| Answer | Crossword Clue |
|---|---|
| DRAVA | 450-mile tributary of the Danube. |
| PRUT | 500-mile Danube tributary, crossed by Reds. |
| DRAVE | River flowing 450 miles into the Danube. |
| COLORADO | 1,450 mile river to the Gulf of Mexico |
| SAVA | Tributary of the Danube. |
| OLT | Tributary of the Danube. |
| ILLER | Tributary of the Danube. |
| ENNS | Tributary of the Danube. |
| PRUT | Tributary of the Danube. |
| RABA | Tributary of the Danube. |
| DRAVA | Tributary of the Danube. |
| SIRET | Tributary of the Danube. |
| ISAR | Tributary of the Danube. |
| INN | Tributary of the Danube. |
| PRUTH | Tributary of the Danube. |
| DRAVE | Tributary of the Danube. |
| SIRET | Rumanian tributary of the Danube. |
| ARGES | Rumanian tributary of the Danube. |
| ENNS | River in Austria, tributary of the Danube. |
