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Subject
- Rivers[remove]350
- Inland Waters298
- Hydrology142
- Watersheds121
- Groundwater71
- Drainage53
- Groundwater flow31
- Water26
- Bodies of water19
- Lakes19
- Environment10
- Canals8
- Hydrography7
- Godāvari River Watershed (India)4
- Indus River Watershed4
- Mahanadi River Watershed (India)4
- Ravi River Watershed (India and Pakistan)4
- Restoration monitoring (Ecology)4
- Bays3
- Boundaries3