Semantic search
- Chiriqui Basin
- Choluteca Basin
- Chuy Basin
- Coastal Aquifer (Israel, Palestine)
- Coatan Achute Basin
- Coco (Segovia) Basin
- Colorado Basin
- Colorado River
- Colorado-Corredores Basin
- Columbia Basin
- Columbia River Basin
- Comau Basin
- Congo Basin
- Conventillos Basin
- Corubal Basin
- Coruh Basin
- Courantyne (Corantijn) Basin
- Cross Basin
- Cuareim River
- Cullen Basin
- Cuvelai River-Etosha Pan Basin
- Danjiangkou Reservoir
- Danube Basin
- Danube River
- Daoura Basin
- Dasht Basin
- Daugava Basin
- Dead Sea
- Devil's Lake Basin
- Dnieper Basin
- Dniester Basin
- Don Basin
- Douro (Duero) Basin
- Dra Basin
- Drava River
- Drin Basin
- Ebro Basin
- Ebro River
- El Naranjo Basin
- Elancik Basin
- Elbe Basin
- Erne Basin
- Essequibo Basin
- Euphrates River
- Fane Basin
- Fenney Basin
- Firth Basin
- Flint River
- Flurry Basin
- Fly Basin