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Water-Year Summary for Site 03293000

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

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

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USGS Water-Year Summary 2023
03293000 MIDDLE FORK BEARGRASS CREEK AT LOUISVILLE, KY
LOCATION - Lat 38°14'14", long 85°39'53" referenced to North American Datum of 1927, Jefferson County, KY, Hydrologic Unit 05140101, on right bank at Louisville, 75 feet downstream from bridge on Old Cannons Lane, 1.7 miles downstream from Weicher Creek, 5.4 miles upstream from confluence with South Fork, 7.0 miles upstream from Ohio River, and at mile 5.4.
DRAINAGE AREA - 18.9 mi² of which 0.50 mi² probably is noncontributing.
REVISIONS HISTORY -

WSP 1625: 1945(M), 1948(M), 1950(P), 1951-52(M), 1954-55(M), 1957(M), drainage area. WRD KY 72-1: 1950(M).

Datum of gage for period Jul 26, 1971 to Dec 22, 2022 reported as 476.70 feet above NGVD of 1929.  This datum was revised to 476.26 feet above NGVD of 1929.

SURFACE-WATER RECORDS
PERIOD OF RECORD - August 1944 to current year.
GAGE - Water-stage recorder with telemetry and crest-stage gage. Datum is 475.76 feet above NAVD of 1988 and 476.26 ft above NGVD of 1929.  Prior to March 12, 1968, water-stage recorder at same site at datum 1.0 foot higher. March 12, 1968 to July 26, 1971, water-stage recorder at site 1,000 feet upstream at datum 1.0 foot higher.
COOPERATION - Louisville and Jefferson County Metropolitan Sewer District.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in March 1943 reached a stage of 9.1 feet, present site and datum, from information by local residents.
EXTREMES FOR PERIOD OF RECORD - Maximum instantaneous gage height, 9.13 feet on July 12, 2015; maximum instantaneous discharge, 6070 ft³/s on September 23, 2006. Lowest daily mean discharge, 0.00 ft³/s August 27, 1952.
WATER-QUALITY RECORDS
PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: October 2015 to current year.

pH: October 2015 to current year.

WATER TEMPERATURES: April 1988 to September 1992, July 1996 to October 1996, October 2006 to current year.

DISSOLVED OXYGEN: April 1988 to September 1992, July 1996 to October 1996, October 2006 to current year.

REMARKS - Water Quality daily values and partial days are not qualified prior to 08/16/2021.

Water Quality record quality is rated internally. For questions about record quality ratings, please send email to gs-w-oh_NWISWeb_Data_Inquiries@usgs.gov.
EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: Maximum recorded, 3,930 microsiemens, Febuary 21, 2015, minimum recorded, 61 microsiemens, April 29, 2017.

pH: Maximum recorded, 9.0 units, April 3rd, 2022*; minimum recorded, 6.8 units, July 31, 2019*.

WATER TEMPERATURES: Maximum recorded, 35.4°C, August 16, 1988; minimum recorded, -0.2°C, January 16, 2009.

DISSOLVED OXYGEN: Maximum recorded, 25.1 mg/L, April 28, 1992; minimum recorded, 0.4 mg/L, October 26, 1991 and September 25, 2010.

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

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