Ecological Regions: Level 1 Regions
North AmericaPhysical EnvironmentExtent of the Level I Ecological Regions of North America
EPAA map of North America shows various ecological regions, each marked with a distinct color to represent different Level 1 ecological regions.
Arctic Cordillera (Red): Found in the northernmost parts of Canada, specifically the Arctic Archipelago. Tundra (Blue): Covers large portions of northern Canada, including parts of Nunavut and the Northwest Territories, as well as coastal areas of Alaska. Taiga (Purple): Spans across central and northern Canada, covering parts of Quebec, Ontario, Manitoba, Saskatchewan, Alberta, and British Columbia. Hudson Plain (Orange): Located in the northeastern part of Canada, around the Hudson Bay area. Boreal Forests (Yellow): Encompasses large areas in Canada, south of the tundra and taiga regions, and extends into parts of Newfoundland and Labrador. Northwestern Forested Mountains (Green): Found along the western coast of Canada and the United States, covering parts of British Columbia and Alaska. Marine West Coast Forest (Brown): Occupies the coastal regions of the Pacific Northwest, including areas in British Columbia, Washington, Oregon, and northern California. Eastern Temperate Forests (Pink): Stretch from the Great Lakes region through the northeastern United States and into eastern Canada. Great Plains (Grey): Span the central United States from Canada to Texas, including parts of Alberta, Saskatchewan, Manitoba, and several central U.S. states. Deserts and Steppes (Dark Green): Found in the southwestern United States and northern Mexico, covering areas in Arizona, New Mexico, and parts of California and Nevada. Mediterranean California (Dark Pink): Specific to the coastal regions of central and southern California. Southern Semi-Arid Highlands (Gold): Located in central Mexico and parts of the southwestern United States. Temperate Sierras (Dark Brown): Found in Mexico, primarily in the Sierra Madre ranges. Tropical Dry Forests (Light Brown): Present in parts of southern Mexico and Central America. Tropical Wet Forests (Light Tan): Located in the southeastern part of Mexico and Central America, including the Yucatan Peninsula.
Arctic Cordillera | Tundra | Taiga | Hudson Plain | Boreal forests | Northwestern forested mountains | Marine west coast forest | Eastern temperate forests | Great Plains | Deserts and steppes | Mediterranean California | Southern semi-arid highlands | Temperate sierras | Tropical wet forests | Atlantic Ocean Seaboard | Baja California | California | Churchill | Columbia and Northwestern United States | Fraser | Great Basin | Gulf Coast | Gulf of Mexico, North Atlantic Coast | Hudson Bay Coast | Mackenzie | Mexico, Northwest Coast | Mississippi - Missouri | North America, Colorado | Northwest Territories | Pacific and Arctic Coast | Río Grande - Bravo | Saskatchewan - Nelson | St John | St Lawrence | United States, North Atlantic Coast | |
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Alaska | 25.1% | 6.23% | 14.3% | 3.61% | 98.0% | ||||||||||||||||||||||||||||||
Arizona | 66.3% | 12.9% | 19.7% | 4.47% | 95.5% | ||||||||||||||||||||||||||||||
Utah | 19.3% | 80.3% | 0.394% | 51.8% | 47.8% | ||||||||||||||||||||||||||||||
Yukon | 7.08% | 38.7% | 53.4% | 26.5% | 73.4% | ||||||||||||||||||||||||||||||
Northwest Territories | 3.04% | 63.7% | 54.6% | 44.0% | 0.207% | ||||||||||||||||||||||||||||||
District of Columbia | 100% | 100% | |||||||||||||||||||||||||||||||||
Florida | 84.3% | 14.5% | 98.4% | ||||||||||||||||||||||||||||||||
Idaho | 57.3% | 40.7% | 95.7% | 4.03% | 0.316% | ||||||||||||||||||||||||||||||
New Hampshire | 82.5% | 17.5% | 99.7% | 0.302% | |||||||||||||||||||||||||||||||
Rhode Island | 92.1% | 92.6% | |||||||||||||||||||||||||||||||||
Vermont | 86.9% | 13.1% | 42.4% | 53.3% | 4.27% | ||||||||||||||||||||||||||||||
Washington | 44.1% | 18.2% | 34.8% | 70.9% | 27.9% | ||||||||||||||||||||||||||||||
Wyoming | 6.11% | 27.1% | 46.4% | 5.11% | 1.48% | 72.4% | 21.0% | ||||||||||||||||||||||||||||
Nunavut | 1.96% | 1.52% | 3.41% | 0.205% | 96.5% | ||||||||||||||||||||||||||||||
Montana | 31.6% | 66.0% | 17.1% | 82.4% | 0.445% | ||||||||||||||||||||||||||||||
Maine | 44.1% | 52.2% | 75.6% | 23.3% | |||||||||||||||||||||||||||||||
North Dakota | 100% | 58.0% | 42.0% | ||||||||||||||||||||||||||||||||
Kentucky | 100% | 100% | |||||||||||||||||||||||||||||||||
Nova Scotia | 17.5% | 6.61% | 94.2% | ||||||||||||||||||||||||||||||||
Virginia | 99.4% | 25.9% | 17.7% | 55.4% | |||||||||||||||||||||||||||||||
Delaware | 98.4% | 97.0% | |||||||||||||||||||||||||||||||||
Prince Edward Island | 89.2% | 61.9% | |||||||||||||||||||||||||||||||||
Saskatchewan | 8.06% | 57.8% | 33.4% | 19.8% | 2.89% | 31.0% | 46.3% | ||||||||||||||||||||||||||||
Mississippi | 99.9% | 50.1% | 49.8% | ||||||||||||||||||||||||||||||||
West Virginia | 100% | 84.7% | 15.3% | ||||||||||||||||||||||||||||||||
Nebraska | 100% | 100% | |||||||||||||||||||||||||||||||||
Texas | 17.3% | 4.05% | 13.1% | 64.1% | 17.3% | 18.4% | |||||||||||||||||||||||||||||
Missouri | 60.6% | 39.4% | 100% | ||||||||||||||||||||||||||||||||
Louisiana | 86.4% | 12.6% | 5.73% | 1.66% | 91.0% | ||||||||||||||||||||||||||||||
North Carolina | 99.2% | 85.7% | 12.8% | ||||||||||||||||||||||||||||||||
Oregon | 53.3% | 14.9% | 7.11% | 6.40% | 91.0% | 2.50% | |||||||||||||||||||||||||||||
New Brunswick | 3.19% | 95.8% | 58.6% | 40.2% | |||||||||||||||||||||||||||||||
Alabama | 99.9% | 86.2% | 13.6% | ||||||||||||||||||||||||||||||||
New Mexico | 8.59% | 32.9% | 7.36% | 1.32% | 3.54% | 4.48% | 7.00% | 14.8% | 19.5% | 54.2% | |||||||||||||||||||||||||
Kansas | 99.9% | 100% | |||||||||||||||||||||||||||||||||
Wisconsin | 31.7% | 66.5% | 1.10% | 69.3% | 30.7% | ||||||||||||||||||||||||||||||
British Columbia | 7.72% | 4.25% | 60.9% | 6.59% | 4.95% | 9.53% | 22.5% | 31.2% | 35.7% | ||||||||||||||||||||||||||
Newfoundland and Labrador | 5.23% | 56.9% | 22.4% | 75.3% | 22.1% | 0.795% | |||||||||||||||||||||||||||||
New Jersey | 11.2% | 86.6% | 97.8% | ||||||||||||||||||||||||||||||||
South Carolina | 99.7% | 99.9% | |||||||||||||||||||||||||||||||||
Michigan | 25.2% | 1.08% | 100% | ||||||||||||||||||||||||||||||||
Alberta | 17.4% | 54.4% | 6.61% | 21.1% | 66.5% | 0.906% | 2.66% | 29.9% | |||||||||||||||||||||||||||
Connecticut | 15.9% | 84.0% | 99.0% | 1.05% | |||||||||||||||||||||||||||||||
Pennsylvania | 3.06% | 79.4% | 34.4% | 1.43% | 64.1% | ||||||||||||||||||||||||||||||
Colorado | 38.2% | 42.1% | 2.98% | 56.1% | 36.7% | 7.14% | |||||||||||||||||||||||||||||
Nevada | 99.6% | 3.75% | 5.41% | 80.0% | 10.9% | ||||||||||||||||||||||||||||||
Massachusetts | 32.4% | 63.3% | 91.1% | 2.45% | |||||||||||||||||||||||||||||||
Georgia | 99.9% | 97.1% | 2.66% | ||||||||||||||||||||||||||||||||
New York | 19.7% | 1.05% | 0.410% | 4.00% | 49.4% | 45.5% | |||||||||||||||||||||||||||||
Maryland | 97.9% | 4.25% | 93.5% | ||||||||||||||||||||||||||||||||
Québec | 1.01% | 37.0% | 2.25% | 3.73% | 1.51% | 7.79% | 0.358% | 64.3% | 0.386% | 26.7% | |||||||||||||||||||||||||
Manitoba | 22.1% | 11.3% | 55.4% | 10.0% | 17.7% | 34.5% | 47.7% | ||||||||||||||||||||||||||||
Oklahoma | 21.6% | 78.4% | 100% | ||||||||||||||||||||||||||||||||
Tennessee | 100% | 99.9% | |||||||||||||||||||||||||||||||||
Ontario | 28.1% | 64.1% | 7.08% | 61.9% | 11.8% | 26.2% | |||||||||||||||||||||||||||||
California | 26.9% | 2.89% | 29.8% | 39.7% | 0.273% | 94.9% | 0.130% | 1.98% | 2.37% | ||||||||||||||||||||||||||
Arkansas | 100% | 100% | |||||||||||||||||||||||||||||||||
South Dakota | 3.94% | 96.1% | 99.2% | 0.773% | |||||||||||||||||||||||||||||||
Ohio | 99.9% | 71.3% | 28.7% | ||||||||||||||||||||||||||||||||
Indiana | 100% | 89.5% | 10.5% | ||||||||||||||||||||||||||||||||
Minnesota | 40.6% | 24.1% | 35.2% | 57.4% | 35.3% | 7.33% | |||||||||||||||||||||||||||||
Iowa | 6.36% | 93.6% | 100% | ||||||||||||||||||||||||||||||||
Illinois | 99.9% | 98.7% | 1.31% |