Semantic search
- Jenisej (Yenisey) Basin
- Joint Commission for the Protection of Italian- Swiss Waters against Pollution (CIPAIS)
- Joint Commission on the Garonne
- Joint Commission on the Tisza Basin
- Joint Drava Commission
- Joint Water Commission (JWC) (South Africa and Swaziland)
- Jordan
- Jordan Basin
- Jordan River
- Juba-Shibeli Basin
- Jurado Basin
- Kagera Basin
- Kaladan Basin
- Karnaphuli Basin
- Kazakhstan
- Kemi Basin
- Kenya
- Kingdom of Cambodia
- Klaralven Basin
- Kogilnik Basin
- Komati Basin Water Authority (KOBWA)
- Komoe Basin
- Korea, Democratic People's Republic of (North)
- Kosi Barrage and Embankment System (The Kosi Project)
- Kosi River
- Kowl E Namaksar Basin
- Krka Basin
- Kunene Basin
- Kura-Araks River
- Kyrgyzstan
- 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