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Hydrologic Data and Information

Current USGS Hydrologic Conditions in Pennsylvania

Historic USGS Hydrologic Data and Information for Pennsylvania

• StreamStats - Web-Based Tool Delineates Watersheds and Calculates Basin- and Streamflow Characteristics
• Estimates of Ground-Water Recharge Based on Streamflow-Hydrograph Methods
  
• Surface Water, Ground Water, and Water Quality Data from NWIS
  
  • Site Inventory
  • Surface-Water Data
  • Ground-Water Data
  • Water-Quality Data
    
• Statewide Observation Well Network (ground-water levels updated monthly)
  
• Annual Hydrologic Data Report of Pennsylvania
  
• Searchable database of Low-Flow Statistics for Pennsylvania Streams (by county, stream/basin, USGS map quad)
  
• Ground Water Climate Response Network

USGS Hydrologic Monitoring Networks in Chester County

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

Current USGS Streamflow Conditions in Surrounding States

Nationwide Hydrologic Data and Information from various sources