National Weather Service United States Department of Commerce

Baltimore/Washington Area Hydrology Page

Click on a tab below to view associated information!

River Observations
Hover over a location to see its name. Click on any point to see information for that site.

River Forecasts
Hover over a location to see its name. Click on any point to see information for that site.
Scroll below the map to see major rivers at a glance.

Local Precipitation Forecasts
(Hover over the timeframes to change the image.)

 

 

QPF

National Precipitation Forecasts, Days 1 through 3 (click to enlarge)
Please note: The below forecasts represent a basin average and may not represent local maxima.

Images from the NWS Weather Prediction Center (WPC)

Day 1 Rainfall

Day 2 Rainfall

Day 3 Rainfall