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Subject
- Rain and rainfall[remove]547
- Precipitation (Meteorology)300
- Climate77
- Meteorology74
- Meteorology and weather forecasting70
- Rivers, creeks, streams, etc64
- United States Geological Survey Water-supply Paper59
- Measurement52
- Water and water supply51
- Weather48
- Irrigation43
- Temperature41
- Stream measurements40
- Groundwater and aquifers39
- United States. Weather Bureau38
- Floods37
- Watersheds37
- Winds37
- Meteorological stations36
- Streamflow34