Pennsylvania Water Science Center


USGS Waterwatch:
Maps of Current Conditions

Pennsylvania Streamstats

Delineate watersheds and estimate streamflow

National Water Information System (NWIS)

View current and historical streamflow, groundwater level, and water-quality data for Pennsylvania

Real-time data

Historical data



USGS Water Science Centers are located in each state.

There is a USGS Water Science Center office in each State. Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii New York Vermont New Hampshire Maine Massachusettes South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

Groundwater Data

by Basin, County, Hydrologic Unit, or site ID
by Map Interface
Groundwater Toolbox
  • Groundwater Watch
    Compare current groundwater levels to historical record
  • WaterAlert
    Get condition updates by text message or email
  • NWIS Mapper
    View the locations of sites with USGS water data

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Page Last Modified: Wednesday 17th of September 2014 12:55:20 PM