| Rating | Solver | Clue |
|---|---|---|
| DELTA | River mouth area | |
| DELTAS | River-mouth regions | |
| BOCA | River mouth | |
| ESTUARY | River mouth | |
| DOWNSTREAM | Towards mouth of river | |
| RAPIDS | White water river area | |
| OUTFALL | Mouth of a river | |
| LADE | The mouth of a river. | |
| OSTIARY | The mouth of a river; an estuary. | |