10 Columbia Plateau 10a Channeled Scablands 10b Loess Islands 10c Umatilla Plateau 10d Okanogan Drift Hills 10e Pleistocene Lake Basins 10f Dissected Loess Uplands 10g Yakima Folds 10h Palouse Hills 10i Deep Loess Foothills 10j Nez Perce Prairie 10k Deschutes/John Day Canyons 10l Lower Snake and Clearwater Canyons 10m Okanogan Valley 11 Blue Mountains 11a John Day/Clarno Uplands 11b John Day/ Clarno Highlands 11c Maritime-Influenced Zone 11d Melange 11e Wallowas/Seven Devils Mountains 11f Canyons and Dissected Highlands 11g Canyons and Dissected Uplands 11h Continental Zone Highlands 11i Continental Zone Foothills 11k Blue Mountain Basins 11l Mesic Forest Zone 11m Subalpine Zone 11n Deschutes River Valley 11o Cold Basins 12 Snake River Plain 12a Treasure Valley12b Lava Fields 12c Camas Prairie12d Dissected Plateaus and Teton Basin 12e Upper Snake River Plain 12f Semiarid Foothills 12g Eastern Snake River Basalt Plains 12h Mountain Home Uplands 12i Magic Valley 12j Unwooded Alkaline Foothills 13 Central Basin and Range 13a Salt Deserts 13b Shadscale-Dominated Saline Basins 13c Sagebrush Basins and Slopes 13d Woodland- and Shrub-Covered Low Mountains 13e High Elevation Forested Mountains 13f Moist Wasatch Front Footslopes 13g Wetlands 13h Salt Desert Shrub Valleys 13i Malad and Cache Valleys 15 Northern Rockies 15a Grave Creek Range-Nine Mile Divide 15b Camas Valley 15c Flathead Valley
15d Tobacco Plains 15e Flathead Hills and Mountains 15f Grassy Potlatch Ridges 15g Western Okanogan Semiarid Foothills 15h High Northern Rockies 15i Clearwater Mountains and Breaks 15j Lower Clearwater Canyons 15k Clark Fork Valley and Mountains 15l Salish Mountains 15m Kootenai Valley 15n Weippe Prairie 15o Coeur d'Alene Metasedimentary Zone 15p St. Joe Schist-Gneiss Zone 15q Purcell-Cabinet-North Bitterroot Mountains 15r Okanogan-Colville Xeric Valleys and Foothills 15s Spokane Valley Outwash Plains 15t Stillwater-Swan Wooded Valley 15u Inland Maritime Foothills and Valleys 15v Northern Idaho Hills and Low Relief Mountains 15w Western Selkirk Maritime Forest 15x Okanogan Highland Dry Forest 15y Granitic Selkirk Mountains 16 Idaho Batholith 16a Eastern Batholith 16b Lochsa Uplands 16c Lochsa-Selway-Clearwater Canyons 16d Dry, Partly Wooded Mountains 16e Glaciated Bitterroot Mountains and Canyons 16f Foothill Shrublands-Grasslands 16g High Glacial Drift-Filled Valleys 16h High Idaho Batholith 16i South Clearwater Forested Mountains 16j Hot Dry Canyons 16k Southern Forested Mountains 17 Middle Rockies 17d Eastern Gravelly Mountains 17e Barren Mountains 17f Crazy Mountains 17g Absaroka-Gallatin-Madison-Bridger Sedimentary Mountains 17h High Elevation Rockland Alpine Zone 17i Absaroka-Gallatin Volcanic Mountains 17j West Yellowstone Valley 17k Lady of the Lake 17l Gneissic-Schistose Forested Mountains 17m Big Horn-Pryor Mountains 17n Cold Valleys 17o Partly Forested Mountains 17p Foothill Potholes 17q Big Snowy-Little Belt Carbonate Mountains 17r Scattered Eastern Igneous-Core Mountains 17s Bitterroot-Frenchtown Valley 17t Limy Foothill Savanna 17u Paradise Valley 17v Big Belt Forested Highlands
17w Townsend Basin 17x Rattlesnake-Blackfoot-South Swan-Northern Garnet-Sapphire Mountains 17y Townsend-Horseshoe-London Sedimentary Hills 17z Tobacco Root Mountains 17aa Dry Intermontane Sagebrush Basins 17ab Dry Gneissic-Schistose-Volcanic Hills 17ac Big Hole 17ad Western Beaverhead Mountains 17ae Forested Beaverhead Mountains 17af Centennial Basin 17ag Pioneer-Anaconda Ranges 17ah Eastern Pioneer Sedimentary Mountains 17ai Elkhorn Mountains-Boulder Batholith 17aj Eastern Divide Mountains 17ak Deer Lodge-Philipsburg-Avon Grassy Intermontane Hills and Valleys 17al Southern Garnet Sedimentary-Volcanic Mountains 17am Flint Creek-Anaconda Mountains 18 Wyoming Basin 18a Rolling Sagebrush Steppe 18b Northern Semiarid Intermontane Basin 18c Wet Valleys 18d Semiarid Bear Hills 19 Wasatch and Uinta Mountains 19a Alpine Zone 19b Uinta Subalpine Forests 19c Mid-Elevation Uinta Mountains 19d Wasatch Montane Zone 19e High Plateaus 19f Semiarid Foothills 19g Mountain Valleys 20 Colorado Plateaus 20g Northern Uinta Basin Slopes 41 Canadian Rockies 41a Northern Front 41b Crestal Alpine-Subalpine Zone 41c Western Canadian Rockies 41d Southern Carbonate Front 41e Flathead Thrust Faulted Carbonate-Rich Mountains 42 Northwestern Glaciated Plains 42j Glaciated Northern Grasslands 42l Sweetgrass Uplands 42m Cherry Patch Moraines 42n Milk River Pothole Upland 42o North Central Brown Glaciated Plains 42p Foothill Grassland 42q Rocky Mountain Front Foothill Potholes 43 Northwestern Great Plains 43l Missouri Breaks Woodland-Scrubland 43m Judith Basin Grassland 43n Central Grassland
43o Unglaciated Montana High Plains 43p Ponderosa Pine Forest-Savanna Hills 43r Pryor-Big Horn Foothills 43s Non-calcareous foothill grassland 43t Smith-Shield Valleys 43u Limy Foothill Grassland 77 North Cascades 77a North Cascades Lowland Forests 77b North Cascades Highland Forests 77c North Cascades Subalpine/Alpine 77d Pasayten/Sawtooth Highlands 77e Okanogan Pine/Fir Hills 77f Chelan Tephra Hills 77g Wenatchee/Chelan Highlands 77h Chiwaukum Hills and Lowlands 77i High Olympics 78 Klamath Mountains 78a Rogue/Illinois Valleys 78b Siskiyou Foothills 78c Umpqua Interior Foothills 78d Serpentine Siskiyous 78e Inland Siskiyous 78f Coastal Siskiyous 78g Klamath River Ridges 80 Northern Basin and Range 80a Dissected High Lava Plateau 80b Sagebrush Steppe- and Woodland-Covered Hills and Low Mountains 80c High Elevation Forests and Shrublands 80d Pluvial Lake Basins 80e High Desert Wetlands 80f Owyhee Uplands and Canyons 80g High Lava Plains 80h Saltbush-Dominated Valleys 80i Sagebrush Steppe Valleys 80j Semiarid Uplands 80k Partly Forested 4e High Southern Cascades Montane Forest 4f Umpqua Cascades 4g Southern Cascades 9 Eastern Cascade Slope and Foothills 9a Yakima Plateau & Slopes 9b Grand Fir Mixed Forest 9c Oak/Conifer Eastern Cascades-Columbia Foothills 9d Ponderosa Pine/Bitterbrush Woodland 9e Pumice Plateau Forest 9f Cold Wet Pumice Plateau Basins 9g Klamath/Goose Lake Warm Wet Basins 9h Fremont Pine/Fir Forest 9i Southern Cascade Slope 9j Klamath Juniper/Ponderosa Pine Woodland