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HomeMy WebLinkAboutAK Basin Outlook Report 3-2000USDA United States =e Department of vena Agriculture Natural Resources Conservation Service laska asin Outlook Report ARCH 1, 2000 The Following Organizations Cooperate With the Natural Resources Conservation Service In Snow Survey Work: Federal Department of Agriculture Forest Service Chugach National Forest Institute of Northern Forestry Department of Commerce NOAA, National Weather Service Climate Monitoring and Diagnostics Laboratory Department of Defense U.S. Army Corps of Engineers U.S. Army Cold Regions Research and Engineers Laboratory Department of Interior Bureau of Land Management Geological Survey Alaska Power Administration Fish and Wildlife Service National Park Service State Alaska Department of Fish and Game Alaska Department of Transportation and Public Facilities Alaska Department of Natural Resources Division of Parks Division of Mining and Water Division of Forestry Alaska Energy Authority Alaska Railroad Fairbanks SWCD Homer SWCD Salcha/Big Delta SWCD Upper Susitna SWCD Wasilla SWCD University of Alaska Alaska Experiment Station Geophysical Institute Institute of Water Resources Alaska State Climate Center Reindeer Research Program Long Term Ecological Research Program Municipalities Municipality of Anchorage Municipality of Juneau Private Alaska Electric, Light and Power Alaskan Weather Records Alyeska Resort, Inc. Alyeska Pipeline Service Company Chugach Electric Association Copper Valley Electric Association Homer Electric Association Ketchikan Public Utilities Public Schools Matanuska-Susitna Borough School District Fairbanks North Star Borough School District The Lake and Peninsula School District Canada Department of Indian and Northern Affairs, Yukon Territory Ministry of the Environment, British Columbia The U. S. Department of Agriculture (USDA) prohibits discrimination in its programs on the basis of race, color, national origin, gender, religion, age, disability, political beliefs, sexual orientation and marital or family status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at 202-720-2600 (voice and TDD). To file a complaint, write the Secretary of Agriculture, U.S. Department of Agriculture, Washington, D.C., 20250, or call 1-800-245-6340 (voice) or (202) 720- 1127 (TDD). USDA is an equal employment opportunity employer. TABLE OF CONTENTS March 1, 2000 Hydrologic Basins Map 4 State General Overview BY Streamflow Forecast nie Basin Conditions and Data Upper Yukon Basin ia Central Yukon Basin 9 Tanana Basin He Western Interior Basins 13 Arctic and Kotzebue Basin 5 Norton Sound, Southwest, and Bristol Bay 17 Copper Basin 19 Matanuska - Susitna Basins 21 Northern Cook Inlet 23 Kenai Peninsula Pas) Western Gulf Py Southeast 29 For more water supply and resource management Issued by Released by information, contact: Pearlie S. Reed Chuck Bell Rick McClure Chief State Conservationist Hydrologist Natural Resources Natural Resources Natural Resources Conservation Service Conservation Service Conservation Service Washington, D.C. Anchorage, Alaska 949 E. 36th Ave., Suite 400 Anchorage, Alaska 99508 (907) 271-2424 Official Business Penalty for Private Use $300 U.S. DEPARTMENT OF AGRICULTURE 137200" |- 70°00" HYDROLOGIC BASINS ALASKA =< \ MILES Serer 3 oO 50 100 150 200 250 S LEGEND Basin Boundaries | / KOIZEBUE Kobut, % BASIN $ ¢ Y s ae 2 NORTON SOUND a a pen PER AUKOU Stems,” ~~ gyi ey el yes. Hier of | ae 1StAND SOUTHWES, my ‘ Aupp RY f Ae) cera KUSK' IM ‘enon et Sy ELT. / WUNIVAK BASIN Maina -—? 6 ae = oni i. BAY WESTERN & =e GuLF OF ALASKA ax ee si ou Ge a es Ae AG; . _f ( ( ae oce&A N ie aie JA? nopiax Al er" ‘¢ — Plncl OF ts HA 5. GPOsunae euanh s “4 C BASIN one 3 oP of Oe vray Oe q ‘i Cc ey AU ALEUTIAN oe AL fp} oe CUTAN gus 5 fe 2S _ s3eao" ISLAND 5 is eo vets ome 164200" ph dre Oo 6 Ye = ISLAND SOURCE: U.S.G.S. HYDROLOGIC UNIT MAP, 1987, AND TIGER/UNE “ ’ CENSUS FILES, 1990. INFORMATION FROM SCS FIELD PERSONNEL. MAP PREPARED USING AUTOMATED MAP CONSTRUCTION. LATITUDE AND LONGITUDE GEOGRAPHIC COORDINATE SYSTEM CALCULATED BY THE APPLICATIONS SOFTWARE. XN y NATIONAL CARTOGRAPHY AND GEOGRAPHIC INFORMATION SYSTEMS CENTER, FORT WORTH, TEXAS, 1993. REVISED DECEMBER 1003 1003609 USDA, SCS, NATIONAL CARTOGRAPHY & GIS CENTER, FORT WORTH, TX, 1999, GENERAL OVERVIEW ; Snowpack The Arctic Coast, Northwest Alaska, Susitna Basin, and Northern Kenai Mountains received above normal snow through the month of February. The Tanana Basin, Copper Basin and Southeast Alaska received normal to below normal snow through the month of February. The highest percent of normal snow course is Fog Lakes, east of Stephan Lake in the Upper Susitna Basin. It has set a new record for the 27 years it has been measured and is 267 percent of normal. There are a couple of other snow courses in the northern and eastern Talkeetna Mountains, Square Lake and Horsepasture Pass, that have set snow records for March ios In Southeast, the Petersburg Ridge snow course went up its normal monthly increment while the lower snow course, Petersburg Reservoir, dropped to 79 percent of normal. Precipitation The precipitation for the month reflects the snow conditions with the Arctic, Northwest, Susitna Basin, Kenai Peninsula, and Western Gulf receiving normal to above normal precipitation. The eastern interior as well as Southeast was normal to below normal. Temperature The whole state had above normal temperatures. This ranged from 3 tenths of a degree Fahrenheit above normal at Barrow; 20.7 degrees Fahrenheit above normal average temperature at Bethel; 9.8 degrees Fahrenheit above normal at Fairbanks; Gulkana was 12.5 degrees Fahrenheit above; Talkeetna 10.9 degrees Fahrenheit above; Homer 7.6 degrees Fahrenheit above and Juneau at 3.5 degrees Fahrenheit above. STREAMFLOW: Streamflow forecasts of snowmelt runoff are as follows: < FORECAST POINT Percent of Forecast Average Flow Period YUKON RIVER at Eagle 109 Apr-Jul YUKON RIVER nr Stevens Village 105 Apr-Jul TANANA RIVER at Fairbanks 109 Apr-Jul TANANA RIVER at Nenana 108 Apr-Jul LITTLE CHENA RIVER nr Fairbanks 117 Apr-Jul CHENA RIVER nr Two Rivers 118 Apr-Jul SALCHA nr Salchaket 116 Apr-Jul SAGVANIRKTOK RIVER nr Pump Station 3 78 Apr-Jul KUPARUK RIVER nr Deadhorse 82 Apr-Jul KUSKOKWIM RIVER at Crooked Creek 107 Apr-Jun GULKANA RIVER at Sourdough 97 Apr-Jul LITTLE SUSITNA RIVER nr Palmer Lit Apr-Jul SUSITNA RIVER at Gold Creek 109 Apr-Jul TALKEETNA RIVER nr Talkeetna bad, Apr-Jul WILLOW CREEK nr Willow 113 Apr-Jul CAMPBELL CREEK nr Spenard 118 Apr-Jul SHIP CREEK nr Anchorage 113 Apr-Jul FRITZ CREEK nr Homer 109 Apr-Jul KENAI RIVER at Cooper Landing 108 Apr-Jul GOLD CREEK nr Juneau 89 Apr-Jul See regional summaries for the forecast period and the actual forecasted flow volumes. Basin Outlook Reports and Federal - State - Private Cooperative Snow Surveys For more water supply and resource management information, contact: Rick McClure Data Collection Office Supervisor 949 E. 36th Ave., Suite 400 Anchorage, AK 99508-4362 (907) 271-2424 rmcclure@ak.nrcs.usda.gov How forecasts are made Most of the annual streamflow in the westem United States originates as snowfall that has accumulated in the mountains during the winter and early spring. As the snowpack accumulates, hydrologists estimate the runoff that will occur when it melts. Measurements of snow water equivalent at selected manual snowcourses and automated SNOTEL sites, along with precipitation, antecedent streamflow, and indices of the El Nifio / Southem Oscillation are used in computerized statistical and simulation models to prepare runoff forecasts. These forecasts are coordinated between hydrologists in the Natural Resources Conservation Service and the National Weather Service. Unless otherwise specified, all forecasts are for flows that would occur naturally without any upstream influences. Forecasts of any kind, of course, are not perfect. Streamflow forecast uncertainty arises from three primary sources: (1) uncertain knowledge of future weather conditions, (2) uncertainty in the forecasting procedure, and (3) errors in the data. The forecast, therefore, must be interpreted not as a single value but rather as a range of values with specific probabilities of occurrence. The middle of the range is expressed by the 50% exceedance probability forecast, for which there is a 50% chance that the actual flow will be above, and a 50% chance that the actual flow will be below, this value. To describe the expected range around this 50% value, four other forecasts are provided, two smaller values (90% and 70% exceedance probability) and two larger values (30%, and 10% exceedance probability). For example, there is a 90% chance that the actual flow will be more than the 90% exceedance probability forecast. The others can be interpreted similarly. The wider the spread among these values, the more uncertain the forecast. As the season progresses, forecasts become more accurate, primarily because a greater portion of the future weather conditions become known; this is reflected by a narrowing of the range around the 50% exceedance probability forecast. Users should take this uncertainty into consideration when making operational decisions by selecting forecasts corresponding to the level of risk they are willing to assume about the amount of water to be expected. If users anticipate receiving a lesser supply of water, or if they wish to increase their chances of having an adequate supply of water for their operations, they may want to base their decisions on the 90% or 70% exceedance probability forecasts, or something in between. On the other hand, if users are concerned about receiving too much water (for example, threat of flooding), they may want to base their decisions on the 30% or 10% exceedance probability forecasts, or something in between. Regardless of the forecast value users choose for operations, they should be prepared to deal with either more or less water. (Users should remember that even if the 90% exceedance probability forecast is used, there is still a 10% chance of receiving less than this amount.) By using the exceedance probability information, users can easily determine the chances of receiving more or less water. The United States Department of Agriculture (USDA) prohibits discrimination in its programs on the basis of race, color, national origin, sex, religion, age, disability, political beliefs and marital or familial status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at 202-720-2600 (voice and TDD). To file a complaint, write the Secretary of Agriculture, U.S. Department of Agriculture, Washington, D.C., 20250, or call 1-800-245-6340 (voice) or (202) 720- 1127 (TDD). USDA is an equal employment opportunity employer. 7 Upper Yukon March 1, 2000 Upper Yukon Basin snowpack* Whitehorse temperature (inches) (degrees F) 10 16 National Weather Service Station 1985 rs '; Ue | * Based on @ 12+ | 3 | a 4 selected stations @ 8 ¢ 5 a 1? s i - M a E 47 - 3 , ee XK ni = = = Maximum 2 o4 cad , — io" Average eee ae Oo 44 5 —X—= Minimum = = es 2 since 1975 5 af oO a 16 OCT NOV DEC JAN FEB MAR APR SNOWCOVER: The Yukon Territory watershed snowpack analysis shows all basins in the Yukon River above normal. Basically to the east of the Demster Highway is in the 80 to 90 percent range while west of the Demster Highway varies from 110 percent to 160 percent of normal. The 160 percent of normal is the King Solomon Dome snow course near Dawson. The expected volume flow forecast for the Yukon River at Eagle is 109 percent of normal for the April through July time period. The forecast is 38 million acre-feet. For more information contact your local Natural Resources Conservation Service in Anchorage: (907) 271-2424. UPPER YUKON BASIN SNOWPACK DATA THIS YEAR LAST YEAR 1961-90 AVERAGE SNOW WATER SNOW WATER SNOW WATER SNOW COURSE ELEVATION DATE DEPTH CONTENT DEPTH CONTENT DEPTH CONTEND y < Arrowhead Lake 3680 no report -- -"2 -- --- -- --+ Atlin 2400 2/28/00 13 3.2 18 3.2 22 4.4 Beaver Creek 2150 2/24/00 18 2.5 15 2.4 16 2.7 Burns Lake 3650 2/25/00 31 ied 24 4.9 -- --- Burwash Airstrip 2660 2/25/00 9 2.3 9 L258 8 1.2 Calumet 4300 3/01/00 39 8.6 24 4.0 33 7.0 Casino Creek 3500 2/28/00 30 5.3 20 3.0 24 3.8 Chair Mountain * 3500 2/24/00 15 3.0 no report -- -- --- Duke River 4800 2/28/00 24 6.1 17 2.6 20 4.1 Edwards Lake 2720 2/24/00 30 6.2 20 a7 -- --- Finlayson Airstrip3240 2/25/00 16 2-8 16 res -- - Fuller Lake 3700 2/24/00 31 7.2 22 4.3 -- <a Grizzly Creek 4000 3/01/00 41 8.0 22 3.8 29 5.7 Hoole River 3560 2/25/00 16 2.9 19 Sew 22 4.3 Jordan Lake 3050 2/25/00 a5 2.7 21 <3 -- === King Solomon Dome 3550 2/25/00 36 9.1 21 o-5 28 5.4 Log Cabin (B.C.) 2880 2/25/00 47 15.3 37 8.6 43 iis Mayo Airport 1620 3/01/00 19 4.2 14 1.8 16 3.1 MacIntosh 3800 2/28/00 15 2.3 20 3-5 18 2.8 Meadow Creek 4050 2/27/00 39 9.1 no report -- 36 8.3 Midnight Dome 2800 3/01/00 35 7.4 20 se 26 4.7 Montana Mountain 3340 2/28/00 23 5.2 22 3.8 23 4.7 Morley Lake 2700 2/25/00 a, 3.6 23 4.3 -- --- Mount Nansen 3250 2/28/00 iby) 2.0 17 2.8 14 2.5 Mt. Berdoe 3390 2/28/00 a7, 2.5 18 3.0 20 3.2 Mt. McIntyre B 3700 2/28/00 24 5.7 22 4a. 24 5.0 Pelly Farm 1550 2/27/00 a7 3.1 14 2.1 -- --- Plata Airstrip 2500 2/24/00 cpl 7.6 18 3.1 29 6.1 Rackla Lake 3410 2/24/00 43 9.0 21 3.6 -- --- Russell Lake 3480 2/24/00 35 7.4 24 5.2 -- Satasha Lake 3620 2/28/00 ay 3.0 ay 2.8 -- -<- Tagish 3540 2/28/00 21 4.1 20 Sao) 23 4.5 Twin Creeks 2950 2/24/00 26 5.0 26 6.0 31 6.1 White River 2500 no report -- --- 13 136 -- --- Whitehorse Airport2300 2/29/00 19 3.9 16 2.8 18 3-5 Williams Creek 2800 2/28/00 17 3.0 19 2.9 -- ee Withers Lake 3200 2/24/00 39 9.0 21 4.1 -- --- STREAMFLOW FORECASTS 30 year Forecast Average Most Probable Most Probable Wet Subs* Dry Subs** FORECAST POINT Period (1000AF) _(1000AF) (SAVE. ) (%AVE.) (SAVE. ) Yukon River at Eagle APR-JUL 34870 38000 109 116 102 * Wet Subs - represents subsequent precipitation events of 130% of average through forecast period. ** Dry Subs - represents subsequent precipitation events of 70% of average through forecast period. WATERSHED SNOWPACK ANALYSIS NO. COURSES THIS YEAR AS A PERCENTAGE OF: REGION/RIVER BASIN AVERAGED LAST YEAR AVERAGE Above Witehorse/Tesilin 6 146 116 Dawson 3 231 146 Stewart/Pelly 7 161 102 - White River 4 119 le Central Yukon March 1, 2000 Central Yukon Basin snowpack* Fort Yukon temperature (degrees F} National Weather Service Station (inches) “Based on selected station oa = = = Maximum! or j— = Average a ‘|| —K—- Minimum Water Equivalent (inches) eo since 1964 Departure From Normal (degrees F) OCT NOV DEC JAN FEB MAR APR SNOWCOVER: Both the Seven Mile snow course and Circle City snow courses are at 143 percent of normal. The new snow courses, Lower Beaver and Vunzik Lake snow depths went down four inches but still have a good depth at 31 and 27 inches respectively. The White Mountain snow courses are 288 percent of last year and 144 percent of the nine year average. For more information contact your local Natural Resource Conservation Service office in Fairbanks: (907) 479-3159. 10 SNOWPACK DATA CENTRAL YUKON BASIN THIS YEAR SNOW WATER LAST YEAR SNOW WATER 1961-90 AVERAGE SNOW WATER SNOW COURSE ELEVATION DATE DEPTH CONTENT DEPTH CONTENT DEPTH CONTENT Arctic Village 2050 no report -- oe = --- 20 3.0 Borealis 1330 2/29/00 30 6.4 a5 Se -- --- Boundary 3500 2/26/00 33 ee 19 3.6 23 4.4 Chicken Airstrip 1650 2/26/00 19 4.2 12 an 16 2.6 Circle City 600 3/01/00 29 Ses 16 2.5 24 Seu Circle Hot Springs 860 3/01/00 32 6.5 15 1.9 21 3.6 Eagle Plains 2570 2/24/00 35 7.6 22 3.4 30 6.6 Eagle River 1200 2/25/00 33 6 ou 21 Sed 28 55) Fossil 1400 2/29/00 a 6.8 LS 2.0 -- --- Graphite Lake 600 2/25/00 24 4.6 7 a0) -- --- Hess Creek 1000 2/25/00 32 6.2 18 Ja 24 4.5 Lower Beaver Creek 400 2/25/00 31 7.0 18 237 -- --- Mission Creek 900 no report -- --- 12 1.8 18 3 Mt. Fairplay 3100 2/26/00 20 Byers 20 3.8 18 3.4 Old Crow 840 2/23/00 32 a7 no report 20 3-5 Seven Mile 600 2/23/00 35 6.7 20 3.0 26 4.7 Riff’s Ridge 2130 2/24/00 33 7.0 21 Sted: 24 S20 Stack Pup Creek 1620 3/01/00 31 6.1 15 2.0 22 3.9 Thirty Mile 1350 2/23/00 39 7.6 22 3116 34 75 Vunzik Lake 500 2/25/00 27 5.9 ay 2.6 -- --- Windy Gap 1900 2/29/00 35 8.2 18 3.0 -- --- Wolf 1300 2/29/00 26 6.0 16 2.3 -- --- STREAMFLOW FORECASTS 30 Year Forecast Average Most Probable Most Probable Wet Subs* Dry Subs** Forecast Point Period (1000AF) (1000AF) (SAVE) (SAVE. ) (SAVE. ) YUKON RIVER near Stevens Village APR-JUL 52500 55000 105 110 100 * Wet Subs. - represents subsequent precipitation events of 130% of average through forecast period. **Dry Subs. - represents subsequent precipitation events of 70% of average through forecast period. PRECIPITATION DATA INCHES ACCUMULATED SINCE OCTOBER 1°* PRECIPITATION GAUGE Elevation Date Current Last Year Average Sof Average Atigun Pass** 4800 3/01/00 5.0 3.5 7.8 64 Chandalar Shelf** 3300 3/01/00 5.0 3.3 4.6 108 Fort Yukon 430 3/01/00 5.2 Zip 3 ord 167 Mission Creek 900 No report --- --- Set. --- **Wyoming Gauge WATERSHED SNOWPACK ANALYSIS : NO. COURSES THIS YEAR AS A PERCENTAGE OF: REGION/RIVER BASIN AVERAGED LAST YEAR AVERAGE Forty Mile 3 Li 158 “ White Mountain 4 288 144 Yukon Flats 2 218 143 11 Tanana Basin March 1, 2000 Tanana Valley snowpack * (inches) Fairbanks temperature (degrees F) National Weather Service Station sagen nef eer * Based on selected station: = = = Maximum —e — = Average —K=—= Minimum since 1960 Water Equivalent (inches) Departure From Normal (degrees F) OCT NOV DEC JAN FEB MAR APR SNOWCOVER: All the snow courses, with the exception of two, were above normal water content for the 1* of March. These two snow courses are Fort Greely and Shaw Creek Flats, both near Delta Junction. Many of the snow courses have near the same water content as last month. The Upper Tanana Valley near Tok is 165 percent of normal. The Lower Tanana Valley varies from 110 percent of normal at Lake Minchumina to 155 percent of normal at French Creek with the average 132 percent. For more information contact your local Natural Resource Conservation Service office in Fairbanks: (907) 479-3159 or Delta Junction: (907) 895-4241. pw TANANA BASIN SNOWPACK DATA THIS YEAR LAST YEAR 1961-90 AVERAGE SNOW WATER SNOW WATER SNOW WATER SNOWCOURSE ELEVATION DATE DEPTH CONTENT DEPTH CONTENT DEPTH CONTENT Bonanza Creek 1150 3/01/00 26 5.4 12 2.0 20 4.0 y Caribou Creek 1250 2/24/00 30 6.6 = —— 23 4.1 ‘ Caribou Snow Pillow 900 2/24/00 28 §.8 -- --- 22 39 Cleary Summit 2230 3/01/00 37 9.3 20 2.9 27 5.6 Colorado Creek 700 3/02/00 BL 6.6 14 Zed) 22 3.9 Edgar Creek 2400 2/28/00 34 8.8 12 Qi -- --- Fairbanks Field Off 450 3/02/00 24 4.3 14 2.4 aa 326 Faith Creek 1900 3/02/00 31 6.6 18 2.6 22 4.0 Fielding Lake 3000 2/29/00 42 11.7 26 5.0 41 9.9 Fort Greely 1500 2/28/00 ae 2.1 14 ied 17 229) French Creek 1800 2/28/00 33) S25 14 2.5 25 5.5 Gerstle River 1200 2/29/00 18 Jed ad 18 17 2.9 Gold King 1700 2/28/00 19 3.8 9 2.6 -- --- Granite Creek 1240 no report -- --- 12 Lo9) 17 Sek Haystack Mtn. 1950 no report -- --- -- --- 29 5.6 Jatahmund Lake 2180 no report -- ——— 14 265) -- --- Kantishna 1550 2/26/00 28 5.4 ally) 2.5 -- --- Lake Minchumina 730 2/26/00 25 4.3 15 2.4 20 39) Mentasta Pass 2430 2/29/00 29 7.6 15 2.5 26 5.4 Paradise Hill 2200 3/02/00 14 2.6) 12 2.0 -- --- Ptarmigan Airstrip 2400 2/27/00 . 15 3.7 14 i, -- --- Ptarmigan Creek 2230 3/01/00 34 eS 17 254 an So) Rock Creek Bottom 2250 2/28/00 at 7.0 16 223 -- --- Rock Creek Ridge 2600 2/28/00 32 8.6 a5 2.8 -- --- Shaw Creek Flats 980 2/28/00 12 2.7 10 xs) 16 2.8 Tok Junction 1650 2/29/00 22 Dies 2S 2a 19 Si, Upper Wood River 2400 2/28/00 41 9.0 21 4.2 -- --- STREAMFLOW FORECASTS Forecast Average Most Probable Most Probable Wet Subs* Dry Subs** FORECAST POINT Period (1OQO0AF) (1000AF) (SAVE. ) (%AVE.) (SAVE. ) TANANA RIVER at Fairbanks APR-JUL 7329 8000 109 114 104 LITTLE CHENA RIVER nr Fairbanks APR-JUL 83 97 117 129 105 CHENA RIVER nr Two Rivers APR-JUL 288 340 118 133 103 SALCHA RIVER nr Salchaket APR-JUL 691 800 116 130 102 TANANA RIVER at Nenana APR-JUL 8988 9700 108 114 102 *Wet Subs - represents subsequent precipitation events of 130% of average through forecast period. **Dry Subs. - represents subsequent precipitation events of 70% of average through forecast period. PRECIPITATION DATA INCHES ACUMULATED SINCE OCTOBER 1** PRECIPITATION GAUGE ELEVATION DATE CURRENT LAST YEAR AVERAGE %$OF AVERAGE Fairbanks Field Office 450 3/02/00 4.2 1.8 309) 109 Granite Creek 1240 3/01/00 2.5 2.1 ae a Monument Creek 1850 2/29/00 7.5 2.8 5.9 127 Mt. Ryan 2800 2/29/00 8.0 ek 6.4 125 . Munson Ridge 3100 2/29/00 8.0 31.4 Cee 104 Rhoads Creek 1240 3/01/00 2.3 2.0 Sia 72 WATERSHED SNOWPACK ANALYSIS . NO. COURSES THIS YEAR AS A PERCENTAGE OF: REGION/RIVER BASIN AVERAGED LAST YEAR AVERAGE Chatanika 2 289 166 Chena Basin 3 325 163 Lower Tanana Valley 4 242 132 Mid Tanana Valley(Delta Junction) 4 198 109 Upper Tanana Valley(Tok) 2 212 165 a3) Western Interior Basins March 1, 2000 Koyukuk Basin snowpack * (inches) 12 7 4 5 Ww e x * Based on * 1968 s . 10 pete i et | selected stations Bettles temperature (degrees F) National Weather Service Station ~~. = = = Maximu =| = Average —K— Minimum | | | since 1967 Water Equivalent (inches) Departure From Normal (degrees F) OCT NOV DEC JAN FEB MAR APR SNOWCOVER: Koyukuk The Koyukuk basin received a large amount of snow the end of January through the first of February that more than doubled the water content at Coldfoot, taking it from 3.0 inches to 8.0 inches in a two week time frame. Coldfoot is estimated to be 138 percent of normal with the basin average at 115 percent. Kuskokwim The McGrath snow course is 152 percent of normal. Most of the snow courses are greater than last year, with the exception of Upper Twin Lakes. The Purkeypile Mine snow course is 183 percent of last year and 96 percent of normal. Lower Yukon The snow pack in the Innoko Wildlife Refuge is much greater than last year and is in the 130 percent of normal range. For more information contact your local Natural Resource Conservation Service office in Anchorage: (907) 271-2424. 14 WESTERN INTERIOR BASINS SNOWPACK DATA THIS YEAR LAST YEAR 1961-90 AVERAGE SNOW WATER SNOW WATER SNOW WATER SNOW COURSE ELEVATION DATE DEPTH CONTENT DEPTH CONTENT DEPTH CONTENT KOYUKUK Bettles Field 640 no report -- ca a --- cpl Bonanza Forks 900 2/23/00 31 6.7 19 Sik 28 Coldfoot 1040 3/01/00 36 8.3 24 4.1 30 Disaster Creek 1550 2/24/00 27 4.8 -- --- 22 Kaldoyeit 580 3/01/00 27 5.4 21 3.6 -- Kanuti Chalatna 550 3/01/00 27 oi) 19 Ser -- Kanuti Kilolitna 550 3/01/00 2a 4.0 25 4.5 -- --- Lake Todatonten 550 2/23/00 ai) 6.0 24 4.0 26 Seu Minnkokut 580 3/01/00 36 729 25 4.5 -- --- Nolitna 560 3/01/00 29 6.1 18 2.9 -- --- Table Mountain 2200 2/24/00 25 5.0 19 aa 22 4.2 Taiholman 540 3/01/00 9 3.0 5 0) -- --- KUSKOKWIM Lake Minchumina 730 2/26/00 25 4.3 14 2.4 20 McGrath 340 2/29/00 29 7.0 24 4.2 25 Purkeypile Mine 2030 2/26/00 22 4.4 19 2.4 an Telaquana Lake 1550 3/02/00 20 4.7 -- --- -- Two Lakes 1150 no report -- <== -- --- -- Upper Twin Lakes 2000 3/02/00 20 5.5 34 Wot -- --- LOWER YUKON Grouch Creek 220 2/24/00 42 5.5 27 555) -- --- Holikachuk 100 2/24/00 43 eld 33 ies -- --- Horsefly Creek 180 2/24/00 36 9.0 21 BLS) -- --- Innoko Inn 200 2/28/00 29 6.2 21 3.8 -- --- Menotl Creek 380 2/24/00 46 12.4 33 q6 -- --- Middle Innoko 150 2/24/00 40 10.4 3a Gin, -- --- Tozikaket 600 no report -- ---- 19 2.8 22 So Upper Innoko 180 2/24/00 48 13.2 35 8.0 -- --- Wapoo Hills 220 2/24/00 33 Bradt 27 5135 -- --- Yankee Slough 100 2/24/00 45 12.1 36 8.3 -- --- Yetna River 120 2/24/00 39 10.1 27 S25 -- --- STREAMFLOW FORECASTS 30 YEAR Forecast Average Most Probable Most Probable Wet Subs* Dry Subs** Forecast Point Period (LOOOAF) (1000AF) (SAVE. ) (Ave. ) (%Ave.) Kuskokwim River at Crooked Creek APR-JUN 10743 11500 107 120 94 *Wet Subs. - represents subsequent precipitation events of 130% of average through forecast period. **Dry Subs. - represents subsequent precipitation events of 70% of average through forecast period PRECIPITATION DATA INCHES ACCUMULATED SINCE OCTOBER 157 PRECIPITATION GAUGE ELEVATION DATE CURRENT LAST YEAR AVERAGE SOF AVERAGE Bettles Field 640 no report 4.2 6.2 --- Coldfoot 1040 2/29/00 825 3.2 6.2 137) Gobblers Knob 2030 2/25/00 5.4 4.6 --- --- WATERSHED SNOWPACK ANALYSIS NO. COURSES THIS YEAR AS A PERCENTAGE OF: REGION/RIVER_ BASIN AVERAGED LAST YEAR AVERAGE Koyukuk 6 195 aS Upper Kuskokwim 2 17a! 133 15 Arctic and Kotzebue Sound March 1, 2000 Arctic Coastal snowpack * Barrow temperature (inches) (degrees F) 10 16 National Weather Service Station * Based on % aa als eater liane haan Wyomin: 4 | 1979 | mat Ae 2 a 8p man en nfo me a4 oD | ieee iy o gt Bol yells a) Wo he 7 Bae.” = oO 0 £&, = = = Maximum E = 9 8 s+ . _ Average Zz s —XK=—= Minimum E }a 4 | = 9 - uw o Pee l © 3 3 - @ | since 1976 5 = = 0 Q -12+--— 4 -16 OCT NOV DEC JAN FEB MAR APR SNOWCOVER: Arctic Barrow had an increase of 9 tenths of an inch of precipitation in February, normal is 4 tenths. Prudhoe Bay went up 7 tenths, normal is 5 tenths. The Arctic Coast has had 91 percent of normal precipitation since October 1°. Kotzebue The north side of Kotzebue Sound continues to be dry, as indicated by the Red Dog Mine precipitation gauge. It is currently 53 percent of normal. At some point south of Kotzebue, the Seward Peninsula snowpack increases and becomes greater than normal for March 1“. This is very similar to last year. For more information contact your local Natural Resource Conservation Service office in Anchorage; (907) 271-2424. 16 ARCTIC AND KOTZEBUE SOUND PRECIPITATION DATA INCHES ACCUMULATED SINCE OCTOBER 157 PRECIPITATION GAUGE ELEVATION DATE CURRENT LAST YEAR AVERAGE %OF AVERAGE é ARCTIC Atigun Camp** 3400 3/01/00 2.9 1.9 4.5 64 Atigun Pass** 4800 3/01/00 5.0 3.5 ice 64 Barrow** 25 3/03/00 2.5 Sa 2.6 96 Prudhoe Bay** 30 3/01/00 2.9 Zes 3.4 85 Imnaviat Creek 3050 3/01/00 1.8 1.6 3.4 53 Kotzebue Sound Red Dog** 950 2/28/00 2.7 3.4 Sia 53 **Wyoming shielded gauge STREAMFLOW FORECASTS 30 Year Forecasts Average Most Probable Most Probable Wet Subs* Dry Subs** FORECAST POINT Period (1000AF) _(1000AF) (Ave. ) (%Ave.) (%Ave.) Sagvanirktok River Near Pump Station 3 APR-JUL 652 700 78 84 71 Kuparuk River near Deadhorse APR-JUL 765 650 82 94 70 *wWet Subs. - represents subsequent precipitation events of 130% of average through forecast period. **Dry Subs. - represents subsequent precipitation events of 70% of average through forecast period. WATERSHED SNOWPACK ANALYSIS NO. COURSES THIS YEAR AS A PERCENTAGE OF: REGION/RIVER BASIN AVERAGED LAST YEAR AVERAGE Arctic Coast 2 104 90 Dalton Highway 2 134 60 17 Norton Sound - Southwest Delta and Bristol Bay March 1, 2000 Nome precipitation Nome temperature (percent of normal) (degrees F) 150 12 National Weather Service Station c National 3 Weather He Service abs 5 Station a 1 a in 0 8 fe 5 W% Average 6 5 | : 2 |D% Average 6 © = ee Accumulation| ia | ; © M ) Bs | o © ey 0 . ss s 1 OCT NOV DEC JAN FEB MAR APR OCT NOV DEC JAN FEB MAR APR SNOWCOVER: Norton Sound Most of the Seward Peninsula has an above normal snow depth. With rain on snow prior to the wind blowing, the normally blown free ridge tops/mountain tops have two to three feet of snow. Southwest Delta/Bristol Bay While King Salmon has very little snow on the ground (4 inches), the Dillingham NWS observer shows 50 inches of snow depth at the end of February. The Port Alsworth snow course is 175 percent of last year and normal. For more information contact your local natural Resources Conservation Service office in Anchorage: (907) 217-2424. 18 NORTON SOUND / SOUTHWEST DELTA / BRISTOL BAY SNOWPACK DATA THIS YEAR LAST YEARS 1961-90 AVERAGE , »* SNOW WATER SNOW WATER SNOW WATER fi SNOW COURSE ELEVATION DATE DEPTH CONTENT DEPTH CONTENT DEPTH CONTENT BRISTOL BAY Brooks Camp 150 3/03/00 3 1.0 2 0.5 --- Fishtrap Lake 1800 3/02/00 32 8.8 45 2053 --- Port Alsworth 270 3/03/00 25 6.3 20 3.6 --- --- Three Forks 900 3/03/00 9 3.0 no report --- --- Upper Twin Lakes 2000 3/02/00 20 5.5 34 Wiad --- --- PRECEIPITATION DATA INCHES ACCUMULATED SINCE OCTOBER 157 PRECIPITATION GAUGE ELEVATION DATE CURRENT LAST YEAR AVERAGE %OF AVERAGE Bristol Bay King Salmon* 49 3/01/00 6.5 8.2 6.8 96% *Katmai National Park and Preserve f A | Bethel precipitation Bethel temperature (percent of normal) (degrees F) | 250 | 16 National Weather Service Station mn National 3 | Weather @ 12 | Service e | Statian o 8 is |= | | a 4 5 eat = W% Average 16 |‘5 Zac | 5 E Y % Average Oo -4 jo feos te n + 5 8+ it | 8 -12 | © & | OCT NOV DEC JAN FEB MAR APR OCT NOV DEC JAN FEB MAR APR 19 Copper Basin since 1964 March 1, 2000 Copper Basin snowpack * | Gulkana temperature (inches) (degrees F) : : ae 1s National Weather Service Station 1972 ee * Based on 8 | eo r selected stations oO 104 Hl Ngee Be t ® Ali -” ; o = i; o | 5 = £8 og ues 5 elo : S e = Maximur 2 5 6 p= arm. lm om Averace E€ “ . —X—— Minimum le 7 2 oe S 4 © = 247 5 Q- oO Q OCT NOV DEC JAN FEB MAR APR SNOWCOVER: The northern, western and southern parts of the Copper Basin have snow greater than 130 percent of normal. Most snow courses received normal to below normal increase in snow for the month. Horsepasture Pass, at the headwaters of the Little Nelchina, has a record snow depth for March 1* with 45 inches of snow. The record began in 1968 and the previous record depth was 38 inches in 1980 and 1982. The Copper Center/Kenny Lake area is below normal and east to the Wrangle Mountains is more near or above normal. The Worthington Glacier snow course has 93 inches of snow and is 154 percent of normal water content. For more information contact your local Natural Resource Conservation Service office in Delta Junction: (907) 895-4241 or Anchorage (907) 271-2424. 20 COPPER BASIN SNOWPACK DATA THIS YEAR LAST YEAR 1961-90 AVERAGE SNOW WATER SNOW WATER SNOW WATER SNOW COURSE ELEVATION DATE DEPTH CONTENT DEPTH CONTENT DEPTH CONTENT Chistochina 2170 2/29/00 13 2.7 13 2.2 26 3.8 Dadina Lake 2160 2/26/00 26 5.7 18 3.1 25 4.7 Haggard Creek 2540 2/29/00 23 5.2 18 Siar 25 5.1 Horsepasture Pass 4300 2/25/00 45 10.8 * 23 4.1 26 5.2 Kenny Lake School 1300 3/01/00 8 2.0 11 1.9 16 3.0 Lake Louise 2400 2/29/00 27 5.8 17 2.8 21 3.7 Little Nelchina 2650 2/29/00 34 8.1 19 3.5 -- --- Mentasta Pass 2430 2/29/00 29 7.6 15 2.5 26 5.4 Monsoon Lake 3100 2/28/00 31 7.1 19 3.2 29 5.7 Paxson 2650 2/29/00 31 7.8 20 3.8 30 6.2 Sanford River 2280 2/28/00 19 4.1 21 3.8 27 5.0 St. Anne Lake 1990 2/26/00 46 2.2 16 2.9 23 4.4 Tazlina 1220 3/01/00 12 2.2 14 1.7 -- --- Tolsona Creek 2000 2/29/00 26 5.7 16 2.9 17 3.3 Tsaina River 1650 3/01/00 68 21.4 47 12.4 54 15.3 Twin Lakes 2400 2/28/00 31 ad 23 4.1 31 5.9 Worthington Glacier 2100 3/01/00 93 32.4 61 16.9 61 21.0 STREAMFLOW FORECASTS 30 Year Forecast Average Most probable Most probable Wet Subs* Dry Subs** Forecast Point Period (1000AF) (1 000AF) (SAVE. ) (SAVE.) (SAVE. ) GULKANA RIVER at Sourdough APR-JUL 529 515 97 109 86 *Wet Subs. - represents subsequent precipitation events of 130% of average through forecast period. **Dry Subs. - represents subsequent precipitation events of 130% of average through forecast period. WATERSHED SNOWPACK ANALYSIS NO. COURSES THIS YEAR AS A PERCENTAGE OF: REGION/RIVER BASIN AVERAGED LAST YEAR AVERAGE Alaska Range* 4 236 126 Basin Floor 4 176 122 Chugach Range 5) 221 148 Talkeetna Mountains 3 252 191 Wrangell Mountains 2 142 101 * At the foot of the Alaska Range. 21 Matanuska - Susitna Basins March 1, 2000 f e a f Lower Susitna Basin snowpack | Talkeetna temperature . (degrees F) (inches) 16 National Weather Service Station 24 rc 3 1990 * Based on © 127 7 ri a | 20 -} selected statio! oD fa ‘ ®O gt za or x za | ® , ‘ pa $ er ee Seni 0 4+ & ‘ E = = = = Maximum | 4 5 e A 2 of ®& — i= Average G 12 ee 2 a | —X—— Minimum £ 5 eT w 2 m/ ies poeta igo o 3 NX since 1964 8 f- = fe 0 aL a -12 4 o 9 464 OCT NOV DEC JAN FEB MAR APR SNOWCOVER: The Upper Susitna basin is near 200 percent of normal. The Fog Lakes snow course east of Stephen Lake, has set a record snow depth for March 1* of 46 inches, the previous record was 38 inches which occurred in 1971. The Monohan flat snow course (near the West Fork of the Susitna Glacier), is also a record with 43 inches of snow depth breaking the 1984 record of 41 inches. Both records began in 1964. The west side of the Susitna Basin is in the 140 percent range of normal. Traveling north from Willow, the percent of normal increases: Willow Airstrip is 147 percent, Su Valley High is 182 percent, Denali View is 164 percent, and East Fork Chulitna is 161 percent. For more information contact your local Natural Resource Conservation Service office in Wasilla: (907) 373- 6492. 22 MATANUSKA - SUSITNA BASINS .« SNOWPACK DATA THIS YEAR LAST YEAR 1961-90 AVERAGE SNOW WATER SNOW WATER SNOW WATER e “SNOW COURSE ELEVATION DATE DEPTH CONTENT DEPTH CONTENT DEPTH CONTENT Alexander Lake 160 2/28/00 50 14.0 40 8.0 42 10.2 Archangel Road 2200 3/06/00 62 21.0 19 2.4 42 aioe Blueberry Hill 1200 2/28/00 67 19.9 38 8.2 Eps 14.0 Chelatna Lake 1650 2/26/00 46 12.6 36 8.2 40 9.5 Clearwater Lake 2650 2/26/00 24 5.3 19 Sea 24 ae7 Denali View 700 2/28/00 62 79) 33 6.9 41 10.9 Dutch Hills 3100 2/26/00 93 29.8 54 14.0 ae 23.2 E. Fork Chulitna 1800 2/28/00 63 19/73) 41 9.6 46 12.0 Fishhook Basin 3300 no report -- ---- 39 7.6 56 16.8 Fog Lakes 2120 2/26/00 46 12.0 21 S70 23 4.5 Independence Mine 3550 no report -- ---- 46 10.4 64 20.0 Lake Louise 2400 2/29/00 27 5.8 17 2.8 21 Sey Little Susitna 1700 3/06/00 54 16.1 25 5.2 41 10.6 Monahan Flat 2710 2/25/00 43 abr ey) 27, 5.3 31 6.6 Nugget Bench 2010 2/26/00 Bi) 16.2 40 9.4 52 1354) Ramsdyke Creek 2220 2/26/00 82 25.4 58 1355) 66 19.0 Sheep Mountain 2900 2/29/00 35 825 19 Sis) 25 4.9 Skwentna 160 2/28/00 52 14.7 34 WoC) 42 10.1 Square Lake 2950 2/28/00 32 6.7 18 2.9 20 3.5 Susitna Valley High 500 2/28/00 41 1256 28 5.2 29 6.8 Talkeetna 350 2/28/00 43 11.9 24 4.2 30 7.0 _Tokositna Valley 850 2/26/00 82 24.6 61 13.4 53 2574 Tyone River 2500 2/25/00 27 Sel 18 Shea -- --- Willow Airstrip 200 2/28/00 37 S/eas 27 4.3 28 6.2 STREAMFLOW FOECASTS 30 YEAR FORECAST AVERAGE MOST PROBABLE MOST PROBABLE WET SUBS* DRY SUBS** Forecast Point Period (1000AF) _(1000AF) (SAVE. ) (SAVE. ) (SAVE. ) LITTLE SUSITNA RIVER near Palmer APR-JUL 90 100 aed 118 105 SUSITNA RIVER at Gold Creek APR-JUL 4115 4500 109 116 103 TALKEETNA RIVER near Talkeetna APR-JUL 1629 1800 Lut ceded 104 WILLOW CREEK near Willow APR-JUL 55) “75 13) 120 106 *Wet Subs. - represents subsequent precipitation events of 130% of average through forecast period. **Dry Subs. - represents subsequent precipitation events of 70% of average through forecast period. PRECIPITATION DATA INCHES ACCUMULATED SINCE OCTOBER 157 PRECIPITATION GAUGE ELEVATION DATE CURRENT LAST YEAR AVERAGE SOF AVERAGE Susitna Valley 375 3/01/00 16.52) 6.1 9.8 165 , WATERSHED SNPWPACK ANALYSIS NO. COURSES THIS YEAR AS A PERCENTAGE OF: REGION/RIVER BASIN AVERAGED LAST YEAR AVERAGE Lower Susitna 4 205 148 Matanuska/Lower Little Susitna 3 418 165 Peters Hills 4 191 136 Upper Susitna 4 250 199 23 Northern Cook Inlet March 1, 2000 Ship Creek snowpack * Anchorage temperature (inches) (degrees F) 27 16 National Weather Service Station 1980 j 24 cep Rag * Based on 2+ Z aie selected station | i) ii 7 21 —— ale t = = , — e ++ |= = = Maximum — = Average —XK=——= Minimum 1 -@ + | 8B ° \ } since 1967 Water Equivalent (inches) Departure From Normal (degrees F) 16 OCT NOV DEC JAN FEB MAR APR SNOWCOVER: The volume flow forecast for Campell Creek is 118 percent for the April through July time period. The Kinkaid Park snow course shows 16 inches of depth with 4.3 inches of water content, 108 percent greater than last year. The Mt. Alyeska snow course at 1540 feet elevation is 102 percent of normal for March 1*. Across Cook Inlet to the west below Mt. Spur, the Chuitna Plateau snow course is 141 percent of normal. For more information contact your local Natural Resource Conservation Service office: Wasilla: (907) 373-6492 Anchorage: (907) 272-2424. 24 + SNOW PACK DATA THIS YEAR LAST YEAR 1961-90 AVERAGE SNOW WATER SNOW WATER SNOW WATER SNOW COURSE ELEVATION DATE DEPTH CONTENT DEPTH CONTENT DEPTH CONTENT . Anchorage Hillside 2080 3/02/00 36 9.7 30 Gian, 33 8.4 Arctic Ski Bowl 3000 3/01/00 44 13.2 31 8.7 35 10.7 Arctic Valley #1 500 3/01/00 19 5.0 20 3.9 14 321 Arctic Valley #2 1000 3/01/00 23 6.2 23 4.6 15 3.5 Arctic Valley #3 1450 3/01/00 33 8.3 26 6.2 26 5u9 Arctic Valley #4 2030 3/01/00 33 8.2 24 Sia 26 Ged Chuitna Plateau 1540 2/28/00 88 32.6 64 20.9 62 23.1 Congahbuna Lake 500 2/28/00 45 2 ev oe Uva 33 Se, Granite Point 250 2/28/00 28 7.6 20 4.7 aL Sra) Indian Pass 2350 3/01/00 78 24.9 45 12.8 63 19.6 Kincaid Park 250 2/29/00 16 4.3 20 4.0 -- --- Lone Ridge 1680 2/28/00 96 36.0 72 23.8 84 3128 Mt. Alyeska 1540 2/29/00 107 30.8 95 30.4 95 30.1 Point Mackenzie 200 3/07/00 25 6.7 ay, 3.2 17 4.0 Portage Valley 50 3/01/00 70 28.0 91 27.6 32 10.5 South Campbell Creek 1200 3/02/00 27 7.0 24 4.8 23 See STREAMFLOW FORECASTS 30 YEAR FORECAST AVERAGE MOST PROBABLE MOST PROBABLE WET SUBS* DRY SUBS** FORECAST POINT PERIOD (1000AF) (1000AF) (SAVE. ) (%AVE.) (SAVE. ) CAMPBELL CREEK near Spenard APR-JUL 22 26 118 125 111 SHIP CREEK near Anchorage APR-JUL 64 72 213) a2d 104 *Wet Subs. - represents subsequent precipitation event of 130% of average through forecast period. **Dry Subs - represents subsequent precipitation events of 70% of average through forecast period. NORTHERN COOK INLET PRECIPITATION DATA INCHES ACCUMULATED SINCE OCTOBER 157 PRECIPITATION GAUGE ELEVATION DATE CURRENT LAST YEAR AVERAGE _% OF AVERAGE Indian Pass 2350 3/01/00 30.6 12.1 21.1 145 Mt. Alyeska 1540 2/29/00 44.9 26.8 34.8 129 Point Mackenzie 200 3/01/00 9.6 3.9 6.3 152 WATERSHED SNOWPACK ANALYSIS NO. COURSES REGION/RIVER BASIN AVERAGED LAST YEAR AVERAGE Beluga 3 161 141 Campbell Creek 2 145 124 Ship Creek 3 174 126 Turnagain Arm 3 nee 139 25 THIS YEAR AS A PERCENTAGE OF: Kenai Peninsula March 1, 2000 Northern Kenai Mountains snowpack* * Based on -| selected stations [= Average —X== Minimum since 1970 Water Equivalent (inches) 2 Bb & & 4h att ‘ aan ° SNOWCOVER: Departure From Normal (degrees F) 16 12 Homer temperature (degrees F) National Weather Service Station OCT NOV DEC JAN FEB MAR APR The northern Kenai Mountains vary from Cooper Lake: 121 percent of normal, Moose Pass: 182 percent of normal, to Kenai Summit: 140 percent of normal, to Bertha Creek: 173 percent of normal. On the rim above Homer, the Bridge Creek snow course is 120 percent of normal, Eagle Lake is 138 percent, and McNeil Canyon is 154 percent of normal. Across Kachemak Bay at the Bradley Lake, the snow course water content at Nuka Glacier is 132 percent of normal. The precipitation since October 1* is 91 percent of normal at Nuka Glacier. For more information contact your local Natural Resource Conservation Service office in Homer: (907) 235- 8177. 26 KENAI PENINSULA SNOWPACK DATA THIS YEAR LAST YEAR 1961-90 AVERAGE SNOW WATER SNOW WATER SNOW WATER SNOW COURSE ELEVATION DATE DEPTH CONTENT DEPTH CONTENT DEPTH CONTENT Bertha Creek 950 3/01/00 81 24.0 63 18.6 47 1329) Bridge Creek 1300 3/01/00 44 11.5 48 ZIG 38 9.6 Cooper Lake 1200 3/03/00 55 15.8 56 14.5 47 1352: Demonstration Forest 780 3/01/00 28 7.4 41 Oleg, 24 6.7 Eagle Lake 1400 3/01/00 50 ae 59 13.8 35 9.2 Grandview 1100 3/01/00 110 33.3 no report 70 222 Grouse Creek Divide 700 3/03/00 70 24.8 59 15.5 43 LS, Jean Lake 620 3/03/00 7] 4.0 27 5.6 13 30 Kenai Moose Pens 300 3/01/00 22 5.0 22 4.7 akc] 3.2 Kenai Summit 1390 3/01/00 60 16.8 47 122 44 4220 McNeil Canyon 1320 3/01/00 48 12.6 Si 305 32 8.2 Moose Pass 700 3/01/00 30 10.2 45 TOe1 21 Sis6 Nanwalek 500 2/29/00 55 LieS 48 ESS -- --- Nuka Glacier 1250 3/02/00 106 39.5 69 22.7 77 30.6 Nuka River 1300 no report -- == 72 25.2 titi 30.6 Port Graham 300 2/29/00 64 19.9 53 tS-3 -- ---- Snug Harbor Road 500 3/03/00 20 6.8 28 5.0 17 4.5 Summit Creek 1400 3/01/00 46 a2e7 37 9.2 37 10.0 Turnagain Pass 1880 2/23/00 118 38.2 no report 89 39.2 STREAMFLOW FORECASTS 30 year Forecast Average Most probable Most Probable Wet Subs.* Dry Subs.** FORECAST POINT Period (1O00AF) (1000AF) (SAVE. ) (SAVE. ) (SAVE.) FRITZ CREEK near Homer APR-JUL 4.60 5.0 109 125) 92 KENAI RIVER at Cooper Landing APR-JUL 883 950 108 shaky} 103 *Wet Subs.- represents subsequent precipitation events of 130% of average through forecast period. **Dry Subs. - represents subsequent precipitation events of 70% of average through forecast period. PRECIPITATION DATA INCHES ACCUMULATED SINCE OCTOBER 157 PRECIPITATION GAUGE ELEVATION DATE CURRENT. LAST YEAR AVERAGE %OF AVERAGE Cooper Lake 1200 3/03/00 27.4 19.0 1902 143 Grandview 1100 3/01/00 42.7 Sie SOR 140 Grouse Creek Divide 700 3/03/00 SSL 24.1 28.5 123 Kenai Moose Pens 300 3/01/00 8.1 4.8 6.5) 125 McNeil Canyon 1320 3/01/00 15.2 3.3 13.6 112 Middle Fork Bradley River** 2300 3/02/00 2723 22.2 30.6 89 Nuka Glacier** 1250 3/02/00 43.7 36.2 48.1 91 Summit Creek 1400 3/01/00 176 10.0 Sled) aad) Turnagain Pass 1880 3/01/00 age) 28.5 32.0 Lay, **Wyoming Shielded gauge WATERSHED SNOWPACK ANALYSIS NO. COURSES THIS YEAR AS A PERCENTAGE OF: REGION/RIVER BASIN AVERAGED LAST YEAR AVERAGE. Bradley Lake 1 174 132 Ninilchik Dome 3) 95 136 Northern Kenai Mountains 6 119 145 Northern Kenai Flats es 106 156 27 Western Gulf March 1, 2000 Valdez / Thompson Pass Valdez temperature | snowpack i (degrees F) | (inches) 10 National Weather Service Station cL * Based on & selected stations o D 6+ ~ © a eC! 3 lames moun 5 2 = = = Maximum e 27 & [3 F ea 5 & x sinimurm E 2+ | & &£ 5 2 o since 1958 5 g ] 2 ot 3 a oO am) OCT NOV DEC JAN FEB MAR APR SNOWCOVER: The Worthington Glacier snow course, north of Thompson Pass, is 154 percent of normal water content. Valdez and Lowe River are 142 and 147 percent of normal water content, respectively. The Sugarloaf Mountain precipitation gauge, above the Solomon Gulch Hydroelectric Project is currently 138 percent of normal. It has received 48.8 inches of precipitation since October 1°. For more information contact your local Natural Resource Conservation Service office in Delta Junction: (907)895-4241. 28 WESTERN GULF * SNOWPACK DATA THIS YEAR LAST YEAR 1961-90 AVERAGE SNOW WATER SNOW WATER SNOW WATER SNOW COURSE ELEVATION DATE DEPTH CONTENT DEPTH CONTENT DEPTH CONTENT . Exit Glacier 400 3/06/00 68 23.0 41 9.6 -- ---- Grouse Creek Divide 700 3/03/00 Hn 24.8 59° 15.5 fm 15.7 iver 600 acatlin 21.4 47 13.6 # 50 14.6 Glac 1250 3/02/ 108 $39.5)° 6908 2257877 Daoke.« iver 1300 no rence -- obec 72 Zea 4h 30.6 Sugarloaf Mountain 530 3/01/00 320 -- ---- 250) Tsaina River 1650 3/01/00 2 2 iis 3 Walideg ') bodies 50 3/01/00 4 322 FY “ee Bd Worthington Glacier 2100 3/01/00 2.4 61 16.9 61 ot 7 PRECIPITATION DATA INCHES ACCUMULATED SINCE OCTOBER 157 PRECIPITATION GAUGE ELEVATION DATE CURRENT. LAST YEAR AVERAGE % OF AVERAGE Grouse Creek Divide 700 3/03/00 35.1 24.1 28.5 123 Nuka Glacier** 1250 3/02/00 43.7 36.2 48.1 oa Solomon Gulch 36 2/29/00 41.6 2in7 32.7 127 Sugarloaf Mountain 530 3/01/00 48.8 22.5 S514 138 **Wyoming Shielded Gauge Copper Valley Electric Association WATERSHED SNOWPACK ANALYSIS NO. COURSES THIS YEAR AS A PERCENTAGE OF: REGION/RIVER BASIN AVERAGED LAST YEAR AVERAGE Lowe River Valdez 3 193 148 29 Southeast March 1, 2000 Douglas Island snowpack* Juneau temperature I (inches) ' {de rees F) 40 = 10 Nafional Weather Service Station 1988 * Based on n 35 - | selected station: 3 aie MS vii ons = 0 Ba ig} £ 1991 ee nT ra o E37,” = = = Maximum E> Ss = 5 j— i= Average S S Pe nt Cs —K—< Minimum E€ 2 | ~ On, & ist eran UU sits & eli 2 ei since 1977 5 | = Ua 5 ee hos w o o a 2 | OCT NOV DEC JAN FEB MAR APR SNOWCOVER: The Douglas Island snow courses were measured: Cropely Lake is 55 percent of normal, Eagle Crest is 89 percent of normal and Fish Creek, elevation 500 feet, has no snow where it generally has nearly 2 feet, 23 inches. The Petersburg snow courses are currently 76 percent of last year and 96 percent of normal. The Long Lake SNOTEL site, southeast of Juneau, has a depth of 97 inches and 44.7 inches of water content. This is 122 percent of the average snow water content recorded from the 1968 through 1975 period. For more information contact your Natural Resource Conservation Service office in Anchorage: (907) 271-2424. 30 SOUTHEAST » SNOWPACK DATA THIS YEAR LAST YEAR 1961-90 AVERAGE SNOW WATER SNOW WATER SNOW WATER SNOW COURSE ELEVATION DATE DEPTH CONTENT DEPTH CONTENT DEPTH CONTENT A M Cropley Lake 1650 2/28/00 59 16.4 81 21.5 82 29.9 Eagle Crest 1000 2/28/00 45 1323 72 16.5 43 14.9 Fish Creek 500 2/28/00 0 +0 30 9.3 23 5 7 Moore Creek Bridge 2250 2/27/00 47 T3j50 50 13)34 -- ---- Petersburg Reservoir 550 3/01/00 21 4.9 34 io... 18 6.2 Petersburg Ridge 1650 2/28/00 89 24.3 97 29-2 Ti 24.2 Speel River 280 3/01/00 68 21.2 102 37.2 76 26.7 STREAMFLOW FORECASTS 30 Year Forecast Average Most Probable Most Probable Wet Subs* Dry Subs.** FORECAST POINT Period (1000AF) (1000AF) (SAVE. ) (SAVE. ) (SAVE. ) GOLD CREEK near Juneau APR-JUL SILO) 33 89 94 84 *Wet Subs. - represents subsequent precipitation events of 130% of average through forecast period. **Dry Subs. - represents subsequent precipitation events of 70% of average through forecast period. PRECIPITATION DATA INCHES ACCUMULATED SINCE OCTOBER 1°7 PRECIPITATION GAUGE ELEVATION DATE CURRENT LAST YEAR AVERAGE %OF AVERAGE Snettisham 25 2/29/00 104.4 80.5 95.2 110 Swan Lake 50 2/29/00 LOSio7 90.7 77.8 133 WATERSHED SNOPACK ANALYSIS NO. COURSES THIS YEAR AS A PERCENTAGE OF: REGION/RIVER BASIN AVERAGED LAST YEAR AVERAGE Douglas Island 3 63 59 Petersburg 2 76 96 31 ° U.S. OFFICIAL MAIL kor Rap x i PENALTY FOR PRIVATE USE $300.00 # 0000000367 AK POSTALIA 381312 CONSERVATION OF WATER BEGINS WITH THE SNOW SURVEY VEGELYE |) Alaska Industrial Development and Export Authority 949 E. 36th Avenue, Suite 400 Anchorage, AK 99508-4362 Stanley E. Sieczkowski (78) Manager of Main . a i AIDEA/A ind Operations 480 W. Tudor Road Anchorage, AK 99503 Alaska ie Basin Outlook Report TOK Natural Resources Conservation Service Anchorage, AK