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Potomac River Monitoring Sites

After a snowy winter, river levels in April are returning to near-drought levels with flows below normal for this time of year. USGS stream gages feed data to a national system that allows real-time data to be displayed, with hourly updates. In addition, sophisticated forecasting systems are available for a number of buoys managed by NOAA. Click on a marker or choose a site below for details.

Flow Levels

all-time high icon All-time High

above normal icon Much Above Normal

above normal icon Above Normal

normal icon Normal

below normal icon Below Normal

much below normal icon Much Below Normal

low icon All-time Low

limited data icon Limited Data

NOAA buyo icon NOAA buoy

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The Lower Potomac The Potomac Estuary
Mount Vernon to Anacostia River Mall Area
Georgetown-Great Falls Potomac Piedmont
Upper Potomac The North Branch
Boat Ramps Monitoring Sites
Bridges and Ferries Cruises and Charters

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Potomac River Monitoring Sites

Potomac River Monitoring Sites

After a snowy winter, river levels in April are returning to near-drought levels with flows below normal for this time of year. USGS stream gages feed data to a national system that allows real-time data to be displayed, with hourly updates. In addition, sophisticated forecasting systems are available for a number of buoys managed by NOAA. Click on a marker or choose a site below for details.