USGS Water-Year Summary 2021
01479000 WHITE CLAY CREEK NEAR NEWARK, DE
LOCATION - Lat 39°41'57.2", long 75°40'30.1" referenced to North American Datum of 1983, New Castle County, DE, Hydrologic Unit 02040205, on left bank, 0.4 mi downstream from the Baltimore and Ohio Railroad bridge, 1.1 mi downstream from Pike Creek, 3.8 mi east of Newark, and 5.0 mi upstream from mouth.
DRAINAGE AREA - 89.1 mi².
WSP 1051: 1933(M).
WSP 1382: 1932, 1934.
WDR MD-DE-83-1: 1978-82(P).
PERIOD OF RECORD - October 1931 to September 1936, June 1943 to September 1957, October 1959 to current year. Monthly discharge only for some periods, published in WSP 1302.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 7.86 ft above North American Vertical Datum of 1988. Nov. 17, 1931 to Sept. 30, 1936, June 4, 1943 to Sept. 30, 1957, and Oct. 1, 1959 to Apr. 7, 1976, at site 0.5 mi upstream at gage datum 2.6 ft higher.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage known, 23 ft, previous site and gage datum, in July 1937 (probably affected by backwater from railroad bridge which has since been raised and widened), from information by Baltimore & Ohio Railroad.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: October 2018 to current year. WATER TEMPERATURE: October 2018 to current year.
COOPERATION - Funding for water-quality collection is provided the United States Geological Survey.
INSTRUMENTATION - Multi-parameter water-quality monitor, October 2018 to current year.
EXTREMES FOR PERIOD OF DAILY RECORD -
TEMPERATURE: Minimum: -0.2 °C, multiple days throughout period of record, Maximum: 30.0°C, July 22, 2020.
SPECIFIC CONDUCTANCE: Minimum: 65 microsiemens/cm, August 4, 2020; Maximum 1,840 microsiemens/cm, February 19, 2021.