HomeMy WebLinkAboutAPA2558FINAL REPORT
COMPUTERIZED GEOGRAPHIC INFORMATION SYSTEM
UPPER SUSITNA
SUSITNA RIVER BASIN, ALASKA
ESRI
380 New York Street
Redlands, California 92373
CH-137
FINAL REPORT
COMPUTERIZED GEOGRAPHIC INFORMATION SYSTEM
UPPER SUSITNA
SUSITNA RIVER BASIN, ALASKA
Prepared for:
USDA Forest Service .
Prepared by:
Environm~tal Systems Research Institute
380 New York Street
Redlands, California 92373
March 1983
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Table of Contents
Introduction
Study Area Description
Manuscript Map Creation and Automation
Computer Maps and Models
a.Introduction
b.Model Outlines
Appendix A -Data Calssification and Coding
Appendix B -Data Code Descriptions
Appendix C -Grid Multi-variable File
Appendix D -Vegetation Statistics
Appendix E -Grid Map Legends and Statistics
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INTRODUCTION
Environmental Systems Research Institute (ESRI)has developed an
Automated Geographic Information System (GIS)and conducted a systematic
land capability/suitability analysis for the Susitna River Basin in south
central Alaska.This effort was sponsored by a number of agencies,
including the National Aeronautics and Space Administration (NASA~,the
·U.S.Department of Agriculture (USDA)and the Alaska State Department of·
Natural Resources (ADNR).It was carried out under a number of contracts.
The first contract,which provided coverage for the Willow Subbasin,was
described in detail in a final report entitled,Computerized Geographic
Information System:Willow Subbasin,Susitna Basin,Alaska (February 1981).
The next effort,which 'provided coverage for the Talkeetna and Beluga
Subbasin was described in a final report entitled,Computerized Geo&raphic
Information System:Talkeetna and Beluga Subbasins,Susitna River Basin,
Alaska (November 1982).The most recent effort,in which the upland
margins of the Susitna Basin Were mapped and automated,is described in
this report.The .work for the Upper Susitna Subbasin was completed under
~ontract 53-0120-1-oP003 with the USDA Forest Service.
Unlike the two previous reports,this report will not describe in
detail the methods and processes involved in the creation of an automated
GIS but will center mainly on describing the differences between the Upper
Susitna study and the three previous studies.Please refer to either of
the two previous reports for a more in-depth description of the processes
involved.
[CH-137 -1-
STUDY AREA DESCRIPTION
The Susitna River Basin comprises an area of approximatel¥10,000
square miles.The regional map following this section illustrates the
general location and configuration of the Susitna Basin as well as the
major subbasins within it.The Willow Subbasin,comprising an area of
approximately 1,600 square miles,is located in the So~theast.The
Talkee.tna Subbasin,comprising an area of some 3,200 square miles is
located in the center.The Beluga Subbasin,extending over approximately
2,300 square miles,is located in the West.As indicated previously,the
Talkeetna and Beluga Subbasins were each mapped under two ··separate
contracts.The boundaries of these contract areas,as well as the ESRI
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location of the area mapped and automated as part of the effort in Upper
Susitna Basin project number,are illustrated on the accompanying map.The
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Susitna is shown in the Northeast section of the Susitna Basin.It covers
approximately 3,700 square miles and is divided into two separate areas in
this report.The larger area is referred to as "areas A,B,D &E",and the
smaller area is called "area C".
The Upper Susitna Subbasin is contained within 33 map modules at a
scale of 1:63,360 which correspond to the United States Geological Survey
15 minute quadrangle series as shown on the page following the regional
map.A set of basemaps were formatted on translucent mylar and 4 tic marks
were placed on each corner of each base map to ensure accurate and
consistent registration.A tic numbering scheme was developed for the
entire subbasin.The modules were numbered using the previous Susitna
Basin Module Numbering System.
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Following the study area maps on the next pages.the structure of the
base maps,the module numbers,the location and numbering of the tics,and
their geographic coordinates are identified.
CH-137 -3-
\Nillow,Talkeetna ,.Beluga,Susitna Subbasins
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6.
MT
MCKINLEY
DI\C'If\1QIIQITI\I A
Upper Susitna
Upper,Central &Lower Be/~ga
·Upper &Lower Talkeetna
..
Miles
o
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P..roject Numbers
t..2..3 ).s.6 •8
.Corresponding .Susitna Basin
I Willow Subbs.'n
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AREA C
INDEX TO 15'USGS TOPOGRAPHICAL MAPS
UPPER SUSITNA SUBBASIN,SUSITNA BASIN,ALASKA
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ALKEETNA MTNS
NCHORAGE
191817,I
UPPER SUSITNA SUBBASIN -AREAS 'A,B,D &E'
BASEMAPS MODULE NUMBERS AND TICS
I B-5 B-4
I (525)(524)."
20 21 22 23
A-6 A-5 A·~"-4
..
(516)(515)(514)
..
Y 76.?<;?f;?7 HEALY---..
D...;6 D-5
(346)(345)
29 30 31 32 33
C-l C-6 t-5 C-4 C-3
(131)(336)(335)(334)(333)
35 36 37 38 39
B-6 B-5 .B-4 B-3
(326)(325)(324)(323)
-
40 41 42 43 44
A-6 A-5 A-4 A-3
(316)(315)(314)(313)
TNA 45 46 47 48 49 50 51 52 T_.
D-8 D-7 D-6 D-5 A
(048)(047)(046)(045)
28
34
TALKEE
MT.MCKINLE
----
-6-
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UPPER SUSITNA SUBBASIN -'AREAS A,B,D &E'-TICS
[
6,000,000 Subtracted from Northing
TIC LATITUDE,LONGITUDE,NORTHING,EASTING,ZONE SPHEROID
ID D M S D M S METERS METERS NO CODE
[17 63 30 0.000 149 30 0.000 543532.3 375558.0 6 0
18 63 30 0.000 149 0 0.000 542657.4 400439.5 6 0
19 63 30 0.000 148 30 0.000 541977.0 425325.7 6 0[20 63 15 0.000 150 0 0.000 516768.1 349378.1 6 0
21 63 15 0.000 149 30 0.000 515691.7 374471.3 6 0
22 63 15 0.000 149 0 0.000 514811.1 399570.2 6 0
L 23 63 15 0.000 148 30 0.000 514126.2 424673.7 6 0
24 63 0 0.000 150 0 0.000 488935.2 348077.0 6 0
25 63 0 0.000 149 30 0.000 487851.9 373387.1 6 0
[26 63 0 0.000 149 0 '0.000 486965.7 3913702.9 6 0
27 63 0 0.000 .148 30 0.000 486276.4 424023.2 6 0
28 62 45 0.000 150 30 0.000 462391.3 321259.1 6 .0
29 62 45 0.000 .150 0 0.000 461103.0 346778.8 6 0
E 30 62 45 0.000 149 30 0.000 460013.0 372305.3 6 0
31 62 45 0.000 149 0 0.000 459121.1 397837.5 6 0
32 62 45 0.000 148 30 0.000 458427.5 423374.1 6 0r3362450.000 148 0 0.000 457932.1 448914.2 6 0
L 34 62 30 0.000 150 30 0.000 434567.9 319747.9 6 0
35 62 30 0.000 150 0 0.000 433271.6 345483.6 6 0
f~~36 62 30 0.000 149 30 0.000 .432174.8 371226.0 6 a
L:37 62 30 0.000 149 0 0.000 431277-.5 396974.0 6 0
38 62 30 0.000 148 30 0.000 430579.6 422726.6 6 0
.39 62 30 0.000 148 0 0.000 430081.1 448482.5 6 0
~40 62 15 0.000 150 0 0.000 405441.0 344191.3 6 0
41 62 15 0.000 149 30 0.000 404337.5 370149.1 6 0
42 62 15 0.000 149 0 0.000 403434.7 396112.6 .6 0
C 43 62 15 0.000 148 30 0.000 402732.6 422080.5 6 0
44 62 15 0.000 148 0 0.000 402231.1 448051.8 6 0
45 62 0 0.000 150 0 0.000 377611.0 342902.0 6 0
C
46 62 0 0.000 149 37 30.000 376759.6 362531.0 6 o·
47 62 0 0.000 149 30 0.000 376501.0 369074.8 6 0
48 62 0 0.000 149 15 0.000 376021.7 3.82163.3 6 0
49 62'0 0.000 149 0 0.000 375592.9 395253.1 6 0
5 50 62 0 0.000 148 52 30.000 375397.4 401798.5 6 0
51 62 0 0.000 148 30 0.000 374886.5 421435.9 6 0
52 62 0 0.000 148 0 0.000 374382.0 447622.1 6 0
[53 61 45 0.000 150 0 0.000 349781.9 341615.8 6 0
54 61 45 0.000 149 37 30.000 348925.4 361405.6 6 0
55 61 45 0.000 149 15 0.000 348183.2 381198.7 6 0
56 61 45 0.000 148 52 30.000 347555.2 400994.6 6 0[57 61 45 0.000 148 30 0.000 347041.4 420792.9 6 0
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TALKEETNA MTNS.--.-
UPPER SUSITNA SUBBASIN -AREA 'c'
BASEMAPS MODULE NUMBERS AND TICS
1 2 3 4
C-1 C-6
C-5
(331)(436)(435)
5 6 7 8
..
B-6 B-5B-1
.'.',
(321)(426)(425)
~,10 11 12
A-I A-6 A-5.
(311)(416)(415)
13 14 15 16
-8-
GULKANA
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~UiliUSCRIPT }~-CREATION AND AUTOMATION
Manually drafted mylar.sheets,termed manuscript maps,were drawn for
each of the 33 map modules.Only one manuscript was created for the Upper
Susitna Subbasin.The data types encompassed by it are outlined below.
SUSITNA RIVER/BASIN
ALASKA
DATA STRUCTURE AND CLASSIFICATION
~Uu~SCRIPT #1 -INTEGRATED TERRAIN UNIT MAP
SLOPE (7 Classes)
LANDFORM
Physiographic Division (8 Classes)
Landform Type (74 Classes)
GENERAL GEOLOGY
Surficial Geology (4 Classes)
Bedrock Geology (28 Classes)
Vegetation (41 Classes)
It should be noted that some Integrated Terrain Unit variables mapped
for the Willow,Talkeetna and Beluga subbasins were not mapped for the
Upper Susitna subbasin.Soils and Land Use are the most conspicuous of
these omissions.Also,it should be noted that the minimum resolution o£
the mapped data was 80 acres rather than 2 to 5 acres for the other
subbasins.In this report,.Appendix A contains the Data Classification
Code Structure,and Appendix B contains the Data code descriptions.
The Integrated Terrain Unit manuscript,manually drafted at the scale
of 1:63,360,was created through a process which involved spatial
integration as well as composition
The mapped data were automated by a process of x,y coordinate
f"digitizing.The initial data entry was accomplished through (PlOS)
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programs and routines,as was the editing process.The final x,y
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CH-137 -9-
coordinate fiies were supplied in the PIOS format.Two grid multivariable
files (MVFs)were also created and delivered,one for areas 'A,B.,D &E',
and one for area 'C'.In this report,Appendix C describes the structure
and contents of the (~WFs).
Under the contract for the Upper Susitna area,special computer
processing of the ITUM files for all of the subbasins was effected.All of
the x,y coordin.ate data files for the Susitna Basin had been created using
ESRI PIOS software.The lTUM files for Willow,Talkeetna,and Beluga as.
well as those for Upper Susitna were converted to an ARC format and were
used to do special mapping and analysis for each of the quadrangles in the
study area.In instances where two files created under different contracts
for the Willow,Talkeetna and Beuga Subbasins provided full coverage for a
_given quadrangle,the files were joined with true coordinate edge-match
being effected between them.Given differences in spatial resolution
between the data mapped for Upper Susitna and the other Subbasins,the
files for quadrangles covered by the Upper Susitna and one or more other
study areas were not merged.The resulting ARC files were used to provide
maps and statisti~s by quadrangle for each of the vegetation units in the
Basin.Appendix D illustrates the statistics developed for the Upper
Susitna Subbasin.The procedures for creating these and their associated
maps are outlined below:
-Convert PIOS ITUM polygon file to ARC.
-Clean File.
-Merge and Clean Adjacent File (Only for Willow,Talkeetna and Beluga
on quadrangles covering parts of more than one subbasin).
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-Add Vegetation Codes to Associated Polygons.
-Dissolve Unnecessary Lines.
-Produce Computer Plot of Vegetation ~olygon Units.
-Produce Statistics Report.
CH-137 -11-
COMPUTER MAPS AND MODELS
The computerized data files,composed of polygons,were used to create
plotter drawn ~aps of each module as well as to create two types of
parallel data files.One in the ARC/INFO format and two in a grid format.
The grid (MVFs)were used to create line printer maps.The following
computer maps illustrate some of the basic information coded into the GIS
produced for the Upper Susitna Subbasin~One set of grid maps were created
for Areas 'A,B,D &E',and'one set of grid maps were created for area
COMPUTER MAPS
BASIC AND INTERPRETED ENVIRONMENTAL CONDITIONS
Pen Plotter Maps (PIOS)
Dropline of Vegetation (By Quad)
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Pen Plotter Maps (Arc)
Vegetation Polygons and Areal Statistics (By Quad)
Map II
1
2
3
Line Printer Maps (Grid by Sub-Study Area)
Slope
Range Suitability
Forest Suitability
The grid (MVFs)were also used to evaluate and assess environmental
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conditions in relation to certain potential uses.The overall format of
these models generally follows those developed as part of the Willow,
Talkeetna and Beluga efforts,wherein ESRI stafff worked with
representatives from select State and Federal agencies in structuring the
overall flow of the analyses.From these models,the following computer
maps were produced.
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previous Susitna Basin reports are on the following pages.
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Hap It
4
5
6
7
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COMPUTER MAPS
MODELED ENVIRONMENTAL CONDITIONS
Line Printer,Haps (GRID by Study Area)
Erosion Hazard
Dense Urban Potential
Low Density Urban Potential
General Habitat
Hoose Habitat
Road Suitability
Outlines of these models,using the same format described in the
Appendix E,the legends and statistics section,lists the output of
the grid models in acres and percentage of the total area for each category
r~of each model for each subarea.Two models,the Dense Urban Potential
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Model and the Low Density Urban Potential Model yielded identical results.
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Therefore,only one legend and statistics sheet (titled,CAPABILITY FOR
URBAN DEVELOPMENT),displays the output from both models for each sub-area.
[CH-137 -13-
CH-137
UPPER SUSITNA
HODEL OUTLINES
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HAP 1
HODEL OUTLINE
UPPER SUSITNA
GENERAL SLOPE
Consideration
Slope Gradient
CH-137
Specific Data Class
0-3%Slope
3-7%Slope
7-12%Slope
12-20%Slope
20-30%Slope
30-45%Slope
>45%Slope
-15-.
Value
(Incidence)
1
2
3
4
5
6
7
Value
(Proximity)
HAP 2
MODEL OUTLINE
UPPER SUSITNA
RANGE SUITABILITY
Consideration
Primary Vegetation
Specific Data Class
Closed Forest
Coniferous Forest,White
Spruce,Short Stands
Deciduous Forest,Mixed
Forest,Young Stands
Deciduous Forest,Mixed
Forest,Medium-Aged
Stands
Coniferous Forest,White
Spruce,Tall Stands
Deciduous Forest,Mixed
Forest,Old Stands
Cottonwood,Young Stands
Cottonwood,Medium-Aged
Stands
Cottonwood,Old Stands
Open Forest-Woodland
Coniferous Forest,White
Spruce,Short Stands
Deciduous Forest,Mixed
Forest,Medium-Aged
Stands
Coniferous Forest,White
Spruce,Tall Stands
Deciduous Forest,Mixed
Forest,Old Stands
-Cottonwood,Medium-Aged
Stap.ds
Cottonwood,Old Stands
Value"
(Incidence)
7
7
7
7
7
7
6
6
6
6
6
6
Value
(Proximity)
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Closed Forest (Black Spruce
Mountain Hemlock)
Black Spruce,Short Strands
Black Spruce,Tall Stands
Mountain Hemlock,ShJrt
Stands
Mountain Hemlock,Tall
Stands
Open Forest-Woodland
(Black Spruce)
Black Spruce,Short Stands
-16-
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7
7
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Consideration
Primary Vegetation
Cont'd
Specific Data Class
Salt Water Wetlands
Salt Grassland
Low Shrub
Tidal Marsh
Tall Shrubs
Alder
Alder-Willow
Low Shrub
Willow Resin Birch
Grassland
Upland Grass
Tundra
Sedge-Grass
Herbaceous
Shrub
Mat and Cushion
Fresh Water Wetlands
Sphagnum-Bog
Sagnum-Srub Bog
Cultural Features
Cultural Influences
Barren
Mud Flats
Rock
Permanent Snow and Ice
Snowfield
Glacier
Water
Lakes >40 acres
Lakes >10 10 acres <40
acres
Streams >165 Ft Wide
<600 Feet
Rivers >1/8 Mile Wide
-17-
Value
(Incidence)
4
:4
4
3
3
3
1
2
2
3
2
5
5
8
8
8
8
8
8
8
8
8-
Value
(Proximity)
MODEL Su}~~TION RULES
Rank Category
1 Grassland
2 Tundra
3 Shrub
4 Salt Water Wetlands
5 Fresh Water Setlands
6 Open Forests
7 Closed Forests
8 Non-Vegetated
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}ll\P 3
HODEl.OUTLINE
UPPER SUSITNA
FOREST SUITABILITY .
Consideration
Primary Vegetation
Specific Data Class
Closed Forest
Coniferous Forest,White
Spruce,Short Stands
Deciduous Forest,Mixed
Forest,Young Stands
Deciduous Forest,Mixed
Forest,Medium-Aged
Stands
Coniferous Forest,White
Spruce,Tall Stands
Deciduous Forest,Mixed
Forest,Old Stands
Cottonwood,Young Stands
Cottonwood,Medium-Aged
Stands
Cottonwood,Old Stands
Open Forest-Woodland .
Coniferous Forest,White
Spruce,Short Sta~ds
Deciduous Forest,Mixed
Forest,Medium-Aged
Stands
Coniferous Forest,White
Spruce,Tall Stands
Deciduous Forest,Mixed
Forest,Old Stands
Cottonwood,Medium-Aged
Stands
Cottonwood,Old Stands
Closed Forest (Black Spruce
Mountain Hemlock)
Black Spruce,Short Strands
Black Spruce,Tall Stands
Mountain Hemlock,Short
Stands
Mountain Hemlock,Tall
Stands
Open Forest-Woodland
(Black Spruce)
Black Spruce,Short Stands
Value
(Incidence)
1
5
5
1
5
7
7
7
3
3
1
1
4
Value
(Proximity)
[-19-
Consideration
Primary Vegetation
Cont'd
Specific Data Class
Salt Water Wetlands
Salt Grassland
Low Shrub
Tidal Marsh
Tall Shrubs
Alder
Alder-Willow
Low Shrub
Willow Resin Birch
Grassland
Upland Grass
Tundra
Sedge-Grass
Herbaceous
Shrub
Mat and Cushion
Fresh Water Wetlands
Sphagnum-Bog
Sagnum....Srub llog
Cultural Features
Cultural Influences
Barren
Mud Flats
Rock
Permanent Snow and Ice
Snowfield
Clacier
Water
Lakes >40 acres
Lakes >10 10 acres <40
acres
Streams >165 Ft Wide<600 Feet
Rivers >1/8 Mile Wide
-20-
Value
(Incidence)
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
Value
(Proximity)
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MODEL SUMMATION RULES
Rank Category
1 Closed White Spruce,
2 Open White Spruce
3 Closed Black Spruce
4 Open Black Spruce
5 Closed Mixed Forest
6 Open Mixed Forext
7 Closed Cottonwood
8 Open Cottonwood
9 Non-Forest
Hemlock
-21-
}oIAP 4
NODEL OUTLINE
UPPER SUSITNA
EROSION HAZARD
Consideration Specific Data Class
Soil Characteristics K Fac~or
Slope Gradient 0-3%Slope Gradient
3-7%
7-12%
12-20%
20-30%
30-45%
>45%
NODEL SID1MATION RULES
Value
(Incidence)
0.4
0.245
0.746
1.78
3.60
6.34
10.71
17.58
Value
(Proximity)
K Factor values are multiplied to value for average slope gradient to
determine computed soil loss in tons per acre-year.Since the soils in
the study area are predoiminantly silt,a K value of 0.4 was used.
Va;lue
0-3
4-7
8-15
16-25
26-40
41-129
Ranking
1
2
3
4
5
6
7
Category.
Water
0-3 Tons/Acre-Year =Low
4-7 Tons/Acre-Year =Low/Noderate
8-15 Tons/Acre-Year =Moderate
16-25 Tons/Acre-Year =Moderate/High
26-40 Tons/Acre-Year =High
GT 40 Tons/Acre-Year =Very High
-22-
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MAP 5
HODEL OUTLINE
UPPER SUSITNA
DENSE URBk~POTENTIAL
Consideration Specific Data Class Value
(Incidence)
Value
(Proximity)
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Landform Type Glacial
Moraine
End Moraine
Lateral Moraine
Medial Moraine
Moranial Ridge
Rogen.Morain~
Ground Moraine
Till
Till~Undifferentiated
Drumlin
Druml.in·~Drumloid
Rock Drumlin,Drumloid
Fluvioglacial
Outwash
Abandoned Outwash .Channel
Remnant Subglacial Stream
Valley
Kame Complex
Esker
Crevasse Filling
Side Glacial Drainage
Channel
Flute
Aeolian
Dune
Dune and·Outwash
Complex
Littoral
Longshore Bar
Longshore Bar Within
Abandoned Coastline
(Not Surveyed Flood
Zone).
Longshore Bar.Within
Abandoned Coastline
(Surveyed Flood Zone)
Beach
Barrier Spit
Delta
Delta-Floodplain Within
Abandoned Coastline
(Not Survyed Flood Zone)
-23-
M
M
M
M
M
M
H
M
M
M
M
L
H
H
L
L
L
U
u
u
L
L
u
L
u
u
U
L
L
·Value
(Incidence)
Consideration
Landform Type
Cont'd
Specific Data Class
Delta-Floodplain Within
Abandoned Coastline
(Survyed Flood Zone)
Delta-Floodplain (Not
Surveyed Flood Zone)
Delta-Floodplain
(Surveyed Flood Zone)
Delta and Outwash Complex
Tidal Flat
Coastal Plain
Fluvial
Active Channel
River Bar
Floodplain
Active (No.t Surveyed
Flood Zone)
Active (Surveyed Flood Zone)
Abandoned (Not Surveyed
Flood Zone)
Abandoned (Surveyed Flood
Zone)
Alluvial Plain
Alluvial Fan/Cone
Lacustrine Deposit-Mass Wasting--....-
Colluvium
Talus
Landslide Deposit
Rock Glacier
Mine Tailings
Tectonic Uplife
Upland Valley
Mountain Sideslope
Mountain"Ridgetop
Waterbody
Ice and Snow
u
u
U
L
U
M
u
u
u
u
u
M
u:
H
H
il
M
U
L
U
U
H
H
L·
U
U
Value
(Proximity)
[
[
[
['
L
rL..J
[
L
[
[
l
Coniferous-Hemlock-
Coniferous-Hemlock-Tall
Deciduous/Mixed-Young
Deciduous/Mixed-Medium Age
Vegetation Cover Closed Forest
Coniferous-White
Short
Coniferous-White
Tall
Coniferous-Black
Short
Coniferous-Black
Tall
Spruc"e-
I
Spruce-
Spruce-
Spruce-
M
H
L
H
M
H
H
\-
L
L
-24-L
MODEL SUMMATION RULES
High Capability =All H
Moderate Capability 1 or more M not L or U
Low Capability =1 or more L not U
Unsuited 1 or mor·e U
[
[
[
[
[
[
r
L
[
C
E
[
[
r
L
r'L
[
Consideration
Vegetation Cover
Cont'd
Slope Gradient
Specific Data Class
Deciduous/Mixed-Old
Cottonwood-Young
Cottonwood-Medium Age
Cottonwood-Old
Open Forest
Coniferous-White Spruce-
Short
Coniferous-White Spruce-
Tall
Coniferous-Black Spruce-
Short
Deciduous/Mixed-MediUm Age
Deciduous/Mixed-Old
Cottonwood-Medium Age
Cottonwood-Old
Non-Forest
Salt Water Wetland
Tall Shrubs
Low Shrubs
Grassland
Tundra
Fresh Water Wetland
Cultural Features
Cultural Influences
Barren
Permanent Snow and Ice
\.;Tater
Average Slope Gradient
0-3%
3-7%
7-12%
12-20%
20-30%
30-45%
>45%
-25-
Value
(Incidence)
M
H
H
M
M
H
L
H
M
H
M
U
L
L
M
L
U
11
U
U
U
H
H
H
M
L
L
U
Value
(Proximity)
MAP 6
MODEL OUTLINE
UPPER SUSITi~A
LOW DE~SITY URBAN POTENTIAL
[
[
Consideration Specific Data Class Value
(Incidence)
Value
(Proximity)['
Landform Type Glacial
Moraine
End Moraine
Lateral Moraine
Medial Moraine
Moranial Ridge
Ragen Moraine
Ground Moraine
Till
Till,Undifferentiated
Drumlin
Drumlin,Drumloid
Rock Drumlin,Drumloid
Fluvioglacial
Outwash
Abandoned Outwash Channel
Remnant Subglacial Stream
Valley
Kame Complex
Esker
Crevasse Filling
Side Glacial Drainage
Channel
Flute
Aeolian
Dune
Dune and Outwash
Complex
Lit'toral
Longshore Bar
Longshore Bar Within
Abandoned Coastline
(Not Surveyed Flood
Zone)
Longshore Bar Within
Abandoned Coastline
(Surveyed Flood Zone)
Beach
Barrier Spit
Delta
Delta-Floodplain Within
Abandoned Coastline
(Not 'Survyed Flood Zone)
-'-26-
M
M
M
M
M
M
H
M
M
M
M
L
H
H
L
L
L
U
U
U
L
L
U
L
U
U
U
L
L
['
[
[
L
[
[
[
C
L
[
L
Specific Data Class -Value
(Incidence)
Delta-Floodplain Within
Abandoned Coastline
(Survyed Flood Zone)U
Delta-Floodplain (Not
Surveyed Flood Zone)U
Delta-Floodplain
(Surveyed Flood Zone)U
Delta and Outwash Complex L
Tidal Flat U
Coastal Plain M_
•
Value
(Proximity)
L
H
1-1
L
U
U
M-
·L
M
M
M
H
H
M
U
L
U
U
U
H
H
R
M
U
U
U
U
U
-27-
Closed Forest
Coniferous-Whi te Spruc'e-
Short f
Coniferous-White Spruce-
Tall
Coniferous-Black Spruce-
Short
Coniferous-Black Spruce-
Tall.
Coniferous-Bemlock-Short
Coniferous~Hemlock-Tall
Deciduous/Mixed-Young
Deciduous/Mixed-Medium Age
Fluvial
Active Channel
River Bar
Floodplain
Active (Not Surveyed
Flood Zone)
Active (Surveyed Flood Zone)
Abandoned (Not Surveyed
-Flood Zone)
Abandoned (Surveyed Flood
Zone)
Alluvial Plain
Alluvial Fan/Cone
Lacustrine Deposit
l-1ass Wasting-------
Colluvium
Talus
Landslide Deposit
Rock Glacier
Mine Tailings
Tectonic Uplift
Upland Valley
Mountain Sideslope
Hountain-'Ridgetop -
Waterbody
Ice and Snow
Vegetation Cover
Consideration
Landform Type
Cont'd
('
L
[
I'
L
r
L
[
l
C
L
C
C
[
Consideration
Vegetation Cover
Cont'd
Slope Gradient
HODEL SUMMATION RULES
High Capability
Moderate Capabil;ty
LO\y Capability
Unsuited
Specific Data Class
Deciduous/~xed-Old
Cottonwood-Young
Cottonwood-Medium Age
Cottonwood-Old
Open Forest
Coniferous-White Spruce-
Short
Coniferous-White Spruce-
Tall
Coniferous-Black Spruce-
Short:
Deciduous/Mixed-Medium Age
Deciduous/Mixed-old
Cottonwood-Medium Age
Cottonwood-old
Non-Forest
Salt Water Wetland
Tall Shrubs
Low Shrubs
Grassland
Tundra
Fresh Water Wetland
Cultural Features
Cultural Influences
Barren
Permanent Snow and Ice
Water
Average Slope Gradient
0-3%
3-7%
7-12%
12-20%
20-30%
30-45%
>45%
=All H
=1 or more M not L or U
=1 or more L not U
=1 or more U
-28-
Value
(Incidence)
M
~
M
M
M
H
L
H
M
M
M
U
L
L
L
L
U
M
:U-
U
U
H
H
H
M
L
L
U
Value
(Proximity)
[
L
[
[
[
L
l-~
-~
[
[
I
L
L
[
L
[
[
[
[
r'L,
r
L
[
[
[
C
.MAP 7
MODEL OUTLINE
UPPER SUSITNA
GENERAL HABITAT
Consideration
Primary Vegetation
Specific data Class
Closed Forest
Coniferous Forest,White
Spruce,Short Stands
Deciduous Forest,Mixed
Forest,Young Stands
Deciduous Forest,Mixed
.Forest,Medium-Aged
Stands
Coniferous Forest,White
Spruce,Tall Stands
Deciduous Forest,Mixed
Forest,Old Stands
Cottonwood,Young Stands
Cottonwood,Medium-Aged
Stands
Cottonwood,Old Stands
Open Forest-Woodland
Coniferous Forest,White
Spruce,Short Stands
Deciduous Forest,Mixed
Forest,Medium-Aged
Stands
Coniferous Forest,White
Spruce,Tall Stands
Deciduous Forest,Mixed
Forest,Old Stands
Cottonwood,Medium-Aged
Stands
Cottonwood,Old Stands
Value
(Incidence)
8
10·
5
8
5
10
10
10
2
1
2
1
4
4
Value
(proximity)
[
I'
L
[
Closed Forest (Black Spruce
Mountain Hemlock)
Black Spruce,Short Strands
Black Spruce,Tall Stands
Mountain Hemlock,Tall
Stands
Open Forest-Woodland
(Black Spruce)
Black Spruce,Short Stands
-29-
8
8
8
11
MODEL SUMMATION RULES
MAPA
Ranking Category
1 =Mixed Forest -Open
2 =Conifer Forest -Open
3 =Tall Shrub Alder-Willow
4 7 Deciduous Forest -Open
5 =Mixed Forest -Closed
6 =Low Shrubs -Willow Resin Birch
-30-
[
[
r~~
[
[
L
[
[
[
L
[
C
C
L
b
L
[
r"u
L
7 =Salt Water Wetland,Grassland,and Tidal Flats
8 =Conifer Forest -Closed
9 =Low Shrub Salt Water Wetland
10 =Deciduous Forest -Closed
11 =Short Black Spruce -Open
12 =Sphagnum Bog
13 =Tall Shrub Alder
14 =Grassland
15 =Tundra -Special Consideration
16 =Low Diversity/Capability
17 =Lakes and Streams
[
[
['
[
[
[
L
f~
<-
r
L
[
E
[
C
C
[
[
rL
[
MAPB
Aggregated
Ranking
1
2
3
4
5
Original
Ranking
17
15
16
8-14
1-7
Category
Lakes and Streams
Tundra Special Consideration
Low Diversity/Capability
Moderate Diversity/Capability
High Diversity/Capability
-31-
Value
(Incidence)
HAP 8
MODEL OUTLINE
UPPER SUSITNA
HOOSE F.ABITAT
Consideration
Primary Vegetation
Specific data C~ass
.Closed Forest
Coniferous Forest,White
Spruce,Shor~Stands
Deciduous Forest,Mixed
Forest,Young Stands
Deciduous Fore~t,Mixed.
"Forest,Medium-Aged·
Stands .
Coniferous Forest,White
Spruce,Tall Stands
Deciduous Forest,Mixed
Forest,Old Stands·
Cottonwood,Young Stands
Cottonwood,Medium-Aged
Stands
Cottonwood,Old Stands
Open Forest-Woodland
Coniferous Forest,White
Spruce,Short Stands
Deciduous Forest,Mixed
Forest,Medium-Aged
Stands
Coniferous.Forest,White
Spruce,Tall Stands
Deciduous Forest,Mixed
Forest,Old Stands
Cottonwood,Medium-Aged
Stands
Cottonwood,Old Stands
Closed Forest (Black Spruce
Mountain Hemlock)
Black Spruce,Short Strands
Black Spruce,Tall Stands
Mountain Hemlock,Tall
Stands
Open Forest-Woodland
(Black Spruce)
Black Spruce,Short Stands
-32-
1
1
1
1
1
1
1
1
1
1
1
1
3
1
1
1
1
3
Value
(Proximity)
[
[
[
[
L
[
[
C
c-
..
c
[
[
L
[
[
[
[
[
[
[
[
r
L
c
c
Consideration
Primary
Vegetation
Cont'd.
Specific Data Class Value Value
(Incidence)(Proximity)
Salt Water Wetlands
Salt Grassland 4
Low Shrub 4
Tidal Marsh 4
Tall Shrubs
Alder 1
Alder-Willow 1
Low Shrub
Willow Resin Birch 2
Grassland
Upland .Grass 2
Tundra
Sedge-Grass 3
Herbaceous 2
Shrub 2
Mat and Cushion 3
Fresh Water Wetlands
Sphagnum-Bog 4
Sagnum-Srub Bog,2
Cultural Features
Cultural Influences 4
Barren
Mud Flats 4
Rock 4
Permanent Snow and Ice
Snowfield 4.
Glacier 4
Water 5
[
l
('
L
MODEL SUMMATION RULES
Value 1 =Level 1 MOD/HIGH Winter Range,
LOW/HIGH S,S,F Range
Value 2 =Level 2 No Winter Range
MOD/HIGH S,S,F Range
Value 3 Level 3 NO/LOW Winter Range
LOW/MOD S,S,F Range
Value 4 =Level 4 Vegetated types not generally
used by moose
Value 5 =Level 5 Water bodies
-33-
HAP 9
MODEL OUTLINE
UPPER~.l!SITNA .
ROAD SUITABILI~
Consideration
Landform Type
(Rating I to 10~
I is best)
Specific Data Class
Glacial
Moraine
Till
Drumlin
Drumlin/Drumloid
Rock Drumlin
Fluvioglacial
Outwash
Abandoned Outwash Channel
Remnant Subglacial
Stream Valley
Kame Complex
Esker
Crevasse Filling.
Side Glacial Drainage
Channel
Flute
Aeolian
Dune
Dune and Outwash Complex
Littoral
Longshore Bar
Beach
Barrier Spit
Delta
Tidal Flat
Coastal Plain
Fluvial
Active Channel
River Bar
Floodplain
Active
Abandoned
Alluvial Plain
Alluvial Fan/Cone
Lacustrine Deposit
Mass Hasting
Colluvium
Talus
Landslide Deposit
Rock Glacier
-34-
Value
(Incidence)
I
I
I
7
3
3
4
2
I
1
3
3
73 .
8
8
8
9
9
9
8
10
10
4
3
2
9
10
10
10
10
Value
(Proximity)
[
[
r
[
r~
[
[
E
[
L
l
L
[
L
L
[
[
l
[
[
[
[
r~
L
[
5
C
[
[
[
[
r~
L
r
L
[
Consideration
Landform Type
Cont'd
Slope
Vegetation Cover
(Rating is 1 to 150,
1 is best)
Specific Data Class Value
(Incidence)
Mine Tailings 10
Tectonic Uplift
Upland Valley 4
Mountain Sideslope 10
Mountain Ridgetop 10
Waterbody 10
Ice and Snow 10
Slope Gradient
0-3%1
3-7%5
7-12%15
12-20%25
20-30%40
30-45%50
>45%60
Closed Forest 5
Open Forest -Woodland 4
Closed Forest (Black Spruce,
Mountain Hemlock)25
Open Forest Woodland
(Black Spruce)70
Non Forested
Salt Water Wetland
Grassland 80
Low Shrub 80
nd~.r~80
Tall Shrub
Alder 3
Alder-Willow 3
Low Shrub
Willow-Resin Birch 2
Grassland
Grassland 1
Tundra
Sedge-Grass 20
Herbaceous 15
Sh~ub 20
Mat-Cushion 20
Freshwater
Sphagnum Bog 70
Shagnum Shrub Bog 70
Cultural
Cultural Influence 1
Barren
Mud Flats 80
Rock 80
Snow
Snow Field 100
Glacier laO
Water
Lake GE 40 Acres 150
-35-
Value
(Proximity)
Consideration
Vegetation Cover
Cont'd
Hydrology
MODEL Su}~TION RULES
High Suitability
Moderate/High
Moderate
Low
Very Low
Extremely Low
Specific Data Class
Lake GE 10 Acres ,and
LT 40 Acres
Stream or River GE 165
Feet Wide and LT 660
Feet Wide
River GE 600 Feet Wide
Stream Order 1-8
Stream or River LT 165·
Feet Wide
0-10
11-15
16-30
31-60
61-100
GT 100
-36-
Value
(Incidence)
150
150
150
100
Value
(Proximity)
[
['
[
['
[
r·
L~
r"-----'
[
L
[
L
[
L
C
[
f"
r-
L
r-
L
L
APPENDIX A
UPPER SUSITNA
DATA CLASSIFIC4TION AND CODING
A-1
[
[
[
[
[
[
[
PLj
rL
[
6
G
C
G
[
L
L
L
UPPER SUSITNA
MANUSCRIPT 111
INTEGRATED TERRAIN UNIT MAP
DATA CLASSIFICATION AND CODING
SLOPE
Slope Gradient (Column 1)
1 =0-3%
2 =3-7%
3 =7-12%
4 =12-20%
5 =20-30%
6 =30-45%
7 =Greater than 45%
LANDFORM
Physiographic Division (Column 2)
1 =Mountain
2 =Hill
3 =Slope
4 =Plateau
5 =Valley
6 =Coastal Lowlands
7 =Glacier
8 =Waterbody
Landform Type (Column 3,4 and 5)
GLACIAL
no =Moraine
III =End Moraine
112 =Lateral Moraine
113 =Medial Moraine
114 =Morainal Ridge
115 =Rogen Moraine
116 =Ground Moraine
120 =Till
121 =Till,Undifferentiated
r-130 Drumlin
L
CH-139'A-2
132 =Rock Drumlin,Drumlinoid [
FLUVIOGLACIAL
LITTOP.AL
AEOLIA~
210 Out,V'ash
220 -Abandoned Outwash Channel
230 Remnant Subglacial Streara Valley
240 =Kame Complex
250 =Esker
260 Crevasse Filling
270 =Side Glacial Drainage Channels
280 =Flute
E
Dune
Dune and Outwash Complex
310 =
311
410 =
411
412
420
430
440 =
441
442
443
444
445
Longshore Bar
Longshore Bar Within Abandoned Coastline (Not Surveyed Flood Zone)
Longshore Bar Within Abandoned Coastline (Surveyed Flood Zone)
Beach
Barrier Spit
Delta
Delta-Floodplain Within Abandoned Coastline (Not Surveyed Flood
Zone)
Delta-Floodplain Within Abandoned Coastline (Surveyed Flood Zone)
Delta-Floodplain (Not Surveyed Flood Zone)
Delta-Floodplain (Surveyed Flood Zone)
Delta and Outwash Complex
['
L
[
[
C
F
b
FLUVIAL
450 =Tidal Flat
451 Tidal Flat ~Vithin Abandoned Coas tline (Not Surveyed Flood Zone)
452 Tidal Flat Within Abandoned Coastline (Surveyed Flood Zone)
460 =Coastal Plain
510 =
511 =
512
Active Ch~nnel
Active Channel (Not Surveyed Flood Zone)
Active Channel (Surveyed Flood Zone)
c
[
L
520
521
River Bar
River Bar (Not Surveyed Flood Zone)
I:
L
CH-E9 A-3 L
[
[
620 =Talus
r"1 630 =Landslide Deposits
L
[
[
[
r'L4
[
6
c
[
G
[
522 River Bar (Surveyed Flood Zone)
530 Floodplain
531 Active (Not Surveyed Flood Zone)
532 Active (Surveyed Flood Zone)
.533 =Abandoned (Not Surveyed Flood Zone)
534 =Abandoned (Surveyed Flood Zone)
550 =Alluvial Plain
560 Alluvial Fan/Cone
570 Lacustrine Deposits
IvIASS WASTING
610 Colluvium
640 =Rock Glacier
650 Mine Tailings
TECTONIC UPLIFT
710 =Upland'Valley
720 =Mountain Sides lope
730 =Mountain Ridgetop
~·7ATERBODY
810 =Sea
820 Lagoon
821 Lagoon Within Abandoned Coastline (Not Surveyed Flood Zone)
822 Lagoon Within Abandoned Coastline (Surveyed Flood Zone)
[
r-
L
LL
830 Lake
831 Lake
832 Lake
833 =Lake
834 Lake
835 Lake
840 River
CH-139
Within Abandoned Coastline (Not Surveyed Flood Zone)
Within Abandoned Coastline (Surveyed Flood Zone)
in Active Floodplain (Not Surveyed Flood Zone)
in Active Floodplain (Surveyed Flood Zone)
A-4
841
842
River (Not Surveyed Flood Zone)
River (Surveyed Flood Zone)
[
[
[
ICE ANr5'SNOH
910 =Glacier
920 Permanent Snowfield
GENERAL GEOLOGY
Surficial Geology (Column 6)
1 =No Surficial Depositis
2 =Surficial Deposits
3 =W'aterbody
4 =Glacier
Bedrock Geology (Columns 7 and 8)
01 =Tertiary,Undifferentiated (Tu,Qag)
02 Tertiary Intrusive (Ti)
03 =Tsadaka Formation (Tt)
04 =Arkose Ridge Formation (Tar)
.05 =Chickaloon Formation (Tc)
06 =.Tertiary/Cretaceous Plutonic (TKgd)
07 =Paleozoic/Jurassic/Cretaceous,Undifferentiated Sediments and
Metasediments (PKJu)
08 Mesozoic/Paleozoic Metamorphosed Schist (MPs)
09 Waterbody
10 Tyonek Formation,Sedimentary Rock,Primary Sandstone (Tts)
11 Mesozoic Marine Sedimentary Rocks,Undivided (including Graywacks,
shale,siltstone,argillite,and chert)(Kju)
12 =Metamorphosed Volcanic Rocks (Pzv)
13 =Undifferentiated Volcanic Rocks (Tv)
14 Intrusive Igneous Rock,Granite or Granodiorite (Ruth Pluton)(Tror)
15 Sterling Formation,Sedimentary Roc1~(Tps)
16 =Inrusive Igneous Rock,Granite or Granodiorite (Kahiltna Pluton)
(Tmk)
17 =Undifferentiated Sedimentary Rocks (Tsu)
18 =Glacier
19 =Kenai Formation,Sandstone,Conglomerate,Siltstone,Claystone (Tku,
Tkm,Tkl)
20 Landslide Deposits (Qls)
21 Jurassic,Plutonic and Metamorphic Rocks Undifferentiated (Jtr,Jg,
Jm,Jp,Jpm)
22 Triassic-Jurassic Volcanic and Sedimentary Rocks Undivided (Jtra,
Jtrs)
23 =Marble (PIs)
r~
L
[
rL----:;
[
L
[
[
[
c
[
CH-139 A-5 L
[
[
[
[
[
[
r-'
[
r
L
[
c
c
24 Gra~.acke,Argillite,Shale and other Sedimentary Rocks (DS)
25 Quaternary-Tertiary Volcanics and shallow intrusives
26 Tertiary Continental Sedimentary Rocks
27 =Mesozoic-Paleozoic Volcanics
28 =NC'sozoic-Paleozoic Plutonics and shallow intrusives
29 Paleozoic Metasedimentary and Metavolcanics Undifferentiated
99 =Waterbody
NO DATA (Column~9-27)
0000000000000000000 =NO DATA
VEGETATION
Primary Vegetation (Columns 28 and 29)
Secondary Vegetation (Columns 30 and 31)
Tertiary Vegetation (Columns 32 and 33)
Quaternary Vegetation (Columns 34 and 35)
FOREST AND WOODLAND
Closed Forest
21 =Coniferous Forest,White Spruce,Short Stands
22 =Deciduous Forest,Mixed Forest,Young Stands
24 Deciduous Forest,Mixed Forest,Medium-Aged Stands
25 Coniferous Forest,White Spruce,Tall Stands
26 Deciduous Forest,Mixed Forest,Old Stands
27 Cottonwood,Young Stands
28 =Cottom-TOod,Medium-Aged Stands
29 Cottonwood,Old Stands
Open Forest-Woodland
[
31
32
33
34
35
36 =
Coniferous Forest,White Spruce,Short Stands
Deciduous Forest,Mixed Forest,Medium-Aged Stands
Coniferous Forest,White Spruce,Tall Stands
Deciduous Forest,Mixed Forest,Old Stands
Cottonwood,Medium-Aged Stands
Cottonwood,Old Stands
f~Closed Forest (Black Spruce Mountain Hemlock)
rL
41
42 =
45 =
46
Black Spruce,Short Stands
Black Spruce,Tall Stands
Mountain Hemlock,Short Stands
Mountain Hemlock,Tall Stands
CH-139 A-6
[
Low Shrub
NON FORESTED
Sal t Water Ivetlands
Tall Shrtibs
f~
r~
[
f
·,
-,
L
r\.~
Alder
Alder-Willow (streamsi4e veg.)
43 =Black Spruce,Short Stands
Open Forest-Woodland (Black Spruce)
50 =Salt Grassland
51 =Low Shrub
52 =Tidal Marsh
60
61 =
62 =Willow Resin Birch
Grassland
Tundra
Cultural Features
Freshwater Wetlands
Barren
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Sphagnum Bog
Sphagnum-Shrub Bog
Sedge-Grass
Herbaceous
Shrub
Mat and Cushion
64 -
65 =
66 =
67
70 =Cultural Influences
63 =Upland Grass
68
69 =
80 =Hud Flats
81 Rock
Permanent Snow and Ice
82 Snowfield
83 Glacier
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Water
91 =Lakes greater than 40 ac.(census water)
92 Lakes at least 10 ac.,but less than 40 ac.
96 Streams and Rivers at least 165 feet wide,but less than 500 feet
wide
97 Rivers greater than 1/8 mile (census water)
CH-139 A-8
APPENDIX B
DATA CODE DESCRIPTIONS
B-1
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UPPER SUSITNA
MANUSCRIPT III
INTEGRATED TERRAIN UNIT MAP
DATA CODE DESCRIPTIONS
Slope is defined as the angle which any part of the earth's surface
slope was mapped by percent s~ope class.The assigned value represents the
makes with a horizontal datum.For the Uppe~Susitna resource inventory~
SLOPE
average percent slope within the terrain unit polygon.Some variation will
~occur within each polygon because of minor surface fluctuations.The same
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slope classes were chosen to be mapped on the terrain units that were mapped
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as phase breaks in SCS soil surveys.
0 -3%=Nearly level
3 -7%=Undulating,gently sloping
7-12%=Rolling
12-20%=Hilly
20-30%Moderately Steep
30-45%=Steep
45%and greater =Extremely Steep
Percent Slope Angle of Inclination Slope Ratio Gradient (feet per mile)
3 1 43'33.3:1 158.4
7 4 l'14.3:1 369.6
12 6 53'8.3:1 633.6
20 11 28'5:1 1056
30 17 11'3.3:1 1584
45 25 41'2.2:1 2376
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LMIDFOP.MS
Landforms are the distinctive configurations of the land surface and are
environmentally significant because they influence the place to place
variation in ecological factors such as water availability and exposure to
radiant solor energy.
PHYSIOGRAPHIC DIVISION
Physiographic division is a type of landform classification which
divides the land surface into broad major categories.
1 =Mountain:A sloping mass of land considerably higher than its
surroundings.Its sUtlIllit area is smaller than its base and has an
elevation over 1500 feet.
2 =Hill:An elevated portion of the earth's surface which has an undulating
to moderately steep sloping surface.Hills are generally found along the
foot of mountainous areas and have elevations less than 1500 ft.
3 =Slope:A moderately steep to steep portion of the earth's surface
generally located between valley and mountain or hill and mountain
physiographic divisions.
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Plateau:An elevated tract of comparatively flat or level land.
Valley:A relatively flat depression in the earth's surface formed
either by erosion or by structural processes.
6 =Coastal Lowland:Regional features of low relief bounded seaward by the
shore and landward by highlands.
7 =Glacier:A extensive slowly flowing body of ice formed on land by snow
transformed into ice by pressure recrystallization of the snow.
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8 Uaterbody:Any accumulation of water which occurs on the earth's
surface.For the Upper Susitna Resource Inventory,only waterbodies over
80 acres were mapped.
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LANDFORM TYPE
A landform type is any element of the landscape characterized by a
distinctive surface expression,internal structure,or both,and sufficiently
conspicuous to be included in a physiographic description.Physiographic
divisions are subdivided by the more detailed landform type classification.
Glacial[
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Glacial landforms are created or deposited by a glacier.
Moraine:An accumulation of glacial till (glacial sediments ranging in
size rom huge bou~ders to fine dust)deposited chiefly by direct
glacial action.The resul'ting landforms are undulating,poorly
drained,and exhibit a topography which is independent of'control by
the surface on which the moraine lies.
End Moraine:A moraine marking the terminal position of a valley
glacier.
Lateral Moraine:A low long ridge-like moraine deposited on or near
the side margin of a mountain glacier.
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113 Medial Moraine:An enlongated moraine carried in or upon the middle of
a valley glacier and parallel to its side,formed by the merging of
adjacent lateral moraines below the junction of two coalescing valley
glaciers.
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Morainal Ridge:A pronounced mound or ridge of till within a moraine.
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Rogen Moraine:A"ridge-like moraine transverse to the direction of
glacial movement formed beneath the glacier in zones of shearing ice
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Ground Moraine:A fairly even thin layer of till deposited directly
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from a glacier and.having an undulating surface.
120 =Till:Unsorted,unstratified sediments carried and deposited by a
glacier.It is composed of rock fragments of all sizes and types".
121 -Till,Undifferentiated:A thick layer of till deposited directly from
a glacier onto the earth's surface.Till often completely burys pre-
existing topography giving rise to nearly flat level surfaces.The
composition of the till,both rock type and fragment size,is
unspecified.
130 =Drumlin:Till molded by glacial ice into low,enlongated hills with
the longer axis parallel to the direction of .the glacial movement.
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131 Drumlin-Drumloid:This landform class is a combination of druolin and
drumloid.A drumlin is till molded by glacial ice into low,enlongatcd
hills with the longer axis parallel to the direction of the glacial
movement.A drumloid is similar to a drumlin except that its shape is
irregular.
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132 =Rock Drumlin-Drumlinoid:This landform class is a combination of rock
drumlin and drumlinoid.Rock drumlin is a smooth,steamlined hill that
\.resembles a drumlin,but has a bedrock core usually veneered with a
thin layer of till formed by glacial erosion.A drumlinoid is an
irregularly shaped rock drumlin.
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Fluvioglucial
Fluvioglacial landforms are formed or deposited by glacial meltwater.
2JO =Outwash:Stratified glacial debris,mainly sand and gravel,deposited
by glacial meltwater beyond the end moraine or the margin of an active
glacier.
220 =Abandoned Outwash Channel:Outwash deposited by a remnant stream
channel which once emerged from a glacier,braided in form,now often
covered by wetland and associated organic deposits.
230 Remnant Subglacial Stream Valey:A stream valley formed by a stream
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which flowed beneath the once overlying glacier.
240 =Kame Complex:Mounds,hills,or hummocky areas composed of poorly
sorted sands and gravels deposited by glacial meltwater in depressions
in the ice or fan deposits formed against the edge of an ice sheet.As
the glacier melts their form is modified by slumping and s~ttling.
250 Esker:Low,narrow,sinuous ridges of poorly sorted sands and gravel
deposited by streams that ran on,within,or beneath a glacier.
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260 =Crevasse Filling:Type of kame that is ridge-like.They are composed
of poorly sorted sand and gravels,and are similar in appearance to
eskers except that they are smaller and shorter and may extend in any
direction to the flow of the glacier (where eskers usually parallel the
glacial flow).
270 =Side Glacial Drainage Channels:Drainage channels cut into the
hillside along the margins of a glacier by stream.
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280 Flute:Small,longitudinal,shallow channels between small parallel
ridges,found on moraines.
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Aeolian
Aeolian landforms are shaped or formed by the wind.
310 =Dune:A ridge of sand formed by and constantly changed by wind.
311 =Dune and Outwash Complex:A dune which formed on outwash.
Littoral
Littoral landforms are situated on or near a coast.
410 =~ongshore Bar:A low,elongated sand ridge,built chiefly by wave
action,occurring at some distance from and extending generally
parallel with the shoreline.
Abandoned Coastline:Narks the locations of past ocean levels.They
are formed either by a reduction in the ocean level or an emergence of
the coast.
Survey Flood Zone:Areas which have been surveyed by the Army Corps of
Engineers,and established to be flood prone.
Not Surveyed Flood Zone:Areas established by Aerial Information
System CAIS)to be flood prone by using the imagery,topographic maps,
soil maps,and soil descriptions.
411 =Longshore Bar Within Abandoned Coastline,Not surveyed Flood Zone:
This longshore bar is located on the seaward side of the abandoned
coastline and has been established to be flood prone by AlS.
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412 Longshore Bar Within Abandoned Coastline,Surveyed Flood Zone:A
longs ore bar located on the seaward side of the abandoned coastline
which has been established to be flood prone by the Army Corps of
Engineers •.
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420 Beach:The coastal zone extending from the low tide limit to a place
where t~ere is a definite change in material or physiographic form.It
must at least partly consist of unconsolidated material like sand,
cobble,or boulders.
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430 -Barrier Spit:A type of longshore bar connected at one end to the
mainland.
440 =Delta:A low,nealy flat accumulation of sediments deposited where
rivers empty into lakes or ocean.
441 =Delta-Flood Plain Within Abandoned Coastline,Not Surveyed Flood Zone:
A type of delta within the active flood plain of a river and located on
the seaward side'of the abandoned coas·tline.It has also been
established to be flood prone by AIS.
442 =Delta-Flood Plain Within Abandoned coastline,Surveyed Flood Zone:A
type of delta within the active flood plain of a river and located on
the seaward side of the abandoned coastline.It has been established
to be flood prone by the Army Corps of Engineers.
443 Delta-Flood Plain,Not Surveyed Flood Zone:A type of delta within the
active flood plain of a river.It has been established to be flood
prone by AlS.
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444 Delta-Flood Plain,Surveyed Flood Zone:A type of delta within the
active flood plain of a river.It has been established to be flood
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prone by the Army.Corps of Engineers.
Delta and Outwash Complex:This landform type is a mixture of delta
and outwash landform types.It usually occurs on the interface between
the two landform types.
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450
451
Tidal Flat:A nearly horizontal,marshy or barren tract of land that
is alternately covered and uncovered by the rise and fall of the tide,
and consists of unconsolidated sediments,mostly mud and sand.
Tidal Flat Within Abandoned Coastline,Not Surveyed Flood Zone:A type
of tidal flat located on the seaward side of the abandoned coastline
which has been established to be flood prone by AIS.
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452 =Tidal Flat Within Abandoned Coastline,Surveyed Flood Zone:A type of
tidal flat located on the seaward side of the abandoned coastline which
has been established to be flood prone by the Army Corps of Engineers.
460 Coastal Plain:A sediment-covered area of continental shelf recently
emerged above sea level.
Fluvial
Fluvial landforms are formed or shaped by flowing water.
510 =Active Channel:A river plus all of its ephemeral sand bar deposits.
511 =Active Channel,Not Surveyed Flood Zone:Active channels which have
been established to be flood prone by Aerial Information Systems.
512 Active Channel,Surveyed Flood Zone:Active channel which have been
established to be flood prone be the Army Corps of Engineers.
520 =River Bar:Ephemeral,alluvial deposits composed largely of silt,sand
or gravel.They are mostly unvegetated,but some might have grass and
shrub cover.
521 River Bar,Not Surveyed Flood Zone:River bar which has been
established to be a flood prone area by Aerial Information Systems.
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522 River Bar,Surveyed Flood Zone:River bar which has been established
to be flood prone by the Army Corps of Engineers.
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531
Flood Plain:A flat strip of land bordering a river.It was
constructed or is in the process of being constructed by the present
river in its existing regime and is covered with water when the river
overflows its bank at time of high water.
Active Flood Plain:A flood plain which is subject to periodic,often
yearly,flooding.
Abandoned Flood Plain:A remnant flood plain,portions of which may be
infrequently flooded.
Active Flood Plain,Not Surveyed Flood Zone:Active flood plain which
has been established to be flood prone by Aerial Informtion Systems.
532 =Active Flood Plain,Surveyed Flood Zone:Active flood plain which has
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been established to be flood prone by the Army Corps of Engineers.
Abandoned Flood Plain,Not Surveyed Flood Zone:Abandoned flood plain
which has been established to be flood prone by Aerial Information
Systems.
Abandoned Flood Plain,Surveyed Flood Zone:Abandoned flood plain
which has been established to be flood prone by the Army Corps of
Engineers.
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550 =Alluvial Plain:An extensive,flat area r~sulting from the deposition
of thick deposits of alluvium.Portions of the alluvial plain may be
subject to infrequent flooding.
560 =Alluvial Fan/Cone:A body of stream deposits whose surface
approximates a segment of a cone that radiates downslope from the point
where the stream leaves a mountainous area.Alluvial fans and cones
CH-15i B-10
have greatly diverse sizes,slopes,types of deposits and source area
characteristics.
570 =Lacustrine Deposits:Material deposited from lake water.Many nearly
level fine grained soils have developed from such deposits from lakes
that have long since disappeared.
Mass lias ting
Mass wasting is a vari~ty of processes by which large masses of earth
material are moved by gravity either slowly or quickly from one place to
another.
610 =Colluvium:Unconsolidated debris,rock fragments and soil,carried by
sheet wash from hillsides to the base of the slope.
620 Talus:A collection of loose rock fragments that have accumulated in a
sloping pile at the foot of a steep slope.
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630 Landslide Deposits:Materials associated with downslope transport by
means of gravity of soil and rock debris.
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640 =Rock Glacier:A mass of poorly sorted angular boulders or fine
material cemented by interstitial ice,occurring in high mountains in a
permafrost area,derived from a cirque wallar other steep cliff by
fros t action.
650 =Mine Tailings:Those portions of washed are (usually rock fragments)
that are regarded as too poor to be treated further.They are
artificially deposited usually near a mining operation.
Tectonic Uplift
Tectonic uplift is a process by which land surfaces are elevated due to
deformation of the earth's crust.
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710 Upland Valley:Any hollow or low lying area bounded by hills or
mountain slopes.It is usually traversed by a stream or river which
receives the drainage of the surrounding heights.An upland valley is
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one which is found within the mountain physiographic province class.
720 Mountain Sideslope:The sloping portion of land found within the
nountain physiographic province class.
730 =Mountain Ridgetop:The gently sloping area found on the summit of a
mountain.It is surrounded on at least two sides by steep mountain
sideslopes.
Waterbody
A waterbody is any accumulation of water which occurs on the earths
surface.For the Upper Susitna Resource Inventory only waterbodies over 80
acres and were mapped.
810 =Sea:An ocean or a large body of salt water.
820 =Lagoon:An elongated body of water separated from the open sea by
longshore bars,which has little connection with the sea.
821 =Lagoon Within Abandoned Coastline,Not Surveyed Flood Zone:A lagoon
which lies on the seaward side of the abandoned coastline and which was
determined to be flood prone by AIS.
822 Lagoon Within Abandoned Coastline,Surveyed Flood Zone:A lagoon which
lie on the seaward side of the abandoned coastline and which was
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831
determi.ned to be flood prone by the Army Corps of Engineers.
Lake:A body of fresh water enclosed by land.Only lakes 80 acres and
larger were mapped for the Upper Susitna Resource Inventory.
Lake
[CH-157 B-12
832 =Lake Within Abandoned Coastline,Not Surveyed:A lake which lies on
the seaward side of the a~~ndoned coastline and which was determined to
be flood prone by AIS.
833 Lake Within Abandoned Coastline,Surveyed Flood Zone:A lake which
lies on the seaward side of the abandoned coastline and which was
determined to be flood prone by the Army Corps of Engineers.
834 =Lake in Active Flood Plain,Not surveyed Flood Zone:A lake which is
located in an active flood plain and which was de·termined to be flood
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prone by AIS.
Lake in Active Flood Plain,Surveyed Flood Zone:A lake which is
located in an active flood plain and which was determined to be flood
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prone by the Army Corps of Engineers.
840 =River:A natural stream of .water,fed by converging tributaries,L
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glaciers,or ground water.
River,Not Surveyed Flood Zone:A river which has been established as
a flood prone area by Aerial Information systems.
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842 River,Surveyed Flood Zone:A 'river which has been established as a
flood pron.e area by the Army Corps of Engineers.
Ice and Snow
Non-vegetated areas covered with ice,(glaciers)or snow (permanent
snowfield)year round.
910 =Glacier:An extensive slowly flowing body of ice formed on land by
snow transformed into ice by pressure recrystallization of the snow.
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920 Permanent Snowfield:Areas covered throughout the year by snow.
Permanent snowfields are found in the higher elevations.
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GENERAL GEOLOGY
General Geology is divided into the following subsections:Surficial
Geology and Bedrock Gr:ology.To assist in interpreting their descriptions,a
brief glossary of some important terms is provided at the end of this set of
code descriptions.
SURFICIAL GEOLOGY
Surficial Geology describes the material occurring on the earth's
surface,consisting of unconsolidated residual,alluvial deposits,glacial
deposits,or bedrock surfaces.
1 =No Surficial Deposits:Large areas within the upland and mountain areas
of the study area were coded as having no significant surficial deposits.
However,much of the lower slopes within this area do have a thin veneer
of glacial till and colluvium and within valley bottom,alluvium.
2 Surficial Deposits:Includes glacial till and outwash,channel fill,
alluvium.colluvium and loess deposits.The lowland valley areas are
covered by thick deposits of glacial drift and alluvial sediment that
consists mainly of gravelly and sandy material.and deposits of silty
windlaid sediments and volcanic ash.
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3 =Waterbody:Only waterbodies larger than 80 acres were mapped.
4 =Glacier:Areas of glacial ice and/or permanent snowfields ·on the
surface.
BEDROCK GEOLOGY
Bedrock Geology describes the rock formation.age~and types underlying
those in surficial geology.
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01 =Tertiary Undifferentiated (Tu,Qag):All the tertiary age formations
not identified as a particular formation.
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Tertiary Intensive"(Ti):Made up of dikes,sills,and stock;Felsic to
mafic of tertiary age.
Tsadaka Formation (Tt):A formation of conglomerates,sandstone,and
siltstone of tertiary age.
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04 =Arkose Ridge Formation (Tar):This unit consists of arkosic sandstone,
conglomerate,and shale of paleocene age.
05 =Chickaloon Formation (Tc):This unit is composed of claystone,
siltstone,sandstone,coal-bearing beds,and conglomerate of Paleocene
age.
06 =Tertiary/Cretaceous Plutonic (TKgt):A general grouping of a pluton
mass,or body of igneous rock formed beneath the earth's surface,that
has an origin sometime between the Tertiary and Cretaceous periods.
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Paleozoic/Jurassic/Cretaceous,Undifferentiated Sediments and
Metasediments (PKJu):A general grouping of partially changed
unidentified rock formations found with these periods.
Nesoic/Paleozoic Metamorphozed Schist (MPs):Formation of a medium or
coarse grained rock changed over time.
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10 =Tyonek Formation (Tts):Ths formation is comprised of predominantly
sandstone,but also includes siltstone,coal-bearing beds,and
conglomerate of Ogliocene age.The conglomerate may be locally the
dominant rock type.The Tyonek formation is part of the Kenai Group.
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11 =Mesozoic Marine Sedimentary Rocks,Undivided (Kju):This designation is
utilized to refer to an unnamed body of rocks consisting primarily of
grawacke,shale,siltstone,argillite,and chert of Jurassic to
Cretaceous age.
12 =Metamorphosed Volcanic Rocks (Pvz):This designation is utilized to
refer.to a body of metavolcanic rocks of Paleozoic age.
13 =Undifferentiated Volcanic Rocks (Tv):This unit is utilized to refer to
all unnamed volcanic rocks of Tertiary age.These volcanics may occur
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as extensive flows,hypabyssal intrusive rocks,pyroclastic tuffs and/or
volcanic breccias.
Intrusive Igneous Rock,Granite or Granodiorite (Ruth Pluton)(Tmr):
This designation refers to th~Ruth Pluton,which consists of a number
of shallow,forcibly emplaced,epizonal plutonic bodies of granodiorite
composition formed during the Paleocene to possibly Eocene Age.
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15 Sterling Formation (Tps):This unit is comprised of sandstone and
siltstone beds with some coal-bearing strata of Miocene to Pliocene Age.
The Sterling Formation is considered part of the Kenai Group.
16 =Intrusive Igneous Rock,Granite or Grandodiorite (Kahiltna Pluton)
(Tmk):The designation refers to the Kahiltna Pluton,which is composed
of nl~erous forcibly placed,epizonal plutonic bodies of granite and/or
granodiorite formed during Tertiary times.
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17 Undifferentiated Sedimentary Rocks (Tsu):This unit refers to all the
Paleocene to Pliocene (Tertiary)sedimentary formations occuring within
the study area.This designation is used primarily when the body of
rock cannot be correlated to any specific formation.These formations
CH-157 B-16
include the Kenai Group,Tsadaka Formation,West Foreland Formation,
Wishbone Formation,Arkose Ridge Formation,Chickaloon Formation and
others.
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18 =Glacier:This unit refers to glacial ice and permament snowfields which
are of sufficient thickness to obscure the identification of the
underlying country rock.
19 =Kenai Formation,Sandstone,Conglomerate,Siltstone,Claystone (Tku,
Tkm,Tki):This group is composed of sandstone,siltstone,coal-bearing
beds,and conglomerate of Oligocene to Pliocene age.The unit consists
of the.Sterling Formation,the Beluga Formation,the Hemlock
Conglomerate,and the Tyonek Formation.
20 Landslide Deposits (Qls):This unit is comprised of mass-wasting
products of Quaternary age.The unit is considered part of the
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surficial cover deposits.
Jurassic,Plutonic and Metamorphic Rocks Undifferentiated (Jtr,Jg,Jm,
Jpm):This unit is composed of a-grouping of complexly related plutonic
igneous and deep-seated metamorphic crystalline rocks of Jurrassic age.
Triassic-Jurassic Volcanic and Sedimentary Rocks Undivided (JTr,JTrs):
This unit is comprised of predominantly marine,intercalated tuffs,lava
flows,and silicaeous sedimentary rocks of Triassic or Jurassic age.
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of probable Paleozoic age.
Graywacke,Argillite,Shale and other Sedimentary Rocks (DS):This unit
consists of slightly metamorphosed to unmetamorphosed silicaeous
sedimentary roc~s of Silurian and Devonian age.
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2S Quaternary-Tertiary Volcanics and shallow Intrusives.This designation
is comprised of andesitic and basaltic volcanic and hypabyssal intrusive
rocks of Quaternary or Tertiary age.This unit includes the Wrangell
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Lava.'
26 =Tertiary Continental Sedimentary Rocks:This type is composed of all
Tertiary non-marine sedimentary roct~(Paleocene to Pliocene)found in
the study area,and particularly includes the Gakona Formation.
27 =Mesozoic-Paleozoic Volcanic Rocks:This unit consists of andesitic and
basaltic volcanic rocks of Permian and Triassic age,and Tuffs and lava
flows of undifferentiated composition of Carboniferous or Jurassic age.
This designation includes the Nikolai Greenstone.
28 =Mesozoic-Paleozoic Plutonics and Shallow Intrusive Rocks:This type is
comprised of both deep-seated plutonic.igneous and hypabyssal intrusive
igneous rocks of possibly Carboniferous age or older to Cretaceous age.
29 =Paleozoic Metasedimentary and Metavolcanics Undifferentiated:This
designation consists of intercalated generally moderately metamorphosed
sedimentary and volcanic rocks of Carboniferous age or older.This unit
includes the Strelna and Chisna Formation,the Dedina Schist,Tetelna
Volcanics,and the Klutina Group.
99 =\1aterbody
VEGETATION
Primary Vegetation
Secondary Vegetation
Tertiary Vegetation
Quaternary Vegetation
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Wherever possible,pure strands of any vegetation type were delineated
as polygons and given the appropriate primary vegetation code.However,many
vegetation types can occur in stands of less than eighty acres,the minimum
mapping resolution,and are therefore too small to be mapped as discrete
polygons.If only the primary vegetation type was mapped,polygons less than
80 aces would be ignored.This vegetation classification deals with these
small vegetation stands by identifying not just a polygon's primary
vegetation,but also the secondary,tertiary,and quaternary vegetation.The
dominant vegetation type is coded as the primary v~getation,and any
additional vegetation types which occur within the polygon are coded
secondary,tertiary or quarternary vegetation.
Forest -Woodland
Forest:Forest land is land with more than 50%of tqe area having tree
crown cover or formerly having 50%cover.
21 =Coniferous Forest,lVhite Spruce,Short Stands,Closed Forest:Main
canopy usually less than 30 ft.in height,usually found at higher
elevations as isolated pockets in area dominated by alder,grassland,or
open mixed stands.
22 =Deciduous Forest,Mixed Forest,Young Stands,Closed Forest:Canopy is
usually very finely·textured as'seen from above,openings in stand are
very rare.Composed mostly of birch and/or aspen.This type very
rarely mixed with other types except when found as a remnant condition
in burned areas.Spruce is.not usually evident asa component of the
overs tory in these young stands.0-40 years old.
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en-IS7 B-19 [
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24
25
Deciduous Forest)Mixed Forest)Medium-Aged Stands,Closed Forest;
Canopy is usually fine textured as seen from above)openings may be
fairly common but they are usually small.Elements of this type include
birch,spruce and aspen.Birch is usually found as a main component of
this type but percent composition may vary greatly depending on a number
of f~ctors,e.g.,as the type increases in age,the percentage of white
spruce as a crown component usually increases along with the amount of
understory and number of stand openings.40-10P years age.
Coniferous Forest,White Spruce,Tall Stands,Closed Forest;Main
canopy usually greater than 30 ft.in height,usually found at lower
elevations on better sites,almost always found mixed with old and
decadent deciduous trees (very rarely found as a pure type in Susitna
Valley).
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26 =Deciduous Forest,Mixed Forest,Old Stands,Closed Forest:Canopy is
usually somewhat coarse textured as seen from above,openings are
usually common and may cover close to half of the stand area.Canopy
may also appear smooth,but openings appear as definite holes in the
crown.Deciduous t~ees in these old stands are usually decadent.
Spruce is usually becoming the dominant species.The understory
component of the stand is usually visible from above and includes
Calamagrostics and Alnus as its most common species.These stands are
l 27
always greater than 100 years old.
Cottonwood,Young Stands,Closed Forest:Most commonly found on new
islands,downstream ends of old islands,and point bars of rivers.
CH-157 B-20
28
Cottonwood or poplar is usually found mixed with large alder and/or
willow -(understory is sparse to nonexistent).0-40 years old.
Cottonwood,Medium-Aged Stands,Closed Forest:Most commonly found in a
riverine situation or within at least one mile of a river (alluvial
soils).Stands are usually pure cottonwood or poplar,spacing is even
and crown closure approaches 100%.Understory in the Susitna Valley is
dominated by alder and devil's club.40-100 years old.
29 =Cottonwood,Old Stands,Closed Forest:Most commonly found in riverine
influence (alluvial soils).Stands may be mixed with young white
spruce.Cottonwood are extremely large (30-40 inches in diameter)and
decadent (larger trees may be only shells).Stand appears somewhat
clu~py due to openings appearing in stand.Understory includes large
quantities of alder,devil's club and willow.Greater than 100 years
old.
Open Forest -Woodland
A forest or woodland area with 10%-50%crown cover.
31 Coniferous Forest,White Spruce,Short Stands,Woodland:Usually found
at higher elevations as a transition type between closed forest and high
elevation nonforest areas.Usually found mixed with elements of the
higher elevation type,i.e.,if the higher elevation type is a mixture
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32
of alder and grass then the open white spruc~transition type will
normally be forming a complex type with alder and grass.30 feet tall.
Deciduous Forest,Mixed Forest,Medium-Aged Stands,Woodland:Although
birch/aspen stands are not usually found as a transition type between
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33
forest and high elevation nonforest areas,they are often found just
below areas of type 31.40 years old.
Coniferous Forest,White Spruce,Tall Stands,Woodland:Same as type 31
except normally found at lower elevations or on better sites.Commonly
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found in creek bottoms mixed with alder/willow and grass.30 ft.tall.
34 =Deciduous Forest,Mixed Forest,Old Stands.Woodland:Found in same
general location as type 33.Found in ,association with grass ~nd alder.
Birch,in this type,is usually found growing in very small,tight
clumps.Spruce are usually found to have an open grown form and are
normally much younger than the hardwood component of the type.
35 =Cottonwood,Medium-Aged Stands,Woodland:Usually found at treeline
just above elevational limit of open white spruce.Found in pockets
among low shrubs.
36 =Cottonwood,Old Stands,Woodland:Two elevational phases of this type
seem to occur.The high elevation phase,consisting of balsam poplar,
may be"found mixed with streamside alder/willow along flowing water on
high elevation flats.The low elevation phase.consisting of
cottonwood,may be found on major river flood plains growing with a
confusing mixture of other types including open spruce,open birch,
alder,grass,etc.
Closed Forest (Black Spruce Mountain Hemlock)
A forest area having a greater than or equal to 50%crown cover composed
of black spruce or mountain hemlock.
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41 Black Spruce,Short Stands,Closed Forest:Main canopy usually less
than 30 ft.in height,generally found on wet and/or cold (poor)sites,
L CH-157 B-22
may be found mixed with birch of poor quality but usually found as a
pure type forming islands and stringers in bog areas or transition zones
between bog area and forest areas.Understory is usually a thick moss
and/or sedge mat.
42 =Black Spruce,Tall Stands,Closed Forest:Main canopy usually greater
than 30 ft.in ht.Can usually be identified as a fire formed stand,on
relatively good sites,stands are remarkably pure and the stocking
•
density is usually quite high..May be found mixed with very scattered
birch.
45 =Mountain Hemlock,Short Stands,Closed Forest:Main canopy less than 30
ft.-Geographically.limited in Susitna Valley to higher ground west of
Tyonek,fourid as stringers mixed with other local types.
46 =Mountain Hemlock,Tall Stands,Closed Forest:Main canopy greater than
30 ft.Geographically limited in Susitna Valley to low ground west of
Tyonek,found as stringer stands mixed with other local types.
Open Forest -Woodland (Black Spruce)
Includes black spruce stands with 10%to 50%crown cover.
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43 Black Spruce,Short Stands,Open Forest-Woodland:Found in association
with bog types.Black spruce are usually of very poor form.Site is
either wet or cold or both -trees usually less than 15 ft.in height.
Non Forested
Non forested land is land with less than 10%of the area having tree
crown cover.
Sal t ~.j'ater Wetlands
Salt water wetlands are areas with moist soil and high saline levels.
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50 Salt Grassland:Elymus dominated grassland in areas of tidal influence.
Usually found at edge of normal high water in sandy soil.Normally this
type is ~ound in areas where the shoreline gradient is relatively steep,
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usually found as a belt of grass along the shore.
51 Low shrub:Myrica dominated shrubland located on "tidal flats.~ater
level is usually fluctuating seasonally.In areas that are more
continuously wet,sedge replaces Myrica .
••52 =Tidal Marsh:Usually found in areas with many shallow lakes and little
topographic relief (within tidal influence).Vegetation is dominated by
various sedges.Woody plants may occur on the drier sedge and peat
ridges that are common to this type.
Tall Shrubs
Taller stands of a several stemmed woody plant composed of the following
vegetation types:
60 =Alder:This type is dominated by tall (10-15 ft.)alder growing in
dense thickets with grasses,ferns)and a great variety of forbs growing
in the understory.Devil's club can be found as a dominant understory
to the alder on wetter and steeper sites.Devil's club will normally
exclude other understory vegetation.The type is found at or above
treeline.At treeline it is often found mixed with open white spruce
and cottonwood types.
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61 Alder-Willow:This type is dominated by a mixture of very large alder
and willow.This type is normally found on frequently flooded ground
such as new islands,point bars,etc.Understory is sparse but may
include Equisetur and Calamogrostis.This type is often found mixed
L CH-157 B-24
with young open cottonwood (in younger stands the cottonwood is almost
indistinguisable from the willow and alder).
Low Shrub
A low,several stemmed woody plant composed of the following vegetation
types:
62 =Willow Resin Birch:This type is dominated by either willow or resin
birch or a combination thereof.The type is often f?und in sheltered
situations at high elevations,e.g.,draws in mountainous terrain.This
type is found at and above the transition between tall shrubland and
tundra.
Grassland
Land in which grasses are the predominant vegetation.
63 =Upland Grass:This type is dominated by Calamagrostics 1 to 2 meters
tall.Fireweed and various ferns are sometimes common.This type is
nost often found as an understory in the more open forest types and
woodland areas where it is commonly associated with alder patches.This
type can also be found unassociated with other types along small
streams.
Tundra
An area where the mean monthly temperature is below freezing.In the
summer,only mosses,lichens and some flowering plants appear,while the cold
of winter make normal tree growth impossible,allowing only stunted willows,
birches,etc.
64 =Sedge-Grass:This type is found above treeline on rel~tively flat,wet
areas.Vegetation consists almost entirely of various wet sedges.
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[65 Herbaceous:This type is found above treeline and is almost always
found mixed with and above shrub tundra.The variety of species found
in this type is immense,consisting mainly of various grasses and forbs.
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Soil varies in depth and may be intermixed with rockoutcroppings.
Vegetation may not be continuous.
66 =Shrub:This type is dominated by dwarf arctic birch and other shrubs
along with various short grasses and a large number of forbs.This type
is almost always found mixed with and below herbacious tundra.Density
of the shrubs found in this type varies considerably and may often
appear quite patchy.
67 =Mat and Cushion:This type is dominated by such plants as dryas,
crowberry,bearberry,sedge,grass,lichen and other 1;'ooted forbs.
Climatic conditions are extreme at the elevation where this type is
found.Vegetation cover may be complete (closed mat cushion)or
relatively sparse (scattered mat cushion)with a large percentage of the
vegetation being lichen.This type is often mixed with rock.
Freshwater Wetlands
An area of moist soil saturated with freshwater and containing the
following vegetation:
68 =Sphagnum Bog:Cover is dominated by varying amounts of sedge,
equisetum,and moss (especially sphagnum).This type is usually found
as a floating mat over several feet of water or as a thick mat directly
over saturated or frozen soil.Shrubs and stunted trees (if present)
may be found on drier peat ridges.This type is similar to tidal marsh
except that shallow lakes are less common,the peat ridges form a more
CH-157 B-26
continuous and regular patterns and the type is found inland beyond
ti~al reach.Usually found as a pure type.
69 =Sphagnum-Shrub Bog:Vegetation of this type is dominated by a thick,
moss mat (sphagnum)and/or sedge tussocks.Grass,ericaceous shrubs,
salix,blueberry and cranberry may also be present.Ground water level
usually varies seasonally but this type is generally not as wet as
sphagnum bog.This type is usually mixed with open stands of short
black spruce.Many other types may also be found in close association
with sphagnum shrub bog.The associated types are typically found on
glacial moraines and eskers within the bog·area.
Cultural Features
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Han related features associated with the following:
Cultural Influences:May be broadly defined as land that has been
obviously aff~cted by human activity.Includes agricultural land,urban
areas,and land developed to support or provide services to agricultural
and urban land.This "type"may indeed be vegetated but vegetation that
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is present may not be natural in either composition or spacing.
Barren [
80
Largely unvegetated tracts of land.
~lud Flats:Confined to tidal areas (Cook Inlet)and the mouths of major
rivers (Susitna,Knik).This "type"may appear vegetated on C.I.R.and
color photography or from the air;however,the "vegetation"is usually
algal blooms and/or other sea plants.Mud flats are usually well
pa tterned with ripple marks or water drainage patterns •...They are
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normally submersed during high tide.They may be used as resting and
feeding areas by waterfowl.
81 =Rock:Exposed bedrock and scree commonly found along with mat cushion
tundra at high elevations.This "type"is also used to describe large
landslide areas,some morainal features,and other natural barren areas.
Permanent Snow and Ice
An area tvhere snow and ice is present throughout the y~ar.
82 Snotvfield High elevation snow accumulation areas.Appears to bea
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permanent or nearly year round part of the landscape.May be found as
small pockets on slopes protected from the sun,on lee'slopes 'or in -
gulleys.Usually found over bare ground.May also be found as large
snow accumulation areas at very high elevations.Often mixed with mat-
cushion tundra and rock.
83 =Glacier:Includes both ice fields and glaciers.Usually found covering
several square miles.Considered,a permanent part of landscape •.To
differentiate 83 from 82 note 83 covers much larger areas;crevasses,
moraines and other glacial features are usually present.
Hater
Areas consisting of the following water bodies:
96 Streams and rivers at least 165 feet wide,but less than 600 feet wide
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92
97
Lakes greater than 40 ac.(census water)
Lakes at least 10 ac.,but less than 40 ac.
Rivers greater than 1/8 mile (census water)
CH-IS7 B-28
UPPER SUSITNA
APPENDIX C
GRID MULTI-VARIABLE FILE
C-1
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POSITION
1
2
3
4.
5
6
7
8
9
10
11
12
13
14
15
16
17
18
UPPER SUSITNA
AREAS A,B,D &E AND AREA C
GRID MULTIVARIABLE FILES
DESCRIPTION
Row
Column
Map Module Nmber
Unique Terrain Unit Number
-Emply Position -
Terrain Unit Polygon Number
Slope
Physiographic Division/Landform*
Surficial/Bedrock Geology*
-Emply Position -
Primary/Secondary Vegetation*
TertiarY/Quaternary Vegetation*
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*Indicates the position has been packed for storage efficiency.
[CH-140 C-2
DESCRIPTION OF PACKED VARIABLES
POSITION
10
11
17
18
CH-14C
TOTAL II
OF DIGITS
4
3
4
4
RANGE
4-4
1-3
3-3
1-2
3-4
1-2
3-4
1-2
C-3
DESCRIPTION
Physiographic Division
Landform
Surficial Geology
Bedrock Geology
Primary Vegetation
Secondary Vegetation
Tertiary Vegetation
Quaternary Vegetation
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6
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maximum x coordinate =443467.430
minimum x coordinate 338823.2375
minimum ycoordinate =525950.1035
The grid cell is 40 acres or 402.336m/side.
For GRIPS 402.336/3 =134.1129768m/si~e
3922.694352
356479.258
ALAS¥.A VIII
UPPER SUSITNA
GRID ORIGIN -AREAS A,E,D &E
6,500,OOOm subtracted from the vertical coordinate.
Vertical Shift
minimum y coordinate
GRIPS
unf zone 6
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GRDPST
Output number of rows 1266/3 =422
output number of columns 783/3 =261
REGISTRATION TO OTHER GRID FILES
Row 1 of ALARN I MVF Rml1 82 of this MVF
Column 1 of this HVF =Column 7 of AL.,./\RH I HVF
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Horizontal Shift
Haximum Row
Haximum Column
=-2525.401588
1266
=783
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CH-140 C-4
UTN zone 6 -6,500,000m subtracted froe the vertical coordinate
The grid cell size is 40 acres or 402.336m/side
For GRJPS 402.336/3 =134.1129768m/side
maximum x coordinate 533718.805
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,ALASKA VIII
UPPER SUSITNA
GRID ORJGIN -AREA C
=3253.699224Verticalshift
minimum y coordinate =436229.1755
minimum y co~rdinate ~386963.070
minimum x coordinate =486480.5495
GRIPS
REGISTRATION to other GRID files
Row 1 =Row 223 of Areas A.B,D &E
Output number of rows 369/3 =123 rows
354
=369
=-3626.393569
Output number of columns 354/3 =118 rows
Column 1 =Column 367 of Areas A.B,D &E
Naximum row
Haximum column
Horizontal shift
GRDPST
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CH-140 C-5 L
CH-170
APPENDIX D
UPPER SUSITNA
VEGETATION STATISTICS
D-1
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -ANCHO~~GE D5
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
5 34.2 67 Tundra -Mat and Cushion7928.4 67
----------
962.6 67
4 113.9 81 Rock
6 68.1 81
9 566.3 81
10 734.2 81
12 82.3 81
13 95.6 81
----------
1,660.5 81
2 164.8 83 Glacier
3 8,201.0 83
8 441.2 83
11 701.8 83
14 9.1 83
----------
9,517.9 83
==========
12,140.9
D-2
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -ANCHORAGE D6
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
12 180.0 24 Closed Deciduous Mixed 7 Medium-aged
9 5,743.4 60 Tall Shrub -Alder
8 5 7 908.5 65 Tundra -Herbacious
17 260.4 65
.18 2~913.2 65
23 112.4 65
25 184.7 65
27 389.5 65
33 118.9 65
---------
9,887.5 65
3 204.6 67 Tundra -Mat and Cushion
5 8,198.1 67
7 9,974.3 67
11 141.3 67
20 19,859.1 67
43 200.0 67
45 52.1 67
----------
38,629.4 67
19 152.0 80 Mud Flats
22 243.3 81 Rock
26 250.0 81
28 97.2 81
29 110.3 81
30 85.7 81
34 290.7 81
----------
1,077 .2 81
10 67.4 82 SnQtvfield
39 327.4 82
----------
394.8 82
2 455.0 83 Glacier
D-3
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PAGE 2
ALASKA SUSITNA RlVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -ANCHORAGE D6
POLYGON TOTAL NUMERIC ALPHA
1I."UMBER ACRES CODE CODE
4 1)660.0 83 Glacier
6 1)560.4 83
13 265.6 83
14 102.6 83
15 237.7 83
16 1)048.7 83
21 34.3 83
24 364.2 83
31 609.9 83
32 261.0 83
35 1)121.8 83
36 790.5 83
37 73.9 83
38 1)118.2 83
40 58.7 83
42 1)205.5 83
44·542.2 83
46 116.5 83
47 771.7 83
---------
12)398.4 83
41 44.2 91 Lakes greater than 40 acres
==========
68)507.1
D-4
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -~~CHORAGE D7
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
5 574.7 24 Closed Deciduous Mixed~Medium-aged
15 52.1 31 Open White Spruce~Short
2 404.4-60 Tall Shrub -Alder
6 3~766.7 60
9 1l0.9 60
----------
4~282.0 60
16 141.3 61 Tall Shrub -Alder-WilloW'
8 237.8 62 Low Shrub -Willow Resin Birch
18 54.7 62
----------
292.6 62
3 131.3 65 Tundra -Herbacious
7 1~347.4 65
11 724.9 65
12 1~455.5 65
13 895.8 65
17 479.3 65
19 3~097.6 65
20 816.6 65
23 357.5 65
----------
9~305.8 65
4 58.9 67 Tundra -Mat and Cushion
10 9,122.2 67
21 7,287.4 67
----------
16~468.5 67
14 66.1 68 Freshwater Wetland -Sphagnum Bog
22 435.1 81 Rock
24 235.0 81
25 453.7 81
26 242.7 81
D-S
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ALASKA SUSITNA RIVERBASIN
"UPPER SUSITNA SUBBASIN
VEGETATION"BY POLYGON -ANCHORAGE D7
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
27 238.5 81 Rock
28 446.5 81---_._----
2,051.6 81
==========
33,234.7
PAGE 2
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -ANCHO~~GE D8
POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
3 143.7 31
5 370.8 31
----------
514.5 31
2 749.2 60
8 7.0 62
4 128.8 64
6 145.3 64
7 40.9 64
----------
315.0 64
==========
1)585.7
ALPHA
CODE
Open White Spruce)Short
Tall Shrub-Alder
Low Shrub -Willow Resin Birch
Tundra -Sedge Grass
D-7
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ALASKA SUSITNA RIVERBASIN
.UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -GULKANA AS
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POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
2 135.5 25
5 257.9 25
----------
393.4 25
3 3)402.1 33
7 12)514.2 43
6 605.7 62
8 165.0 62--_...._-----
770.7 62
4 39.4 91
=========-=
17 )119.8
ALPHA
CODE
Closed White Spruce)Ta1l
Open White Spruce)Tall
Open Black Spruce)Short
Low Shrub -Willow Resin Birch
Lakes greater than 40 acres
D-8
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -GUL~~NA A6
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
13 1,001.4 25 Closed White Spruce,Tall
21 124.6 29 Closed CottonW'ood,Old
33 91.0 29
---------
215.7 29
2 122.8 33 Open lfhite Spruce,Tall
4 125.0 33
8 301.6 33
11 17,025.6 33 .
19 114.3 33
22 328.7 33
29 385.9 33
45 324.1 33
50 227.8 33
53 257.9 33
56 1,565.2 33
57 141.1 33
59 1,220.3 33
69 228.3 33
70 71.2 33
----------
22,439.8 33
10 4,743.8 43 Open Black Spruce,Short
14 1,850.7 43
27 298.3 43
31 494.0 43
37 8,482.8 43
----------
15,869.6 43
3 8,947.3 62 LoW'Shrub -WilloW'Resin Birch
6 154.7 62
7 20.0 62
15 17,568.3 62
26 1,075.3 62
43 2,173.4 62
49 33.7 62
58 2,483.2 62
D-9
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D-IO
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -GULKANA A6
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
63 66.3 91 Lakes greater than 40 acres
65 1,130.0 91
67 54.0 91
71 43.8 91 .
----------
3,038.4 91
========:::1:=
82,061.2
D-11
PAGE 3
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -GULK-~NA B5
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b
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[
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POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
31 897.1 25
41 108.9 25
43 48.3 25
----------
1,054.3 25
25 294.8 33
27 972.8 33
34 239.8 33
37 591.7 33
38 454.9 33
---------
2,554.1 33
14 191.5 43
15 83.7 43
16 207.5 43
28 .2,535.3 43
----------
3,018.0 43
2 25,694.7 62
32 76.3 62
----------
25,771.0 62
39 55.9 69
3 80.8 91
4 4.2 91
5 42.0 91
6·42.0 91
7 384.8 91
8 89.4 91
9 103.3 91
10 72.5 91
11 550.2 91
12 82.1 91
13 72.1 91
17 59.4 91
18 118.4 91
ALPHA
CODE
Closed White Spruce,Tall
Open White Spruce,Tall
Open Black Spruce,Short
Low Shrub -Willow Resin Birch
Freshwater Wetland -Sphagnum-Shrub Bog
Lakes greater than 40 acres
D-12
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -GULK-~NA B5
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
19 330.2 91 Lakes greater than 40 acres
20 79.3 91
21 .19.9 91
22 351.3 91
23 2,599.7 91
24 96.1 91
26 79.1 91
29 136.4 91
30 149.4 91
33 85.2 91
35 53.5 91
36 152.1 91
40 103.4 91
42 65.0 91
----------
6,001.8 91
==========
38,455.0
D-13
PAGE 2
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -GULKANA B6
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
14 472.1 25 Closed White Spruce,Tall
19 203.9 25
61 179.9 25
98 104.0 25
108 121.3 25
----------
1,081.2 25
49 12,655.6 33 Open White Spruce,Tall
53 413.1 33
17 72.7 33
85 95.9 33
91 175.7 33
109 102.3 33
----------
13,515.4 33
22 226.4 43 Open Black Spruce,Short
26 1,057.0 43
28 1,559.7 43
38 174.6 '43
56 129.9 43
57 179.7 43
64 135.2 43
74 23.2 43
76 73.4 43
80 37.5 43
84 400.8 43
95 1,879.7 43
103 406.6 43
----------
6,283.7 43
2 82,874.8 62 Low Shrub -Willow Resin Birch
18 27.7 62
55 393.8 62
62 70.6 62
72 6,674.5 62
107 43.1 62
----------
90,084.6 62
.D-14
PAGE 2
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -GULKANA B6
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE 'CODE
5 281.2 65 Tundra -Herbacious,
11 218.5 65
12 690.8 65
13 155.0 65
17 397.2 65
36 506.1 ·65
45 824.4 65
---...;------
3~073.2 65
7 22~637.1 66 Tundra -Shrub
30 ,7~759.0 66
----------
3·0~396.l 66
31 189.3 69 Freshwater Wetland -Sphagnum-Shrub Bog
34 354.6 69
35 125.9 69
37 81.2 69
50 61.3 69
58 75.5 69
59 80.9 69
65 138.6 69
68 51.6 69
70 86.0 69
73 206.0 69
75 318.0 69
81 145.8 69 .
88 864.3 69
92 777.0 69
94 83.0 69
97 72.4 69
99 130.3 69
100 90.0 69
102 97.8 69
----------
4,029.3 69
3 9,687.1 91 Lakes greater than 40 acres
4 2.2 91
6 17.2 91
D-15
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[PAGE 3
ALASKA SUSITNA RIVERBASIN
[UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -GULKANA B6
[POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
8 7.9 91 Lakes greater than 40 acres
[9 139.8 91
10 138.8 91
15 183.2 91
[16 184.2 91
20 93.0 91
21 70.9 91
r 23 63.6 91
24 227.9 91
L 25 23.5 91
27 906.5 91
[29 620.6 91
32 75.3 91
33 71.2 91
L 39 621.1 -91
40 86.6 91·
41 44.8 91
B 42 12,234.8 91
43 71.2 91
44 55.4 91
46 50.7 91
C 47 54.7 91
48 61.8 91
51 45.6 91
C 52 146.7 91
54 48.7 91
60 1,225.2 91
C 63 328.4 91
66 224.8 91
67 77.3 91
69 184.4 91
[71 11.2 91
78 124.1 91
79 100.6 91
[82 122.7 91
83 176.6 91
86 261.3 91
r-87 .78.4 91
L 89 75.2 91
90 111.1 91
93 42.7 91r-
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[D-16
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -GULKANA B6
TOTAL NUMERIC
ACRES CODE
POLYGON
NUMBER
96
101
104
105
106
110
111
102.8
92.8
17"4.7
73.3
34.5
5.9
4.7
29,667.6
==========
178,131.1
91
91
91
91
91
91
91
91
1\
ALPHA
CODE
Lakes greater than 40 acres
D-17
PAGE 4
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -GULKANA C5
[
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POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
2 4,677.2 62
6 124.8 62
----------
4,802.0 62
3 53.3 91
4 176.7 91
5 486.5 91
7 56.9 91
8 17.4 91
----------
790.8 91
==========
5,592.8
ALPHA
CODE
Low Shrub -Willow Resin Birch
Lakes greater than 40 acres
D-18
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -GULKANA C6
POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
17 356.8 43
2 11,504.8 62
5 13,709.9 62
19 10.4 62---_....._-----
25,225.1 62
3 185.3 91
4 102.6 91
6 942.4 91
7 67.8 91
8 95.4 91
9 114.8 91
10 263.7 91
11 78.6 91
12 39.8 91
13 109.1 91
14 250.6 91
15 211.0 91
16 8.0 91
18 37.1 91
----------
2,506.2 91
=========~
28,088.1
ALPHA
CODE
Open Black Spruce,Short
Low Shrub -Willow Resin Birch
Lakes greater than 40 acres
D-19
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -HEALY A4
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
4 25.1 61 Tall Shrub -Alder-Willow
3 2,486.2 62 Low Shrub -Willow Resin Birch
6 74.6 62
----------
2,560.9 62
5 2,805.5 65 Tundra -Herbacious
8 174.8 65
10 126.4 65
11 12,021.6 65
19 405.6 65
----------
15,533.9 65
2 59.4 67 Tundra -Hat and Cushion
9 11,125.2 ·67
13 16,465.3 67
17 535.5 67
18 187.1 67
----------
28,372.4 67
12 162.4 81 Rock
14 128.9 81
15 257.9 81
----------
549.1 81
16 201.9 83 .Glacier
20 179.4 83
21 222.1 83
22 411.9 83
23 125.7 83
24 170.4 83
----------
1,311.4 83
7 8.9 91 Lakes greater than 40 acres
====~:====
48,361.6
D-20
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON ~HEALY AS
POLYGON TOTAL .NUMERIC ALPHA
NUMBER ACRES .CODE CODE
22 882.1 21 Closed Hhite Spruce,Short
23 102.0 21
30 880.5 21
35 156.4 21
38 1,281.1 21
41 102.9 21
50 251.7 21
52 744.7 21
-----..._---
4,401.4 21
74 201.1 25 Closed ~fhite Spruce,Tall
2 1,113.0 60 Tall Shrub -Alder
4 396:6 60
6 20,82240 60
17 5,166.2 60
43 171.4 60
45 9,327.5 60
87 29.1 60
91 295.2 60
----------
37,321.0 60
3 1,948.2 61 Tall Shrub -Alder-Willow
7 34.3 61
16 222.2 61
29 188.7 61
32 1,656.3 61
46 521.5 61
72 176.8 61
----------
4,747.9 61
8 145.7 62 Low Shrub -Willow Resin Birch
9 21.4 62
47 1,98100 62
60 87.3 62
81 197.1 62
89 469.1 62
----------
2,901.7 62
D-21
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -HEALY A5
POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
55 131.4 67
58 4,635.4 67
61 8,139.9 67
63 98.4 67
75 2,674.9 67
76 240.5 67
80 777.3 67
84 5,637.1 67
85 157.4 67
86 510.0 67
----------
41,823.9 67
25 151.8 69
36 296.1 69
37 114.1 69
59 312.1 69
--------
874.1 69
5 121.9 70
21 112.6 70
34 99.8·70
42 84.9 70
----------
419.2 70
27 215.7 80
28 24,674.8 81
73 4,439.2 81
78 5,646.5 81
92 703.3 81
93 158.4 81
94 42.7 81
----------
35,664.9 81
44 331.0 83
62 285.5 83
64 131.6 83
PAGE
ALPHA
CODE
Tundra -Mat and Cushion
Freshwater Wetland -Sphagnum-Shrub Bog
Cultural Influences
Mud Flats
Rock
Glacier
D-23
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -HEALY AS
PAGE 4
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POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
67 250.2 83
----------
998.3 83
88 135.2 91
==========
156,238.5
ALPHA
CODE
Glacier
Lakes greater than 40 acres
D-24
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -HEALY A6
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
7 23.2 21 Closed White Spruce,Short
10 407.4 21
12 2,969.2 21
16 438.2 21
22 727.3 21
59 51.9 21
60 182.1 21
63 766.7 21
----------
5,566.0 21
37 310.7 25 Closed \rhite Spruce,Tall
79 16.9 28 Closed Cottonwood,Medium-aged
6 814.5 31 Open \rhite'Spruce,Short
23 313.6 31
33.104.6 31
----------
1,232.7 31
47 238.2 32 Open Deciduous Mixed,Medium-aged
66 289.3 32
----------
527.5 32
2 457.3 60 Tall Shrub -Alder
5 1,444.7 60
11 29,782.7 60
21 84.9 60
27 1,653.6 60
28 366.3 60
51 1,245.6 60
71 88.8 60
73 314.2 60
75 115.0 60
----------
35,553.1 60
4 57.0 61 Tall Shrub -Alder-Willow
14 1,941.7 61
D-25
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ALASKA SUSITNA RlVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -HEALY A6
[
[
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[
[
[
rl.~.
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b
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POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
38 32.9 61
40 148'.0 61
48 88.3 61
64 221.1 61
70 155.2 61
80 14.8 61
---------
2,659.1 61
44 44.6 63
65 50.0 64
69 172.9 64
72 74.7 64
77 81.3 64
----------
378.9 64
8 21.9 65
9 96.7 65
17 194.3 65
18 441.8 65
19 654.1 65
25 136.2 65
29 142.9 65
34 55.4 65
49 25.5 65
50 6,113.3 65
52 2,768.3 65
56 401.7 65
57 72.7 65
78 110.5 65
----------
11)235.4 65
61 1)243.1 67
76 95.9 67
----------
1)339~O 67
20 114.7 69
PAGE
ALPHA
CODE
Tall Shrub -Alder-Willow
Grassland
Tundra -Sedge Grass
Tundra -Herbacious
Tundra -Mat and Cushion
Freshwater Wetland -Sphagnum-Shrub Bog.
D-26
2
PAGE
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -HEALY A6
3
r
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POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
26 155.8 69
30 117.9 69
32 51.1 69
35 128.7 69
36 411.3 69
41 92.7 69
42 53.9 69
43 134.8 69
45 52.8 69
46 103.9 69
55 98.6 69
68 110.9 69
----------
1)626.9 69
3 660.6 80
24 626.3 80
54 61.9 80
67 214.5 80
----------
1)563.2 80
53 854.6 81
58 63.6 81
62 262.2 81
---------
1)180.4 81
74 112.9 83
13 137.3 91
15 119.1 91
31 45.3 91
39 74.4 91
----------
376.1 91
===========
63)723.4
ALPHA
CODE
Freshwater Wetland -Sphagnum-Shrub Bog
Hud Flats
Rock
Glacier
Lakes greater than 40 acres
D-27
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ALAS~~SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -HEALY B4
r
L
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POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
4 446.9 61
6 217.8 61
9 36.9 61
----------
701.6 61
3 4,387.2 62
7 270.4 62
10 19.6 62
----------
4,677.1 62
2 6)025.3 65
5 3)405.8 65
----------
9,431.1 65
11 10.6 67
8 108.9 91
=======:::i==
14)929.3
ALPHA
CODE
Tall Shrub -Alder-Willow
Low Shrub -Willow Resin Birch
Tundra -Herbacious
Tundra -Hat and Cushion
Lakes greater than 40 acres
D-28
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -HEALY B5
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
2 1,089.5 60 Tall Shrub -Alder
4 3,876.9 60
8 1,210.4 60
14 371.1 60
15 1,061.1 60
24 25.4 60
25 37.3 60
----------
7,671.7 60
5 170.3 61 Tall Shrub -Alder-Willow
6 128.9 61
12 1,294.3 61
21 49.9 61
---------
1,643.3 61
3 3,805.7 62 Low Shrub -Willow Resin Birch
9 585.6 62
11 108.8 62
13 2,281.5 62
16 949.3 62
20 59.0 62
----------
7,78.9.9 62
7 1,613.1 65 Tundra -Herbacious
17 264.5 65
26 4.0 65
---------
1,881.6 65
18 931.4 67 Tundra -Mat and Cushion
23 399.7 67
----------
1,331.1 67
19 148.8 69 Freshwater Wetland -Sphagnum-Shrub Bog
10 34.5 70 Cultural Influences
22 84.3 70
----------
118.8 70
==========
20,585.3
D-29
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA Cl
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POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
5 1,702.0 31
9 1,051.9 32
12 36.6 32
14 26.5 32
----------
·1,115.0 32
7 154.8 60
10 217.6 60
----------
372.4 60
3 127.8 61
4 109.1 61
8 40.8 61
13 28.7 61
15 3.6 61
----------
310.0 61
6 212.9 62
11 153.3 62
----------
366~2 62
2 588.6 97
==========
I
4,454.2
ALPHA
CODE
Open White Spruce,Short
Open Deciduous Mixed,Medium-aged
Tall Shrub -Alder
Tall Shrub -Alder-Willow
Low Shrub -Willow Resin Birch
Rivers greater than 1/8 mile
D-30
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS Al
POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
13 515.2 33
6 165.6 43
7 174,,3 43
----------
339.9 43
2 16,738.5 62
3 6,641.8 65
8 5,731.0 65
9 775.0 65
----------
13,147.9 65
4 605.3 66
5 .720.8 66
12 3,942.5 66
----------
5,268.6 66
10 111.1 69
11 77.4 69
----------
1~.8 .4 69
14 4.1 91
::=::========
36,202.6
ALPHA
CODE
Open Hhfte Spruce,Tall
Open Black Spruce,Short
Low Shrub -Willow Resin Birch
Tundra -Herbacious
Tundra -Shrub
Freshwater Wetland -Sphagnum-Shrub Bog
Lakes greater than 40 acres
D-31
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS A3
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
22 62.4 91 Lakes greater than 40 acres
27 64.0 91
28 37.7 91
----------
164.1 91
===========
34,680.3
D-33
PAGE 2
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN l'VEGETATION BY POLYGON -TALKEETNA MOUNTAINS A4
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE l:19 1,070.7 81 Rock
20 181.8 81 r24210.7 81
28 127.1 81
32 3,608.3 81 l~36 1,601.8 81
43 1,276.1 81
52 320.7 81
F59212.1 81
60.11.9 81 \.-,
62 51.3 81
67 228.1 81 [70 480.6 81 L71403.1 81
76 205.6 81
L79237.1 81
82 71.2 81
84 4,236.4 81 r89365.5 81
91 282.3 81 \'cc'
93 74.8 81
96 86.9 81 C'101 98.1 81
-,102 304.5 81
103 80.4 81 [----------
18,635.9 81
26 141.9 82 Snowfield C2788.5 82 L_.1
29 61.7 82
33 122.1 82 L3962.1 82
41 123.8 82
51 147.4 82 [54 5,912.7 82
69 197.6 82
73 1,427.4 82 r·83 281.3 82 L87678.1 82
92 193.2 82
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS A4
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
100 203.0 82 Snowfield
----------
9,640.7 82
5 3,032.9 83 Glacier
7 8,207.9 83
11 494.8 83
15 121.4 83
16 133.2 83
18 518.6 83
21 1,172.4 83
22 393.0 83
23 155.1 83
25 1,261.4 83
31 174.9 83
34 590.8 83
38 9,255.2 83
44 143.8 83
46 6,406.1 83
49 503.4 83
55 282.4 83
56 11,498.6 83
57 455.1 83
58 1,003.1 83
63 128.2 83
65 326.4 83
·66 189.8 83
68 143.7 83
72 305.9 83
74 391.3 83
77 1,161.4 83
81 1,713.6 83
86 12,359.2 83
88 5,432.7 83
90 222.4 83
95 333.3 83
99 1,006.9 83
105 45.3 83
----------
69,564.0 83
D-36
PAGE 3
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS A4
TOTAL NUMERIC
ACRES CODE
POLYGON
NUMBER
13 90.6
===========
172,378.6
91
ALPHA
CODE
Lakes greater than 40 acres
D-37
PAGE 4
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA HOUNTAINS AS
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES .CODE CODE
6 2,883.5 24 Closed Deciduous Mixed,Medium-aged
11 320.0 24
50 2,650.9 24
----------
5,854.4 24
55 ·119.0 41 Closed Black Spruce,Short
8 2,421.7 60 Tall Shrub -Alder
12 76.7 60
16 1,849.7 60
18 527.0 60
24 397.4 60
25 83.2 60
28 3,712.5 60
43 5,059.3 60
54 2,264.4 60
----------
16,392.0 60
17 85.8 61 Tall Shrub -Alder-Willow
3 93.1 65 Tundra ~Herbacious
5 785.5 65
9 49,541.8 65
13 129.1 65
14 133.0 65
15 118.3 65
19 llO.1 65
20 75.5 65
22 251.7 65
30 31,044.9 65
36 445.3 65
49 407.9 65
51 240.8 65
52 160.8 65
56 289.8 65
57 62.4 65
----------
83,890.0 65
Ir38
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS A5
POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
2 11.9 67
4 6,897.2 67
10 52,010.7 67
21 5,594'.2 67
----------
64,514.0 67
53 30.9 69
7 1,268.1 80
40 104.6 82
26 107.9 83
27 780.8 83
31 335.1 83
32 182.7 83
33 114.8 83
34 2-33.0 83
35 1,148.6 83
37 1,824.7 83
38 73.0 83
39 368.0 83
41 162.3 83
42 310.2 83
44 904.8 83
45 71.1 83
46 90.5 83
47 97.4 83
48 236.3 83
----------
7,041.2 83
23 103.0 91
29 63.4 91
----------
166.3 91
==========
179,466.3
PAGE
ALPHA
CODE
Tundra -Mat and Cushion
Freshwater Wetland -Sphagnum-Shrub Bog
Mud Flats
Snowfield·
Glacier
Lakes greater than 40 acres
D-39
2
F
L
c
L
[
L
[
C
L
[
[
f'
L
['
L
L
[
[
~
[
[
[
L
[
r
L
[
6
C
C
C
[
[
I:
L
r
L
[
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS A6
POLYGON .TOTAL NUMERIC ALPHA
NUMBER ACRES CODE.CODE
40 112.3 22 Closed Deciduous Mixed,Young
36 1,588.8 24 Closed Deciduous Mixed,Medium-aged
46 102.2 24
----------
1,691.0 24
18 1,606.6 25 Closed l~ite Spruce,Tall
30 129.9 25
----------
1,736.5 25
10 211.0 26 Closed Deciduous Mixed,Old
7 134.1 31 Open White Spruce,Short
22 44.1 41 Closed Black Spruce,Short
24 6.0 41
31 42.6 41
33 41.5 41
34 81.1 41
35 78.5 41
37 49.9 41
41 579.4 41
43 103.5 41
45 91.1 41
----------
1,117.7 41
3 7,849.6 60 Tall Shrub -Alder
12 25,856.4 60
14 51.6 60
23 15.7 60
29 293.2 60
32 4,409.6 60
48 3,699.5 60
----------
42,175.5 60
8 26.4 ,~Tall Shrub -Alder-WillowOl.
11 972.2 61
[
L
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f.3.~.....b
b
r-'
-,
[
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L
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS Bl
[
[
[
[~
[
f'
L
rL~
[
L
[
[
[
t
C
[
[
r-
L
POLYGON TOTAL NUMERIC
~'UMBER ACRES CODE
5 66.8 43
21 162.1 43
22 97.4 43
----------
326.4 43
2 38~799.2 62
19 950.0 65
20 20~798.9 65
---------
21~748.9 65
15 285.6 66
16 330.6 66
17 8~509.7 66
18 4~784.5 66
----------
13~910.5 66
3 2 t 206.6 69
24 1~026.9 69
25 468.7 69
----------
3~702.2 69
4 192.6 91
6 10.2 91
7 66.9 91
8 76.6 91
9 157.2 91
10 308.2 91
11 182.7 91
12 154.3 91
13 53.9 91
14 71.6 91
23 44.9 91
26 23.0 91
27 48.3 91
----------
1 t 390.2 91
==========
79 t 877.4
ALPHA
CODE
Open Black SprucetShort
Low Shrub -Willow Resin Birch
Tundra -Herbacious
Tundra -Shrub
Freshwater Wetland -Sphagnum-Shrub Bog
Lakes greater than 40 acres
D-42
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS B3
691.4 60
TOTAL NUMERIC
ACRES CODE
Open White Spruce~Short
ALPHA
CODE
Tall Shrub -Alder
Tall Shrub -Alder-Willow
Low Shrub -Willow Resin Birch
31
62
62
62
61
60
60
303.4
50.5
640.9
57.3
1~788.0
60.4
99.8
9
19
27
18
16
21
26
POLYGON
NUMBER
62 C
L
3 407.1
4 78.1
5 1~680.5
6 16~085.3
8 595.6
11 106.4
15 254.8
23 3~583.2
35 1~397.7
36 43.7.7
39 146.8
42 17.6
24,790.8
38 463.8
2 58~542.0
25 739.7
30 108.8
31 29.9
34 1,609.4
65
65
65
65
65
65
65
65
65
65
65
65
65
66
67
67
67
67
67
Tundra -Herbacious
Tundra -Shrub
Tundra -Mat and Cushion
61,029.8 67
13 856.0 80 Hud Flats
D-43 l
[
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[
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[
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G
[
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I'
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L D-44
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS B4
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
15 59.4 25 Closed lfuite Spruce,Tall
3 235.8 60 Tall Shrub -Alder
21 114.8 60
24 832.5 60
32 41.3 60
34 139.4 60
44 147.5 60
---------
l,511.2 60
19 47.3 61 Tall Shrub -Alder-Willow
43 70.5 61
----------
117.8 61
5 247.1 62 Low Shrub -Willow Resin Birch
6 5,702.4 62
8 4,685.4 62
23 1,179.8 62
----------
11,814.7 62
41 270.5 64 Tundra -Sedge Grass
2 3)321.2 65 Tundra -Herbacious
4 7,437.4 65
9 5,589.0 65
14 5,535.3 65
17 17.1 65
18 18,898.8 65
20 92.0 65
25 3,734.9 65
28 50.0 65
29 1,320.4 65
31 318.8 65
33 104.5 65
37 201.2 65
39 326.6 65
42 176.6 65
46 136.1 65
D-45
[
L
[
[
[
l
L
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rL
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PAGE 2
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUB~ASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS B4
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
47 75.1 65 Tundra -Herbacious
50 432.7 65
----------
47,767.6 65
36 249.7 66 Tundra -Shrub
10 1,006.0 67 Tundra -Mat and Cushion
11 67,135.1 67
12 717.8 67
13 4,292.5 67
16 491.1 67
22 329.3 67
27 14,379.2 67
30 16,058.4 67
35 184.9 67
38 416.7 67
45 3,379.5 67
48 3,703.8 67
49 1,557.6 67
----------
113,651.8 67
7 2,2q5.8 80 Mud Flats
40 301.7 83 Glacier
51 53.3 83
52 68.5 83
---------
423.6 83
26 73.3 97 Rivers greater than 1/8 mile
=======-===
178,145.3
D-46
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS B5
525.7 22
12,782.1 24
[
LOpenl~ite Spruce,Short
Closed Deciduous Mixed,Medium-aged
ALPHA
CODE
Closed Deciduous Mixed)Young
31
31
24
24
24
24
22
22
22
380.2
73.7
71.8
TOTAL NUMERIC
ACRES CODE
6,820.4
4,802.5
346.4
812.7
8 16.4
9 816.8
20
54
66
67
26
36
76
POLYGON
NUMBER
833.2
15 1,632.0
48 349.8
1,981.8
25 202.5
29 106.0
32 55.4
39 297.5
47 227.5
53 303.1
68 59.2
69 101.1
72 118.7
75 69.6
79 57.7
1,598.5
41 47.5
31
32
32
32
41
41
41
41
41
41
41
41
41
41
41
41
42
Open Deciduous Mixed,Medium-aged
Closed Black Spruce)Short
Closed Black Spruce,Tall
[
[
[
fJ
b
~
[
L
4 5)932.0
10 4,185.9
60
60
Tall Shrub -Alder r'
L
I
L
D-47 [
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L
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E
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[
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1-
L
r-
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L
PAGE 2
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS B5
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
34 27,595.9 60 Tall Shrub -Alder
52 20.6 60
74 12.2 60
----------
37,746.6 60
28 55.5 61 Tall Shrub -Alder-Willow
33 256.7 61
35 68.9 61
64 335.8 61
70 775.3 61
----------
1,492.1 61
7 72.5 62 Low Shrub -Willow Resin Birch1211.4 62
13 2,370.3 62
24 192.7 62
30 161.2 62
38 226.4 62
----------
3,034.5 62
49 60.1 63 Grassland
2 2,078.4 65 Tundra -Herbacious
5 12.9 65
6 580.4 65
21 819.1 65
23 14,455.8 65
27 43.2 65
31 89.0 65
37 16,861.5 65
63 779.9 65
65 340.8 65
71 92.6 65
73 9,488.9 65
77 729.7 65
78 472.0 65
81 248.9 65
83 921.3 65
D-48
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS B5
POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
85 69.2 65
----------
48,083.6 65
14 166.2 66
3 1,152.6 67
11 4,597.2 67
16 28,505.2 67
17 84.1 67
18 228.7 67
19 730.6 67
22 197.4 67
42 6,788.1 67
46 2,851.5 67
56 3,601.2 67
60 18,15i.1 67
80 787.6 -67
----------
67,675.4 67
45 188.8 69
50 102.3 69
51 100.6 69
55 93.5 69
58 156.1 69
59 71.1 69
61 126.3 69
62 306.1 69
84 63.6 69
----------
1,208.6 69
82 228.3 80
40 52.5 J1
43 47.0 91
44 47.2 91
57 276.3 91
----------
423.0 91
==========
177,887.4
PAGE
ALPHA
CODE
Tundra -Herbacious
Tundra -Shrub
Tundra -Mat and Cushion
Freshwater Wetland -Sphagnum-Shrub Bog
Mud Flats
Lakes greater than 40 acres
D-49
3
[
L
[
[
[
[;
L
[
L
f
L
[
[
[ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
[VEGETATION BY POLYGON -TALKEETNA MOUNTAINS B6
POLYGON TOTAL NUMERIC ALPHA
l'."UMBER ACRES CODE CODE[8 147.5 24 Closed Deciduous Mixed,Medium-aged
11 382.6 24
[~----------
530.1 24
['2 1,059.3 60 Tall Shrub -Alder
6 15.5 60
7 349.8 60
12 728.3 60f'14 161.9 60
L..;15 12,227.9 60
----------
[14,542.8 60
9 80.7 61 Tall Shrub -Alder-Willow
r-'L 22 21.2 64 Tundra -Sedge Grass
23 12.7 64 .
----------6 34.0 64
4 3.9 65 Tundra -Herbacious
C 5 1,049.1 65
13 3,330.2 65
16 69.0 65
C 17 2,988.1 65
18 125.7 65
19 43.7 65
,--,20 43.8 65L2444.9 65
25 225.3 65
26 1,395.8 65
[27 386.8 65
28 93.2 65
29 105.1 65
L 30 98.1 65
31 216.6 65
32 56.3 65
33 62.2 65r'34 121.6 65L----------
10,459.5 65f'
I"-"
L D-50
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS B6
TOTAL NUMERIC
ACRES CODE
POLYGON
NUMBER
3
10
21
869.1
102.5
26.4
==========
26,645.1
67
80
92
ALPHA
CODE
Tundra -Mat and Cushion
Mud Flats
Lakes at least 10 acres
D-51
PAGE 2
[
[
[
f·.J~.'•.b
L
[
[
r'
L
r
L
[
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS C1
[
[
[
[
['
l-
L
rL.
[
[
~
6
[
C
[
[
r-
L
r-
L
L
POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
6 388.4 33
15 129.8 43
2 1,972.5 62
4 8,099.2 62
16 68.3 62
----------
10,140.1 62
5 505.7 69
7 197.2 69
----------
703.0 69
3 51&1 91
8 100.4 91
9 63.6 91
10 183.8 91
11 193.7 91
12-50.6 91
13 238.6 91
14 261.9 91
17 18.0 91
----------
1,161.7 91
==========
12,523.0
ALPHA
CODE
Open White Spruce,Tall
Open Black Spruce,Short
Low Shrub -Willow Resin Birch
Freshwater Wetland -Sphagnum-Shrub Bog
Lakes greater than 40 acres
D-52
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS
POLYGON
NUMBER
3
2
4
5
TOTAL NUMERIC
ACRES CODE
2,698.6 65
4,887.6 67
4,069.6 67
267.1 67
9,224.2 67
==========
11,922 ..8
ALPHA
CODE
Tundra -Herbacious
Tundra -Mat and Cushion
D-53
I~
r~
!
r:
C3 r'
[.
I ~
[
rL
I
l ...o
r:
L
[
C
[
L
~
L
L
r
L
I
L
[
[
[
[
[
[
[
['
rL..o
[
[
E
C
C
G
[
[
L
ALAS~~SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS C4
POLYGON TOTAL NiJMERIC ALPHA
NUMBER ACRES CODE CODE
57 435.9 22 Closed Deciduous Mixed,Young
12 125.1 31 Open White Spruce,Short
15 100.7 31
16 67.3 31
17 143.8 31
----------
436.9 31
4·765.6 60 Tall Shrub -Alder
14 61.1 60
21 9.2 60
25 365.9 60
30 4,956.0 60
42 4,571.6 60
65 127.6 60
----------
10,857.1 60
11 178.0 61 Tall Shrub -Alder-tfillow
29 892 .6 61
54 76.6 61
62 175.4 61
----------
1,322.6 61
3 534.2 62 Low Shrub -Willow Resin Birch
6.274.3 62
8 19,965.0 62
23 510.6 62
39 409.8 62
44 40.4 62
46 35.5 62
48 12,251.2 62
----------
34,020.9 62
10 44.6 64 Tundra -Sedge Grass
27 72.6 64
28 58.7 64
----------
175.9 64
D-54
POLYGON
NUMBER
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS c4
TOTAL NUMERIC ALPHA
ACRES CODE CODE
PAGE 2
rL
[
r~
I.
5 908.1 65
7 80.0 65
18 403.7 65
20 7,691.9 65
22 1,074.9 65
31 283.3 65
37 579.0 65
38 129.9 65
40 344.2 65
41 5,865.8 65
47 504.2 65
49 71.3 65
50 8,310.5 65
53 36.8 65
55 982.4 65
56 1,434.6 65
59 263.2.65
60 111.4 65
64 107.8 65
66 49.4 65
----------
29,232.6 65
13 855.7 66
2 5.7.3 67
19 2,411.3 67
24 1,058.4 67
26 2,743.8 67
33 101.9 67
35 1,346.3 67
36 44,987.4 67
43 564.5 67
45 612.5 67
61 227.4 67
----------
54,110.7 67
51 439.4 80
58 858.3 80
63 309.6 80
----------
1,607.3 80
Tundra -Herbacious
Tundra -Shrub
Tundra -Mat and Cushion
Mud Flats
D-55
\.
L
L
[
[
[
[
[
[
[
rL~
r-'
L
[
E
fJ
C
C
[
[
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L
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·ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS C4
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
9 904.9 91 Lakes greater than 40 acres3278.2 91
34 80.7 91
52 119.7 91
----------
1,183.6 91
==========
134,239.1
D-56
PAGE 3
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS C5
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
49 10,098.9 31 Open \-lhite Spruce,Short
26 119.6 32 Open Deciduous Mixed,Medium-aged
6 19,027.9 60 Tall Shrub -AlderIS6,141.6 60
17 663.6 60
23 99.4 60
25 1,327.4 60
45 194.1 60
47 280.1 60
52 48.3 60
57 294.2 60
60 7,162.6 60
77 89.7 60
87 16.8 60
94 641.3 60
95 217.6 60
102 12.6 60
----------
36,217 .2 60
35 210.9 61 Tall Shrub -Alder-Willow
38 50.8 61
46 1Z4.2 61
86 110.5 61
----------
496.4 61
8 25.6 62 Low Shrub -Willow Resin Birch
9 11,143.9 62
10 3,963.0 62
30 199.0 62
31 651.5 62
39 195.5 62
41 624.9 62
53 105.1 62
69 230.0 62
72 390.7 62
79 278.4 62
81 116.9 62
D-57
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L
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L~
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L
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l
C
L
L
L
I '
L
L
[
[
[PAGE 2
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
[VEGETATION BY POLYGON -TALKEETNA MOUNTAINS C5
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
r.91 282.7 62 Low Shrub -Willow Resin Birch
98 .29.4 62
100 53.7 62
/"----------
18,290.3 62
[7 611.1 64 Tundra -Sedge Grass
12 98.9 64
14 91.7 64
16 89.5 64r3295.9 64
L,_.,.;37 253.1 64
71 1,254.5 64
r 83 620.7 64
t 84 316.4 64
----------
r""3 ,431.7 64
L 5 303.5 65 Tundra -Herbacious
11 693.8 65
E 13 169.6 65
22 86.0 65
36 348.7 65
k '43 159.2 65
56 162.7 65
58 98.1 65
[59 92.2 65
61 92.4 65
62 121.6 65
65 68.6 65
C 68 1,136.9 65
70 328.5 65
76 1,038.0 65
[78 1,194.1 65
80 186.4 65
82 10.9 65
L 90 1,729.6 65
93 138.6 65
96 476.4 65
99 33.5 65I.101 34.7 65
L ----------
8,704.0 65
r
L
L D-58
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS C5
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
2 4,050.8 67 Tundra -Mat and Cushion338,294.9 67
4 101.2 67
18 5,302.2 67
19 80.4 67
20 69.2 67
24 210.7 67
27 194.6 67
28 82.2 67
29 74.9 67
33 112.5 67
34 398.3 67
48 127.1 67
50 73.6 67
63 567.4 67
66 356.1 67
67 533.5 67
73 3,882.2 67
74 860.6 67
75 8,876.2 67
85 88 •.4 67
88 2,720.9 67
89 213.6 67
92 291.6 67
97 236.9 67
----------
67,800.0 67
54 475.7 80 Mud Flats
21 65.0 91 Lakes greater than 40 acres
40 80.0 91
42 84.5 91
44 165.9 91
51 52.3 "91
55 71.5 91
64 83.6 91
----------
602.7 91
==========
146,236.7
0-59
PAGE 3
[
L
[
[
[
r
L
L
t"
I
L
I '
L
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C
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L
[
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS C6
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
3 603.3 24 Closed Deciduous Mixed,Medium-aged
13 2,816.4 24
37 79.3 24
----------
3,499.0 24
32 105.3 28 Closed Cottonwood,Medium-aged
40 172.2 28
43 90.7 28
---------
368.2 28
25 120.5 31 Open White Spruce,Short"
30 3,429.0 31
59 56.1 31
---------
3,605.6 31
33 4,082.5 32 Open Deciduous Mixed,Medium-aged
65 57.3 32
----------
4,139.7 32
5 42,339.6 60 Tall Shrub -Alder
36 8,606.6 60
60 1,750.7 60
64 177.5 60
71 1,604.4 60
-----...----
54,478.8 60
4 173.9 61 Tall Shrub -Alder-Willow
8 14.4 61
11 127.3 61
12 55.2 61
14 410.8 61
16 98.9 61
17 105.7 61
19 107.8 61
28 983.6 61
52 1,274.6 61
----------
3,352.3 61
D-60
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS C6
POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
21 586.9 62
46 52.1 62
56 154.8 62
----------
793.9 62
22 9.3 65
23 563.4 65
38 1)418.6 65
55 455.0 65
.70 316.4 65
73 31.0 65
----------
2,793.6 65
2 60.2 66
10 683.3 66
15 2,253.4 66
26 483.1 66
27 333.8 66
44 290.0 66
48 99.2 66
----------
4,203.0 66
6 1,325.9 67
9 15,106.2 67
18 92.4 67
20 630.8 67
24 6,292.8 67
29 86.1 67
31 1,239.4 67
34 201.7 67
35 1,426.2 67
39 88.7 67
41 2,815.3 67
42 414.7 67
45 143.8 67
47 100.0 67
49 68.9 67
50 6,983.8 67
ALPHA
CODE
Low Shrub -Willow Resin Birch
Tundra -Herbacious
Tundra -Shrub
Tundra -Mat and Cushion
D-61
PAGE 2
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS C6
[
[
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POLYGON TOTAL NUMERIC
NUMBER ACRES CODE
51 290.8 67
53 193.2 67
54 828.1 67
57 356.8 67
58 78.1 67
61 157.6 67
62 288.8 67
63 93.2 67
66 65.1 67
67 19.9 67
68 25.9 67
69 6.4 67
72 19.4 67
74 597.2 67
75 10.1 67
76 56.0 67
----------
40»103.3 67
7 1,822.9 97
===========
119,160.2
ALPHA
CODE
Tundra -Mat and Cushion
Rivers greater than 1/8 mile
D-62
PAGE 3
ALASK~SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS D5
[
[
L
POLYGON TOTAL .NUMERIC
NUMBER ACRES CODE
2 203.6 60
5 181.0 .60
----------
384.7 60
3 912.1 62
10 253.7 65
6 39.8 67
7 34.8 67
9 139.0 61
11 1,355.0 67
----------
1,568.6 67
4 353.6 81
8 264.8 81
--~-------
618.4 81
===========
3,737.4
ALPHA
CODE
Tall Shrub -Alder
Low Shrub -lo1illow Resin Birch
Tundra -Herbacious
Tundra -Mat and Cushion
Rock
D-63
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ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS D6
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
4 560.2 21 Closed White Spruce,Short
30 82.8 21
32 687.2 21
34 207.3 21
35 199.4 21
----------
1,736.8 21
61 722.4 22 Closed Deciduous Mixed,Young
48 563.5 24 Closed Deciduous Mixed,Medium-aged
58 3,989.4 24
66 4,301.2 24
72 499.7 24
73 332.0 24
79 619.7 24
----------
10,305.4 24
10 48.6 28 Closed Cottonwood,Medium-aged
65 4.9 "28
67 275.8 28
69 170.0 28
----------
499.3 28
62 28.3 29 Closed Cottonwood,Old
64 64.3 29
----------
92.6 29
45 665.4 31 Open White Spruce,Short
52 121.6 31
----------
787.0 31
15 239.6 32 Open Deciduous Mixed,Medium-aged
47 408.0 32
50 2,434.7 32
----------
3,082.3 32
D-64
ALAS~~SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS D6
TOTAL NUMERIC
ACRES CODE
POLYGON
N1J}ffiER
40
68
366.2
101.9
34
42
ALPHA
CODE
Open.Deciduous Mixed.Old
Closed Black Spruce,Tall
PAGE 2
r:
r
[
r-'
r "
r
2 4,204.8
5 262.6
6 183.5
9 181.9
12 4,266.1
14 128.6
17 9,754.6
44 76.7
54 807.5
59 297.8
60 986.9
70 3.211.0
----------
24.362.0
16 197.1
18 18.4
24 322.0
41 47.6
49 85.5
53 409.5
71 110.9
77 448.4
81 37.0
----------
1.676.5
38 113.5
42 3,356.0
55 2,866.7
----------
6,336.2
13 21.0
20 27.3
25 50.8
26 143.6
60 Tall Shrub -Alder
60
60
60
60
60
60
60
60
60
60
60
60
61 Tall Shrub -Alder-Willow
61
61
61
61
61
61
61
61
61 .
62 Low Shrub -Willow Resin Birch
62
62
62
64 Tundra -Sedge Grass
64
64
64
D-65
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r'L
L
PAGE
ALASKA SUSITNA RIVERBASIN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS D6
500.1 64
TOTAL NUMERIC
ACRES CODE
3
ALPHA
CODE
Tundra -Herbacious
Tundra -Sedge Grass64
64
64
64
65
65
65
65
65
65
101.2
76.8
36.7
42.7
609.9
1)097.6
127.1
223.0
723.8
435.3
27
31
33
37
3
21
22
39
75
78
POLYGON
NUMBER
[
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L
[
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3,216.8
80 204.0
7 1)333.9
8 40.0
28 7,239.9
29 245.7
36 114.7
74 3,377.2
12)351.5
19 7.3
43 122.1
46 269.9
56 270.5
76 88.3
758.1
51 36.9
65
66
67
67
67
67
67
67
67
69
69
69
69
69
69
70
Tundra -Shrub
Tundra -Mat and Cushion
Freshwater Wetland -Sphagnum-Shrub Bog
Cultural Influences
r -
L
11
23
434.3
3,036.5
80
83
Mud Flats
Glacier
f'
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L D-66
ALASKA SUSITNA RIVERBASTN
UPPER SUSITNA SUBBASIN
VEGETATION BY POLYGON -TALKEETNA MOUNTAINS D6
POLYGON TOTAL NUMERIC ALPHA
NUMBER ACRES CODE CODE
57 134.4 91 Lakes greater than 40 acres
63 1,012.3 97 Rivers greater than 1/8 mile
===:::1=======
71,753.5
D-67
PAGE 4
[
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APPENDIX E
UPPER SUSITNA
GRID MAP LEGENDS AND STATISTICS
a) Areas A, B, D & E
b) Area C
E-1
[
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6
C
[
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CLASS
0-3%Slope
3-7%Slope
7-12%Slope
12-20%Slope
20-30%Slope
30-40%Slope
Greater Than 45%Slope
CH-138
SLOPE
UPPER SUSITNA SUBBASIN
Areas A,B,D &E
TOTAL AREA (Acres)
143,520
131,560
269,200
332,240
350,560
271 ,480
391,160
E-2
%
7.59
6.96
14.25
17.58
18.55
14.37
20.70
CLASS
Non-Vegetated
Closed Forests
Open Forests
Fresh Water Wetlands
Salt Water Wetlands
Shrub
Tundra
Grass1c:md
eli-I'=;3
RANGE SUITABILITY
UPPER SUSITNA SUBBASIN
Areas A,B,D &E
TOTAL AREA (Acres)
217,520
57,680
32,000
5,400
o
469,040
1,106,960
1,120
E-3
%
11.51
3.05
1.69
0.29
0.00
24.82
58.58
0.06
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FOREST SUITABILITY
UPPER SUSITNA SUBBASI~
Areas A,B,D &E
CLASS TOTAL AREA (Acres)%
Non-Forest 1,800,040 95.25
Open Cottonwood 0 0.00
Closed Cottonwood 840 0.04
Open Mixed Forest 11 ,600 0.61
Closed Mixed Forest 39,600 2.10
Open Black Spruce 0 0.00
Closed 11ack Spruce 3,040 0.16
Open \-ihite Spruce 20,400 1.08
Closec h~ite Spruce,Hemlock 14,200 0.75
[E-4
CLASS
I-later
Low
Low/Hoderate
Hoderate
Hoderate/High
High
Very High
eli-U8
EROSION H.t\.ZARD
UPPER SUSITNA SUBBASIN
Areas A,B,D &E
TOTAL AREA (Acres)
8,240
135,440
131,440
269,160
332,240
350;560
662,640
E-5
•
%
0.44
7.17
6.96
14.24
17.58
18.55
35.07 r-'
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CLASS
High
Noderate
Low
Unsuitable
Ch-138
CAPABILITY FOR URBAN DEVELOPMENT
UPPER SUSITNA SUBBASIN
Areas A,B,D &E
TOTAL AREA (Acres)
2,240
41,880
1,239,480
606,120
E-6
%
0.12
2.22
65.59
32 .•07
HIGH SPECIES DIVERSITY/CAPABILITY
TOTAL AREA (Acres)
MODERATE SPECIES DIVERSITY/CAPABILITY
GENERAL HABITAT I -Nap A
UPPER SUSITNA SUBBASIN
Areas A,B,C &E
[
r~
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%
11 ,600 0.61
20,400 1.08
20,680 1.09
0 0.00
37,720 2.00
97,800 5.18
0 0.00
CLASS
Mixed Forest -Open
Conifer Forest -Open
Tall Shrub Alder -Willow
Deciduous Forest -Open
Mixed Forest -Closed·
Low Shrub -Willow Resin Birch
Salt Water Wetland,Grassland,
and Tidal Marsh
Conifer Forest -Closed
LOH Shrub SaltWater Hetland
Deciduous Forest -Closed
Short Black Spruce -Open
Sphagnum Bog
Tall Shrub Alder
Grassland
TUNDRA -SPECIAL CONSIDERATION
Tundrn
LOt\'SPECIES DIVERSITY/CAPABILITY
LOH Diversity/Capability
17,240
o
2,720
o
5,400
342,440
1,120
1,115,080
209,240
0.91
0.00
0.14
0.00
0.29
18.12
0.06
59.01
11.07
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L
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L
LAKES AND STREfu~S -SPECIAL CONSIDERATION
Lakes and Streams 8,280 0.44 L
[
L
L
f'
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CH-UB E-7 L
TOTAL AREA (Acres)
GENERAL HABITAT II -Map B
UPPER SUSITNA SUBBASIN
Areas A,B,D &E
[
[
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CLASS
High Diversity/Capability
Hoderate Diversity/Capability
Low Diversity/Capability
Tundra -Special Consideration
Lakes and Streams -Special
Consideration
CH-l38
188,200
368,920
209,240
1,115,080
8,280
E-8
%
9.96
19.52
11.07
59.01
0.44
HOOSE P.ABITAT
UPPER SUSITNA SUBBASIN
Areas'A)B,D &E
CL>\SS
Mod/High WR.(S,S,F)Range
Mod/Hi.gh (S,S)F)Range)No HR
LO\I1 to No Habitat
No Habitat
Hater
Abbreviations:
WR =Winter Range
S,S,F =Spring,Summer)Fall
CEl-Dc:
TOTAL AREA (Acres)%
452)800 23.96
109)440 5.79
1)319,120 69.81
80 0.00
8,280 0.44
E-9
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ROAD SUITABILITY
UPPER SUSITNA SUBBASIN
Areas A,B,D &E
CLASS TOTAL AREA (Acres)
High Suitability 103,600
High/Moderate Suitability 49,800
Moderate Suitability 161,160
Low Suitability 574,080
Very Low Suitability 795,080
Extremely Low Suitability 206,000
%
5.48
2.64
8.53
30.38
42.07
10.90
Cli-U8 E-IO
CLASS
0-3%Slope
3-7%Slope
7-12%Slope
12-20%Slope
20-30%Slope
30-45%Slope
GreQter Than 45%
Cli-1:31:>
SLOPE
UPPER SUSITNA SUBBASIN
AREA C
TOTAL AREA (Acres)%
264,120 54.30
148,120 30.45
38,120 7.84
22,040 4.53
9,880 2.03
3,880 0.80
280 0.06
E-ll
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CLASS
Non-Vegetated
Closed Forests
Open Forests
Fresh Water Wetlands
Salt Water Wetlands
Shrub
Tundra
Grassland
CE--138
RANGE SUITABILITY
UPPER SUSITNA SUBBASIN
AREA C
TOTAL AREA (Acres)
44)720
3,960
83)280
13,440
o
301)760
39)280
o
E-12
%
9.19
0.81
17.12
2.76
0.00
62.03
8.07
0.00
FOREST SUITABILITY
UPPER SUSITNA SUBBASIN
AREA C
CLASS TOTAL AREA (Acres)%
Non-Forest 399,200 82.07
Open Cottonwood 0 0.00
Closed Cottonwood 240 0.05
Open Mixed Forest 0 0.00
Closed Mixed Forest 0 0.00
Open Black Spruce 39,280 8.07
Closed Black Spruce 0 0.00,
Open White Spruce 44,000 9.05
Closed Uhite Spruce,Hemlock 3,720 0.76
[
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L
Cli--I](:,E-13 [
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EROSION HAZARD
UPPER SUSITNA SUBBASIN
AREA C
CLASS TOTAL AREA (Acres)%
Water 44,720 9.19
Low 219,400 45.10
Low/t-lodera te 148,120 30.45
Hoderate 38,120 7.84
Hoderate/High 22,040 4.53
High 9,880 2.03
Very High 4,160 0.86
L CH-138 E-14
CLASS
High
Noderate
Low
Unsuitable
CH-138
CAPABILITY FOR URBAN DEVELOPNENT
UPPER SUSITNA SUBBASIN
AREA C
TOTAL AREA (Acres)
o
47,160
373,520
65,760
E-15
%
0.00
9.69
76.79
13.52
r
L
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L
[
L
r
L
(.
L
L
Tundra 89,160 18.33
LOW SPECIES DIVERSITY/CAPABILITY
Lew Diversity/Capability 0 0.00
LAKES AND STREAM -SPECIAL CONSIDERATION
Lakes and Str.eaI:1S 44,720 9.19
HIGH SPECIES DIVERSITY/CAPABILITY
TOTAL AREA (Acres)
GENERAL HABITAT I -Map A
UPPER SUSITti~SUBBASIN
AREA C
%
0.76
0.00
0.05
8.07
2.76
0.00
0.00
3,720
o
240
39,280
13,440
o
o
0 0.00
44,000 9.05
0 0.00
0 0.00
0 0.00
251,880 51.78
0 0.00
TUND~~-SPECIAL CO~SIDERATION
Conifer Forest Closed
Lm~Shrub Salt Hater Hetland
Deciduous Forest -Closed
Short Black Spruce - Open
Sphagnum Bog
Tall Shrub Alder
Grassland
HODER.~TE SPECIES DIVERSITY/CAPABILITY
CLASS
Mixed Forest -Open
Conifer Forest -Open
Tall Shrub Alder -Willow
Deciduous Forest -Open
Nixed Forest -Closed
Low Shrub -Willow Resin Birch
Sal t \·]ater Wetland,Grassland
and Tidal Marsh
r~
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6
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C
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GENERAL t~BITAT II -Map B
UPPER SUSITNA SUBBASIN
AREA C
TOTAL AREA (Acres)0/
/0
295.88CJ 60.83
56.880 11.65
0 0.00
89.160 18.33
CLASS
High Diversity/Capability
Hoderate Diversity/Capability
Low Diversity/Capability
Tundra -Special Consideration
Lakes and Streams -
Special Consideration
E-17
44.720 9.19
rL
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HOOSE HABITAT
UPPER SUSITNA SUBBASIN
AREA C
CLASS TOTAL AREA (Acr'es)%
Hod/High WR)(S,S,F)Range 47,960 9.86
Mod/High (S,S)F,)Range,No t-."R.49)840 10.25
Low to No Habit2t 343)920 70.70
No Habitat 0 0.00
\
\i'ater 44)720 9.19
Abbreviations:
WR =llinter Range
S,S,F =Spring,Summer,Fall
CH-138 E-18
CLASS
High Suitability
High/Noderate Suitability
Moderate Suitability
Lot.; Suitability
Very Low Suitability
Extremely Low Suitability
CE-138
ROAD SUITABILITY
UPPER SUSITNA SUBBASIN
AREA C
TOTAL AREA (Acres)
268,200
6. 720.
65,600
37,920
62,960
45,040
E-19
%
55.14
1.38
13.49
7.80
12.94
9.26