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Nitrogen in the Chesapeake Bay Watershed - A Century of Change, 1950-2050

National Award for Superior Communication Product

News Event

Updating Pennsylvania Streamgage Datums

Over the next year, streamgage datums will be updated to reflect elevations in North American Vertical Datum of 1988 (NAVD88).

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Water Quality of Domestic Wells in Marcellus Region

New USGS study identifies factors affecting quality of groundwater used for domestic supply in north-central and north-east Pennsylvania

Center News

USGS Upgrades StreamStats for Pennsylvania

More accurate basin delineations and basin characteristics, and improved estimates of streamflow are now available for any stream location in PA.

Center News

Pennsylvania Waters

Our Center newsletter highlights recent happenings, new projects and publications, and more related to Pennsylvania's water resources.

Newsletters

Flights Above Pennsylvania to Map Geology

USGS low-level airplane surveys beginning mid-August 2022

News Release

News from USGS about Pennsylvania's water resources and related science

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USGS Updates Pennsylvania Drought Condition Web Tool

USGS Updates Pennsylvania Drought Condition Web Tool

USGS, in cooperation with the Pennsylvania Department of Environmental Protection, updated the Pennsylvania Drought Condition Web Tool.

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Drought Watch/Warning Lifted for all Pennsylvania Counties

Drought Watch/Warning Lifted for all Pennsylvania Counties

USGS groundwater and surface water monitoring data contributed to the Pennsylvania Department of Environmental Protection's (PaDEP) March 6, 2024...

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Testing New Water Quality Observation Methods In Philadelphia

Testing New Water Quality Observation Methods In Philadelphia

Advances in water quality monitoring technology have made it possible to measure more variables than ever before. 

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How "Groundwater Under the Direct Influence of Surface Water" has been identified in Pennsylvania

How "Groundwater Under the Direct Influence of Surface Water" has been identified in Pennsylvania

USGS, in cooperation with the Pennsylvania Department of Environmental Protection, compiled and evaluated data used to identify groundwater sources...

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USGS Releases Products Documenting Effects of Hurricane Ida

USGS Releases Products Documenting Effects of Hurricane Ida

The USGS Pennsylvania Water Science Center released three new products documenting the catastrophic flooding which resulted from Hurricane Ida on...

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PFAS chemicals detected in many rivers and streams across Pennsylvania

PFAS chemicals detected in many rivers and streams across Pennsylvania

Water samples from 161 Pennsylvania rivers and streams were tested for 33 different per- and polyfluoroalkyl substances and 76% of the studied streams...

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USGS and Partners Examine Causes of Increasing Salinity in Southeastern Pennsylvania Streams

USGS and Partners Examine Causes of Increasing Salinity in Southeastern Pennsylvania Streams

Villanova University's Department of Geography and the Environment, in partnership with USGS and Aqua Pennsylvania*, examined the effects of land...

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50th Anniversary of Hurricane Agnes

50th Anniversary of Hurricane Agnes

“Beginning on June 18, 1972, the remains of Hurricane Agnes produced floods in the Eastern United States from Virginia to New York that killed 128 peo...

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