USGS Water-Year Summary for Site 07298100

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	Available Parameters
	62614 Elevation, lake/res, NGVD29(Max.,Min.,Mean)

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

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USGS Water-Year Summary 2023

07298100 MacKenzie Reservoir near Silverton, TX

LOCATION - Lat 34°32'43", long 101°26'16" referenced to North American Datum of 1927, Briscoe County, TX, Hydrologic Unit 11120104, at upstream side of dam on Tule Creek, 0.9 mi upstream from Rock Creek, 9.5 mi northwest of Silverton, and 22.7 mi upstream from mouth.

DRAINAGE AREA - 1,053 mi² of which 904 mi² probably is noncontributing.

SURFACE-WATER RECORDS

PERIOD OF RECORD - Oct. 1974 to Sept. 1986, Apr. 1999 to Sept. 2002 (daily mean contents), Oct. 2002 to current year (daily mean elevation). PERIOD OF RECORD, Water-Quality.-- CHEMICAL DATA: July 1975 to Jan. 1984. RADIOCHEMICAL DATA: Feb. 1981.

GAGE - Water-stage recorder. Datum of gage is NGVD of 1929. Satellite telemeter at station.

COOPERATION - Area-capacity curves developed by Freese and Nichols, Inc.

REMARKS - Some records listed in the "Period of Record" for surface water and water quality may not be available electronically. The reservoir is formed by a rolled earthfill dam 2,100 ft long. The dam was completed in Aug. 1974, and storage began in June 1974. The uncontrolled spillway is an open-cut channel just beyond the right end of the dam. The service spillway is an uncontrolled ogee-type weir across a concrete chute at the right end of the dam. A 30-in gated outlet concrete pipe discharges into a valve vault at the downstream toe of the dam and then into the creek bed downstream. The dam is owned by MacKenzie Municipal Water Authority and the water is used for municipal, industrial, and recreational purposes by the cities of Floydada, Silverton, and Tulia. Data regarding the dam are given in the following table:

                                               Elevation (feet)
Top of dam.......................................     3,127.0
Crest of spillway................................     3,111.0
Crest of spillway with ogee weir ................     3,100.0
Lowest gated outlet (invert).....................     2,961.0

EXTREMES FOR PERIOD OF RECORD - Maximum contents, 23,950 acre-ft, Oct. 15, 1986, elevation, 3,065.08 ft; minimum contents, 598 acre-ft, Oct. 1, 1974, elevation, 2,980.61 ft; maximum elevation, 3,034.85 ft. June 13, 2005; minimum elevation, 3,001.08 ft. May 21, 22, 2014.