Potomac River Guide Home

Potomac River Monitoring Sites

After a snowy winter, river levels in March are returning to normal, with water levels at or slightly below seasonal highs. 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

Much Above Normal

Above Normal

Normal

Below Normal

Much Below Normal

All-time Low

Limited Data

NOAA buoy

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Potomac River Guide Interactive Maps

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 March are returning to normal, with water levels at or slightly below seasonal highs. 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 avaialble for a number of buoys managed by NOAA. Click on a marker or choose a site below for details.