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Legend (ORD/USEPA_Ecoregions_Level_III_and_IV)

State Lines (0)
Level III Ecoregion Lines (Scale GT 9,000,000) (2)
Level III Ecoregion Line Level III Ecoregion Line
Level III Ecoregion Lines (Scale LT 9,000,000) (3)
Level III Ecoregion Line Level III Ecoregion Line
Level III Ecoregion Labels (Scale GT 4,000,000) (4)
Level IV Ecoregion Labels (Scale LT 4,000,000) (5)
Level IV Ecoregion Lines (Scale LT 9,000,000) (6)
Level IV Ecoregion Polygons (7)
1a Coastal Lowlands 1a Coastal Lowlands
1b Coastal Uplands 1b Coastal Uplands
1c Low Olympics 1c Low Olympics
1d Volcanics 1d Volcanics
1e Outwash 1e Outwash
1f Willapa Hills 1f Willapa Hills
1g Mid-Coastal Sedimentary 1g Mid-Coastal Sedimentary
1h Southern Oregon Coastal Mountains 1h Southern Oregon Coastal Mountains
1i Northern Franciscan Redwood Forest 1i Northern Franciscan Redwood Forest
1j King Range/Mattole Basin 1j King Range/Mattole Basin
1k Coastal Franciscan Redwood Forest 1k Coastal Franciscan Redwood Forest
1l Fort Bragg/Fort Ross Terraces 1l Fort Bragg/Fort Ross Terraces
1m Point Reyes/Farallon Islands 1m Point Reyes/Farallon Islands
1n Santa Cruz Mountains 1n Santa Cruz Mountains
1o San Mateo Coastal Hills 1o San Mateo Coastal Hills
2a Fraser Lowland 2a Fraser Lowland
2b Eastern Puget Riverine Lowlands 2b Eastern Puget Riverine Lowlands
2c San Juan Islands 2c San Juan Islands
2d Olympic Rainshadow 2d Olympic Rainshadow
2e Eastern Puget Uplands 2e Eastern Puget Uplands
2f Central Puget Lowland 2f Central Puget Lowland
2g Southern Puget Prairies 2g Southern Puget Prairies
2h Cowlitz/Chehalis Foothills 2h Cowlitz/Chehalis Foothills
2i Cowlitz/Newaukum Prairie Floodplains 2i Cowlitz/Newaukum Prairie Floodplains
3a Portland/Vancouver Basin 3a Portland/Vancouver Basin
3b Willamette River and Tributaries Gallery Forest 3b Willamette River and Tributaries Gallery Forest
3c Prairie Terraces 3c Prairie Terraces
3d Valley Foothills 3d Valley Foothills
4a Western Cascades Lowlands and Valleys 4a Western Cascades Lowlands and Valleys
4b Western Cascades Montane Highlands 4b Western Cascades Montane Highlands
4c Cascade Crest Montane Forest 4c Cascade Crest Montane Forest
4d Cascade Subalpine/Alpine 4d Cascade Subalpine/Alpine
4e High Southern Cascades Montane Forest 4e High Southern Cascades Montane Forest
4f Low Southern Cascades Mixed Conifer Forest 4f Low Southern Cascades Mixed Conifer Forest
4g California Cascades Eastside Conifer Forest 4g California Cascades Eastside Conifer Forest
4h Southern Cascades Foothills 4h Southern Cascades Foothills
5a Sierran Alpine 5a Sierran Alpine
5b Northern Sierra Subalpine Forests 5b Northern Sierra Subalpine Forests
5c Northern Sierra Upper Montane Forests 5c Northern Sierra Upper Montane Forests
5d Northern Sierra Mid-Montane Forests 5d Northern Sierra Mid-Montane Forests
5e Northern Sierra Lower Montane Forests 5e Northern Sierra Lower Montane Forests
5f Northeastern Sierra Mixed Conifer-Pine Forests 5f Northeastern Sierra Mixed Conifer-Pine Forests
5g Central Sierra Mid-Montane Forests 5g Central Sierra Mid-Montane Forests
5h Central Sierra Lower Montane Forests 5h Central Sierra Lower Montane Forests
5i Eastern Sierra Great Basin Slopes 5i Eastern Sierra Great Basin Slopes
5j Eastern Sierra Mojavean Slopes 5j Eastern Sierra Mojavean Slopes
5k Southern Sierra Subalpine Forests 5k Southern Sierra Subalpine Forests
5l Southern Sierra Upper Montane Forests 5l Southern Sierra Upper Montane Forests
5m Southern Sierra Mid-Montane Forests 5m Southern Sierra Mid-Montane Forests
5n Southern Sierra Lower Montane Forest and Woodland 5n Southern Sierra Lower Montane Forest and Woodland
5o Tehachapi Mountains 5o Tehachapi Mountains
6a Tuscan Flows 6a Tuscan Flows
6b Northern Sierran Foothills 6b Northern Sierran Foothills
6c Southern Sierran Foothills 6c Southern Sierran Foothills
6d Camanche Terraces 6d Camanche Terraces
6e Tehama Terraces 6e Tehama Terraces
6f Foothill Ridges and Valleys 6f Foothill Ridges and Valleys
6g North Coast Range Eastern Slopes 6g North Coast Range Eastern Slopes
6h Western Valley Foothills/Dunnigan Hills 6h Western Valley Foothills/Dunnigan Hills
6i Clear Lake Hills and Valleys 6i Clear Lake Hills and Valleys
6j Mayacmas Mountains 6j Mayacmas Mountains
6k Napa-Sonoma-Lake Volcanic Highlands 6k Napa-Sonoma-Lake Volcanic Highlands
6l Napa-Sonoma-Russian River Valleys 6l Napa-Sonoma-Russian River Valleys
6m Sonoma-Mendocino Mixed Forest 6m Sonoma-Mendocino Mixed Forest
6n Bodega Coastal Hills 6n Bodega Coastal Hills
6o Marin Hills 6o Marin Hills
6p Bay Flats 6p Bay Flats
6q Suisun Terraces and Low Hills 6q Suisun Terraces and Low Hills
6r East Bay Hills/Western Diablo Range 6r East Bay Hills/Western Diablo Range
6s San Francisco Peninsula 6s San Francisco Peninsula
6t Bay Terraces/Lower Santa Clara Valley 6t Bay Terraces/Lower Santa Clara Valley
6u Livermore Hills and Valleys 6u Livermore Hills and Valleys
6v Upper Santa Clara Valley 6v Upper Santa Clara Valley
6w Monterey Bay Plains and Terraces 6w Monterey Bay Plains and Terraces
6x Leeward Hills/Western Diablo Range 6x Leeward Hills/Western Diablo Range
6y Gabilan Range 6y Gabilan Range
6z Diablo Range 6z Diablo Range
6aa Eastern Hills 6aa Eastern Hills
6ab Pleasant Valley/Kettleman Plain 6ab Pleasant Valley/Kettleman Plain
6ac Temblor Range/Elk Hills 6ac Temblor Range/Elk Hills
6ad Grapevine Transition 6ad Grapevine Transition
6ae Tehachapi Foothills 6ae Tehachapi Foothills
6af Salinas Valley 6af Salinas Valley
6ag Northern Santa Lucia Range 6ag Northern Santa Lucia Range
6ah Santa Lucia Coastal Forest and Woodland 6ah Santa Lucia Coastal Forest and Woodland
6ai Interior Santa Lucia Range 6ai Interior Santa Lucia Range
6aj Southern Santa Lucia Range 6aj Southern Santa Lucia Range
6ak Paso Robles Hills and Valleys 6ak Paso Robles Hills and Valleys
6al Salinas-Cholame Hills 6al Salinas-Cholame Hills
6am Cuyama Valley 6am Cuyama Valley
6an Carrizo Plain 6an Carrizo Plain
6ao Caliente Range 6ao Caliente Range
6ap Solomon-Purisima-Santa Ynez Hills 6ap Solomon-Purisima-Santa Ynez Hills
6aq Santa Maria/Santa Ynez Valleys 6aq Santa Maria/Santa Ynez Valleys
6ar Upper Sacramento River Alluvium 6ar Upper Sacramento River Alluvium
7a Northern Terraces 7a Northern Terraces
7b North Valley Alluvium 7b North Valley Alluvium
7c Butte Sink/Sutter and Colusa Basins 7c Butte Sink/Sutter and Colusa Basins
7d Southern Hardpan Terraces 7d Southern Hardpan Terraces
7e Sacramento/Feather Riverine Alluvium 7e Sacramento/Feather Riverine Alluvium
7f Sutter Buttes 7f Sutter Buttes
7g Yolo Alluvial Fans 7g Yolo Alluvial Fans
7h Yolo/American Basin 7h Yolo/American Basin
7j Delta 7j Delta
7k Lodi Alluvium 7k Lodi Alluvium
7l Stockton Basin 7l Stockton Basin
7m San Joaquin Basin 7m San Joaquin Basin
7n Manteca/Merced Alluvium 7n Manteca/Merced Alluvium
7o Westside Alluvial Fans and Terraces 7o Westside Alluvial Fans and Terraces
7p Granitic Alluvial Fans and Terraces 7p Granitic Alluvial Fans and Terraces
7q Panoche and Cantua Fans and Basins 7q Panoche and Cantua Fans and Basins
7r Tulare Basin/Fresno Slough 7r Tulare Basin/Fresno Slough
7s Kern Terraces 7s Kern Terraces
7t South Valley Alluvium 7t South Valley Alluvium
7u Antelope Plain 7u Antelope Plain
7v Southern Clayey Basins 7v Southern Clayey Basins
8a Western Transverse Range Lower Montane Shrub and Woodland 8a Western Transverse Range Lower Montane Shrub and Woodland
8b Western Transverse Range Montane Forest 8b Western Transverse Range Montane Forest
8c Arid Montane Slopes 8c Arid Montane Slopes
8d Southern California Subalpine/Alpine 8d Southern California Subalpine/Alpine
8e Southern California Lower Montane Shrub and Woodland 8e Southern California Lower Montane Shrub and Woodland
8f Southern California Montane Conifer Forest 8f Southern California Montane Conifer Forest
8g Northern Transverse Range 8g Northern Transverse Range
9a Yakima Plateau and Slopes 9a Yakima Plateau and Slopes
9b Grand Fir Mixed Forest 9b Grand Fir Mixed Forest
9c Oak/Conifer Foothills 9c Oak/Conifer Foothills
9d Ponderosa Pine/Bitterbrush Woodland 9d Ponderosa Pine/Bitterbrush Woodland
9e Pumice Plateau 9e Pumice Plateau
9f Pumice Plateau Basins 9f Pumice Plateau Basins
9g Klamath/Goose Lake Basins 9g Klamath/Goose Lake Basins
9h Fremont Pine/Fir Forest 9h Fremont Pine/Fir Forest
9i Southern Cascades Slope 9i Southern Cascades Slope
9j Klamath Juniper Woodland/Devils Garden 9j Klamath Juniper Woodland/Devils Garden
9k Shasta Valley 9k Shasta Valley
9l Pit River Valleys 9l Pit River Valleys
9m Warner Mountains 9m Warner Mountains
9n High Elevation Warner Mountains 9n High Elevation Warner Mountains
9o Likely Tableland 9o Likely Tableland
9p Modoc/Lassen Juniper-Shrub Hills and Mountains 9p Modoc/Lassen Juniper-Shrub Hills and Mountains
9q Adin/Horsehead Mountains Forest and Woodland 9q Adin/Horsehead Mountains Forest and Woodland
9r Adin/Dixie Low Hills 9r Adin/Dixie Low Hills
9s Modoc Lava Flows and Buttes 9s Modoc Lava Flows and Buttes
9t Old Cascades 9t Old Cascades
10a Channeled Scablands 10a Channeled Scablands
10b Loess Islands 10b Loess Islands
10c Umatilla Plateau 10c Umatilla Plateau
10d Okanogan Drift Hills 10d Okanogan Drift Hills
10e Pleistocene Lake Basins 10e Pleistocene Lake Basins
10f Dissected Loess Uplands 10f Dissected Loess Uplands
10g Yakima Folds 10g Yakima Folds
10h Palouse Hills 10h Palouse Hills
10i Deep Loess Foothills 10i Deep Loess Foothills
10j Nez Perce Prairie 10j Nez Perce Prairie
10k Deschutes/John Day Canyons 10k Deschutes/John Day Canyons
10l Lower Snake and Clearwater Canyons 10l Lower Snake and Clearwater Canyons
10m Okanogan Valley 10m Okanogan Valley
10n Umatilla Dissected Uplands 10n Umatilla Dissected Uplands
11a John Day/Clarno Uplands 11a John Day/Clarno Uplands
11b John Day/Clarno Highlands 11b John Day/Clarno Highlands
11c Maritime-Influenced Zone 11c Maritime-Influenced Zone
11d Melange 11d Melange
11e Wallowas/Seven Devils Mountains 11e Wallowas/Seven Devils Mountains
11f Canyons and Dissected Highlands 11f Canyons and Dissected Highlands
11g Canyons and Dissected Uplands 11g Canyons and Dissected Uplands
11h Continental Zone Highlands 11h Continental Zone Highlands
11i Continental Zone Foothills 11i Continental Zone Foothills
11k Blue Mountain Basins 11k Blue Mountain Basins
11l Mesic Forest Zone 11l Mesic Forest Zone
11m Subalpine-Alpine Zone 11m Subalpine-Alpine Zone
11n Deschutes River Valley 11n Deschutes River Valley
11o Cold Basins 11o Cold Basins
12a Treasure Valley 12a Treasure Valley
12b Lava Fields 12b Lava Fields
12c Camas Prairie 12c Camas Prairie
12d Dissected Plateaus and Teton Basin 12d Dissected Plateaus and Teton Basin
12e Upper Snake River Plain 12e Upper Snake River Plain
12f Semiarid Foothills 12f Semiarid Foothills
12g Eastern Snake River Basalt Plains 12g Eastern Snake River Basalt Plains
12h Mountain Home Uplands 12h Mountain Home Uplands
12i Magic Valley 12i Magic Valley
12j Unwooded Alkaline Foothills 12j Unwooded Alkaline Foothills
13a Salt Deserts 13a Salt Deserts
13b Shadscale-Dominated Saline Basins 13b Shadscale-Dominated Saline Basins
13c Sagebrush Basins and Slopes 13c Sagebrush Basins and Slopes
13d Woodland- and Shrub-Covered Low Mountains 13d Woodland- and Shrub-Covered Low Mountains
13e High Elevation Carbonate Mountains 13e High Elevation Carbonate Mountains
13f Moist Wasatch Front Footslopes 13f Moist Wasatch Front Footslopes
13g Wetlands 13g Wetlands
13h Lahontan and Tonopah Playas 13h Lahontan and Tonopah Playas
13i Malad and Cache Valleys 13i Malad and Cache Valleys
13j Lahontan Salt Shrub Basin 13j Lahontan Salt Shrub Basin
13k Lahontan Sagebrush Slopes 13k Lahontan Sagebrush Slopes
13l Lahontan Uplands 13l Lahontan Uplands
13m Upper Humboldt Plains 13m Upper Humboldt Plains
13n Mid-Elevation Ruby Mountains 13n Mid-Elevation Ruby Mountains
13o High Elevation Ruby Mountains 13o High Elevation Ruby Mountains
13p Carbonate Sagebrush Valleys 13p Carbonate Sagebrush Valleys
13q Carbonate Woodland Zone 13q Carbonate Woodland Zone
13r Central Nevada High Valleys 13r Central Nevada High Valleys
13s Central Nevada Mid-Slope Woodland and Brushland 13s Central Nevada Mid-Slope Woodland and Brushland
13t Central Nevada Bald Mountains 13t Central Nevada Bald Mountains
13u Tonopah Basin 13u Tonopah Basin
13v Tonopah Sagebrush Foothills 13v Tonopah Sagebrush Foothills
13w Tonopah Uplands 13w Tonopah Uplands
13x Sierra Nevada-Influenced Ranges 13x Sierra Nevada-Influenced Ranges
13y Sierra Nevada-Influenced High Elevation Mountains 13y Sierra Nevada-Influenced High Elevation Mountains
13z Upper Lahontan Basin 13z Upper Lahontan Basin
13aa Sierra Nevada-Influenced Semiarid Hills and Basins 13aa Sierra Nevada-Influenced Semiarid Hills and Basins
13ab Sierra Valley 13ab Sierra Valley
13ac Upper Owens Valley 13ac Upper Owens Valley
13ad Mono-Adobe Valleys 13ad Mono-Adobe Valleys
13ae Bishop Volcanic Tableland 13ae Bishop Volcanic Tableland
14a Eastern Mojave Basins 14a Eastern Mojave Basins
14b Eastern Mojave Low Ranges and Arid Footslopes 14b Eastern Mojave Low Ranges and Arid Footslopes
14c Eastern Mojave Mountain Woodland and Shrubland 14c Eastern Mojave Mountain Woodland and Shrubland
14d Eastern Mojave High Elevation Mountains 14d Eastern Mojave High Elevation Mountains
14e Arid Valleys and Canyonlands 14e Arid Valleys and Canyonlands
14f Mojave Playas 14f Mojave Playas
14g Amargosa Desert 14g Amargosa Desert
14h Death Valley/Mojave Central Trough 14h Death Valley/Mojave Central Trough
14i Mesquite Flat/Badwater Basin 14i Mesquite Flat/Badwater Basin
14j Western Mojave Basins 14j Western Mojave Basins
14k Western Mojave Low Ranges and Arid Footslopes 14k Western Mojave Low Ranges and Arid Footslopes
14l Western Mojave Mountain Woodland and Shrubland 14l Western Mojave Mountain Woodland and Shrubland
14m Western Mojave High Elevation Mountains 14m Western Mojave High Elevation Mountains
14n Mojave Lava Fields 14n Mojave Lava Fields
14o Mojave Sand Dunes 14o Mojave Sand Dunes
14p Lower Grand Canyon 14p Lower Grand Canyon
15a Grave Creek Range-Nine Mile Divide 15a Grave Creek Range-Nine Mile Divide
15b Camas Valley 15b Camas Valley
15c Flathead Valley 15c Flathead Valley
15d Tobacco Plains 15d Tobacco Plains
15e Flathead Hills and Mountains 15e Flathead Hills and Mountains
15f Grassy Potlatch Ridges 15f Grassy Potlatch Ridges
15g Western Okanogan Semiarid Foothills 15g Western Okanogan Semiarid Foothills
15h High Northern Rockies 15h High Northern Rockies
15i Clearwater Mountains and Breaks 15i Clearwater Mountains and Breaks
15j Lower Clearwater Canyons 15j Lower Clearwater Canyons
15k Clark Fork Valley and Mountains 15k Clark Fork Valley and Mountains
15l Salish Mountains 15l Salish Mountains
15m Kootenai Valley 15m Kootenai Valley
15n Weippe Prairie 15n Weippe Prairie
15o Coeur d Alene Metasedimentary Zone 15o Coeur d Alene Metasedimentary Zone
15p St. Joe Schist-Gneiss Zone 15p St. Joe Schist-Gneiss Zone
15q Purcell-Cabinet-North Bitterroot Mountains 15q Purcell-Cabinet-North Bitterroot Mountains
15r Okanogan-Colville Xeric Valleys and Foothills 15r Okanogan-Colville Xeric Valleys and Foothills
15s Spokane Valley Outwash Plains 15s Spokane Valley Outwash Plains
15t Stillwater-Swan Wooded Valley 15t Stillwater-Swan Wooded Valley
15u Inland Maritime Foothills and Valleys 15u Inland Maritime Foothills and Valleys
15v Northern Idaho Hills and Low Relief Mountains 15v Northern Idaho Hills and Low Relief Mountains
15w Western Selkirk Maritime Forest 15w Western Selkirk Maritime Forest
15x Okanogan Highland Dry Forest 15x Okanogan Highland Dry Forest
15y Selkirk Mountains 15y Selkirk Mountains
16a Eastern Batholith 16a Eastern Batholith
16b Lochsa Uplands 16b Lochsa Uplands
16c Lochsa-Selway-Clearwater Canyons 16c Lochsa-Selway-Clearwater Canyons
16d Dry Partly Wooded Mountains 16d Dry Partly Wooded Mountains
16e Glaciated Bitterroot Mountains and Canyons 16e Glaciated Bitterroot Mountains and Canyons
16f Foothill Shrublands-Grasslands 16f Foothill Shrublands-Grasslands
16g High Glacial Drift-Filled Valleys 16g High Glacial Drift-Filled Valleys
16h High Idaho Batholith 16h High Idaho Batholith
16i South Clearwater Forested Mountains 16i South Clearwater Forested Mountains
16j Hot Dry Canyons 16j Hot Dry Canyons
16k Southern Forested Mountains 16k Southern Forested Mountains
17a Black Hills Foothills 17a Black Hills Foothills
17b Black Hills Plateau 17b Black Hills Plateau
17c Black Hills Core Highlands 17c Black Hills Core Highlands
17d Eastern Gravelly Mountains 17d Eastern Gravelly Mountains
17e Barren Mountains 17e Barren Mountains
17f Crazy Mountains 17f Crazy Mountains
17g Mid-elevation Sedimentary Mountains 17g Mid-elevation Sedimentary Mountains
17h Alpine Zone 17h Alpine Zone
17i Absaroka-Gallatin Volcanic Mountains 17i Absaroka-Gallatin Volcanic Mountains
17j Yellowstone Plateau 17j Yellowstone Plateau
17k Granitic Subalpine Zone 17k Granitic Subalpine Zone
17l Gneissic-Schistose Forested Mountains 17l Gneissic-Schistose Forested Mountains
17m Dry Mid-elevation Sedimentary Mountains 17m Dry Mid-elevation Sedimentary Mountains
17n High Elevation Valleys 17n High Elevation Valleys
17o Partly Forested Mountains 17o Partly Forested Mountains
17p Foothill Potholes 17p Foothill Potholes
17q Big Snowy-Little Belt Carbonate Mountains 17q Big Snowy-Little Belt Carbonate Mountains
17r Scattered Eastern Igneous-Core Mountains 17r Scattered Eastern Igneous-Core Mountains
17s Bitterroot-Frenchtown Valley 17s Bitterroot-Frenchtown Valley
17t Limy Foothill Savanna 17t Limy Foothill Savanna
17u Paradise Valley 17u Paradise Valley
17v Big Belt Forested Highlands 17v Big Belt Forested Highlands
17w Townsend Basin 17w Townsend Basin
17x Rattlesnake-Blackfoot-South Swan-Northern Garnet-Sapphire Mountains 17x Rattlesnake-Blackfoot-South Swan-Northern Garnet-Sapphire Mountains
17y Townsend-Horseshoe-London Sedimentary Hills 17y Townsend-Horseshoe-London Sedimentary Hills
17z Tobacco Root Mountains 17z Tobacco Root Mountains
17aa Dry Intermontane Sagebrush Valleys 17aa Dry Intermontane Sagebrush Valleys
17ab Dry Gneissic-Schistose-Volcanic Hills 17ab Dry Gneissic-Schistose-Volcanic Hills
17ac Big Hole 17ac Big Hole
17ad Western Beaverhead Mountains 17ad Western Beaverhead Mountains
17ae Forested Beaverhead Mountains 17ae Forested Beaverhead Mountains
17af Centennial Basin 17af Centennial Basin
17ag Pioneer-Anaconda Ranges 17ag Pioneer-Anaconda Ranges
17ah Eastern Pioneer Sedimentary Mountains 17ah Eastern Pioneer Sedimentary Mountains
17ai Elkhorn Mountains-Boulder Batholith 17ai Elkhorn Mountains-Boulder Batholith
17aj Eastern Divide Mountains 17aj Eastern Divide Mountains
17ak Deer Lodge-Philipsburg-Avon Grassy Intermontane Hills and Valleys 17ak Deer Lodge-Philipsburg-Avon Grassy Intermontane Hills and Valleys
17al Southern Garnet Sedimentary-Volcanic Mountains 17al Southern Garnet Sedimentary-Volcanic Mountains
17am Flint Creek-Anaconda Mountains 17am Flint Creek-Anaconda Mountains
17ao Absaroka Volcanic Subalpine Zone 17ao Absaroka Volcanic Subalpine Zone
17ap Sedimentary Subalpine Zone 17ap Sedimentary Subalpine Zone
18a Rolling Sagebrush Steppe 18a Rolling Sagebrush Steppe
18b Bighorn Basin 18b Bighorn Basin
18c Sub-Irrigated High Valleys 18c Sub-Irrigated High Valleys
18d Foothill Shrublands and Low Mountains 18d Foothill Shrublands and Low Mountains
18e Salt Desert Shrub Basins 18e Salt Desert Shrub Basins
18f Laramie Basin 18f Laramie Basin
18g Bighorn Salt Desert Shrub Basins 18g Bighorn Salt Desert Shrub Basins
19a Alpine Zone 19a Alpine Zone
19b Uinta Subalpine Forests 19b Uinta Subalpine Forests
19c Mid-Elevation Uinta Mountains 19c Mid-Elevation Uinta Mountains
19d Wasatch Montane Zone 19d Wasatch Montane Zone
19e High Plateaus 19e High Plateaus
19f Semiarid Foothills 19f Semiarid Foothills
19g Mountain Valleys 19g Mountain Valleys
20a Monticello-Cortez Uplands 20a Monticello-Cortez Uplands
20b Shale Deserts and Sedimentary Basins 20b Shale Deserts and Sedimentary Basins
20c Semiarid Benchlands and Canyonlands 20c Semiarid Benchlands and Canyonlands
20d Arid Canyonlands 20d Arid Canyonlands
20e Escarpments 20e Escarpments
20f Uinta Basin Floor 20f Uinta Basin Floor
20g Northern Uinta Basin Slopes 20g Northern Uinta Basin Slopes
20h Sand Deserts 20h Sand Deserts
20i Cold Desert Sagebrush-Grasslands 20i Cold Desert Sagebrush-Grasslands
21a Alpine Zone 21a Alpine Zone
21b Crystalline Subalpine Forests 21b Crystalline Subalpine Forests
21c Crystalline Mid-Elevation Forests 21c Crystalline Mid-Elevation Forests
21d Foothill Shrublands 21d Foothill Shrublands
21e Sedimentary Subalpine Forests 21e Sedimentary Subalpine Forests
21f Sedimentary Mid-Elevation Forests 21f Sedimentary Mid-Elevation Forests
21g Volcanic Subalpine Forests 21g Volcanic Subalpine Forests
21h Volcanic Mid-Elevation Forests 21h Volcanic Mid-Elevation Forests
21i Sagebrush Parks 21i Sagebrush Parks
21j Grassland Parks 21j Grassland Parks
22a San Luis Shrublands and Hills 22a San Luis Shrublands and Hills
22b San Luis Alluvial Flats and Wetlands 22b San Luis Alluvial Flats and Wetlands
22c Salt Flats 22c Salt Flats
22d Virgin/Shivwits Woodland 22d Virgin/Shivwits Woodland
22e Sand Dunes and Sand Sheets 22e Sand Dunes and Sand Sheets
22f Taos Plateau 22f Taos Plateau
22g Rio Grande Floodplain 22g Rio Grande Floodplain
22h North Central New Mexico Valleys and Mesas 22h North Central New Mexico Valleys and Mesas
22i San Juan/Chaco Tablelands and Mesas 22i San Juan/Chaco Tablelands and Mesas
22j Semiarid Tablelands 22j Semiarid Tablelands
22k Lava Malpais 22k Lava Malpais
22l Plains of San Agustin 22l Plains of San Agustin
22m Albuquerque Basin 22m Albuquerque Basin
22n Near-Rockies Valleys and Mesas 22n Near-Rockies Valleys and Mesas
22o Northeast Arizona Shrub-Grasslands 22o Northeast Arizona Shrub-Grasslands
22p Little Colorado Valley/Painted Desert 22p Little Colorado Valley/Painted Desert
22q Dinetah Tablelands 22q Dinetah Tablelands
22r Mesa Highlands 22r Mesa Highlands
22s Hopi Buttes 22s Hopi Buttes
22t Chinle Valley and Mesas 22t Chinle Valley and Mesas
22u Kaibito/Moenkopi Sandy Plateaus 22u Kaibito/Moenkopi Sandy Plateaus
22v Marble Platform 22v Marble Platform
22w Grand Canyon 22w Grand Canyon
22x Arizona Strip Plateaus 22x Arizona Strip Plateaus
22y Uinkaret/Aubrey Montane Conifer Forest 22y Uinkaret/Aubrey Montane Conifer Forest
22z Chino/Coconino Grasslands and Shrubsteppe 22z Chino/Coconino Grasslands and Shrubsteppe
22aa Hualapai/Coconino Woodlands 22aa Hualapai/Coconino Woodlands
23a Chihuahuan Desert Slopes 23a Chihuahuan Desert Slopes
23b Madrean Lower Montane Woodlands 23b Madrean Lower Montane Woodlands
23c Montane Conifer Forests 23c Montane Conifer Forests
23d Arizona/New Mexico Subalpine Forests 23d Arizona/New Mexico Subalpine Forests
23e Conifer Woodlands and Savannas 23e Conifer Woodlands and Savannas
23f Rocky Mountain Conifer Forests 23f Rocky Mountain Conifer Forests
23g Rocky Mountain Subalpine Forests 23g Rocky Mountain Subalpine Forests
23h Lower Mogollon Transition 23h Lower Mogollon Transition
23i Montane and Subalpine Grasslands 23i Montane and Subalpine Grasslands
23j Northern Woodlands and Sagebrush 23j Northern Woodlands and Sagebrush
23k Sunset Crater Volcanics 23k Sunset Crater Volcanics
23l Mogollon Transition Conifer Forests 23l Mogollon Transition Conifer Forests
24a Chihuahuan Basins and Playas 24a Chihuahuan Basins and Playas
24b Chihuahuan Desert Grasslands 24b Chihuahuan Desert Grasslands
24c Low Mountains and Bajadas 24c Low Mountains and Bajadas
24d Chihuahuan Montane Woodlands 24d Chihuahuan Montane Woodlands
24e Stockton Plateau 24e Stockton Plateau
24f Rio Grande Floodplain 24f Rio Grande Floodplain
24g Gypsiferous Dunes 24g Gypsiferous Dunes
24h Lava Malpais 24h Lava Malpais
25a Pine Ridge Escarpment 25a Pine Ridge Escarpment
25b Rolling Sand Plains 25b Rolling Sand Plains
25c Moderate Relief Plains 25c Moderate Relief Plains
25d Flat to Rolling Plains 25d Flat to Rolling Plains
25e Canadian/Cimarron High Plains 25e Canadian/Cimarron High Plains
25f Pine Bluffs and Hills 25f Pine Bluffs and Hills
25g Sandy and Silty Tablelands 25g Sandy and Silty Tablelands
25h Platte River Valley and Terraces 25h Platte River Valley and Terraces
25i Llano Estacado 25i Llano Estacado
25j Shinnery Sands 25j Shinnery Sands
25k Arid Llano Estacado 25k Arid Llano Estacado
25l Front Range Fans 25l Front Range Fans
26a Canadian/Cimarron Breaks 26a Canadian/Cimarron Breaks
26b Flat Tablelands and Valleys 26b Flat Tablelands and Valleys
26c Caprock Canyons, Badlands, and Breaks 26c Caprock Canyons, Badlands, and Breaks
26d Semiarid Canadian Breaks 26d Semiarid Canadian Breaks
26e Piedmont Plains and Tablelands 26e Piedmont Plains and Tablelands
26f Mesa de Maya/Black Mesa 26f Mesa de Maya/Black Mesa
26g Purgatoire Hills and Canyons 26g Purgatoire Hills and Canyons
26h Pinyon-Juniper Woodlands and Savannas 26h Pinyon-Juniper Woodlands and Savannas
26i Pine-Oak Woodlands 26i Pine-Oak Woodlands
26j Foothill Grasslands 26j Foothill Grasslands
26k Sandsheets 26k Sandsheets
26l Upper Canadian Plateau 26l Upper Canadian Plateau
26m Canadian Canyons 26m Canadian Canyons
26n Conchas/Pecos Plains 26n Conchas/Pecos Plains
26o Central New Mexico Plains 26o Central New Mexico Plains
26p Pluvial Lake Basins 26p Pluvial Lake Basins
26q Southern New Mexico Dissected Plains 26q Southern New Mexico Dissected Plains
27a Smoky Hills 27a Smoky Hills
27b Rolling Plains and Breaks 27b Rolling Plains and Breaks
27c Great Bend Sand Prairie 27c Great Bend Sand Prairie
27d Prairie Tableland 27d Prairie Tableland
27e Central Nebraska Loess Plains 27e Central Nebraska Loess Plains
27f Rainwater Basin Plains 27f Rainwater Basin Plains
27g Platte River Valley 27g Platte River Valley
27h Red Prairie 27h Red Prairie
27i Broken Red Plains 27i Broken Red Plains
27j Limestone Plains 27j Limestone Plains
27k Wichita Mountains 27k Wichita Mountains
27l Pleistocene Sand Dunes 27l Pleistocene Sand Dunes
27m Red River Tablelands 27m Red River Tablelands
27n Gypsum Hills 27n Gypsum Hills
27o Cross Timbers Transition 27o Cross Timbers Transition
27p Salt Plains 27p Salt Plains
27q Rolling Red Hills 27q Rolling Red Hills
27r Limestone Hills 27r Limestone Hills
28a Flint Hills 28a Flint Hills
29a Northern Cross Timbers 29a Northern Cross Timbers
29b Eastern Cross Timbers 29b Eastern Cross Timbers
29c Western Cross Timbers 29c Western Cross Timbers
29d Grand Prairie 29d Grand Prairie
29e Limestone Cut Plain 29e Limestone Cut Plain
29f Carbonate Cross Timbers 29f Carbonate Cross Timbers
29g Arbuckle Uplift 29g Arbuckle Uplift
29h Northwestern Cross Timbers 29h Northwestern Cross Timbers
29i Arbuckle Mountains 29i Arbuckle Mountains
30a Edwards Plateau Woodland 30a Edwards Plateau Woodland
30b Llano Uplift 30b Llano Uplift
30c Balcones Canyonlands 30c Balcones Canyonlands
30d Semiarid Edwards Plateau 30d Semiarid Edwards Plateau
31a Northern Nueces Alluvial Plains 31a Northern Nueces Alluvial Plains
31b Semiarid Edwards Bajada 31b Semiarid Edwards Bajada
31c Texas-Tamaulipan Thornscrub 31c Texas-Tamaulipan Thornscrub
31d Rio Grande Floodplain and Terraces 31d Rio Grande Floodplain and Terraces
32a Northern Blackland Prairie 32a Northern Blackland Prairie
32b Southern Blackland/Fayette Prairie 32b Southern Blackland/Fayette Prairie
32c Floodplains and Low Terraces 32c Floodplains and Low Terraces
33a Northern Post Oak Savanna 33a Northern Post Oak Savanna
33b Southern Post Oak Savanna 33b Southern Post Oak Savanna
33c San Antonio Prairie 33c San Antonio Prairie
33d Northern Prairie Outliers 33d Northern Prairie Outliers
33e Bastrop Lost Pines 33e Bastrop Lost Pines
33f Floodplains and Low Terraces 33f Floodplains and Low Terraces
34a Northern Humid Gulf Coastal Prairies 34a Northern Humid Gulf Coastal Prairies
34b Southern Subhumid Gulf Coastal Prairies 34b Southern Subhumid Gulf Coastal Prairies
34c Floodplains and Low Terraces 34c Floodplains and Low Terraces
34d Coastal Sand Plain 34d Coastal Sand Plain
34e Lower Rio Grande Valley 34e Lower Rio Grande Valley
34f Lower Rio Grande Alluvial Floodplain 34f Lower Rio Grande Alluvial Floodplain
34g Texas-Louisiana Coastal Marshes 34g Texas-Louisiana Coastal Marshes
34h Mid-Coast Barrier Islands and Coastal Marshes 34h Mid-Coast Barrier Islands and Coastal Marshes
34i Laguna Madre Barrier Islands and Coastal Marshes 34i Laguna Madre Barrier Islands and Coastal Marshes
34j Lafayette Loess Plains 34j Lafayette Loess Plains
35a Tertiary Uplands 35a Tertiary Uplands
35b Floodplains and Low Terraces 35b Floodplains and Low Terraces
35c Pleistocene Fluvial Terraces 35c Pleistocene Fluvial Terraces
35d Cretaceous Dissected Uplands 35d Cretaceous Dissected Uplands
35e Southern Tertiary Uplands 35e Southern Tertiary Uplands
35f Flatwoods 35f Flatwoods
35g Red River Bottomlands 35g Red River Bottomlands
35h Blackland Prairie 35h Blackland Prairie
36a Athens Plateau 36a Athens Plateau
36b Central Mountain Ranges 36b Central Mountain Ranges
36c Central Hills, Ridges, and Valleys 36c Central Hills, Ridges, and Valleys
36d Fourche Mountains 36d Fourche Mountains
36e Western Ouachitas 36e Western Ouachitas
36f Western Ouachita Valleys 36f Western Ouachita Valleys
37a Scattered High Ridges and Mountains 37a Scattered High Ridges and Mountains
37b Arkansas River Floodplain 37b Arkansas River Floodplain
37c Arkansas Valley Hills 37c Arkansas Valley Hills
37e Lower Canadian Hills 37e Lower Canadian Hills
37d Arkansas Valley Plains 37d Arkansas Valley Plains
38a Upper Boston Mountains 38a Upper Boston Mountains
38b Lower Boston Mountains 38b Lower Boston Mountains
39a Springfield Plateau 39a Springfield Plateau
39b Dissected Springfield Plateau-Elk River Hills 39b Dissected Springfield Plateau-Elk River Hills
39c White River Hills 39c White River Hills
39d Central Plateau 39d Central Plateau
39e Osage/Gasconade Hills 39e Osage/Gasconade Hills
39f St. Francois Knobs and Basins 39f St. Francois Knobs and Basins
39g Meramec River Hills 39g Meramec River Hills
39h Current River Hills 39h Current River Hills
39i Eastern Ozark Border 39i Eastern Ozark Border
39j Black River Hills Border 39j Black River Hills Border
39k Prairie Ozark Border 39k Prairie Ozark Border
40a Loess Flats and Till Plains 40a Loess Flats and Till Plains
40b Osage Cuestas 40b Osage Cuestas
40c Wooded Osage Plains 40c Wooded Osage Plains
40d Cherokee Plains 40d Cherokee Plains
40e Claypan Prairie 40e Claypan Prairie
41a Northern Front 41a Northern Front
41b Crestal Alpine-Subalpine Zone 41b Crestal Alpine-Subalpine Zone
41c Western Canadian Rockies 41c Western Canadian Rockies
41d Southern Carbonate Front 41d Southern Carbonate Front
41e Flathead Thrust Faulted Carbonate-Rich Mountains 41e Flathead Thrust Faulted Carbonate-Rich Mountains
42a Missouri Coteau 42a Missouri Coteau
42b Collapsed Glacial Outwash 42b Collapsed Glacial Outwash
42c Missouri Coteau Slope 42c Missouri Coteau Slope
42d Northern Missouri Coteau 42d Northern Missouri Coteau
42e Southern Missouri Coteau 42e Southern Missouri Coteau
42f Southern Missouri Coteau Slope 42f Southern Missouri Coteau Slope
42g Ponca Plains 42g Ponca Plains
42h Southern River Breaks 42h Southern River Breaks
42i Glaciated Dark Brown Prairie 42i Glaciated Dark Brown Prairie
42j Glaciated Northern Grasslands 42j Glaciated Northern Grasslands
42k Coteau Lakes Upland 42k Coteau Lakes Upland
42l Sweetgrass Uplands 42l Sweetgrass Uplands
42m Cherry Patch Moraines 42m Cherry Patch Moraines
42n Milk River Pothole Upland 42n Milk River Pothole Upland
42o North Central Brown Glaciated Plains 42o North Central Brown Glaciated Plains
42p Holt Tablelands 42p Holt Tablelands
42q Rocky Mountain Front Foothill Potholes 42q Rocky Mountain Front Foothill Potholes
42r Foothill Grassland 42r Foothill Grassland
43a Missouri Plateau 43a Missouri Plateau
43b Little Missouri Badlands 43b Little Missouri Badlands
43c River Breaks 43c River Breaks
43d Forested Buttes 43d Forested Buttes
43e Sagebrush Steppe 43e Sagebrush Steppe
43f Subhumid Pierre Shale Plains 43f Subhumid Pierre Shale Plains
43g Semiarid Pierre Shale Plains 43g Semiarid Pierre Shale Plains
43h White River Badlands 43h White River Badlands
43i Keya Paha Tablelands 43i Keya Paha Tablelands
43j Moreau Prairie 43j Moreau Prairie
43k Dense Clay Prairie 43k Dense Clay Prairie
43l Missouri Breaks Woodland-Scrubland 43l Missouri Breaks Woodland-Scrubland
43m Judith Basin Grassland 43m Judith Basin Grassland
43n Montana Central Grasslands 43n Montana Central Grasslands
43o Unglaciated Montana High Plains 43o Unglaciated Montana High Plains
43p Pine Scoria Hills 43p Pine Scoria Hills
43q Mesic Dissected Plains 43q Mesic Dissected Plains
43r Niobrara River Breaks 43r Niobrara River Breaks
43s Non-calcareous Foothill Grassland 43s Non-calcareous Foothill Grassland
43t Shield-Smith Valleys 43t Shield-Smith Valleys
43u Limy Foothill Grassland 43u Limy Foothill Grassland
43v Pryor-Bighorn Foothills 43v Pryor-Bighorn Foothills
43w Powder River Basin 43w Powder River Basin
43x Casper Arch 43x Casper Arch
44a Sand Hills 44a Sand Hills
44b Alkaline Lakes Area 44b Alkaline Lakes Area
44c Wet Meadow and Marsh Plain 44c Wet Meadow and Marsh Plain
44d Lakes Area 44d Lakes Area
45a Southern Inner Piedmont 45a Southern Inner Piedmont
45b Southern Outer Piedmont 45b Southern Outer Piedmont
45c Carolina Slate Belt 45c Carolina Slate Belt
45d Talladega Upland 45d Talladega Upland
45e Northern Inner Piedmont 45e Northern Inner Piedmont
45f Northern Outer Piedmont 45f Northern Outer Piedmont
45g Triassic Basins 45g Triassic Basins
45h Pine Mountain Ridges 45h Pine Mountain Ridges
45i Kings Mountain 45i Kings Mountain
46a Pembina Escarpment 46a Pembina Escarpment
46b Turtle Mountains 46b Turtle Mountains
46c Glacial Lake Basins 46c Glacial Lake Basins
46d Glacial Lake Deltas 46d Glacial Lake Deltas
46e Tewaukon/Big Stone Stagnation Moraine 46e Tewaukon/Big Stone Stagnation Moraine
46f End Moraine Complex 46f End Moraine Complex
46g Northern Black Prairie 46g Northern Black Prairie
46h Northern Dark Brown Prairie 46h Northern Dark Brown Prairie
46i Drift Plains 46i Drift Plains
46j Glacial Outwash 46j Glacial Outwash
46k Prairie Coteau 46k Prairie Coteau
46l Prairie Coteau Escarpment 46l Prairie Coteau Escarpment
46m Big Sioux Basin 46m Big Sioux Basin
46n James River Lowland 46n James River Lowland
46o Minnesota River Prairie 46o Minnesota River Prairie
47a Loess Prairies 47a Loess Prairies
47b Des Moines Lobe 47b Des Moines Lobe
47c Eastern Iowa and Minnesota Drift Plains 47c Eastern Iowa and Minnesota Drift Plains
47d Missouri Alluvial Plain 47d Missouri Alluvial Plain
47e Steeply Rolling Loess Prairies 47e Steeply Rolling Loess Prairies
47f Rolling Loess Prairies 47f Rolling Loess Prairies
47g Lower St. Croix and Vermillion Valleys 47g Lower St. Croix and Vermillion Valleys
47h Nebraska/Kansas Loess Hills 47h Nebraska/Kansas Loess Hills
47i Loess and Glacial Drift Hills 47i Loess and Glacial Drift Hills
47j Lower Platte Alluvial Plain 47j Lower Platte Alluvial Plain
47k Northeastern Nebraska Loess Hills 47k Northeastern Nebraska Loess Hills
47l Transitional Sandy Plain 47l Transitional Sandy Plain
47m Western Loess Hills 47m Western Loess Hills
48a Glacial Lake Agassiz Basin 48a Glacial Lake Agassiz Basin
48b Beach Ridges and Sand Deltas 48b Beach Ridges and Sand Deltas
48c Saline Area 48c Saline Area
48d Lake Agassiz Plains 48d Lake Agassiz Plains
49a Peatlands 49a Peatlands
49b Forested Lake Plains 49b Forested Lake Plains
50a Lake Superior Clay Plain 50a Lake Superior Clay Plain
50b Minnesota/Wisconsin Upland Till Plain 50b Minnesota/Wisconsin Upland Till Plain
50c St. Croix Pine Barrens 50c St. Croix Pine Barrens
50d Superior Mineral Ranges 50d Superior Mineral Ranges
50e Chequamegon Moraines and Outwash Plain 50e Chequamegon Moraines and Outwash Plain
50f Blue Hills 50f Blue Hills
50g Chippewa Lobe Rocky Ground Moraines 50g Chippewa Lobe Rocky Ground Moraines
50h Perkinstown End Moraines 50h Perkinstown End Moraines
50i Northern Wisconsin Highlands Lakes Country 50i Northern Wisconsin Highlands Lakes Country
50j Brule and Paint River Drumlins 50j Brule and Paint River Drumlins
50k Wisconsin/Michigan Pine Barrens 50k Wisconsin/Michigan Pine Barrens
50l Menominee Drumlins and Ground Moraine 50l Menominee Drumlins and Ground Moraine
50m Mesabi Range 50m Mesabi Range
50n Boundary Lakes and Hills 50n Boundary Lakes and Hills
50o Glacial Lakes Upham and Aitken 50o Glacial Lakes Upham and Aitken
50p Toimi Drumlins 50p Toimi Drumlins
50q Itasca and St. Louis Moraines 50q Itasca and St. Louis Moraines
50r Chippewa Plains 50r Chippewa Plains
50s Nashwauk/Marcell Moraines and Uplands 50s Nashwauk/Marcell Moraines and Uplands
50t North Shore Highlands 50t North Shore Highlands
50u Keweenaw-Baraga Moraines 50u Keweenaw-Baraga Moraines
50v Winegar Dead Ice Moraine 50v Winegar Dead Ice Moraine
50w Michigamme Highland 50w Michigamme Highland
50x Grand Marais Lakeshore 50x Grand Marais Lakeshore
50y Seney-Tahquamenon Sand Plain 50y Seney-Tahquamenon Sand Plain
50z Rudyard Clay Plain 50z Rudyard Clay Plain
50aa Menominee-Drummond Lakeshore 50aa Menominee-Drummond Lakeshore
50ab Cheboygan Lake Plain 50ab Cheboygan Lake Plain
50ac Onaway Moraines 50ac Onaway Moraines
50ad Vanderbilt Moraines 50ad Vanderbilt Moraines
50ae Mio Plateau 50ae Mio Plateau
50af Cadillac Hummocky Moraines 50af Cadillac Hummocky Moraines
50ag Newaygo Barrens 50ag Newaygo Barrens
50ah Tawas Lake Plain 50ah Tawas Lake Plain
51a St. Croix Stagnation Moraines 51a St. Croix Stagnation Moraines
51b Central Wisconsin Undulating Till Plain 51b Central Wisconsin Undulating Till Plain
51c Glacial Lake Wisconsin Sand Plain 51c Glacial Lake Wisconsin Sand Plain
51d Central Sand Ridges 51d Central Sand Ridges
51e Upper Wolf River Stagnation Moraine 51e Upper Wolf River Stagnation Moraine
51f Green Bay Till and Lacustrine Plain 51f Green Bay Till and Lacustrine Plain
51g Door Peninsula 51g Door Peninsula
51h Anoka Sand Plain and Mississippi Valley Outwash 51h Anoka Sand Plain and Mississippi Valley Outwash
51i Big Woods 51i Big Woods
51j Alexandria Moraines and Detroit Lakes Outwash Plain 51j Alexandria Moraines and Detroit Lakes Outwash Plain
51k McGrath Till Plain and Drumlins 51k McGrath Till Plain and Drumlins
51l Wadena/Todd Drumlins and Osakis Till Plain 51l Wadena/Todd Drumlins and Osakis Till Plain
51m Manistee-Leelanau Shore 51m Manistee-Leelanau Shore
51n Platte River Outwash 51n Platte River Outwash
52a Savanna Section 52a Savanna Section
52b Blufflands and Coulees 52b Blufflands and Coulees
52c Rochester/Paleozoic Plateau Upland 52c Rochester/Paleozoic Plateau Upland
53a Rock River Drift Plain 53a Rock River Drift Plain
53b Kettle Moraines 53b Kettle Moraines
53c Southeastern Wisconsin Savannah and Till Plain 53c Southeastern Wisconsin Savannah and Till Plain
53d Lake Michigan Lacustrine Clay Plain 53d Lake Michigan Lacustrine Clay Plain
54a Illinois/Indiana Prairies 54a Illinois/Indiana Prairies
54b Chicago Lake Plain 54b Chicago Lake Plain
54c Kankakee Marsh 54c Kankakee Marsh
54d Sand Area 54d Sand Area
54e Chiwaukee Prairie Region 54e Chiwaukee Prairie Region
54f Valparaiso-Wheaton Morainal Complex 54f Valparaiso-Wheaton Morainal Complex
54g Rock River Hills 54g Rock River Hills
55a Clayey High Lime Till Plains 55a Clayey High Lime Till Plains
55b Loamy High Lime Till Plains 55b Loamy High Lime Till Plains
55c Mad River Interlobate Area 55c Mad River Interlobate Area
55d Pre-Wisconsinan Drift Plains 55d Pre-Wisconsinan Drift Plains
55e Darby Plains 55e Darby Plains
55f Whitewater Interlobate Area 55f Whitewater Interlobate Area
56a Northern Indiana Lake Country 56a Northern Indiana Lake Country
56b Battle Creek/Elkhart Outwash Plain 56b Battle Creek/Elkhart Outwash Plain
56c Middle Tippecanoe Plains 56c Middle Tippecanoe Plains
56d Michigan Lake Plain 56d Michigan Lake Plain
56f Lake Michigan Moraines 56f Lake Michigan Moraines
56g Lansing Loamy Plain 56g Lansing Loamy Plain
56h Interlobate Dead Ice Moraines 56h Interlobate Dead Ice Moraines
57a Maumee Lake Plain 57a Maumee Lake Plain
57b Oak Openings 57b Oak Openings
57c Paulding Plains 57c Paulding Plains
57d Marblehead Drift/Limestone Plain 57d Marblehead Drift/Limestone Plain
57e Saginaw Lake Plain 57e Saginaw Lake Plain
58a Taconic Mountains 58a Taconic Mountains
58b Western New England Marble Valleys 58b Western New England Marble Valleys
58c Green Mountains/Berkshire Highlands 58c Green Mountains/Berkshire Highlands
58d Lower Berkshire Hills 58d Lower Berkshire Hills
58e Berkshire Transition 58e Berkshire Transition
58f Vermont Piedmont 58f Vermont Piedmont
58g Worchester/Monadnock Plateau 58g Worchester/Monadnock Plateau
58h Reading Prong 58h Reading Prong
58i Glaciated Reading Prong/Hudson Highlands 58i Glaciated Reading Prong/Hudson Highlands
58j Upper Montane/Alpine Zone 58j Upper Montane/Alpine Zone
58k Green Mountain Foothills 58k Green Mountain Foothills
58l Northern Piedmont 58l Northern Piedmont
58m Quebec/New England Boundary Mountains 58m Quebec/New England Boundary Mountains
58n White Mountain Foothills 58n White Mountain Foothills
58o Northern Connecticut Valley 58o Northern Connecticut Valley
58p White Mountains/Blue Mountains 58p White Mountains/Blue Mountains
58q Sunapee Uplands 58q Sunapee Uplands
58r Sebago-Ossipee Hills and Plains 58r Sebago-Ossipee Hills and Plains
58s Western Maine Foothills 58s Western Maine Foothills
58t Upper St. John Wet Flats 58t Upper St. John Wet Flats
58u Moosehead-Churchill Lakes 58u Moosehead-Churchill Lakes
58v St. John Uplands 58v St. John Uplands
58w International Boundary Plateau 58w International Boundary Plateau
58x Taconic Foothills 58x Taconic Foothills
58y Catskill High Peaks 58y Catskill High Peaks
58z Adirondack High Peaks 58z Adirondack High Peaks
58aa Acid Sensitive Adirondacks 58aa Acid Sensitive Adirondacks
58ab Northern and Western Adirondack Foothills 58ab Northern and Western Adirondack Foothills
58ac Eastern Adirondack Foothills 58ac Eastern Adirondack Foothills
58ad Central Adirondacks 58ad Central Adirondacks
58ae Tug Hill Plateau 58ae Tug Hill Plateau
58af Tug Hill Transition 58af Tug Hill Transition
58ag Rensselaer Plateau 58ag Rensselaer Plateau
59a Connecticut Valley 59a Connecticut Valley
59b Lower Worcester Plateau/Eastern Connecticut Upland 59b Lower Worcester Plateau/Eastern Connecticut Upland
59c Southern New England Coastal Plains and Hills 59c Southern New England Coastal Plains and Hills
59d Boston Basin 59d Boston Basin
59e Narragansett/Bristol Lowland 59e Narragansett/Bristol Lowland
59f Gulf of Maine Coastal Lowland 59f Gulf of Maine Coastal Lowland
59g Long Island Sound Coastal Lowland 59g Long Island Sound Coastal Lowland
59h Gulf of Maine Coastal Plain 59h Gulf of Maine Coastal Plain
59i Hudson Valley 59i Hudson Valley
60a Glaciated Low Allegheny Plateau 60a Glaciated Low Allegheny Plateau
60b Delaware-Neversink Highlands 60b Delaware-Neversink Highlands
60c Catskills Transition 60c Catskills Transition
60d Finger Lakes Uplands and Gorges 60d Finger Lakes Uplands and Gorges
60e Glaciated Allegheny Hills 60e Glaciated Allegheny Hills
60f Cattaraugus Hills 60f Cattaraugus Hills
61b Mosquito Creek/Pymatuning Lowlands 61b Mosquito Creek/Pymatuning Lowlands
61c Low Lime Drift Plain 61c Low Lime Drift Plain
61d Erie Gorges 61d Erie Gorges
61e Summit Interlobate Area 61e Summit Interlobate Area
62a Pocono High Plateau 62a Pocono High Plateau
62b Low Poconos 62b Low Poconos
62c Glaciated High Allegheny Plateau 62c Glaciated High Allegheny Plateau
62d Unglaciated High Allegheny Plateau 62d Unglaciated High Allegheny Plateau
63a Delaware River Terraces and Uplands 63a Delaware River Terraces and Uplands
63b Chesapeake-Pamlico Lowlands and Tidal Marshes 63b Chesapeake-Pamlico Lowlands and Tidal Marshes
63c Swamps and Peatlands 63c Swamps and Peatlands
63d Virginian Barrier Islands and Coastal Marshes 63d Virginian Barrier Islands and Coastal Marshes
63e Mid-Atlantic Flatwoods 63e Mid-Atlantic Flatwoods
63f Delmarva Uplands 63f Delmarva Uplands
63g Carolinian Barrier Islands and Coastal Marshes 63g Carolinian Barrier Islands and Coastal Marshes
63h Carolina Flatwoods 63h Carolina Flatwoods
63n Mid-Atlantic Floodplains and Low Terraces 63n Mid-Atlantic Floodplains and Low Terraces
64a Triassic Lowlands 64a Triassic Lowlands
64b Trap Rock and Conglomerate Uplands 64b Trap Rock and Conglomerate Uplands
64c Piedmont Uplands 64c Piedmont Uplands
64d Piedmont Limestone/Dolomite Lowlands 64d Piedmont Limestone/Dolomite Lowlands
64e Glaciated Triassic Lowlands 64e Glaciated Triassic Lowlands
64f Passaic Basin Freshwater Wetlands 64f Passaic Basin Freshwater Wetlands
64g Hackensack Meadowlands 64g Hackensack Meadowlands
65a Blackland Prairie 65a Blackland Prairie
65b Flatwoods/Blackland Prairie Margins 65b Flatwoods/Blackland Prairie Margins
65c Sand Hills 65c Sand Hills
65d Southern Hilly Gulf Coastal Plain 65d Southern Hilly Gulf Coastal Plain
65e Northern Hilly Gulf Coastal Plain 65e Northern Hilly Gulf Coastal Plain
65f Southern Pine Plains and Hills 65f Southern Pine Plains and Hills
65g Dougherty Plain 65g Dougherty Plain
65h Tifton Upland 65h Tifton Upland
65i Fall Line Hills 65i Fall Line Hills
65j Transition Hills 65j Transition Hills
65k Coastal Plain Red Uplands 65k Coastal Plain Red Uplands
65l Atlantic Southern Loam Plains 65l Atlantic Southern Loam Plains
65m Rolling Coastal Plain 65m Rolling Coastal Plain
65n Chesapeake Rolling Coastal Plain 65n Chesapeake Rolling Coastal Plain
65o Tallahasee Hills/Valdosta Limesink 65o Tallahasee Hills/Valdosta Limesink
65p Southeastern Floodplains and Low Terraces 65p Southeastern Floodplains and Low Terraces
65q Buhrstone/Lime Hills 65q Buhrstone/Lime Hills
65r Jackson Prairie 65r Jackson Prairie
66a Northern Igneous Ridges 66a Northern Igneous Ridges
66b Northern Sedimentary and Metasedimentary Ridges 66b Northern Sedimentary and Metasedimentary Ridges
66c New River Plateau 66c New River Plateau
66d Southern Crystalline Ridges and Mountains 66d Southern Crystalline Ridges and Mountains
66e Southern Sedimentary Ridges 66e Southern Sedimentary Ridges
66f Limestone Valleys and Coves 66f Limestone Valleys and Coves
66g Southern Metasedimentary Mountains 66g Southern Metasedimentary Mountains
66i High Mountains 66i High Mountains
66j Broad Basins 66j Broad Basins
66k Amphibolite Mountains 66k Amphibolite Mountains
66l Eastern Blue Ridge Foothills 66l Eastern Blue Ridge Foothills
66m Sauratown Mountains 66m Sauratown Mountains
67a Northern Limestone/Dolomite Valleys 67a Northern Limestone/Dolomite Valleys
67b Northern Shale Valleys 67b Northern Shale Valleys
67c Northern Sandstone Ridges 67c Northern Sandstone Ridges
67d Northern Dissected Ridges and Knobs 67d Northern Dissected Ridges and Knobs
67e Anthracite Subregion 67e Anthracite Subregion
67f Southern Limestone/Dolomite Valleys and Low Rolling Hills 67f Southern Limestone/Dolomite Valleys and Low Rolling Hills
67g Southern Shale Valleys 67g Southern Shale Valleys
67h Southern Sandstone Ridges 67h Southern Sandstone Ridges
67i Southern Dissected Ridges and Knobs 67i Southern Dissected Ridges and Knobs
67j Northern Glaciated Limestone Valleys 67j Northern Glaciated Limestone Valleys
67k Northern Glaciated Shale and Slate Valleys 67k Northern Glaciated Shale and Slate Valleys
67l Northern Glaciated Limestone Ridges, Valleys, and Terraces 67l Northern Glaciated Limestone Ridges, Valleys, and Terraces
67m Northern Glaciated Ridges 67m Northern Glaciated Ridges
68a Cumberland Plateau 68a Cumberland Plateau
68b Sequatchie Valley 68b Sequatchie Valley
68c Plateau Escarpment 68c Plateau Escarpment
68d Southern Table Plateaus 68d Southern Table Plateaus
68e Dissected Plateau 68e Dissected Plateau
68f Shale Hills 68f Shale Hills
69a Forested Hills and Mountains 69a Forested Hills and Mountains
69b Uplands and Valleys of Mixed Land Use 69b Uplands and Valleys of Mixed Land Use
69c Greenbriar Karst 69c Greenbriar Karst
69d Dissected Appalachian Plateau 69d Dissected Appalachian Plateau
69e Cumberland Mountain Thrust Block 69e Cumberland Mountain Thrust Block
70a Permian Hills 70a Permian Hills
70b Monongahela Transition Zone 70b Monongahela Transition Zone
70c Pittsburgh Low Plateau 70c Pittsburgh Low Plateau
70d Knobs-Lower Scioto Dissected Plateau 70d Knobs-Lower Scioto Dissected Plateau
70e Unglaciated Upper Muskingum Basin 70e Unglaciated Upper Muskingum Basin
70f Ohio/Kentucky Carboniferous Plateau 70f Ohio/Kentucky Carboniferous Plateau
70g Northern Forested Plateau Escarpment 70g Northern Forested Plateau Escarpment
70h Carter Hills 70h Carter Hills
71a Crawford-Mammoth Cave Uplands 71a Crawford-Mammoth Cave Uplands
71b Mitchell Plain 71b Mitchell Plain
71c Knobs-Norman Upland 71c Knobs-Norman Upland
71d Outer Bluegrass 71d Outer Bluegrass
71e Western Pennyroyal Karst Plain 71e Western Pennyroyal Karst Plain
71f Western Highland Rim 71f Western Highland Rim
71g Eastern Highland Rim 71g Eastern Highland Rim
71h Outer Nashville Basin 71h Outer Nashville Basin
71i Inner Nashville Basin 71i Inner Nashville Basin
71j Little Mountain 71j Little Mountain
71k Hills of the Bluegrass 71k Hills of the Bluegrass
71l Inner Bluegrass 71l Inner Bluegrass
71m Northern Shawnee Hills 71m Northern Shawnee Hills
71n Southern Shawnee Hills 71n Southern Shawnee Hills
72a Wabash-Ohio Bottomlands 72a Wabash-Ohio Bottomlands
72b Glaciated Wabash Lowlands 72b Glaciated Wabash Lowlands
72c Green River-Southern Wabash Lowlands 72c Green River-Southern Wabash Lowlands
72d Upper Mississippi Alluvial Plain 72d Upper Mississippi Alluvial Plain
72e Middle Mississippi Alluvial Plain 72e Middle Mississippi Alluvial Plain
72f River Hills 72f River Hills
72g Southern Ozarkian River Bluffs 72g Southern Ozarkian River Bluffs
72h Caseyville Hills 72h Caseyville Hills
72i Western Dissected Illinoian Till Plain 72i Western Dissected Illinoian Till Plain
72j Southern Illinoian Till Plain 72j Southern Illinoian Till Plain
72k Cretaceous Hills 72k Cretaceous Hills
72l Karstic Northern Ozarkian River Bluffs 72l Karstic Northern Ozarkian River Bluffs
72m Wabash River Bluffs and Low Hills 72m Wabash River Bluffs and Low Hills
73a Northern Holocene Meander Belts 73a Northern Holocene Meander Belts
73b Northern Pleistocene Valley Trains 73b Northern Pleistocene Valley Trains
73c St. Francis Lowlands 73c St. Francis Lowlands
73d Northern Backswamps 73d Northern Backswamps
73e Grand Prairie 73e Grand Prairie
73f Western Lowlands Holocene Meander Belts 73f Western Lowlands Holocene Meander Belts
73g Western Lowlands Pleistocene Valley Trains 73g Western Lowlands Pleistocene Valley Trains
73h Arkansas/Ouachita River Holocene Meander Belts 73h Arkansas/Ouachita River Holocene Meander Belts
73i Arkansas/Ouachita River Backswamps 73i Arkansas/Ouachita River Backswamps
73j Macon Ridge 73j Macon Ridge
73k Southern Holocene Meander Belts 73k Southern Holocene Meander Belts
73l Southern Pleistocene Valley Trains 73l Southern Pleistocene Valley Trains
73m Southern Backswamps 73m Southern Backswamps
73n Inland Swamps 73n Inland Swamps
73o Deltaic Coastal Marshes and Barrier Islands 73o Deltaic Coastal Marshes and Barrier Islands
74a Bluff Hills 74a Bluff Hills
74b Loess Plains 74b Loess Plains
74c Southern Rolling Plains 74c Southern Rolling Plains
74d Baton Rouge Terrace 74d Baton Rouge Terrace
75a Gulf Coast Flatwoods 75a Gulf Coast Flatwoods
75b Southwestern Florida Flatwoods 75b Southwestern Florida Flatwoods
75c Central Florida Ridges and Uplands 75c Central Florida Ridges and Uplands
75d Eastern Florida Flatwoods 75d Eastern Florida Flatwoods
75e Okefenokee Plains 75e Okefenokee Plains
75f Sea Island Flatwoods 75f Sea Island Flatwoods
75g Okefenokee Swamp 75g Okefenokee Swamp
75h Bacon Terraces 75h Bacon Terraces
75i Floodplains and Low Terraces 75i Floodplains and Low Terraces
75j Sea Islands/Coastal Marsh 75j Sea Islands/Coastal Marsh
75k Gulf Barrier Islands and Coastal Marshes 75k Gulf Barrier Islands and Coastal Marshes
75l Big Bend Coastal Marsh 75l Big Bend Coastal Marsh
76a Everglades 76a Everglades
76b Big Cypress 76b Big Cypress
76c Miami Ridge/Atlantic Coastal Strip 76c Miami Ridge/Atlantic Coastal Strip
76d Southern Coast and Islands 76d Southern Coast and Islands
77a North Cascades Lowland Forests 77a North Cascades Lowland Forests
77b North Cascades Highland Forests 77b North Cascades Highland Forests
77c North Cascades Subalpine/Alpine 77c North Cascades Subalpine/Alpine
77d Pasayten/Sawtooth Highlands 77d Pasayten/Sawtooth Highlands
77e Okanogan Pine/Fir Hills 77e Okanogan Pine/Fir Hills
77f Chelan Tephra Hills 77f Chelan Tephra Hills
77g Wenatchee/Chelan Highlands 77g Wenatchee/Chelan Highlands
77h Chiwaukum Hills and Lowlands 77h Chiwaukum Hills and Lowlands
77i High Olympics 77i High Olympics
78a Rogue/Illinois/Scott Valleys 78a Rogue/Illinois/Scott Valleys
78b Oak Savanna Foothills 78b Oak Savanna Foothills
78c Umpqua Interior Foothills 78c Umpqua Interior Foothills
78d Serpentine Siskiyous 78d Serpentine Siskiyous
78e Inland Siskiyous 78e Inland Siskiyous
78f Coastal Siskiyous 78f Coastal Siskiyous
78g Klamath River Ridges 78g Klamath River Ridges
78h Border High-Siskiyous 78h Border High-Siskiyous
78i Western Klamath Low Elevation Forests 78i Western Klamath Low Elevation Forests
78j Western Klamath Montane Forests 78j Western Klamath Montane Forests
78k Eastern Klamath Low Elevation Forests 78k Eastern Klamath Low Elevation Forests
78l Eastern Klamath Montane Forests 78l Eastern Klamath Montane Forests
78m Marble/Salmon Mountains-Trinity Alps 78m Marble/Salmon Mountains-Trinity Alps
78n Scott Mountains 78n Scott Mountains
78o Klamath Subalpine 78o Klamath Subalpine
78p Duzel Rock 78p Duzel Rock
78q Outer North Coast Ranges 78q Outer North Coast Ranges
78r High North Coast Ranges 78r High North Coast Ranges
79a Apachian Valleys and Low Hills 79a Apachian Valleys and Low Hills
79b Lower Madrean Woodlands 79b Lower Madrean Woodlands
79c Madrean Pine-Oak and Mixed Conifer Forests 79c Madrean Pine-Oak and Mixed Conifer Forests
79d Willcox Playa 79d Willcox Playa
79e Madrean Basin Grasslands 79e Madrean Basin Grasslands
80a Dissected High Lava Plateau 80a Dissected High Lava Plateau
80b Semiarid Hills and Low Mountains 80b Semiarid Hills and Low Mountains
80c High Elevation Forests and Shrublands 80c High Elevation Forests and Shrublands
80d Pluvial Lake Basins 80d Pluvial Lake Basins
80e High Desert Wetlands 80e High Desert Wetlands
80f Owyhee Uplands and Canyons 80f Owyhee Uplands and Canyons
80g High Lava Plains 80g High Lava Plains
80h Saltbush-Dominated Valleys 80h Saltbush-Dominated Valleys
80i Sagebrush Steppe Valleys 80i Sagebrush Steppe Valleys
80j Semiarid Uplands 80j Semiarid Uplands
80k Partly Forested Mountains 80k Partly Forested Mountains
80l Salt Shrub Valleys 80l Salt Shrub Valleys
80m Barren Playas 80m Barren Playas
81a Western Sonoran Mountains 81a Western Sonoran Mountains
81b Western Sonoran Mountain Woodland and Shrubland 81b Western Sonoran Mountain Woodland and Shrubland
81c Western Sonoran Basins 81c Western Sonoran Basins
81d Sand Hills/Sand Dunes 81d Sand Hills/Sand Dunes
81e Upper Coachella Valley and Hills 81e Upper Coachella Valley and Hills
81f Imperial/Lower Coachella Valleys 81f Imperial/Lower Coachella Valleys
81g Lower Colorado/Lower Gila River Valleys 81g Lower Colorado/Lower Gila River Valleys
81h Sonoran Playas 81h Sonoran Playas
81i Central Sonoran/Colorado Desert Mountains 81i Central Sonoran/Colorado Desert Mountains
81j Central Sonoran/Colorado Desert Basins 81j Central Sonoran/Colorado Desert Basins
81k Arizona Upland/Eastern Sonoran Mountains 81k Arizona Upland/Eastern Sonoran Mountains
81l Arizona Upland/Eastern Sonoran Basins 81l Arizona Upland/Eastern Sonoran Basins
81m Sonoran Lava Fields 81m Sonoran Lava Fields
81n Gila/Salt Intermediate Basins 81n Gila/Salt Intermediate Basins
81o Middle Gila/Salt River Floodplains 81o Middle Gila/Salt River Floodplains
82a Aroostook Lowlands 82a Aroostook Lowlands
82b Aroostook Hills 82b Aroostook Hills
82c Eastern Maine-Southern New Brunswick Plains 82c Eastern Maine-Southern New Brunswick Plains
82d Central Foothills 82d Central Foothills
82e Central Maine Embayment 82e Central Maine Embayment
82f Midcoast 82f Midcoast
82g Downeast Coast 82g Downeast Coast
82h Penobscot Lowlands 82h Penobscot Lowlands
83a Erie/Ontario Lake Plain 83a Erie/Ontario Lake Plain
83b Champlain Lowlands 83b Champlain Lowlands
83c Ontario Lowlands 83c Ontario Lowlands
83d St. Lawrence Lowlands 83d St. Lawrence Lowlands
83e Upper St. Lawrence Valley 83e Upper St. Lawrence Valley
83f Mohawk Valley 83f Mohawk Valley
84a Cape Cod/Long Island 84a Cape Cod/Long Island
84b Pine Barrens 84b Pine Barrens
84c Barrier Islands/Coastal Marshes 84c Barrier Islands/Coastal Marshes
84d Inner Coastal Plain 84d Inner Coastal Plain
85a Santa Barbara Coastal Plain and Terraces 85a Santa Barbara Coastal Plain and Terraces
85b Oxnard Plain and Valleys 85b Oxnard Plain and Valleys
85c Venturan-Angeleno Coastal Hills 85c Venturan-Angeleno Coastal Hills
85d Los Angeles Plain 85d Los Angeles Plain
85e Diegan Coastal Terraces 85e Diegan Coastal Terraces
85f Diegan Coastal Hills and Valleys 85f Diegan Coastal Hills and Valleys
85g Diegan Western Granitic Foothills 85g Diegan Western Granitic Foothills
85h Morena/Boundary Mountain Chaparral 85h Morena/Boundary Mountain Chaparral
85i Northern Channel Islands 85i Northern Channel Islands
85j Southern Channel Islands 85j Southern Channel Islands
85k Inland Valleys 85k Inland Valleys
85l Inland Hills 85l Inland Hills
85m Santa Ana Mountains 85m Santa Ana Mountains
Level III Ecoregion Labels (Scale GT 4,000,000) (9)
Level III Ecoregion Labels (Scale LT 4,000,000) (10)
Level III Ecoregion Polygons (11)
1 Coast Range 1 Coast Range
2 Puget Lowland 2 Puget Lowland
3 Willamette Valley 3 Willamette Valley
4 Cascades 4 Cascades
5 Sierra Nevada 5 Sierra Nevada
6 Central California Foothills and Coastal Mountains 6 Central California Foothills and Coastal Mountains
7 Central California Valley 7 Central California Valley
8 Southern California Mountains 8 Southern California Mountains
9 Eastern Cascades Slopes and Foothills 9 Eastern Cascades Slopes and Foothills
10 Columbia Plateau 10 Columbia Plateau
11 Blue Mountains 11 Blue Mountains
12 Snake River Plain 12 Snake River Plain
13 Central Basin and Range 13 Central Basin and Range
14 Mojave Basin and Range 14 Mojave Basin and Range
15 Northern Rockies 15 Northern Rockies
16 Idaho Batholith 16 Idaho Batholith
17 Middle Rockies 17 Middle Rockies
18 Wyoming Basin 18 Wyoming Basin
19 Wasatch and Uinta Mountains 19 Wasatch and Uinta Mountains
20 Colorado Plateaus 20 Colorado Plateaus
21 Southern Rockies 21 Southern Rockies
22 Arizona/New Mexico Plateau 22 Arizona/New Mexico Plateau
23 Arizona/New Mexico Mountains 23 Arizona/New Mexico Mountains
24 Chihuahuan Deserts 24 Chihuahuan Deserts
25 High Plains 25 High Plains
26 Southwestern Tablelands 26 Southwestern Tablelands
27 Central Great Plains 27 Central Great Plains
28 Flint Hills 28 Flint Hills
29 Cross Timbers 29 Cross Timbers
30 Edwards Plateau 30 Edwards Plateau
31 Southern Texas Plains 31 Southern Texas Plains
32 Texas Blackland Prairies 32 Texas Blackland Prairies
33 East Central Texas Plains 33 East Central Texas Plains
34 Western Gulf Coastal Plain 34 Western Gulf Coastal Plain
35 South Central Plains 35 South Central Plains
36 Ouachita Mountains 36 Ouachita Mountains
37 Arkansas Valley 37 Arkansas Valley
38 Boston Mountains 38 Boston Mountains
39 Ozark Highlands 39 Ozark Highlands
40 Central Irregular Plains 40 Central Irregular Plains
41 Canadian Rockies 41 Canadian Rockies
42 Northwestern Glaciated Plains 42 Northwestern Glaciated Plains
43 Northwestern Great Plains 43 Northwestern Great Plains
44 Nebraska Sand Hills 44 Nebraska Sand Hills
45 Piedmont 45 Piedmont
46 Northern Glaciated Plains 46 Northern Glaciated Plains
47 Western Corn Belt Plains 47 Western Corn Belt Plains
48 Lake Agassiz Plain 48 Lake Agassiz Plain
49 Northern Minnesota Wetlands 49 Northern Minnesota Wetlands
50 Northern Lakes and Forests 50 Northern Lakes and Forests
51 North Central Hardwood Forests 51 North Central Hardwood Forests
52 Driftless Area 52 Driftless Area
53 Southeastern Wisconsin Till Plains 53 Southeastern Wisconsin Till Plains
54 Central Corn Belt Plains 54 Central Corn Belt Plains
55 Eastern Corn Belt Plains 55 Eastern Corn Belt Plains
56 Southern Michigan/Northern Indiana Drift Plains 56 Southern Michigan/Northern Indiana Drift Plains
57 Huron/Erie Lake Plains 57 Huron/Erie Lake Plains
58 Northeastern Highlands 58 Northeastern Highlands
59 Northeastern Coastal Zone 59 Northeastern Coastal Zone
60 Northern Allegheny Plateau 60 Northern Allegheny Plateau
61 Erie Drift Plain 61 Erie Drift Plain
62 North Central Appalachians 62 North Central Appalachians
63 Middle Atlantic Coastal Plain 63 Middle Atlantic Coastal Plain
64 Northern Piedmont 64 Northern Piedmont
65 Southeastern Plains 65 Southeastern Plains
66 Blue Ridge 66 Blue Ridge
67 Ridge and Valley 67 Ridge and Valley
68 Southwestern Appalachians 68 Southwestern Appalachians
69 Central Appalachians 69 Central Appalachians
70 Western Allegheny Plateau 70 Western Allegheny Plateau
71 Interior Plateau 71 Interior Plateau
72 Interior River Valleys and Hills 72 Interior River Valleys and Hills
73 Mississippi Alluvial Plain 73 Mississippi Alluvial Plain
74 Mississippi Valley Loess Plains 74 Mississippi Valley Loess Plains
75 Southern Coastal Plain 75 Southern Coastal Plain
76 Southern Florida Coastal Plain 76 Southern Florida Coastal Plain
77 North Cascades 77 North Cascades
78 Klamath Mountains/California High North Coast Range 78 Klamath Mountains/California High North Coast Range
79 Madrean Archipelago 79 Madrean Archipelago
80 Northern Basin and Range 80 Northern Basin and Range
81 Sonoran Basin and Range 81 Sonoran Basin and Range
82 Acadian Plains and Hills 82 Acadian Plains and Hills
83 Eastern Great Lakes Lowlands 83 Eastern Great Lakes Lowlands
84 Atlantic Coastal Pine Barrens 84 Atlantic Coastal Pine Barrens
85 Southern California/Northern Baja Coast 85 Southern California/Northern Baja Coast
Level IV Ecoregion Status (December 2011) (12)
Complete Complete
Draft Draft