Semantic search
- Foyle Basin
- Fraser Basin
- Gallegos-Chico Basin
- Gambia Basin
- Gandak River
- Ganges River
- Ganges-Brahmaputra-Meghna Basin
- Garonne Basin
- Gash River
- Gauja Basin
- Geba Basin
- Glama Basin
- Goascoran Basin
- Golok Basin
- Grande de Tarija
- Great Lakes
- Great Scarcies Basin
- Grijalva Basin
- Grijalva-Usumacinta
- Guadiana Basin