USGS Water-Year Summary for Site 08125500

Click to hide Water-Year Summary instructions and information

Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
Not all sites have reports available for every water year.

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

Select a water year

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

Print this page

USGS Water-Year Summary 2023

08125500 Oak Creek Reservoir near Blackwell, TX

LOCATION - Lat 32°02'26", long 100°16'05" referenced to North American Datum of 1927, Coke County, TX, Hydrologic Unit 12080008, on upstream side of dam, 20.0 ft upstream from FM 3399, 175 ft left of right end of dam, 1.2 mi downstream from State Highway 70, 4.3 mi southeast of Blackwell, 12.0 mi north of Bronte, and 18.0 mi upstream from mouth.

DRAINAGE AREA - 238 mi².

REVISIONS HISTORY - WDR TX-81-3: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - May 1953 to Sept. 1983, Mar. 1999 to Sept. 2002 (contents), Oct. 2002 to current year.

GAGE - Water-stage recorder. Datum of gage is NGVD of 1929. To get lake elevation values in NAVD88 add 0.88 ft. May 1953 to Sept. 1983, nonrecording gage and Mar. 1999 to Mar. 2003, water-stage recorder on left bank at Sweetwater municipal pump station, 1.9 mi. upstream at same datum. Satellite telemeter at station.

COOPERATION - Texas Water Development Board, TWDB and the U.S. Geological Survey, USGS

REMARKS - Some records listed in the period of record may not be available electronically. The reservoir is formed by a rolled earthfill dam 3,800 ft. long. The dam was completed in May 1952, and deliberate impoundment began May 12, 1953. The uncontrolled emergency spillway is an 800-foot-wide cut through natural ground, located 1,200 ft. from right end of dam. The service spillway is an uncontrolled cut channel through natural ground 300 ft. wide, located 2,000 ft. from right end of dam. The reservoir and dam are the property of city of Sweetwater. The dam was built to impound water for municipal and industrial uses by the cities of Sweetwater, Blackwell, and Bronte. Records of diversions may be obtained from the city of Sweetwater. Since Apr. 1962, West Texas Utilities Company has operated a steam generating power plant located on the reservoir. There is a gated outlet at the service spillway that can release water downstream to Oak Creek through a 24-inch concrete pipe. Data regarding the dam are given in the following table. The USGS is not responsible for errors in datum or elevations provided by other entities.

                                                                              Elevation (feet)
Top of dam............................................................         2,014.0
Crest of emergency spillway...........................................         2,005.0
Crest of service spillway.............................................         2,000.0
Lowest gated outlet (invert)..........................................         1,951.0

EXTREMES FOR PERIOD OF RECORD - Contents: May 1953 to Sept. 1983, Mar. 1999 to Sept. 2002, maximum contents observed, 49,100 acre-ft, Oct. 13, 1957, elevation, 2,003.80 ft; minimum contents, 3,040 acre-ft, Aug. 27, 28, 2002, elevation, 1,967.48 ft; Elevation: Oct. 2002 to current year, minimum elevation, 1,965.63 ft, June 4, 5, 2003.

WATER-QUALITY RECORDS

PERIOD OF RECORD - CHEMICAL DATA: Apr. 1964 to Jan. 1967, Nov. 1970, July 1972 to Nov. 1981, Apr. 1983. BIOCHEMICAL DATA: Apr. 1964 to Jan. 1967, Nov. 1970, July 1972 to Oct. 1973.