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Subject
- Groundwater53
- Groundwater flow36
- Water27
- Aquifers24
- Stream measurements24
- Water quality22
- Streamflow18
- Water-supply10
- Hydrogeology9
- Saltwater encroachment8
- Dams7
- Locks (Hydraulic engineering)7
- Water levels7
- Irrigation6
- Droughts5
- Hydrology5
- Drainage4
- Geographic information systems4
- Municipal water supply4
- Artificial groundwater recharge3