USGS Water-Year Summary for Site 01480000

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	Available Parameters
	00010 Temperature, water(Min.,Max.,Mean)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

01480000 RED CLAY CREEK AT WOODDALE, DE

LOCATION - Lat 39°45'46.1", long 75°38'11.4" referenced to North American Datum of 1983, New Castle County, DE, Hydrologic Unit 02040205, on right bank 12 ft upstream from bridge on State Highway 48, 0.3 mi south of Wooddale, 2.3 mi north of Marshallton, and 4.9 mi upstream from mouth.

DRAINAGE AREA - 47 mi².

REVISIONS HISTORY - WSP 1141: 1948. WSP 1272: 1951(m). WSP 1432: 1944(M), 1945, 1946(M), 1948, 1949(M). WSP 2102: 1960(M), 1964(M), 1966-67(M). WDR MD-DE-DC-04-1: 2003 (P). WRD-US-2012: 2003 (September monthly mean).

SURFACE-WATER RECORDS

PERIOD OF RECORD - April 1943 to current year.

GAGE - Water-stage recorder, concrete control, and crest-stage gage. Datum of gage is 80.34 ft above North American Vertical Datum of 1988. Prior to Sept. 21, 1950, nonrecording gage at site 10 ft downstream at same gage datum.

REMARKS -

Water Year 2023: Records good, except those above 1,700 ft³/s, which are poor. No estimated discharges.

Water Year 2022: Records good, except those above 1,700 ft³/s and those for estimated discharges, which are poor.

Water Year 2021: Records good, except those above 1,700 ft³/s, which are poor.

Water Year 2020: Records good, except those above 1,700 ft³/s and those for estimated discharges, which are poor.

Water Years 2017-2019: Records good, except those above 1,000 ft³/s and those for estimated discharges, which are poor.

Water Year 2016: Records good, except those above 1,000 ft³/s and those for estimated daily discharges, which are poor.

Water Year 2015: Records good below 400 ft³/s and fair above, except those above 1,200 ft³/s and those for estimated daily discharges, which are poor.

Water Year 2014: Records good below 120 ft³/s and fair above, except those above 1,500 ft³/s and those for estimated daily discharges, which are poor.

Water Year 2013 and prior years’ accuracy statements can be found in Annual Water Data Reports.

Low flows augmented at times by inflow from Hoopes Reservoir located 1.7 mi upstream from gage on unnamed tributary to Red Clay Creek, capacity 2,000,000,000 gal. Water from Brandywine Creek is pumped into Hoopes Reservoir and is released into Red Clay Creek during periods of low flow. Water from Red Clay Creek is used for municipal supply. U.S. Geological Survey satellite data-collection platform at station.

WATER-QUALITY RECORDS

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.

REMARKS -

Missing data due to equipment malfunction.

EXTREMES FOR PERIOD OF RECORD -

TEMPERATURE: Minimum: -0.5°C on January 12, 2022 and multiple days throughout the period. Maximum: 29.2°C on July 23, 2022 and multiple days throughout the period.

SPECIFIC CONDUCTANCE: Minimum: 86 µs/cm on August 11, 2022; Maximum 845 µs/cm, on March 13, 2022.