Land Cover
Information on Idaho's Land Cover layer including methods, layer codes, accuracy, and maps.
Land Stewardship
Information on Idaho land ownership and management with detailed methods, maps, and results.
Vertebrate Modeling
All information on Idaho's vertebrate species gathered and developed for ID-GAP can be accessed online through the new Idaho Vertebrate Modeling Database (IDVMD).
Final Report
View or download an Adobe Acrobat (.pdf) version of the ID-GAP final report.
Idaho Maps
View maps produced as part of the Idaho Gap Analysis project.
Publications
A listing of GAP-related publications.
ID-GAP Land Cover Classification Scheme

Modified from Redmond et al. (1996) and Homer et al. (1998)

1000 Urban or Developed Land
1000 Urban
1001 High Intensity Urban
1002 Low Intensity Urban
1101 Disturbed, High
1102 Disturbed, Low
2000 Agricultural Land

3000 Non-Forested Lands

31xx - Grasslands
3101 Foothills Grassland
3102 Disturbed Grassland
3103 Herbaceous Clearcut
3104 Montane Parklands and Subalpine Meadow
3105 Wet Meadow
3106 Herbaceous Burn
3107 Shrub/Steppe Annual Grass-Forb
3108 Dry Meadow
3109 Perennial Grassland
3110 Perennial Grass Slope
32xx – Mesic Shrublands
3201 Mesic Upland Shrubs
3202 Warm Mesic Shrubs
33xx – Xeric Shrublands
3301 Curlleaf Mountain Mahogany
3304 Bitterbrush
3305 Mountain Big Sagebrush
3306 Wyoming Big Sagebrush
3307 Basin & Wyoming Big Sagebrush
3308 Black Sagebrush Steppe
3309 Silver Sage
3310 Salt-desert Shrub
3312 Rabbitbrush
3315 Low Sagebrush
3316 Mountain Low Sagebrush
4000 Forest Uplands

41xx – Broadleaf Forest
4101 Aspen
4102 Cottonwood
4103 Maple
42xx – Needleleaf Forest
4201 Englemann Spruce
4203 Lodgepole Pine
4206 Ponderosa Pine
4207 Grand Fir
4208 Subalpine Fir
4210 Western Red Cedar
4211 Western Hemlock
4212 Douglas-fir
4215 Western Larch
4216 Douglas-fir/Limber Pine
4217 Subalpine Pine
4218 Subalpine fir/Whitebark Pine
4219 Mixed Whitebark Pine Forest
4220 Mixed Subalpine Forest
4221 Mixed Mesic Forest
4222 Mixed Xeric Forest
4223 Douglas-fir/Lodgepole Pine
4225 Douglas-fir/Grand Fir
4226 Western Red Cedar/Grand Fir Forest
4227 Western Red Cedar/Western Hemlock
4228 Western Larch/Lodgepole Pine
4229 Western Larch/Douglas-fir
4230 Utah Juniper
4231 Western Juniper
4232 Pinyon Pine/Juniper
43xx – Mixed Needleleaf/Broadleaf Forest
4301 Mixed Needleleaf/Broadleaf Forest
44xx – Burnt, Standing Timber
4401 Burnt, Standing Timber
5000 Water

6000 Riparian and Wetland Areas 61xx – Forested Riparian
6101 Needleleaf Dominated Riparian
6102 Broadleaf Dominated Riparian
6103 Needleleaf/Broadleaf Dominated Riparian
6104 Mixed Riparian (Forest and Non-forest)
62xx – Non-forested Riparian
6201 Graminoid or Forb Dominated Riparian
6202 Shrub Dominated Riparian
6203 Mixed Non-forest Riparian
63xx Wetlands
6301 Deep Marsh
6302 Shallow Marsh
6303 Aquatic Bed
6304 Mud Flat
7000 Barren Land
7201 Sand Dune
7202 Vegetated Sand Dune
7300 Exposed Rock
7301 Lava
7302 Vegetated Lava
7800 Mixed Barren Land
7900 Shoreline and Stream Gravel Bars
8000 Alpine Meadow
8100 Alpine Meadow
9000 Snow, Ice, Cloud or Cloud Shadow
9100 Perennial Ice or Snow
9800 Cloud
9900 Cloud Shadow

For more information on 
Idaho Gap Analysis, contact:
Leona Svancara
leonab@uidaho.edu
Idaho Fish and Wildlife Co-op Unit
University of Idaho
Moscow, ID 83844-4412