| River | Length in Poland | % Correct |
|---|---|---|
| Odra | 742 | 97%
|
| Wisła | 1047 | 97%
|
| Bug | 587 | 82%
|
| Warta | 808 | 81%
|
| San | 457 | 66%
|
| Narew | 448 | 63%
|
| Pilica | 319 | 53%
|
| Noteć | 391 | 50%
|
| Dunajec | 247 | 48%
|
| Wieprz | 303 | 48%
|
| Nysa Łużycka | 198 | 47%
|
| Bóbr | 270 | 38%
|
| Brda | 238 | 38%
|
| Wisłok | 205 | 37%
|
| Drwęca | 207 | 25%
|
| Wkra | 249 | 25%
|
| Wda | 198 | 24%
|
| Prosna | 217 | 22%
|
| Łyna | 190 | 19%
|
| Drawa | 186 | 13%
|