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Hydrologic Data and Information

Current USGS Hydrologic Conditions in Pennsylvania

Historic USGS Hydrologic Data and Information for Pennsylvania

USGS Hydrologic Monitoring Networks in Chester County

Additional Hydrologic Data and information from non-USGS sources in Pennsylvania

Current Information from the U.S. Army Corps of Engineers (USACE)

River forecasts from the National Weather Service ( NWS )

• River forecasts from the Middle Atlantic River Forecast Center
• River forecasts from the Ohio River Forecast Center

Emap PA - Online viewable map of Pennsylvania - can display watersheds, flood plains, mining, caves, sinkholes, etc. (PA DEP)

Current USGS Streamflow Conditions in Surrounding States

Nationwide Hydrologic Data and Information from various sources