80 6-19-81 7-02-81 7-16-81 7-28-81 8-14-81 9-04-81 10-07-81 1.0 --- --- --- --- --- --- --- --- --- --- .50 --- --- --- --- --- --- --- --- --- --- 225 --- --- --- 100 100 100 100 100 100 --- .125 --- --- --- 85 85 90 94 93 81 --- -062 39 50 38 67 72 68 75 78 64 11 .031 --- --- --- 57 58 55 58 65 56 --- .016 --- --- --- 46 50 43 45 51 47 --- .008 --- --- --- 35 38 30 33 37 33 a - 004 --- --- --- 24 28 22 24 25 23 --- 002 --- --- --- 15 23 14 16 15 15 --- Table 42.--Particle-size distribution of suspended sediment, Tanana River at upper end Goose Island [Percentage, by weight, finer than particle size indicated] Particle size (mm) 9-05-80 9-17-80 10-08-80 3-06-81 3-24-81 6-19-81 1.0 --- --- --- --- --- --- -50 --- --- --- --- --- --- .25 --- --- --- --- --- 100 .125 --- --- --- --- --- 79 062 33 42 41 41 51 63 .031 --- --- --- --- --- 53 -016 --- --- --- --- --- 42 . 008 --- --- --- --- --- 30 .004 --- --- --- --- --- 20 .002 --- --- --- --- --- 13 Particle size (mm) 7-02-81 7-16-81 7-28-81 8-14-81 9-04-81 10-07-81 1.0 --- --- --- --- --- --- -50 100 --- --- --- 100 --- 25 98 100 100 100 98 --- -125 75 85 94 94 66 --- . 062 54 60 75 78 50 37 .031 42 49 58 63 44 --- 016 35 39 45 50 38 --- . 008 28 27 33 36 28 --- -004 22 18 23 25 18 --- .002 14 12 16 16 12 --- 92 Table 43.--Particle-size distribution of suspended sediment, Tanana River near North Pole [Percentage, by weight, finer than particle size indicated] Particle size (mm) 6-24-80 7-17-80 7-31-80 8-12-80 9-04-80 9-18-80 10-09-80 1.0 --- --- --- --- --- --- --- .50 100 100 100 100 --- --- --- .25 97 98 99 98 --- --- --- .125 76 86 89 86 --- --- --- -062 54 72 70 70 39 70 52 .031 45 56 52 55 --- --- --- .016 37 47 41 42 --- --- --- . 008 31 30 30 30 --- --- --- -004 23 20 21 20 --- --- --- .002 16 13 14 14 --- --- --- Particle size (mm) 6-16-81 7-01-81 7-14-81 7-31-81 8-12-81 9-01-81 10-15-81 1.0 --- --- --- --- --- --- --- .50 100 --- --- 100 100 100 --- -25 97 100 100 99 99 98 --- .125 67 81 91 91 91 78 --- . 062 50 57 70 75 76 66 43 -031 42 48 57 59 60 60 --- .016 36 40 44 46 45 51 --- . 008 29 30 32 33 32 39 --- -004 20 16 22 22 21 27 --- .002 12 16 13 15 12 16 --- 93 6 Table 44.--Particle-size distribution of suspended sediment, Tanana River above Chena River Floodway [Percentage, by weight, finer than particle size indicated] Particle size (mm) 9-04-80 9-18-80 10-09-80 6-17-81 7-01-81 7-15-81 7-31-81 8-12-81 9-01-81 10-15-81 50 eee oe ete 100 100 100 oe ot 100 awe £25 ite aie ae 98 97 99 100 100 98 ae £125 eae ee --- 75 66 88 90 94 86 os 062 31 75 43 58 44 71 72 78 73 36 .031 uoe sae a 51 36 60 56 62 65 aa -016 iad ied ae 42 30 49 46 47 55 ae .008 bie a a 31 23 35 32 33 50 a 004 aha it ae 21 16 22 22 22 34 aes .002 --- --- --- 13 12 13 17 16 18 --- Table 45.--Particle-size distribution of bedload sediment, Tanana River at Byers Island [Percentage, by weight, finer than particle size indicated] Particle 7-15-80 7-29-80 8-11-80 9-03-80 9-16-80 10-07-80 6-19-81 128 --- --- --- --- --- --- --- 64 100 --- --- --- --- --- --- 32 98.3 100 100 100 --- --- 100 16 93.5 99.0 94.9 97.4 --- --- 91.8 8 81.9 91.5 87.0 85.3 --- --- 81.1 4 75.5 87.5 79.2 77.2 --- --- 75.0 2 73.8 85.4 76.5 73.8 --- --- 72.4 1 73.0 84.5 75.5 72.2 100 100 70.7 5 68.4 27.3 73.2 70.6 99.8 99.9 69.3 .25 27.0 14.0 25.2 31.5 74.0 49.8 33.0 .125 4.0 4.0 6.5 10.5 8.9 8.6 4.0 .062 1.1 7 7 4 i) .2 -3 Particle size (mm) 6-30-81 7-13-81 7-30-81 8-13-81 9-04-81 10-07-81 128 --- --- --- --- --- --- 64 100 --- --- 100 --- --- 32 97.9 --- 100 95.5 100 --- 16 85.1 100 95.6 86.0 98.7 --- 8 65.3 98.5 90.9 73.5 97.5 100 4 56.9 97.5 87.6 67.2 97.2 99.9 2 55.4 97.3 85.9 65.2 97.1 99.9 1 55.2 97.2 85.0 64.7 97.0 99.0 5 54.9 96.2 82.8 64.7 97.0 99.0 .25 26.4 42.7 35.0 49.8 86.0 70.0 .125 3.5 20.5 8.4 6.3 6.0 3.0 -062 4 5.5 1.1 6 4 -l 95 Table 46.--Particle-size distribution of bedload sediment, Tanana River at Fairbanks [Percentage, by weight, finer than particle size indicated] Particle size (mm) 6-18-80 6-25-80 7-15-80 7-30-80 8-11-80 9-03-80 9-16-80 10-07-80 10-23-80 * 128 --- --- --- --- --- --- --- --- --- 64 100 --- 100 100 100 --- --- --- --- 32 97.7 100 85.0 96.8 96.3 100 100 100 100 16 79.4 96.1 72.7 80.6 73.3 95.8 73.9 93.9 76.1 8 64.5 93.0 64.6 47.3 45.9 80.3 57.5 60.0 48.3 4 57.6 91.6 60.0 29.4 32.8 64.7 49.9 43.1 39.6 2 56.2 91.3 58.6 24.4 28.2 59.9 47.8 41.2 37.8 1 55.5 91.2 58.2 22.7 26.7 58.0 47.0 41.0 37.5 5 54.5 90.6 57.4 20.1 26.0 56.0 46.0 40.0 37.0 25 23.7 31.8 20.8 4.0 18.0 25.0 34.0 25,0 27.0 .125 3.9 2.4 3.1 1.1 2.0 1.0 2.0 1.0 1.0 - 062 1.4 4 9 +3 +3 ok oe me) wh Particle size (mm) 5-22-81 6-18-81 6-30-81 7-13-81 7-29-81 8-13-81 9-03-81 10-06-81 128 --- --- --- --- --- --- --- --- 64 100 --- --- 100 --- 100 --- --- 32 92.9 100 100 95.8 100 94.1 100 --- 16 79.9 95.0 96.6 71.1 94 88.5 99.0 --- 8 67.0 84.9 91.7 36.5 84.7 76.5 98.0 100 4 62.5 79.8 89.8 21.4 78.5 68.6 97.2 99.9 2 61.6 78.3 89.3 18.0 76.4 65.4 96.7 99.7 1 61.2 77.7 89.0 17.1 75.8 64.3 96.6 99.0 5 60.7 76.3 88.4 15.8 74.9 63.5 96.6 99.0 .25 14.4 23.3 24.9 2.7 23.6 49.8 85.2 59.0 -125 1.5 2.5 4.5 1.2 4.8 6.1 5.2 3.0 062 1 3 J 2 7 7 2 0 96 Table 47.--Particle-size distribution of bedload sediment, Tanana River at lower end Goose Island [Percentage, by weight, than particle size indicated] 1. NWOADNOWW Particle size (mm) 7-16-80 7-30-80 8-11-80 9-05-80 9-17-80 10-08-80 6-19-81 128 --- --- --- --- --- --- --- 64 100 100 100 --- --- --- --- 32 98.3 88.4 89.2 --- --- --- 100 16 80.9 77.2 65.6 --- --- --- 98. 8 61.5 65.3 41.0 --- --- 100 95. 4 53.9 59.3 26.9 --- 100 99.6 94, 2 51.3 57.3 22.2 --- 99.9 99.3 93. 1 50.5 56.8 21.0 --- 99.8 99.0 93. 5 49.3 56.1 20.0 100 99.8 99.0 90. .25 17.6 22.5 15.0 73.0 89.0 73.0 16. .125 2.7 3.4 2.0 4.0 6.0 3.0 .062 -6 8 re -2 -4 od: Particle size (mm) 7-02-81 7-16-81 7-28-81 8-14-81 9-04-81 10-07-81 128 --- --- --- --- --- --- 64 --- 100 100 100 --- --- 32 100 73.1 95.7 92.9 100 --- 16 97.3 46.4 72.0 68.7 98.5 100 8 89.3 28.9 43.0 36.3 94.3 99.9 4 84.3 22.0 31.3 18.8 91.5 99.3 2 83.2 19.5 28.1 14.3 90.3 99.0 1 83.1 18.9 27.2 13.2 89.3 98.7 5 82.7 18.5 26.2 12.9 89.3 98.7 .25 22.4 5.8 16.0 6.6 73.2 72.8 .125 2.7 15 2.9 0.7 7.2 3.0 .062 be PR: 5 1 ia .0 97 Table 48.--Particle-size distribution of bedload sediment, Tanana River at upper end Goose Island [Percentage, by weight, finer than particle size indicated] Particle size (mm) 7-16-80 7-30-80 8-11-80 9-05-80 9-17-80 10-08-80 3-06-81 3-24-81 128 --- --- --- --- --- --- --- --- 64 100 100 100 --- --- --- 100 --- 32 94.1 93.9 84.3 100 --- 100 96.8 --- 16 82.0 67.7 63.6 94.9 100 65.7 94.0 100 8 73.7 48.5 60.0 84.5 92.1 49.6 90.9 94.9 4 70.1 39.6 58.3 81.3 90.0 45.8 87.1 80.8 2 69.4 26.3 57.8 80.5 90.2 44.7 86.3 79.1 1 69.2 25.5 57.6 80.1 90.0 44.6 86.0 77.9 25 35.2 23.9 57.4 78.5 89.0 44.6 83.2 75.6 225 8.2 14.5 41.1 6.8 63.0 38.0 5.4 6.2 -125 1.1 2.9 10.0 6.4 4.0 1.0 2.5 2.3 .062 «2 +5 15 al 1 .0 = =e Particle size (mm) 6-19-81 7-02-81 7-16-81 7-28-81 8-14-81 9-04-81 10-07-81 128 --- --- --- --- --- --- --- 64 100 --- 100 100 100 --- --- 32 95.0 100 91.5 91.0 88.9 100 --- 16 80.9 98.1 72.0 67.1 75.3 92.1 100 8 69.2 88.6 56.9 39.7 58.5 78.4 95.9 4 65.7 82.6 48.4 27.1 51-3 71.4 91.5 2 65.0 81.7 46.4 23.3 49.0 69.5 91.4 1 64.8 81.6 45.7 21.9 48.4 68.2 91.0 5 64.0 81.5 42.5 20.4 47.8 67.2 91.0 .25 8.5 32.7 17.0 9.2 37.4 45.2 59.0 .125 1.0 2.9 3.4 2.8 7.7 2.0 3.0 .062 1 3 6 -6 i) .l 0 98 66 Table 49.--Particle-size distribution of bedload sediment, Tanana River near North Pole [Percentage, by weight, finer than particle size indicated] Particle South Channel size (mm) -24- -17-80 7-31-80 8-12-8 128 --- --- --- --- --- --- --- --- --- --- --- 64 100 --- 100 --- --- --- --- 100 100 --- --- 32 95.7 --- 93.4 100 100 --- --- 91.0 64.7 --- 100 16 87.4 --- 74.3 93.0 97.8 100 --- 66.0 42.8 100 78.5 8 79.6 --- 52.3 88.5 95.0 99.2 100 31.3 37.1 98.1 67.2 4 76.0 --- 43.8 87.2 94.8 98.9 99.9 25.8 35.5 97.2 66.0 2 74.9 --- 41.4 87.0 94.3 98.8 99.7 24.9 34.8 96.8 65.7 1 74.4 100 40.4 86.9 93.9 98.7 99.6 24.1 34.3 96.7 65.6 5 73.4 99.4 38.8 86.9 93.0 98.7 99.6 22.4 33.4 94.3 65.6 .25 35.4 85.6 11.1 75.0 55.0 75.0 78.0 8.4 17.4 26.4 60.0 .125 5.3 13.9 2.8 20.0 3.0 5.0 3.0 1.0 3.3 7.0 19.0 .062 9 2.7 -6 4.0 .2 4 oy 2 .8 2.0 3.0 Particle South Channel Composite Channels size (mm) 9-04-80 9-18-80 10-09-80 6-24-80 7-17-80 7-31-80 8-12-80 9-04-80 9-18-80 10-09-80 128 --- --- --- --- --- --- --- --- --- --- 64 100 --- --- 100 100 100 --- 100 --- --- 32 86.7 --- --- 93.5 67.6 94.4 100 89.9 --- --- 16 71.7 100 --- 77.2 47.5 78.0 86.9 78.1 100 --- 8 39.1 94.4 100 56.6 42.3 59.0 79.6 52.7 98.7 100 4 33.7 89.3 98.3 52.1 40.8 51.6 78.3 48.6 98.0 99.7 2 33.3 88.6 98.3 51.1 40.2 49.4 78.1 48.2 97.8 99.5 1 33.0 88.0 98.0 50.5 39.7 48.6 78.0 47.9 97.7 99.4 5 33.0 88.0 98.0 49.1 38.9 46.9 78.0 47.6 97.7 99.4 .25 19.0 80.0 91.0 22.5 23.0 13.3 68.7 27.8 75.5 79.8 .125 1.0 7.0 11.0 3.3 4.2 3.4 19.6 1.5 5.2 4.1 062 1 4 .2 6 1.0 8 3.6 1 -4 l oot Table 49.--Continued [Percentage, by weight, finer than particle size indicated] Particle North Channel South Channel size (mm) 6-16-81 7-01-81 7-14-81 7-31-81 8-12-81 9-01-81 10-15-81 6-16-81 7-01-81 7-14-81 7-31-81 128 --- --- --- 100 --- --- --- --- --- --- --- 64 100 100 100 95.2 100 100 --- --- 100 100 100 32 81.0 84.7 89.2 82.1 96.8 94.0 --- 100 94.4 83.9 96.6 16 64.7 67.3 80.3 67.3 76.7 81.9 100 91.7 62.2 53.0 86.7 8 54.7 55.8 71.1 51.5 64.8 78.2 99.7 64.8 56.0 38.9 79.4 4 50.6 51.8 67.6 43.7 59.2 76.4 99.3 44.9 55.7 34.2 75.7 2 48.8 49.8 66.6 41.3 57.3 75.6 99.1 42.8 55.7 33.1 74.9 1 48.1 49.1 66.3 40.4 56.6 75.2 99.0 42.8 55.7 32.8 74.4 5 46.2 48.0 65.3 39.9 56.0 74.8 99.0 42.4 55.3 32.3 73.4 .25 11.9 20.0 28.3 29.0 43.9 57.0 69.0 14.9 21.6 15.2 57.6 .125 1.4 3.2 8.1 2.6 8.3 3.6 4.0 1.1 2.9 2.9 6.3 . 062 «1 3 1.8 .3 -6 -3 1 l .4 ~5 ue Particle South Channel Composite Channels size (mm) 8-12-81 9-01-81 10-15-81 6-16-81 7-01-81 7-14-81 7-31-81 8-12-81 9-01-80 10-15-81 128 --- --- --- --- --- --- 100 --- --- --- 64 --- --- --- 100 100 100 96.5 100 100 --- 32 100 --- 100 89.7 86.5 87.4 86.0 98.2 96.2 100 16 81.9 100 81.5 77.0 66.4 71.2 72.6 79.1 88.7 96.7 8 34.0 97.1 78.5 59.3 55.8 60.4 59.0 50.9 85.2 95.9 4 20.8 96.7 77.1 48.0 52.5 56.5 52.3 41.8 84.0 95.3 2 19.6 96.7 77.0 46.1 50.9 55.5 50.4 40.2 83.5 95.1 1 19.4 96.0 76.8 45.7 50.3 55.2 49.6 39.7 83.0 95.0 5 19.3 96.0 76.0 44.5 49.3 54.3 49.0 39.3 82.7 94.9 225 15.9 72.0 71.0 13.3 20.3 24.0 36.8 31.2 62.6 69.4 .125 2.0 6.0 3.0 1.3 3.1 6.4 3.6 5.4 4.5 3.8 -062 .2 3 .0 -l 3 1.4 -4 4 3 l TOT Table 50.--Particle-size distribution of bedload sediment, Tanana River above Chena River Floodway [Percentage, by weight, finer than particle size indicated] Particle North Channel South Channel size (mm) 7-18-80 8-01+80 8-12-80 9-04-80 9-18- 80. 10-09-80 7-18-80 8-01-80 8-12-80 128 --- --- --- --- --- --- --- --- --- 64 100 100 100 --- --- --- 100 100 100 32 95.4 95.6 80.8 100 --- --- 84.0 94.2 92.5 16 89.6 77.5 59.6 83.7 100 --- 71.8 77.2 86.1 8 82.5 56.9 47.7 77.6 98.4 --- 64.2 67.7 40.0 4 79.3 49.5 42.6 77.1 97.1 100 62.6 62.8 26.9 2 78.6 48.2 40.3 76.8 96.9 99.9 62.1 60.8 24.6 1 78.2 47.7 39.1 76.6 96.0 99.9 61.8 59.8 24.1 5 76.8 45.9 34.1 76.6 96.0 99.0 60.9 58.1 22.4 25 38.7 14.8 8.2 48.0 77.0 78.0 37.2 17.6 9.3 -125 8.5 2.8 3.2 2.0 5.0 4.0 9.7 5.5 2.1 062 2.2 4 4 wl 3 1 2.9 6 2 Particle South Channel Composite Channels size (mm) 9-04-80 9-18-80 10-09-80 7-18-80 8-01-80 8-12-80 9-04-80 9-18-80 10-09-80 128 --- --- --- --- --- --- --- --- --- 64 --- 100 --- 100 100 100 --- 100 --- 32 100 78.8 --- 93.3 95.1 85.1 100 87.2 --- 16 83.5 52.9 --- 86.4 77.4 69.3 83.7 71.7 --- 8 76.7 23.8 --- 79.2 61.0 44.9 77.4 53.5 --- 4 71.5 12.1 100 76.3 54.6 36.8 75.9 46.0 100 2 68.5 11.6 99.8 75.6 53.0 34.5 75.0 45.6 99.9 1 67.8 11.6 99.5 75.2 52.3 33.6 74.7 45.2 99.8 5 67.0 11.6 98.0 73.9 50.6 29.8 74.6 45.2 98.9 25 38.0 6.0 72.0 38.4 15.9 8.6 45.9 34.3 77.2 125 1.0 1.0 3.0 8.7 3.8 2.8 1.8 2.6 3.9 062 el 1 1 2.3 7) 3 wl 2 wl Oot Table 50.--Continued [Percentage, by weight, finer than particle size indicated] Particle North Channel South Channel size (mm) 1-81 6-17-81 7-01-81 7-15-81 7-31-81 128 --- --- --- --- --- --- --- --- --- --- --- 64 100 100 --- 100 100 --- --- 100 --- 100 100 32 88.9 70.6 100 98.0 92.1 --- 100 86.6 100 75.6 73.0 16 77.5 47.1 90.8 83.5 92.1 100 91.2 60.5 68.2 55.6 50.1 8 72.1 35.1 79.1 63.9 87.9 99.1 81.6 40.3 48.8 42.5 37.3 4 68.5 31.3 72.7 56.5 85.2 98.2 77.9 24.8 42.3 33.5 26.7 2 66.9 29.5 70.3 54.3 83.8 97.7 77.1 21.8 39.5 30.8 20.1 1 66.0 28.8 69.5 53.2 82.9 96.8 76.1 21.2 37.5 29.5 18.3 5 60.5 27.9 68.4 52.2 81.6 96.7 75.6 19.3 34.2 26.9 18.0 25 11.6 10.1 22.9 35.5 55.2 88.1 43.7 2.1 2.7 8.9 12.6 125 1.4 1.8 4.5 4.0 9.3 10.1 3.0 4 9 2.5 1.4 062 1 3 8 3 2.1 4 0 1 0 4 1 Particle South Channel Composite Channels size (mm) 8-12-81 9-01-81 10-15-81 6-17-81 7-01-81 7-15-81 7-31-81 8-12-81 9-01-81 10-15-81 128 --- --- --- --- --- --- --- --- --- --- 64 100 --- --- 100 100 100 100 100 --- --- 32 85.1 100 --- 88.3 75.2 91.5 88.6 88.8 100 100 16 64.1 84.0 --- 72.9 50.4 78.5 71.0 78.7 98.3 94.4 8 56.0 75.3 100 63.5 37.3 66.3 53.9 72.6 96.6 88.1 4 53.3 72.6 99.9 56.7 33.0 59.0 45.3 69.9 95.4 85.7 2 51.1 71.5 99.9 54.8 31.1 56.5 41.4 68.1 94.9 85.2 1 48.8 70.0 96.0 53.9 30.2 55.5 40.1 66.6 93.9 83.2 5 47.0 69.0 95.0 49.4 28.9 53.9 39.4 65.0 93.7 82.5 25 36.5 51.0 43.0 9.0 8.9 18.0 26.9 46.2 84.2 43.5 125 5.4 4.0 3.0 1.1 1.6 3.8 3.0 7.4 9.4 3.0 062 9 1 1 1 2 7 0 15 3 el Table 51.--Statistical data for particle-size distribution of bedload sediment, Tanana River at Byers Island [Particle diameter (mm) at given percent-finer parameter] Percent finer parameter 7-15-80 7-29-80 8-11-80 9-03-80 9-16-80 10-07-80 6-19-81 d, 0.13 0.14 0.11 0.10 0.11 0.11 0.13 dig .20 .28 19 .16 14 15 19 d3e 29 ~55 -29 .27 .17 .21 -26 de .37 -65 36 .35 -20 25 35 des -47 -76 -44 ~45 -23 ser -46 dea 8.9 -99 6.0 7.1 -28 31 9.4 dog 12 6.0 9.9 9.6 - 30 <33 14 dg¢ 19 9.8 16 13 34 - 36 18 Percent finer parameter 6-30-81 7-13-81 7-30-81 8-13-81 9-04-81 10-07-81 d, 0.14 0.06 0.10 0.12 0.12 0.13 qi6 +20 11 -16 16 14 -16 d35 31. .20 +25 -21 olf .19 de9 45 -27 +31 +25 -19 -21 des 7.8 -31 37 1.4 +21 -24 doq 15 38 -76 14 24 -30 dog 19 42 6.5 20 30 -33 dos 24 48 14 30 -41 -38 103 Table 52.--Statistical data for particle-size distribution of bedload sediment, Tanana River at Fairbanks [Particle diameter (mm) at given percent-finer parameter] Percent finer parameter 6-18-80 6-25-80 7-15-80 7-30-80 8-11-80 9-03-80 9-16-80 10-07-80 10-23-80- d, 0.14 0.15 0.14 0.27 0.16 0.17 0.15 0.17 0.16 dig 21 -20 22 -44 24 22 20 -22 721 dye 33 26 34 5.0 4.5 32 .27 -40 44 deg 45 -30 44 8.4 8.8 44 4.0 5.3 8.3 des 8.2 +35 8.2 11 13 4.0 11 8.6 12 dog 18 44 30 18 20 9.0 18 12 17 dog 21 49 35 21 24 11 19 14 19 dos 26 12 39 28 29 15 21 17 21 Percent finer parameter 5-22-81 6-18-81 6-30-81 7-13-81 7-29-81 8-13-81 9-03-81 10-06-81 ds 0.17 0.15 0.13 0.31 0.13 0.12 0.12 0.14 dig .26 .21 .20 52 .20 .16 15 .17 dg . 36 .29 .28 7.5 -30 .21 17 .20 deg -43 oo se 10 36 .25 19 .23 des 5.8 -43 .37 14 -43 1.5 sel .26 dea 19 7.1 -47 21 7.5 12 .25 ~32 dg 26 11 4.3 25 11 19 «31 ~35 dg 35 16 12 30 17 33 -43 -40 104 Table 53.--Statistical data for particle-size distribution of bedload sediment, Tanana River at lower end Goose Island [Particle diameter (mm) at given percent-finer parameter] Percent finer parameter 7-16-80 7-30-80 8-11-80 9-05-80 9-17-80 10-08-80 6-19-81 de 0.15 0.14 0.17 0.13 0.12 0.13 0.16 dig 24 21 28 .16 .14 16 25 doe . 38 33 6.0 19 17 19 -30 dey 75 44 10 21 18 21 34 dee 8.9 7.7 16 23 -20 ara - 38 dog 17 24 26 28 24 29 245 dgq 20 33 33 30 - 26 33 -49 dos 25 38 37 33 -30 -38 6.4 Percent finer parameter 7-02-81 7-16-81 7-28-81 8-14-81 9-04-81 10-07-81 d, 0.15 0.23 0.15 0.23 0.11 0.13 dig «ae -45 -25 2.6 15 -16 dae 29 10 5.0 7.6 .18 19 dey 34 17 9.4 11 20 21 dee -40 26 13 15 23 24 dg4 3.6 36 21 23 -38 -30 dg 8.3 39 25 28 1.6 33 dog 12 43 31 35 8.6 39 105 Table 54.--Statistical data for particle-size distribution of bedload sediment, Tanana River at upper end Goose Island {Particle diameter (mm) at given percent-finer parameter] Percent finer parameter 7-16-80 7-30-80 8-11-80 9-05-80 9-17-80 10-08-80 3-06-81 3-24-81 d, 0.21 0.15 0.09 0.12 0.13 0.16 0.23 0.21 dig .33 .28 15 .29 -16 -20 .29 -30 d35 -50 3.2 .23 35 .20 .24 .35 36 deg -67 8.4 .37 39 -22 8.1 .39 -40 des 91 14 17 44 . 26 15 -43 ~45 dog 18 23 32 7.4 -42 19 .62 4.5 dgg 24 27 35 11 1.0 20 6.7 5.8 dg 33 33 40 16 8.8 22 20 8.0 Percent finer parameter 6-19-81 7-02-81 7-16-81 7-28-81 8-14-81 9-04-81 10-07-81 de 0.21 0.14 0.14 0.17 0.11 0.14 0.14 dig 29 19 24 39 -16 18 -17 d35 37 26 42 6.2 24 23 .20 de 43 32 4.6 10 2.7 .29 -23 des 1.8 . 38 11 15 10 -46 -28 dog 18 4.7 23 25 24 10 -40 dog 23 8.5 30 31 33 14 -48 dos 32 11 36 36 38 18 6.7 106 Table 55.--Statistical data for particle-size distribution of bedload sediment, Tanana River near North Pole [Particle diameter (mm) at given percent-finer parameter] Percent finer North Channel parameter 6-24-80 7-17-80 7-31-80 8-12-80 9-04-80 9-18-80 10-09-80 qd, 0.12 0.08 0.16 0.07 0.14 0.13 0.13 dig .18 -13 .29 -ll .17 15 .16 d3e .25 16 -46 «15 .21 .18 18 deg .32 .18 6.6 .18 24 .20 -20 des -42 .20 12 .22 .29 .23 .23 doq 12 .25 21 -41 39 .29 227 dg 19 28 27 9.8 -45 +33 -30 dog 29 .33 34 17 8.0 .39 235 Percent finer North Channel parameter 6-16-81 7-01-81 7-14-81 7-31-81 8-12-81 9-01-81 10-15-81 qd, 0.18 0.14 0.10 0.15 0.11 0.13 0.13 dig .28 .22 .17 .20 .15 .17 .16 d35 -41 .37 -29 .37 -22 -21 .19 deg 3.2 2.1 . 38 7.0 ~35 .24 .21 des 16 14 -50 14 8.1 34 .24 dea 33 31 21 34 19 18 .30 dg 36 35 33 45 23 24 34 doe 41 40 37 63 28 33 39 107 Table 55.--Continued [Particle diameter (mm) at given percent-finer parameter] Percent finer South Channel parameter 6-24-80 7-17-80 7-31-80 8-12-80 9-04-80 9-18-80 10-09-80 de 0.21 0.15 0.10 0.07 0.17 0.11 0.10 dig . 38 24 .18 -11 ~24 .14 .13 dae 8.7 2.4 «27 7. 4.7 .17 - 16 dey 12 20 . 30 21 10 .19 .17 des 16 32 . 34 -46 14 .22 .19 deg 25 38 ~42 17 28 .35 -23 dog 31 40 - 46 19 34 4.3 ~25 dg 36 44 . 59 21 39 8.2 .34 Percent finer South Channel parameter 6-16-81 7-01-81 7-14-81 7-31-81 8-12-81 9-01-81 10-15-81 de 0.18 0.15 0.15 0.11 0.16 0.12 0.13 dig . 26 ~22 . 26 15 .25 215 .16 dg. 43 . 34 4.5 .20 8.1 .18 .19 de9 4.8 ~45 14 .23 9.9 .21 .21 des 8.0 17 20 34 12 -23 24 deg 12 23 32 12 16 . 32 17 dgg 15 27 35 19 18 . 38 18 dg 18 33 40 27 20 -47 20 108 Table 55.--Continued [Particle diameter (mm) at given percent-finer parameter ] Percent finer Composite Channels Parameter 6-24-80 7-17-80 7-31-80 8-12-80 9-04-80 9-18-80 10-09-80 de 0.14 0.13 0.15 0.07 0.16 0.12 0.13 dig .21 21 .27 -11 .21 15 15 dg 35 - 43 -41 16 . 33 .18 .18 d59 .78 17 2.4 .19 5.1 .20 .20 des 10 29 9.8 ~24 11 .23 -22 dey 20 37 19 12 22 .29 .27 dgg 26 40 25 17 32 - 34 . 30 dg5 34 44 33 19 37 -41 ~35 Percent finer Composite Channels parameter 6-16-81 7-01-81 7-14-81 7-31-81 8-12-81 9-01-81 10-15-81 de 0.18 0.15 0.11 0.13 0.12 0.13 0.13 dig .27 ~22 .19 .18 .18 -16 .16 dye ~42 Wor . 33 ~24 235 .20 .19 deo 4.5 . 81 - 46 1.4 7.5 -22 .21 des 9.8 15 11 11 11 .27 24 dey 23 29 27 28 18 4.3 34 dog 32 34 34 39 21 17 - 40 dogs, 37 39 38 55 25 27 1.0 109 Table 56.--Statistical data for particle-size distribution of bedload sediment, Tanana River above Chena River Floodway [Particle diameter (mm) at given percent-finer parameter] Percent finer North Channel parameter 7-18-80 8-01-80 8-12-80 9-04-80 9-18-80 10-09-80 6-17-81 de 0.09 0.15 0.17 0.14 0.13 0.13 0.18 dig .16 - 26 33 18 15 15 .27 435 .23 -41 .57 wee .18 .18 .37 ds . 30 4.2 9.1 26 .20 .20 -44 des 39 10 19 .37 .23 .22 .88 doq 9.2 19 33 16 .30 -28 23 dg 17 23 36 18 36 231 33 dg 30 31 41 20 -47 .37 38 Percent finer North Channel parameter 7-01-81 7-15-81 7-31-81 8-12-81 9-01-81 10-15-81 d, 0.18 0.13 0.13 0.09 0.10 0.14 dig 33 .21 .18 215 .14 .18 d35 7.9 31 As) .20 -16 -23 dey 17 . 38 -46 .23 .18 .28 dee 27 -47 8.3 31 .20 .39 dea 36 10 16 2.4 ~24 9.3 dog 39 15 19 11 28 14 dos 43 18 25 35 -41 18 110 Table 56.--Continued [Particle diameter (mm) at given percent-finer parameter] Percent finer South Channel Parameter 7-18-80 8-01-80 8-12-80 9-04-80 9-18-80 10-09-80 6-17-81 qd, 0.08 0.12 0.18 0.16 0.23 0.13 0.32 dig 15 .e3 37 20 5.2 16 46 36 24 35 6.2 24 11 .19 6.4 deg 36 44 9.1 33 15 21 11 dé5 8.6 5.4 11 47 22 24 18 deg 32 20 15 16 34 30 29 dgg 35 25 24 18 37 35 34 dg5, 40 33 35 20 41 41 39 Percent finer South Channel Parameter 7-01-81 7-15-81 7-31-81 8-12-81 9-01-81 10-15-81 qd, 0.28 0.18 0.18 0.12 0.13 0.14 dig 38 35 39 -17 .17 -18 de 59 4.5 6.9 24 -21 23 dey 8.3 12 16 1.4 25 .27 des 14 22 25 16 ~42 31 den 18 35 36 31 16 39 dgq 20 38 39 35 18 ~ 44 dog 22 42 43 39 20 50 111 Table 56.--Continued [Particle diameter (mm) at given percent-finer parameter] Percent finer Composite Channels parameter 7-18-80 8-01-80 8-12-80 9-04-80 9-18-80 10-09-80 6-17-81 de, 0. 09 0.14 0.18 0.15 0.14 0.13 0.20 dig . 16 225 .34 .18 19 .15 -30 d35 24 38 2.3 23 26 .18 41 dc 231 -49 9.2 .27 5.8 .20 -55 d¢5 41 9.3 14 39 12 «23 8.9 dog 13 19 30 16 27 . 28 25 dog 22 24 35 18 34 . 32 33 dg 34 32 39 20 38 34: 38 Percent finer Composite Channels parameter 7-01-81 7-15-81 7-31-81 8-12-81 9-01-81 10-15-81 d, 0.19 0.14 0.14 0.10 0.11 0.14 dig 34 +23 .20 .16 .14 18 d35 5.5 . 36 - 40 .22 .17 . 23 deg 16 47 5.8 29 19 28 des 24 7.0 12 . 50 .21 ~35 dey 35 21 26 22 25 1.4 dog 38 29 33 33 . 36 9.5 dos 42 36 38 38 2nd 16 112 str Table 57.--Composite size distribution (transport-rate weighted) of bedload sediment, Tanana River, 1980 [In percent by weight] Lower end Upper end Particle Byers Island Fairbanks Goose Is. Goose Is. North Pole Chena R. Floodway size Percent Percent Percent Percent Percent Percent Percent Percent Percent Percent Percent Percent (mm) retained finer retained finer retained finer retained finer retained finer retained finer 128 --- oe --- --- o-- --- ~-- --- --- --- --- == 64 --- 100 --- 100 --- 100 --- 100 --- 100 --- 100 32 0.5 99.5 3.2 96.8 7.5 92.5 6.8 93.2 8.1 91.9 9.0 91.0 16 3.1 96.4 15.9 80.9 15.8 76.7 16.8 76.4 15.3 76.6 15.2 75.8 8 8.0 88.4 24.5 56.4 16.7 60.0 10.7 65.7 16.7 59.9 17.5 58.3 4 5.4 83.0 12.6 43.8 8.7 51.3 4.7 61.0 5.1 54.8 6.3 52.0 2 1.9 81.1 3.3 40.5 2.9 48.4 3.8 57.2 1.3 53.5 1.6 50.4 1 9 80.2 1.1 39.4 8 47.6 4 56.8 6 52.9 7 49.7 25 17.3 62.9 1.4 38.0 -8 46.8 18.8 38.0 1.2 51.7 2.2 47.5 25 35.1 27.8 20.6 17.4 20.1 26.7 22.2 15.8 26.5 25.2 27.7 19.8 -125 22.2 5.6 15.5 1.9 23.8 2.9 12.9 2.9 20.5 4.7 16.0 3.8 - 062 4.8 -8 1.5 4 2.4 75 2.5 4 3.8 9 3.2 6 <.062 8 0 4 0 5 0 4 0 9 0 6 0 Percent- Particle-size statistics finer parameter [Particle diameter (mm) at given percent-finer parameter] d5 0.12 0.16 0.14 0.15 0.13 0.14 dig 19 +24 20 25 -20 22 dog +24 33 24 +35 25 +29 d35 +29 46 +34 46 33 38 dco 39 5.6 2.9 -78 48 1.3 des +54 9.9 9.7 7.2 9.7 10 dog «79 13 15 14 15 15 deg 4.6 17 21 21 21 22 do 8.8 21 27 27 28 30 d 13 28 35 34 35 36 VIL Table 58.--Composite size distribution (transport-rate weighted) of bedload sediment, Tanana River, 1981 [In percent by weight] Lower end Upper end Particle Byers Island Fairbanks. Goose Is. Goose Is. North Pole Chena R. Floodway size Percent Percent Percent Percent Percent Percent Percent Percent Percent Percent Percent Percent (mm) retained finer retained finer retained finer retained finer retained finer retained finer 128 --- --- --- --- --- --- --- --- --- 100 --- --- 64 --- 100 --- 100 --- 100 --- 100 1.1 98.9 --- 100 32 1.2 98.8 2.3 97.7 8.6 91.4 6.0 94.0 7.7 91.2 11.7 88.3 16 7.5 91.3 10.0 87.7 17.2 74.2 14.0 80.0 14.4 76.8 15.4 72.9 8 10.5 80.8 14.5 73.2 19.1 55.1 15.7 64.3 14.9 61.9 11.7 61.2 4 5.2 75.6 7.2 66.0 9.0 46.1 7.4 56.9 6.8 55.1 6.1 55.1 2 1.5 74.1 2.0 64.0 2.5 43.6 1.9 55.0 1.6 53.5 2.4 52.7 1 -6 73.5 6 63.4 .7 42.9 7 54.3 5 53.0 1.2 51.5 25 1.0 72.5 9 62.5 9 42.0 1.2 53.1 8 52.2 1.8 49.7 25 34.2 38.3 38.3 24.2 26.6 15.4 30.6 22.5 21.7 30.5 25.3 24.4 .125 31.6 6.7 20.9 3.3 13.4 2.0 19.2 3.3 26.6 3.9 21.2 3.2 - 062 5.7 1.0 2.9 4 1.7 3 2.9 4 3.5 4 2.8 4 <.062 1.0 0 -4 0 3 ) 4 0 4 0 -4 0 Percent- Particle-size statistics finer parameter [Particle diameter (mm) at given percent-finer parameter] de 0.11 0.14 0.16 0.14 0.13 0.14 dig 17 +21 25 -21 19 21 dog .20 25 33 -27 23 25 35 24 31 43 34 .29 34 d59 31 -40 5.4 -47 47 56 dee 42 2.8 11 8.2 9.1 9.9 dog 3.0 8.6 16 13 15 17 dey 9.6 13 22 19 22 25 dg 14 18 30 25 30 33 dos, 20 24 36 33 40 38 STT Table 59.--Sediment transport in the Tanana River at Fairbanks, water year 1980 Sediment-transport rate Ratio of Sediment Toads Discharge us pended Bedload average Sus pended Bedload Equated equaled EquaTed bedload to Cumulative CumuTative or Number Percentage or or average percentage percentage exceeded of of exceeded Average exceeded Average suspended Increment Cumulative of annual Increment Cumulative of annual _(m3/s)___ days time (Mg/d) (Wa/d) (Mg/d) (Mq/d) (percent) (Mg) (Mg) load (Mg) (Mg) load 1,670 1 0.3 525, 000 --- 3,930 --- 0.8 525, 000 525,000 2.4 3,930 3,930 1.4 1,650 1 +6 509,000 --- 3,850 --- 8 509,000 1,030,000 4.7 3,850 7,780 2.9 1,550 1 -8 430, 000 --- 3,480 --- 8 430,000 1,460,000 6.6 3, 480 11,300 4.2 1,460 1 1.1 366,000 --- 3,150 --- 9 366,000 1,830,000 8.3 3,150 14,400 5.3 1,450 1 1.4 360, 000 --- 3,120 -- 9 360,000 2,190,000 9.9 3,120 17,500 6.4 1,420 4 2.5 340,000 --- 3,010 --- 9 1,360,000 3,550,000 16.1 12,000 29,500 10.8 1,410 3 3.3 333, 000 --- 2,980 --- 9 999,000 4,550,000 20.7 8,940 38, 500 14.2 1,400 4 4.4 327,000 --- 2,940 --- 9 1,310,000 5,860,000 26.6 11,800 50,300 18.5 1,390 2 4.9 321,000 --- 2,910 --- 9 642,000 6,500,000 29.6 5,820 56,100 20.6 1, 380 3 5.7 315,000 --- 2,870 --- 9 945,000 7,450,000 33.9 8,610 64,700 23.8 1,370 1 6.0 308, 000 --- 2,840 --- 9 308,000 7,750,000 35.2 2,840 67,500 24.8 1,360 2 6.6 302,000 --- 2,810 --- 9 604,000 8,360,000 38.0 5,620 73,200 26.9 1,350 1 6.8 297,000 --- 2,770 --- 9 97,000 8,660,000 39.4 2,770 75,900 27.9 1,340 2 7.4 291,000 --- 2,740 --- 9 582,000 9,240,000 42.0 5,480 81,400 29.9 1,330 3 8.2 285, 000 --- 2,700 --- 1.0 855,000 10,100,000 45.9 8,100 89,500 32.9 1,300 2 8.7 268,000 --- 2,610 --- 1.0 536,000 10,600,000 48.2 5,220 94,700 34.8 1,250 9 11.2 241,000 254,000 2,440 2,520 1.0 2,290,000 12,900,000 58.6 22, 700 117,000 43.0 1,200 6 12.8 216,000 228,000 2,280 2,360 1.0 1,370,000 14,300,000 65.0 14,200 132,000 48.5 1,150 7 14.8 193,000 204,000 2,130 2,200 1.1 1,430,000 15,700,000 71.4 15,400 147,000 54.0 1,100 1 15.0 171,000 182,000 1,980 2,060 1.1 182,000 15,900,000 72.3 2,060 149,000 54.8 1,000 3 15.8 132,000 152,000 1,690 1,840 1.2 456,000 16,400,000 74.6 5,520 155,000 57.0 900 9 18.3 99,700 116,000 1,420 1,560 1.3 1,040,000 17,400,000 79.1 14,000 169,000 62.1 800 17 23.0 72,600 86,200 1,170 1,300 1.5 1,460,000 18,900,000 85.9 22,100 191,000 70.2 700 16 27.3 50, 700 61,600 943 1,060 1.7 986,000 19,800,000 90.0 17,000 208,000 76.5 600 16 31.7 33,500 42,000 732 838 2.0 672,000 20,500,000 93.2 13,400 221,000 81.2 500 29 39.6 20,500 27,000 543 638 2.4 783,000 21,300,000 96.8 18, 500 240,000 88.2 400 25 46.4 11, 300 15,900 376 460 2.9 398,000 21,700,000 98.6 11,500 251,000 92.3 300 10 49.2 5,200 8,250 235 306 3.7 82,500 21,800,000 99.1 3,060 254,000 93.4 200 21 54.9 1,750 3, 480 121 178 --- 73,100 21,800,000 99.1 3,740 258, 000 94.8 119 165 100.0 432 1,090 $1 86 = 180,000 22,000,000 100.0 14,200 272,000 100.0 y8-Sez dad-ov 9TT Table 60.--Sediment transport in the Tanana River at Fairbanks, water year 1981 Sediment-transport rate Ratio of Sediment loads Discharge Sus pended Bedload average Sus pended Bedload equaled qualed Equaled bedload to Cumulative Cumulative or Number Percentage or or average percentage percentage exceeded of of exceeded Average exceeded Average suspended Increment Cumulative of annual Increment Cumulative of annual (m3/s) __ days time (Mg/d) (Ma/d) (Mg/d) (Wa/d) (percent) (Mg) (Mg) load Mg) (Mg) load 1,670 1 0.3 525, 000 --- 3,930 --- 0.8 525, 000 525,000 2.4 3,930 3,930 1.4 1,840 1 3 716,000 --- 6,550 --- 9 716,000 716,000 2.6 6,550 6,550 2.0 1,780 1 5 649, 000 --- 6,090 --- 9 649,000 1,360,000 4.9 6,090 12,600 3.8 1,770 1 8 639,000 --- 6,010 --- 9 639,000 2,000,000 7.2 6,010 18,600 5.6 1,760 I 1.1 628, 000 --- 5,940 --- 9 628,000 2,630,000 9.5 5,940 24, 600 7.4 1,750 1 1.4 618,000 --- 5,860 --- 9 618,000 3,250,000 11.7 5,860 30,400 9.1 1,740 2 1.9 607,000 --- 5,790 --- 9 1,210,000 4,460,000 16.1 11, 600 42,000 12.6 1,720 3 2.7 587,000 --- 5,640 --- 1.0 1,760,000 6,220,000 22.4 16,900 59,000 17.7 1,710 1 3.0 577,000 --- 5,570 --- 1.0 577,000 6,800,000 24.6 5,570 64,500 19.4 1,700 2 3.6 567,000 --- 5,500 --- 1.0 1,130,000 7,930,000 28.6 11,000 75,500 22.7 1,690 2 4.1 557,000 --- 5,430 --- 1.0 1,110,000 9,040,000 32.6 10,900 86, 400 26.0 1,670 1 4.4 538, 000 --- 5,290 --- 1.0 538,000 9,580,000 34.6 5,290 91,700 27.5 1,650 4 5.5 519,000 --- 5,150 --- 1.0 2,080,000 11,700,000 42.4 20,600 112,000 33.6 1,630 2 6.0 501,000 --- 5,020 --- 1.0 1,000,000 12,700,000 46.2 10,000 122,000 36.6 1,600 2 6.6 474,000 --- 4,810 --- 1.0 948,000 13,600,000 49.1 9,620 132,000 39.6 1,570 3 7.4 448, 000 --- 4,620 --- 1.0 1,340,000 14,900,000 53.8 13,900 146,000 43.8 1,540 2 7.9 423,000 --- 4,430 1.0 846,000 15,800,000 57.0 8,860 155,000 46.6 1,500 3 8.8 391, 000 --- 4,180 1.1 1,170,000 17,000,000 61.4 12,500 167,000 50.2 1,400 4 9.9 319,000 --- 3,590 --- 1.1 1,280,000 18,200,000 65.7 14,400 182,000 54.6 1,300 5 11.2 256,000 288,000 3,050 3,320 1.2 1,440,000 19,700,000 71.1 16, 600 198, 000 59.5 1,100 8 13.4 156,000 206,000 2,110 2,580 1.2 1,650,000 21,300,000 76.9 20,600 219,000 65.8 1,000 9 15.8 118,000 137,000 1,710 1,910 1.4 1,230,000 22,600,000 81.6 17,200 236, 000 70.9 900 17 20.5 86,400 102,000 1,360 1,540 1.5 1,730,000 24,300,000 87.7 26,200 262,000 78.7 800 19 25.7 61,000 73,700 1,050 1,200 1.6 1,400,000 25,700,000 92.8 22,800 285, 000 85.6 700 12 29.0 41,000 51,000 782 916 1.8 612,000 26,300,000 95.0 11,000 296,000 88.9 600 14 32.9 26,000 33, 600 557 670 2.0 470,000 26,800,000 96.8 9,380 305, 000 91.6 500 25 39.7 15,200 20,600 373 465 2.3 515,000 27,300,000 98.6 11,600 317,000 95.2 400 18 44.7 7,850 11,500 228 300 2.6 207,000 27,500,000 99.3 5, 400 322, 000 96.7 300 14 48.5 3,350 5,600 121 174 3.1 78,400 27,600,000 99.6 2,440 325,000 97.6 200 26 55.6 1,010 2,180 50 86 --- 56,700 27,600,000 99.6 2,240 327,000 98.2 150 162 100.0 431 720 26 38 --- 117,000 27,700,000 100.0 6, 160 333,000 100.0