Surface Water Data
by Basin, County, Hydrologic Unit, or site ID
Real-Time Data
Daily Data: Streamflow
Site Inventory: Site Selection Criteria
Statistics
Annual Hydrologic Data Reports
by Map Interface
Surface Water Toolbox
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Baseline Streamflow Estimator (BaSE)
Estimate baseline streamflow for ungaged streams in Pennsylvania -
StreamStats
Delineate watersheds and estimate streamflow - WaterWatch
Compare current streamflow to historical record - WaterAlert
Get condition updates by text message or email - NWIS Mapper
View the locations of sites with USGS water data - Rain Fall Calculator
Enter area size and rainfall amount to estimate the volume of total water from a rainstorm
Surface Water Information and Studies
Data Applications and Highlights
Interpretive StudiesPublications
From the River to You: USGS Real-Time Streamflow Information
Recent PA Surface Water Publications (full listing)
- Surface-water and groundwater interactions in an extensively mined watershed, upper Schuylkill River, Pennsylvania, USA
- Streamflow and water-quality monitoring in response to young-of-year smallmouth bass (micropterus dolomieu) mortality in the Susquehanna River and major tributaries, with comparisons to the Delaware and Allegheny Rivers, Pennsylvania, 2008-10
- A benthic-macroinvertebrate index of biotic integrity and assessment of conditions in selected streams in Chester County, Pennsylvania, 1998-2009
from non-USGS sources
National Weather Service offices for Pennsylvania
Susquehanna River Basin Commission
Delaware River Basin Commission
