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Subject
- Rivers[remove]300
- Inland Waters298
- Hydrology140
- Watersheds120
- Groundwater71
- Drainage40
- Groundwater flow31
- Bodies of water12
- Environment10
- Canals4
- Godāvari River Watershed (India)4
- Indus River Watershed4
- Mahanadi River Watershed (India)4
- Ravi River Watershed (India and Pakistan)4
- Restoration monitoring (Ecology)4
- Boundaries3
- Geoscientific Information3
- Hydrography3
- Location3
- Yamuna River Watershed (India)3