Hydrology
Water and Floods

SEE OUR MAIN WEBPAGE FOR LATEST SHORT FUSED WATCHES AND WARNINGS!

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Advanced Hydrologic Prediction Service (AHPS)
TURN AROUND, DON'T DROWN!
Mid Atlantic River Forecast Center

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OBSERVATIONS

Latest Potomac, Shenandoah and Rappahannock Drainage Stages (text)

Latest Potomac Drainage Stages (map)

Latest Shenandoah and Rappahannock Drainage Stages (map)

Cooperative Observation Morning Report

US Geological Survey Gages for Maryland/DC

US Geological Survey Gages for Virginia

US Geological Survey Gages for West Virginia

IFLOWS/AFWS Gage Network (readings not available during ice and snow) (all dashes mean gage is not working)

Monthly Precipitation Totals

Latest 24 hour Rainfall Totals From Sterling Forecast Area

HYDROLOGIC FORECASTS

Advanced Hydrologic Prediction Service (AHPS)

Latest Daily Forecast for Potomac, Shenandoah and Rappahannock Drainage Area (text)

River Guidance from Mid Atlantic River Forecast Center (text)

River Statement (text - issued as needed for significant rises below flood stage)

Extended Flood Potential or Drought Statement (text - issued as needed)

PRECIPITATION FORECASTS

Hydrometeorological Prediction Center QPF (Quantitative Precipitation Forecast)

HPC QPF Link Two

HPC Winter Weather Forecasts

OTHER HYDROLOGIC GUIDANCE

Flash Flood Guidance for Maryland/DC (Sterling Forecast Area)

Flash Flood Guidance for Eastern West Virginia

Flash Flood Guidance for Virginia (Sterling Forecast Area)

Headwater Guidance for Quick Reacting Waterways (Potomac and Shenandoah Drainage)

Extended Flood/Drought Guidance from MARFC (issued as needed)

Email the Hydrologist