Potomac River Guide Home

Potomac River Monitoring Sites

Water levels are monitored by USGS. Stream gages feed data to a national system that allows real-time data to be displayed. In addition, sophisticated forecasting systems are avaialble for a number of sites from the National Oceanographic and Atmospheric Administration (NOAA). Click on a marker or choose a site below for details.

Potomac River Guide Interactive Maps

The Lower Potomac

The Potomac Estuary

Mount Vernon to Reagan Airport

Mall Area

Georgetown to Great Falls

Potomac Piedmont

Upper Potomac

The North Branch

Boat Ramps

Monitoring Sites

Bridges and Ferries

Cruises and Charters


Search Potomac Sites

Potomac River Guide Interactive Maps

The Lower Potomac

The Potomac Estuary

Mount Vernon to Reagan Airport

Mall Area

Georgetown to Great Falls

Potomac Piedmont

Upper Potomac

The North Branch

Boat Ramps

Monitoring Sites

Bridges and Ferries

Cruises and Charters


Search Delaware Sites

Potomac River Monitoring Sites

Water levels are monitored by USGS. Stream gages feed data to a national system that allows real-time data to be displayed. In addition, sophisticated forecasting systems are avaialble for a number of sites from the National Oceanographic and Atmospheric Administration (NOAA). Click on a marker or choose a site below for details.