Swamps Like Slave River Delta

Old Crow Flats

Marsh

8.44 Great

Saskatchewan River Delta

Swamp

8.36 Great

Columbia

River

9.32 Excellent

Saint Lawrence

River

9.03 Excellent

Mackenzie

River

9.03 Excellent

Peace-Athabasca Delta

Swamp

9.02 Excellent

Great Slave Lake

Lake

9.02 Excellent

Fraser

River

8.92 Great

Yukon Delta National Wildlife Refuge

Marsh

8.86 Great

Great Bear Lake

Lake

8.85 Great

Georgian Bay

Bay

8.78 Great

Mackenzie River Delta

Marsh

8.67 Great

Hudson Bay

Bay

8.38 Great

Ungava Bay

Bay

7.92 Good

Seney National Wildlife Refuge

Swamp

7.84 Good

Koksoak River Delta

Delta

7.81 Good

Nelson River Delta

Delta

7.72 Good

James Bay

Bay

7.62 Good

Thunder Bay

Bay

7.55 Good

Nelson

River

7.51 Good

Mackenzie River Lowlands

Plain

4.99 Poor

Florida Everglades

Marsh

9.45 Excellent

Crater Lake

Lake

9.20 Excellent

Lake Tahoe

Lake

9.20 Excellent