PENEJOS
| 7 |
PERSANTE
| 8 |
PESCARA
| 7 |
PIELACH
| 7 |
PINEGA
| 6 |
PISSEK
| 6 |
PISUERGA
| 8 |
PITEAELF
| 8 |
PLATANI
| 7 |
PLATINI
| 7 |
PLEISSE
| 7 |
POPRAD
| 6 |
PREGEL
| 6 |
PRIPET
| 6 |
PRIPJAT
| 7 |
PRIPJET
| 7 |
PROSNA
| 6 |
PSJOL
| 5 |
PULSNITZ
| 8 |
QUEICH
| 6 |
RABA
| 4 |
RABNITZ
| 7 |
RADAUNE
| 7 |
RADOMKA
| 7 |
RANDOW
| 6 |
RECKNITZ
| 8 |
REDNITZ
| 7 |
RIVA
| 4 |
RODACH
| 6 |
ROTERMAIN
| 9 |
ROTHER
| 6 |
SADO
| 4 |
SALAMVRIA
| 9 |
SALOR
| 5 |
SAMBRE
| 6 |
SANGRO
| 6 |
SANN
| 4 |
SARCA
| 5 |
SAZAWA
| 6 |
SCARPE
| 6 |
SCHARA
| 6 |
SCHEKSNA
| 8 |
SCHELDE
| 7 |
SCHMUTTER
| 9 |
SCHWALM
| 7 |
SCHWARTZWASSER
| 14 |
SCHWARZA
| 8 |
SCHWARZBACH
| 11 |
SCHWARZERDRIN
| 13 |
SCHWARZWASSER
| 13 |
SEGURA
| 6 |
SEINE
| 5 |
SEMENI
| 6 |
SENNE
| 5 |
SERETH
| 6 |
SEVERN
| 6 |
SHKUMBIN
| 8 |
3 | |
SINETO
| 6 |
SLANEY
| 6 |
SLUTSCH
| 7 |
SOMESCHUL
| 9 |
SOSH
| 4 |
SPOEL
| 5 |
SPRECA
| 6 |
SPROTTE
| 7 |
STANLEY
| 7 |
STOBER
| 6 |
STOCHOD
| 7 |
STOLPE
| 6 |
STRUMA
| 6 |
STRYMON
| 7 |
SUCHONA
| 7 |
SUCZAWA
| 7 |
SUEDERAU
| 8 |
SULINA
| 6 |
SURA
| 4 |
SZAMOS
| 6 |
SZOCKACH
| 8 |
TAGLIAMENTO
| 11 |
TANA
| 4 |
TANAELF
| 7 |
TANARO
| 6 |
TANEW
| 5 |
TARMINA
| 7 |
TARNA
| 5 |
TAUBER
| 6 |
TEMES
| 5 |
3 | |
THEISS
| 6 |
THEMSE
| 6 |
THYLE
| 5 |
TIMOK
| 5 |
TIRSO
| 5 |
TOLLENSE
| 8 |
TOPLA
| 5 |
TORMES
| 6 |
TORNEAELF
| 9 |
TRAISEN
| 7 |
TREBBIA
| 7 |