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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
• 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 2009-5101 Evaluation of Water-Chemistry and Water-Level Data at the Henderson Road Superfund Site, Upper Merion Township, Montgomery County, Pennsylvania, 1991–2008 SIR 2009-5129 Groundwater-Quality Assessment, Pike County, Pennsylvania, 2007 SIR 2009-5020 Physical and Vegetative Characteristics of a Newly Constructed Wetland and Modified Stream Reach, Tredyffrin Township, Chester County, Pennsylvania, 2000-2006 SIR 2008-5240 Factors Affecting Water Quality in Selected Carbonate Aquifers in the United States, 1993-2005 SIR 2009-5110 Bathymetry and Sediment-Storage Capacity Change in Three Reservoirs on the Lower Susquehanna River, 1996–2008 OFR 2008-1242 User’s Guide to the Water-Analysis Screening Tool (WAST): A Tool for Assessing Available Water Resources in Relation to Aquatic-Resource Uses 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

• Drought monitor well needed in McKean and Susquehanna Counties, PA
• Pennsylvania Drought Condition Monitoring
• Drought Status for Pennsylvania and Surrounding States