| Długość | Rzeka | % Poprawnych |
|---|---|---|
| 742 km | Odra | 95%
|
| 238 km | Brda | 65%
|
| 249 km | Wkra | 62%
|
| 270 km | Bóbr | 54%
|
| 151 km | Nida | 41%
|
| 190 km | Łyna | 40%
|
| 164 km | Obra | 36%
|
| 132 km | Raba | 34%
|
| 168 km | Rega | 31%
|
| 145 km | Gwda | 28%
|
| 157 km | Lega | 2%
|