| Answer | Crossword Clue |
|---|---|
| BASIN | Tract drained by a river. |
| BASIN | Tract of land drained by a river. |
| BASIN | Area drained by a river. |
| BASIN | Land drained by a river. |
| ERIE | Lake drained by Niagara River. |
| CHACO | Region drained by the Paraguay River |
| TAHOE | Lake drained by the Truckee River |
| ANGARITA | President of country drained by Orinoco River. |
