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Subject
- Water quality184
- Groundwater150
- Groundwater flow114
- Water108
- Hydrogeology85
- Stream measurements68
- Streamflow66
- Aquifers41
- Water-supply38
- Hydrology29
- Nutrient pollution of water29
- Water table26
- Water quality biological assessment20
- Floods17
- Runoff17
- Suspended sediments17
- Water withdrawals17
- Contaminated sediments16
- Flood forecasting16
- Water temperature16