| Longueur | Cours d'eau | % Correct |
|---|---|---|
| 775 km | Seine | 99%
|
| 514 km | Marne | 97%
|
| 341 km | Oise | 96%
|
| 292 km | Yonne | 89%
|
| 229 km | Eure | 87%
|
| 356 km | Aisne | 81%
|
| 249 km | Aube | 77%
|
| 101 km | Essonne | 66%
|
| 143 km | Loing | 51%
|
| 60 km | Somme-Soude | 41%
|
| 54 km | Orge | 39%
|
| 202 km | Armançon | 33%
|
| 86 km | Ourcq | 33%
|
| 113 km | Epte | 32%
|
| 118 km | Grand Morin | 32%
|
| 145 km | Risle | 31%
|
| 132 km | Iton | 30%
|
| 188 km | Serein | 30%
|
| 86 km | Petit Morin | 28%
|
| 98 km | Yerres | 28%
|
| 113 km | Cure | 27%
|
| 80 km | Avre | 26%
|
| 139 km | Vesle | 25%
|
| 57 km | Andelle | 23%
|
| 94 km | Thérain | 23%
|
| 126 km | Aire | 22%
|
| 116 km | Ornain | 22%
|
| 100 km | Ource | 22%
|
| 115 km | Saulx | 22%
|
| 67 km | Cousin | 21%
|
| 53 km | Juine | 20%
|
| 82 km | Suippe | 20%
|
| 59 km | Vanne | 20%
|
| 50 km | Barse | 19%
|
| 96 km | Serre | 19%
|
| 72 km | Brenne | 18%
|
| 63 km | Charentonne | 17%
|
| 56 km | Ton | 17%
|
| 61 km | Aubetin | 16%
|
| 69 km | Chée | 16%
|
| 51 km | Lunain | 16%
|
| 59 km | Ailette | 15%
|
| 84 km | Ouanne | 14%
|
| 73 km | Rognon | 13%
|
| 68 km | Aujon | 12%
|
| 86 km | Blaise | 12%
|
| 56 km | Voire | 12%
|