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: 2024-10-01 to 2025-09-30

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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.

SURFACE-WATER RECORDS

PERIOD OF RECORD - August 1999 to current year.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 405.63 feet above NGVD of 1929.

COOPERATION - Louisville and Jefferson County Metropolitan Sewer District.

REMARKS -

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, 1027microsiemens per centimeter, March 1, 2015*; minimum recorded, 17 microsiemens per centimeter, January 12, 2015*?

pH: Maximum recorded, 9.6 units, March 8, 2016*; minimum recorded, 6.3 units, June 27, 2016*.

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, 0.1 mg/L, March 21, 2008. (This value was recorded during a period of backwater intrusion from the Ohio). * Multiple occurrences of the same extreme in selected dataset. First occurrence listed.

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