Plains Like Rio Grande Plain

Mississippi Alluvial Plain

Plain

7.57 Good

Coastal Prairie (Texas)

Plain

7.40 Good

South Texas Plains

Plain

7.10 Good

Rolling Plains (Texas)

Plain

6.80 Fair

Gulf Coastal Plain

Plain

6.58 Fair

Sonoran Desert

Desert

8.85 Great

Flint Hills

Plain

8.70 Great

High Plains

Plain

8.15 Great

Salinas Valley

Plain

8.05 Great

Imperial Valley

Plain

7.55 Good

Lake Erie Plain

Plain

7.00 Good

Corpus Christi Bay

Bay

6.95 Fair

High Plains (USA)

Plain

6.83 Fair

Matagorda Bay

Bay

6.80 Fair

Galveston Bay

Bay

6.75 Fair

Drift Plains (North Dakota)

Plain

6.75 Fair

Atlantic Coastal Plain

Plain

6.42 Fair

Piedmont (Eastern USA)

Plain

5.98 Mediocre

Edwards Plateau Savanna

Savanna

5.81 Mediocre

Florida Dry Prairie

Savanna

5.72 Mediocre

Colorado Plateau

Desert

9.55 Brilliant

Florida Everglades

Marsh

9.45 Excellent

Columbia

River

9.32 Excellent

Lake Tahoe

Lake

9.20 Excellent