USGS Water-Year Summary 2022
01478000 CHRISTINA RIVER AT COOCHS BRIDGE, DE
LOCATION - Lat 39°38'14.6", long 75°43'40.4" referenced to North American Datum of 1983, New Castle County, DE, Hydrologic Unit 02040205, on right bank 60 ft downstream from highway bridge, 0.5 mi southeast of Coochs Bridge, 3.3 mi south of Newark, 3.6 mi upstream from Belltown Run, and 22.6 mi upstream from mouth.
DRAINAGE AREA - 20.5 mi².
- WDR MD-DE-79-1: 1943-70(P). WDR MD-DE-87-1: 1980-82(P).
PERIOD OF RECORD - April 1943 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 24.52 ft above North American Vertical Datum of 1988. Prior to September 14, 1944, nonrecording gage on upstream side of bridge at same gage datum. September 14, 1944 to May 13, 1969, recording gage at site on left bank at downstream side of highway bridge at same gage datum. May 26, 1969 to December 5, 1973, recording gage on left bank 82 ft. downstream from highway bridge at same gage datum.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: October 2018 to current year. SPECIFIC CONDUCTANCE: July 2021 to current year.
COOPERATION - Funding for water-quality collection is provided by the United States Geological Survey.
INSTRUMENTATION - Single parameter water-quality monitor: October 2018 to July 2021. Multi-parameter water-quality monitor: July 2021 to current year.
EXTREMES FOR PERIOD OF RECORD
TEMPERATURE: Minimum: 0.0 °C, multiple days throughout period of record; Maximum: 28.1°C, July 22, 2020. Temperatures may have been higher during period of equipment malfunction.
SPECIFIC CONDUCTANCE: Minimum: 59 µS/cm, multiple days throughout the period; Maximum: 1,960 µS/cm on January 16, 2022. Maximum is a result of road salt runoff.