Potomac River at Edwards Ferry near Poolesville, MD

Montgomery County, Maryland · USGS gauge 01644148 · NWS EDFM2 · Potomac River flood status · Maryland river levels

Is Potomac River at Edwards Ferry near Poolesville, MD flooding right now?

Potomac River at Edwards Ferry near Poolesville, MD measured 4.15 ft on 2026-09-11 00:45:00 UTC. That observation was 10.8 ft below its 15 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height
4.15 ft
as of 2 hours ago
Streamflow
data refreshed just now

Minor flooding here begins at 15 ft, with major flooding at 24 ft. The highest crest on record was 22.45 ft on Tue, Jun 5, 2018.

Flood forecast

NWS forecast, issued 12 hours ago. Forecasts are issued for select river points and update through the day.

Flood stages at this gauge

CategoryStageCurrent distance
Action12.25 ft8.1 ft below
Minor flood15 ft10.8 ft below
Moderate flood17 ft12.8 ft below
Major flood24 ft19.9 ft below

New to these numbers? What does flood stage mean? · How to read a river gauge · Why is the river rising?

Highest crests on record

StageDate
22.45 ft2018-06-05
21.8 ft2018-09-29
21.57 ft2018-09-29
21.25 ft2025-05-15
21.09 ft2014-05-17

Nearby gauges

GaugeDistanceCounty
Broad Run near Leesburg, VA4.2 miLoudoun County
Limestone Branch near Leesburg, VA5.9 miLoudoun County
Seneca Creek at Dawsonville, MD7.5 miMontgomery County
Goose Creek near Leesburg, VA7.9 miLoudoun County
S F Catoctin Creek at Rt 698 near Waterford, VA10.0 miLoudoun County
Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.

Sources: USGS monitoring location · NWS gauge & forecast