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Water Data
Current and historic water-resources information, to include surface-water, ground-water, water-quality, and biological data

Map/GIS Data
Digital spatial data for downloading and links to other online map/GIS sources

Publications
USGS Pennsylvania Water Science Center reports, abstracts and other USGS publications

General Information
About us and links to related government sites

Project Highlights
Summaries of select water resources investigations in PA

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Contacts in PA
USGS locations and contact info

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Many of the files on this site are in PDF format and require the free Adobe Acrobat Reader for viewing:

Special Interest

• Flow Statistic Data for Pennsylvania Streams
• StreamStats - Web-Based Tool Delineates Watersheds and Calculates Basin- and Streamflow Characteristics
  ----- Information about the product release
• Passive aerobic treatment of net-alkaline, iron-laden drainage from a flooded underground anthracite mine, Pennsylvania, USA
• 2006 Annual Report Information
• Chester County Water Resources monitoring web site updated -- December 20, 2006
• Flooding in Pennsylvania -- June 27-29, 2006
• Rising Ground-Water Levels -- June 24-29, 2006
• Estimates of Ground-Water Recharge Based on Streamflow-Hydrograph Methods
• USGS Compilation of Ground Water Quality Data in Pa. is Available
• Real-time groundwater monitoring information for the Potomac basin
• Strategic Plan for Science 2005-2010
• Emap PA - Online viewable map of Pennsylvania - can display watersheds, flood plains, mining, caves, sinkholes, etc. - operated by PA DEP
• USGS Ground Water Climate Response Network (national and Pennsylvania well monitoring information)
• Annual Hydrologic Data Report of Pennsylvania (USGS)

Current Hydrologic Conditions in Pennsylvania

Peak Stage and Flows as a Result of Tropical Storm Ivan Streamflow Conditions Ground-Water Conditions Lake and Reservoir Conditions Pennsylvania Drought Condition Monitoring
Pennsylvania Current Streamflow and Ground-Water Depth Duration Graphs New Publications SIR 2008-5154 Geophysical Logs, Aquifer Tests, and Water Levels in Wells in and Near the North Penn Area 7 Superfund Site, Upper Gwynedd Township, Montgomery County, Pennsylvania, 2002-2006 DS 357 Bathymetric Surveys of Lake Arthur and Raccoon Lake, Pennsylvania, June 2007 DS 314 Selected Ground-Water-Quality Data in Pennsylvania—1979-2006 OFR 2008-1207 Interpretation of Borehole Geophysical Logs at Area C, Former Naval Air Warfare Center, Warminster Township, Bucks County, Pennsylvania, 2007 SIR 2008-5102 Regression Equations for Estimating Flood Flows at Selected Recurrence Intervals for Ungaged Streams in Pennsylvania SIR 2008-5041 Spatial Distribution of Ground-Water Recharge Estimated with a Water-Budget Method for the Jordan Creek Watershed, Lehigh County, Pennsylvania Watershed Assistance Consortium for Scientific Assistance to Watersheds (CSAW) Sponsors program management and scientific technical assistance to watershed groups or local programs.
Educational Links  The water cycle Water Science for Schools La Ciencia del Agua para Escuelas Information on many aspects of water, along with pictures, data, maps, and an interactive center where you can give opinions and test your water knowledge Science in Your Watershed Scientific information organized on a watershed basis The USGS Learning Web Dedicated to K-12 education, exploration, and life-long learning

Regional Links

• USGS Activities in the Chesapeake Bay Region
• Office of the Delaware River Master

Drought Information

• Pennsylvania Drought Condition Monitoring
• Drought Status for Pennsylvania and Surrounding States