| Answer | Crossword Clue |
|---|---|
| sources | the place where a river begins |
| sourceful | the place where a river begins |
| trailheads | The place where a trail begins |
| IDAHO | Where the Spokane River begins |
| OHIO | Where the Wabash River begins |
| PITTSBURGHPENNA | Where the Ohio River begins |
| MALI | Where the Senegal River begins |
| MONTANA | Where the Missouri River begins |
| mouths | The place where a river enters the sea |
| outfalls | The place where a river, drain, or sewer empties into the sea, a river, or a lake |
