| Clue | Source | Date |
|---|---|---|
| *Triangular landform | LA Times Daily | 09 Oct 2024 |
| Mouth location | Wall Street Journal | 20 Sep 2017 |
| Fertile triangle | USA Today | 21 Aug 2016 |
| Fertile triangle | ||
| *Fertile area where a stream empties into an ocean | ||
| Ocean feeder, often | ||
| Mouth formation | ||
| Mouth formation | ||
| Silt location | ||
| Fertile triangle |