USGS Water-Year Summary for Site 03584600

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	Available Parameters
	00010 Temperature, water(Mean)
	00011 Temperature, water(Mean)
	00060 Discharge(Mean)

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

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USGS Water-Year Summary 2023

03584600 ELK RIVER AT PROSPECT, TN

LOCATION - Lat 35°00'50.95", long 86°59'40.74" referenced to North American Datum of 1927, Giles County, TN, Hydrologic Unit 06030004, on right bank 25 ft upstream from county road bridge, 800 ft above abandoned L&N Railroad bridge, 0.4 mi above Ford Creek, 0.8 mi south of Prospect, 2.9 mi upstream from Tennessee-Alabama State line, and at mile 36.5.

DRAINAGE AREA - 1,805 mi².

REVISIONS HISTORY - WSP 523: 1904-8, 1919-20. WSP 823: Drainage area. WSP 1436: 1920-22, 1923(M), 1924, 1927, 1929, 1931-32(M).

SURFACE-WATER RECORDS

PERIOD OF RECORD - July 1904 to February 1908, January 1919 to September 1994, August 2003 to current year. Published as "near Elkmont, Ala." 1904-8, 1919-34. Record for both sites published January to March 1934. Published as "near Prospect, Tenn." 1935-89.

GAGE - Data collection platform and pressure sensor and crest-stage gage. Datum of gage is 558.70 ft above NGVD of 1929. Datum of gage is 558.85 North American Vertical Datum of 1988. NAVD datum determined by NOAA National Geodetic Survey data sheet for benchmark "N 34". July 1, 1904, to Feb. 2, 1908, and Jan. 20, 1919, to Mar. 31, 1934: nonrecording gage 6.9 mi downstream at datum 8.93 ft. lower. January 1934 to September 1989, water-stage recorder at site 5.0 mi upstream at datum 4.59 ft higher.

REMARKS - Flow regulated by Woods Reservoir (station 03579000) since May 1952, and Tims Ford Lake (station 03580740) since December 1970.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood in March 1902 reach a stage of 40.9 ft, site and datum then in use, discharge, 130,000 ft³/s, and may have been equaled by a flood in March 1897, from reports of Tennessee Valley Authority.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 117,000 ft³/s, Mar. 17, 1973, from rating curve extended above 63,000 ft³/s on basis of slope-area measurement at gage height 38.17 ft and contracted-opening measurement at gage height 38.96 ft, site and datum then in use, maximum gage height, 40.12 ft; minimum discharge, 78 ft³/s, Sept. 29, 1961, caused by highway construction.

WATER-QUALITY RECORDS

PERIOD OF RECORD - October 2014 to Current year.

REMARKS - Records for water temperature are good except for periods as noted. Poor: Jan. 9, 2017 to Jan. 3, 2018, Feb. 3, 2020 to Oct. 26, 2020, October 26,2020 to April 20, 2021.

EXTREMES FOR PERIOD OF RECORD - Water temperature: Maximum, 90.0 °F, July 22, 2016; minimum 36.3 °F, Jan. 19, 2019.