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Subject
- Water quality19
- Stream measurements13
- Streamflow13
- Water12
- Groundwater10
- Groundwater flow7
- Aquifers6
- Flood forecasting6
- Artificial groundwater recharge5
- Nutrient pollution of water5
- Nonpoint source pollution4
- Water table4
- Floods3
- River channels3
- River sediments3
- Water consumption3
- Water quality biological assessment3
- Water quality management3
- Water withdrawals3
- Water-supply3