BEGA
| 4 |
DRAU
| 4 |
EGER
| 4 |
ENNS
| 4 |
SEGRE
| 5 |
SAONE
| 5 |
RONCO
| 5 |
REUSS
| 5 |
PRUTH
| 5 |
PIAVE
| 5 |
ONEGA
| 5 |
NAREW
| 5 |
MUERZ
| 5 |
MOSEL
| 5 |
MEUSE
| 5 |
MESTA
| 5 |
SEINE
| 5 |
SEVRE
| 5 |
SAVIO
| 5 |
ZUJAR
| 5 |
YSSEL
| 5 |
YONNE
| 5 |
VARDE
| 5 |
THAYA
| 5 |
TAMAR
| 5 |
TAGIL
| 5 |
SOMME
| 5 |
MARNE
| 5 |
DOUBS
| 5 |
DONEZ
| 5 |
DIVES
| 5 |
DISNA
| 5 |
CLYDE
| 5 |
BOSNA
| 5 |
BEGNA
| 5 |
ANCRE
| 5 |
AISNE
| 5 |
ADOUR
| 5 |
ADIGE
| 5 |
DRINA
| 5 |
DROME
| 5 |
DWINA
| 5 |
MARCH
| 5 |
LOIRE
| 5 |
KUBAN
| 5 |
KREMS
| 5 |
KERKA
| 5 |
JUCAR
| 5 |
JALON
| 5 |
ISKER
| 5 |
ISERE
| 5 |
INDRE
| 5 |
ETSCH
| 5 |
TAMINA
| 6 |
SEVERN
| 6 |
SEMOIS
| 6 |
SARTHE
| 6 |
SAMARA
| 6 |
RUBICO
| 6 |
PRIPET
| 6 |
PILICA
| 6 |
THEISS
| 6 |
TICINO
| 6 |
ZEZERE
| 6 |
WUOXEN
| 6 |
WJATKA
| 6 |
WIKIJA
| 6 |
VIENNE
| 6 |
VARDAR
| 6 |
TORMES
| 6 |
OURTHE
| 6 |
NJEMEN
| 6 |
DJESNA
| 6 |
CREUSE
| 6 |
BEROUN
| 6 |
BERAUN
| 6 |
ARIEGE
| 6 |
ARAGON
| 6 |
ALLIER
| 6 |
ALBULA
| 6 |
EISACK
| 6 |
HUSINE
| 6 |
NAROWA
| 6 |
MOSKWA
| 6 |
MORAWA
| 6 |
MEDUNA
| 6 |
NEUTRA
| 6 |
ISONZO
| 6 |
LEITHA
| 6 |
LIMMAT
| 6 |
NARENTA
| 7 |
PRIPJET
| 7 |
SALZACH
| 7 |
SCHELDE
| 7 |
SHANNON
| 7 |
PENEIOS
| 7 |
STUBACH
| 7 |
TREBBIA
| 7 |
VILAINE
| 7 |
WETLUGA
| 7 |