PENNSYLVANIA FLOW REPORT

Last Updated: December 18, 2025

Streamflow levels across Pennsylvania are currently 34.0% of normal, with the Monongahela River At Elizabeth reporting the highest discharge in the state with 21100cfs and gauge stage of 7.78 ft. Meanwhile, the Redbank Creek At Brookville is seeing a spike in streamflows today after experiencing a 82.88% increase since yesterday, and currently running at 203cfs.

Maximum gauge stage in the state was last observed at the Crooked Cr Bl Catlin Hollow At Middlebury Center, currently reporting a stage of 38.82ft. The Monongahela River At Elizabeth in the Lower Monongahela watershed is surging for this time of year at 21100cfs, about 28.2% of normal.

       



Pennsylvania experiences a humid continental climate with average precipitation of around 42 inches per year. Major surface flows include the Susquehanna River, Delaware River, and Ohio River. The Susquehanna River Basin encompasses 27,500 square miles and is home to numerous reservoirs and dams including the Conowingo Dam and Raystown Lake. Major tributaries of the Susquehanna include the Juniata River and West Branch Susquehanna River. The Delaware River Basin spans multiple states and contains several reservoirs and dams, such as the Francis E. Walter Dam and Beltzville Lake. The Ohio River Basin covers parts of western Pennsylvania and includes the Allegheny River and Monongahela River. Watershed and snowpack data can impact hydrology in these areas, particularly in relation to flooding and drought conditions.


       
       
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