Web Portal Changes:
Please visit https://www.weather.gov/owp/operations for more information.
Latitude: 39.621944° N, Longitude: 78.773333° W, Horizontal Datum: NAD83/WGS84
Current/Historical Observations:
Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.
Click individual graphics to enlarge.