Semantic search
- Bosnia and Herzegovina
- Bosnia-Herzegovina
- Botswana
- Boundary Convention between the United States of America and Mexico
- Brazil
- Brunei
- Bulgaria
- Burkina Faso
- Burund
- Burundi
- Buzi Basin
- Ca (Song-Koi) Basin
- California (U.S.)
- California Groundwater Sustainability Agency
- Cambodia (Kampuchea)
- Cameroon
- Canada
- Canadian Columbia River Inter-Tribal Fisheries Commission
- Candelaria Basin
- Castletown Basin
- Catalonia
- Catatumbo Basin
- Cavally Basin
- Central African Republic
- Central Commission for the Navigation of the Rhine
- Cestos Basin
- Chad
- Chamelecon Basin
- Changuinola Basin
- Chesapeake Bay
- Chico (Carmen Silva) Basin
- Chico (Carmen Silva)Basin
- Chile
- Chilkat Basin
- Chiloango Basin
- China
- Chira Basin
- Chiriqui Basin
- Choluteca Basin
- Chuy Basin
- Coastal Aquifer (Israel, Palestine)
- Coatan Achute Basin
- Coco (Segovia) Basin
- Code of Conduct (COC)
- Colombia
- Colorado (U.S.)
- Colorado Basin
- Colorado River
- Colorado River Compact
- Colorado River Storage Project