Semantic search
- Motaqua Basin
- Murgab Basin
- Naatamo Basin
- Nahr El Kebir Basin
- Narva Basin
- Negro Basin
- Nelson-Saskatchewan Basin
- Neman Basin
- Neretva Basin
- Nestos Basin
- Nile Basin
- Nyanga Basin
- Ob Basin
- Oder Basin
- Ogooue Basin
- Okavango Basin
- Olanga Basin
- Orange Basin
- Orinoco Basin
- Oued Bon Naima Basin
- Oueme Basin
- Oulu Basin
- Oyupock (Oiapoque) Basin
- Pakchan Basin
- Palena Basin
- Parnu Basin
- Pascua Basin
- Pasvik Basin
- Patia Basin
- Paz Basin
- Pedernales Basin
- Po Basin
- Prohladnaja Basin
- Pu Lun T'o Basin
- Puelo Basin
- Pungwe Basin
- Red (Song Hong) Basin
- Rezvaya Basin
- Rhine Basin
- Rhone Basin
- Rio Grande Basin (North America)
- Rio Grande Basin (South America)
- Roia Basin
- Ruvuma Basin
- Sabi Basin
- Saigon Basin
- Salaca Basin
- Salween Basin
- Salween River
- Samur Basin
- San Juan Basin
- San Martin Basin
- Sanaga Basin
- Sarata Basin
- Sarstun Basin
- Sassandra Basin
- Schelde Basin
- Seine Basin
- Sembakung Basin
- Senegal Basin
- Senegal River
- Sepik Basin
- Serrano Basin
- Shu-Chu Basin
- Sixaola Basin
- Skagit Basin
- Song Vam Co Dong Basin
- St. Croix Basin
- St. John Basin (Africa)
- St. John Basin (North America)
- St. Lawrence Basin
- St. Paul Basin
- Stikine Basin
- Struma Basin
- Suchiate Basin
- Sujfun Basin
- Sulak Basin
- Syr Darya (River)
- Tafna Basin
- Tagus (Tejo) Basin
- Taku Basin
- Talas Basin
- Tami Basin
- Tana Basin
- Tano Basin
- Tarim Basin
- Temash Basin
- Terek Basin
- Thukela Basin
- Tigris River
- Tigris-Euphrates (Shatt al Arab) Basin
- Tijuana Basin
- Tjeroaka-Wanggoe Basin
- Torne-Tornealven Basin
- Tuloma Basin
- Tumbes Basin
- Tumen Basin
- Umatilla River
- Umba Basin
- Umbeluzi Basin