Great Lakes Basin and Connecting Channel Watershed Boundary v2.0 (0)
Great Lakes Watershed Boundary v2.0 (1)
| Niagara River; St. Clair River - Lake St. Clair - Detroit River; St. Marys River |
| Lake Erie |
| Lake Huron |
| Lake Ontario |
| Lake Superior |
| Upper St. Lawrence |
Great Lakes Watershed Boundary v2.0 - Simplified 100 M (2)
| Niagara River; St. Clair River - Lake St. Clair - Detroit River; St. Marys River |
| Lake Erie |
| Lake Huron |
| Lake Ontario |
| Lake Superior |
| Upper St. Lawrence |
Great Lakes Watershed Boundary v2.0 - Simplified 1 Km (3)
| Niagara River; St. Clair River - Lake St. Clair - Detroit River; St. Mary's River |
| Lake Erie |
| Lake Huron |
| Lake Ontario |
| Lake Superior |
| Upper St. Lawrence |
|
