DONAU
| 5 |
BOSNA
| 5 |
MORAWA
| 6 |
THEISS
| 6 |
VARDAR
| 6 |
WARDAR
| 6 |
NARENTA
| 7 |
NERETVA
| 7 |
NERETVA
| 7 |
4 | |
KOENIGSAU
| 9 |
DRAU
| 4 |
NIL
| 3 |
NETO
| 4 |
CRATI
| 5 |
3 | |
BUSENTO
| 7 |
7 | |
BUSENTO
| 7 |
5 | |
3 | |
YUBA
| 4 |
FEATHER
| 7 |
3 | |
ALBEE
| 5 |
ALBION
| 6 |
KLAMATH
| 7 |
MOHAVE
| 6 |
MOJAVE
| 6 |
SACRAMENTO
| 10 |
INSTER
| 6 |
PREGEL
| 6 |
HUGLI
| 5 |
MEKONG
| 6 |
3 | |
TONLE
| 5 |
TONLESAP
| 8 |
TONLESAP
| 8 |
DEO
| 3 |
DOM
| 3 |
LOM
| 3 |
NIA
| 3 |
LUE
| 3 |
DJA
| 3 |
OFA
| 3 |
NTEM
| 4 |
MBAM
| 4 |
FARO
| 4 |
MEIE
| 4 |
NOUN
| 4 |
KAMPO
| 5 |
MUNGO
| 5 |
WOURI
| 5 |
BENUE
| 5 |
NYONG
| 5 |
NGOKO
| 5 |
CROSS
| 5 |
DONGA
| 5 |
KABIA
| 5 |
KADEI
| 5 |
MBERE
| 5 |
LOGOME
| 6 |
LOGONE
| 6 |
DJEREM
| 6 |
SCHARI
| 6 |
SANAGA
| 6 |
BÉNOUÉ
| 6 |
SANGHA
| 6 |
MAYOKÉBBI
| 9 |
CROSSRIVER
| 10 |
EBO
| 3 |
KIM
| 3 |
REI
| 3 |
5 | |
DJEREM
| 6 |
LOGONE
| 6 |
5 | |
SANAGA
| 6 |
SANGHA
| 6 |
SCHARI
| 6 |
5 | |
VOLTURNO
| 8 |
4 | |
YUKON
| 5 |
FRASER
| 6 |
MACKENZIE
| 9 |
SASKATCHEWAN
| 12 |
HAY
| 3 |
BOW
| 3 |
ELK
| 3 |
MILK
| 4 |
YAAK
| 4 |
NASS
| 4 |
SEAL
| 4 |
TAKU
| 4 |
UNUK
| 4 |
TOBA
| 4 |
TOAD
| 4 |
PEACE
| 5 |
DEASE
| 5 |