USGS Surface Water for USA: Peak Streamflow

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Peak Streamflow for the Nation

USGS 01477050 DELAWARE RIVER AT CHESTER PA

Delaware County, Pennsylvania

Hydrologic Unit Code 020402020607

Latitude 39°50'12", Longitude 75°22'00" NAD27

Drainage area 10,300.0 square miles

Contributing drainage area 10,300.0 square miles

Gage datum 0.0 feet above NGVD29

Water Year	Date	Gage Height (feet)	Stream- flow (cfs)
1973	1972-12-22
1974	1973-10-29
1975	1974-12-02
1976	1975-10-20
1977	1976-10-09
1979	1979-02-26
1980	1980-04-15
1981	1980-10-25
1982	1982-06-30
1984	1983-12-04
1985	1985-02-21
1993	1992-12-11

U.S. Department of the Interior | U.S. Geological Survey
Title: Surface Water for USA: Peak Streamflow
URL: https://staging.waterdata.usgs.gov/nwis/peak?

Page Contact Information: USGS Water Data Support Team
Page Last Modified: 2026-01-21 00:22:29 EST
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