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


Surface Water Data

by Map Interface

Current Streamflow: Static Map | | Interactive Map

Floods/High Flows

Daily streamflow

Average streamflow: 7-day | 14-day  | 28-day 


by Basin, County, Hydrologic Unit, or site ID
Surface Water Toolbox

Surface Water Information and Studies

Data Applications and Highlights

From the River to You: USGS Real-Time Streamflow Information

Recent PA Surface Water Publications (full listing)

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