| Answer | Crossword Clue |
|---|---|
| ERIE | Lake that's the source of the Niagara River |
| ERIE | Lake ..., source of the Niagara River |
| ITASCA | Lake that's the source of the Mississippi |
| ERIE | Lake that's the outlet for the Detroit River |
| ITASCA | Lake that's a source of the Mississippi |
| ITASCA | Minnesota lake that's a source of the Mississippi |
