| Cours d'eau | % Correct |
|---|---|
| Meuse | 98%
|
| Escaut | 84%
|
| Sambre | 84%
|
| Semois | 76%
|
| Our | 69%
|
| Ourthe | 65%
|
| Lesse | 63%
|
| Lys | 47%
|
| Senne | 47%
|
| Dyle | 41%
|
| Amblève | 39%
|
| Dendre | 35%
|
| Viroin | 29%
|
| Gette | 22%
|
| Eau Noire | 21%
|
| Geer | 21%
|
| Sûre | 21%
|
| Eau Blanche | 20%
|
| Oise | 20%
|
| Grande Gette | 10%
|
| Warche | 10%
|
| Wiltz | 6%
|