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Water-Year Summary for Site 03426310

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Available Parameters
00060 Discharge(Mean,Ins.)  

Water year 2021: 2020-10-01 to 2021-09-30
 

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USGS Water-Year Summary 2021
03426310 CUMBERLAND RIVER AT OLD HICKORY DAM (TAILWATER), TN
LOCATION - Lat 36°17'49.44", long 86°39'31.09" referenced to North American Datum of 1927, Davidson County, TN, Hydrologic Unit 05130202, at right bank in powerhouse, at Old Hickory Dam, 2.0 mi west of Hendersonville, and at mile 216.2.
DRAINAGE AREA - 11,673 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1931 to September 1942, October 1947 to current year. Prior to July 1953, published as "at dam 3, near Old Hickory". July 1953 to September 1986 published as "below Old Hickory". November 5, 2018 the Corp of Engineers became responsible for the operation of both the stage and water quality gages at this site.
GAGE - The datum from the C.O.E. is 372.0' NGVD of 1929.
COOPERATION - Records provided by U.S. Army Corps of Engineers.
REMARKS - Flow regulated by reservoirs in Cumberland River basin.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage since at least 1793, 437.4 ft Dec. 31, 1926, at present datum, from profile by U.S. Army Corps of Engineers, discharge, 200,000 ft³/s.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 212,000 ft³/s, gage height, 435.20 ft., May 3, 2010 (Regulated); Maximum gage height, 438.25 ft., discharge, 173,000 ft³/s, Jan. 29, 1937 (Unregulated); minimum daily discharge, 86 ft³/s, Aug. 15, 1936; minimum gage height since filling of Cheatham Lake on Oct. 1, 1956, 383.49 ft, Sept. 10, 1962, at present datum.
WATER-QUALITY RECORDS
PERIOD OF RECORD - April 1979 to September 2004, December 2014 to October 2018. November 5, 2018 the Corp of Engineers became responsible for the operation of both the stage and water quality gages at this site.
PERIOD OF DAILY RECORD -
   SPECIFIC CONDUCTANCE: April 1979 to September 2004, December 2014 to October 2018.
   pH: April 1979 to September 2004, December 2014 to October 2018.
   WATER TEMPERATURE: April 1979 to September 2004, December 2014 to October 2018.
   DISSOLVED OXYGEN: April 1979 to September 2004, December 2014 to October 2018.
   TURBIDITY: October 1992 to October 2004.
INSTRUMENTATION - Water-quality monitor since April 1979.
REMARKS - Flow regulated by Old Hickory Dam and other reservoirs above station. Periods of missing record were due to instrument malfunctions. Supersaturation of dissolved oxygen may occur due to local hydraulic conditions. All parameters affected by release from Old Hickory Dam. Records for water temperature and specific conductance are excellent, pH and dissolved oxygen are good. Starting in the 2015 water year water temperature data are collected for the entire year; specific conductance, p.H. and dissolved oxygen data are collected March through October at cooperator request. November 5, 2018 the Corp of Engineers became responsible for the operation of both the stage and water quality gages at this site.
EXTREMES FOR PERIOD OF DAILY RECORD -


SPECIFIC CONDUCTANCE: Maximum, 269 microsiemens, Jan. 3, 4, 2002; minimum, 137 microsiemens, March 14, 1994.

pH: Maximum, 9.8 units, March 26, 1988; minimum, 6.4 units, July 28, 1991, July 24, 25, 26, 1993.

WATER TEMPERATURE: Maximum, 28.4°C, July 26, 2017; minimum, 2.1°C, Dec. 24, 1989.

DISSOLVED OXYGEN: Maximum, 17.5 mg/L Dec. 6, 11, 2002; minimum, 2.9 mg/L, Sept. 5, 1988, July 8, 1993.

TURBIDITY: Maximum recorded, 250 NTU, Feb. 7, 2004, minimum, 1 NTU, many days during the 1996, Sept. 20, 1997, and many days during the 2000, 2001, and 2002 water years, Oct. 4, 5, 6, 2002, Sept. 8, 2003.