USGS Water-Year Summary for Site 03294570

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	Available Parameters
	00010 Temperature, water(Min.,Mean,Max.)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Min.,Mean,Max.)
	00300 Dissolved oxygen(Min.,Mean,Max.)
	00400 pH(Med.,Min.,Max.)

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Water year 2024: 2023-10-01 to 2024-09-30

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USGS Water-Year Summary 2024

03294570 MILL CREEK AT ORELL ROAD NEAR LOUISVILLE, KY

LOCATION - Lat 38°04'41", long 85°53'24" referenced to North American Datum of 1927, Jefferson County, KY, Hydrologic Unit 05140101, on right upstream bank at bridge on Orell Road, 5.0 miles southwest of Louisville, and at mile 1.5.

DRAINAGE AREA - 13.5 mi².

REVISIONS HISTORY -

Revisions: Discharge for the periods: Dec 4-5, 2012; Jan 18-22, Feb 2-8, Mar 20-23, July 15-16, 2013; Jan 15-18, Feb 3-8, Mar 30-Apr 12, Apr 18-24, 2018 were revised on Aug 12, 2022, based on incomplete or incorrectly published values.

Datum of gage was previously reported as 405.63 ft above NGVD of 1929. This datum was revised to 405.96 above NGVD of 1929 on Dec 27, 2022.

SURFACE-WATER RECORDS

PERIOD OF RECORD - August 1999 to current year.

GAGE - Water-stage recorder and crest-stage gage. Datum is 405.51 feet above NAVD of 1988 and 405.96 ft above NGVD of 1929.

COOPERATION - Louisville and Jefferson County Metropolitan Sewer District.

EXTREMES FOR PERIOD OF RECORD - Maximum instantaneous discharge, 7430 ft³/s on March 26, 2002; maximum instantaneous gage height, 16.76' on April 27, 2011. Lowest daily mean discharge, 0.00 ft³/s many days during periods of backwater.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

WATER TEMPERATURE: October 2006 to current year.

DISSOLVED OXYGEN: October 2006 to current year.

pH: October 2014 to current year.

SPECIFIC CONDUCTANCE: October 2014 to current year.

EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: Maximum recorded, 1260 microsiemens per centimeter, February 22, 2021*; minimum recorded, 0 Dry microsiemens per centimeter, November 05, 2020.

pH: Maximum recorded, 9.6 units, March 8, 2016*; minimum recorded, 6.2 units, Nov. 1, 2020.

WATER TEMPERATURE: Maximum recorded, 31.3 C, July 4, 2010; minimum recorded, -1.5 C, January 27, 2014*.

DISSOLVED OXYGEN: Maximum recorded, 20.8 mg/L, March 2, 2010; minimum recorded, 0.0 mg/L, November 8, 2022*.

* Multiple occurrences of the same extreme in selected dataset. First occurrence listed.

Other extremes may have occurred during periods of non-published record.