River Ouse River Thames River Severn River Trent
River Dnieper Vardar River River Po Dordogne River
River Vistula River Oder River Sanna River Wilga
Clyde Spey Forth Tay
River Forth River Clyde River Spey River Tay
River Towy River Taff River Usk River Dee
River Rhone Dordogne River River Rhine Loire River
