Patuxent River below Brighton Dam, MD

River level and flood forecast · Montgomery County

Normal1.9 ftas of Mon 10:45 PM

The river is 7.1 ft below flood stage (9 ft).

Flow: 88 cubic feet per second (USGS).

The last 7 days and the forecast

0246810WedThuFriSatSunMonTueAction 8 ftFlood 9 ftNowObserved (ft)NWS forecast

NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.

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Flood stages

Flood stage9 ft
Action stage8 ft
Record crest (January 31, 2013)11.88 ft

What floods at each level

From the National Weather Service, highest first.

  • 9 ftHavilland Mill Road begins to flood.

Highest crests on record

  1. 11.88 ft — January 31, 2013
  2. 11.41 ft — May 1, 2014
  3. 11.03 ft — December 11, 2003
  4. 10.26 ft — May 6, 1989
  5. 9.22 ft — June 28, 2015

Recent crests: 9.22 ft (June 28, 2015) · 11.41 ft (May 1, 2014) · 11.88 ft (January 31, 2013) · 11.03 ft (December 11, 2003) · 7.82 ft (September 9, 1996)

Up and down the river, and nearby

Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (BGHM2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.