Semantic search
- Kogilnik Basin
- Komoe Basin
- Kosi River
- Kowl E Namaksar Basin
- Krka Basin
- Kunene Basin
- Kura-Araks River
- La Plata Basin
- La Plata River
- Lagoon Mirim Basin
- Lake Chad Basin
- Lake Fagnano Basin
- Lake Geneva
- Lake Lugano
- Lake Maggiore
- Lake Mead
- Lake Nacimiento
- Lake Natron Basin
- Lake Peipsi
- Lake Powell
- Lake Prespa Basin
- Lake Tanganyika
- Lake Titicaca
- Lake Titicaca-Poopo System Basin
- Lake Titicaca-Poopo System Basin Basin
- Lake Titicaca-PoopĆ³ Basin System
- Lake Turkana Basin
- Lake Ubsa-Nur Basin
- Lake Victoria Basin
- Lauca-Cancoso Basin
- Lava-Pregel Basin
- Lempa Basin
- Lielupe Basin
- Lima Basin
- Limpopo Basin
- Little Scarcies Basin
- Loes Basin
- Loffa Basin
- Lotagipi Swamp Basin
- Ma Basin
- Mahakali River
- Mana-Morro Basin
- Maputo Basin
- Maritsa Basin
- Maroni Basin
- Massacre Basin Aquifer
- Mataje Basin
- Mbe Basin
- Medjerda Basin
- Mekong River
- Meuse Basin
- Mino Basin
- Mira Basin
- Mirim Lagoon Basin
- Mississippi Basin
- Mius Basin
- Moa Basin
- Moho Basin
- Mono Basin
- Moselle Basin
- Motaqua Basin
- Murgab Basin
- Murray-Darling Basin
- Naatamo Basin
- Nahr El Kebir Basin
- Narmada River
- Narmada River Basin
- Narva Basin
- Negro Basin
- Nelson-Saskatchewan Basin
- Neman Basin
- Neretva Basin
- Nestos Basin
- Niger Basin
- Nile
- Nile Basin
- Nile River
- Nyanga Basin
- Ob Basin
- Oder (Odra) Basin
- Oder Basin
- Ogallala Aquifer
- 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
- Pandaruan Basin
- Pangani Basin
- Parana
- Parnu Basin
- Pascua Basin
- Pasvik Basin
- Patia Basin