Last Updated: December 22, 2025
The streamflow conditions across Pennsylvania are showing a mix of below-normal and above-normal readings, suggesting a varied hydrological pattern as we assess the state's rivers and streams. The Susquehanna River, a crucial waterway that threads through much of the state, has spots like near Meshoppen showing increased levels potentially impacting nearby cities like Wilkes-Barre, with a 32.06 percent above normal streamflow and a gage height of 14.9 feet. In contrast, areas like Sunbury are experiencing reduced flows, marked by a 38.26 percent below-normal reading. Whitewater enthusiasts should note that Youghiogheny River, popular for such activities, is witnessing lower streamflow levels near Ohiopyle, with a 34.42 percent below-normal streamflow.
Conversely, areas around the French Creek at Utica and the Conewango Creek at Russell are showing significantly higher streamflows at 96.65 and 50.64 percent above normal, respectively, indicating a possible risk for communities along these waterways. Furthermore, the Delaware River, vital for eastern Pennsylvania, has also been experiencing reduced flows as seen at Lordville, NY with a 40.93 percent below-normal streamflow and a gage height of 7.52 feet, which could affect river activities around the area. These conditions call for heightened awareness for water-based recreation, potential environmental impacts, and local water resource management.
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.