Water Science for Maryland, Delaware and the District of Columbia
Click to access historical data for HA Bd 31
Click to access HA Bd 31 Groundwater Watch page
Click to access available Annual Data Report pages for HA Bd 31
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Click to access historical data for HA Ca 23
Click to access HA Ca 23 Groundwater Watch page
Click to access available Annual Data Report pages for HA Ca 23
Quick Link to Real-Time DataEnter a USGS site number: