| Długość | Rzeka | % Poprawnych |
|---|---|---|
| 1047 km | Wisła | 100%
|
| 854 km | Odra | 99%
|
| 808 km | Warta | 90%
|
| 772 km | Bug | 86%
|
| 458 km | San | 65%
|
| 484 km | Narew | 63%
|
| 391 km | Noteć | 57%
|
| 247 km | Dunajec | 54%
|
| 303 km | Wieprz | 54%
|
| 319 km | Pilica | 46%
|
| 252 km | Nysa Łużycka | 40%
|
| 272 km | Bóbr | 37%
|
| 238 km | Brda | 35%
|
| 249 km | Wkra | 22%
|
| 264 km | Łyna | 18%
|