STATION.--01475510 Darby Creek near Darby, PA
LOCATION.--Lat 39°55'44", Long
75°16'22", referenced to North American Datum of 1927 Delaware
County, Hydrologic Unit 02040202, on left bank, 5 ft upstream from
bridge on West Providence Rd, 2.3 mi upstream from Cobbs Creek, 8.4 mi
above mouth.
DRAINAGE AREA.--37.4 square miles.
PERIOD OF RECORD.--Discharge: February 1964 to
September 1990, and November 2018 to current year. Specific
Conductance: October 2019 to current year. Water Temperature: July 2000
to September 2000, and November 2018 to current year.
GAGE.--Water-stage recorder, crest-stage gage,
concrete control, and water-temperature sensor. Datum of gage is 18.1
ft above North American Vertical Datum of 1988 (NAVD88), from GPS
survey. Prior to March 10, 2022, the datum was erroneously reported as
18.9 ft above NAVD88 and 19.41 ft above National Geodetic Vertical
Datum of 1929.
COOPERATION.--Station established and maintained by
the U.S. Geological Survey. Funding for the operation of this station
is provided by the U.S. Geological Survey -- Next Generation Water
Observing System (NGWOS).
REMARKS.--