USGS Water-Year Summary 2020
01475530 COBBS CREEK AT U.S. HIGHWAY NO. 1 AT PHILADELPHIA, PA
LOCATION - Lat 39°58'29", long 75°16'49" referenced to North American Datum of 1927, Philadelphia County, PA, Hydrologic Unit 02040202, on left bank 30 ft downstream from bridge on U.S. Highway No. 1 and 50 ft upstream from unnamed tributary at west city limits of Philadelphia.
DRAINAGE AREA - 4.78 mi².
PERIOD OF RECORD - October 1964 to September 1981. Prior to October 1973 published as "near Philadelphia". September 2004 to current year.
GAGE - Water-stage recorder, crest-stage gage, and concrete control. Datum of gage is 121.76 ft above National Geodetic Vertical Datum of 1929. Satellite telemetry at station.
COOPERATION - Station established and maintained by the U.S. Geological Survey. Funding for the operation of this station is provided by City of Philadelphia, Water Department, and the U.S. Geological Survey.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum discharge 4,930 ft³/s, Aug 1, 2004, gage height 11.18 ft.