USGS Water-Year Summary for Site 08110470

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

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

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USGS Water-Year Summary 2023

08110470 Lake Limestone near Marquez, TX

LOCATION - Lat 31°19'30", long 96°19'08" referenced to North American Datum of 1927, Leon County, TX, Hydrologic Unit 12070103, in left end bypass pier of Sterling C. Robertson Dam on the Navasota River, 7.5 mi northwest of Marquez, and 124 mi upstream from mouth.

DRAINAGE AREA - 675 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - Nov. 1978 to Jan. 2001 (contents observed at midnight), Oct. 1999 to Oct. 2004 (daily mean contents), Oct. 1995 to Oct. 2004 (elevation observed at midnight) Oct. 1999 to current. PERIOD OF RECORD, Water-Quality.-- CHEMICAL DATA: Jan. 1980 to Sept. 1997. BIOCHEMICAL DATA: Jan. 1980 to Sept. 1997.

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

COOPERATION - A new capacity table, provided by the Texas Water Development Board, was put into use Oct. 1, 1995.

REMARKS - Records good. The lake is formed by a rolled earthfill dam 11,395 ft long, including the spillway. The lake was built for water conservation. The dam is owned by the Brazos River Authority. Deliberate impoundment began on Oct. 16, 1978. The spillway is an uncontrolled broad-crested weir 3,000 ft long located near left end of dam. The spillway for normal flood releases is a gated concrete gravity structure with an ogee weir section and stilling basin located near center of dam. It is controlled by five 40- by 28-ft tainter gates. There are two 4- by 8-ft slide gates located in each of the two center piers of the spillway that discharge into the stilling basin. These gates can also be opened during extreme floods. A low-flow outlet, consisting of a 10-in-diameter cast iron pipe, is located in the left end of pier. In addition, there are two 36-in (outside diameter) steel cylinder pipes located in the right end pier for water supply releases. The lowest invert for low flow and water supply releases is at elevation 325.50 ft. The city of Mexia releases various amounts of wastewater effluent into stream above lake. Data regarding dam are given in the following table:

                                                                                   Elevation (feet)
Top of dam.....................................................................       380.0
Design flood...................................................................       370.0
Crest of spillway..............................................................       369.6
Top of gates...................................................................       365.0
Concrete gated spillway........................................................       337.0
Lowest gated outlet (invert)...................................................       322.0

Water-quality records were published as:

Site ID           Site name
311937096194601   Lake Limestone Site AR
311941096191401   Lake Limestone Site AC
312458096205101   Lake Limestone Site BC
312625096205901   Lake Limestone Site CC
312622096224201   Lake Limestone Site DC
312726096240001   Lake Limestone Site EC

Some records listed in the "Period of Record" for surface water and water quality may not be available electronically.

EXTREMES FOR PERIOD OF RECORD - Nov. 1978 to Sept. 2003: Maximum contents, 245,000 acre-ft, Dec. 21, 1991; minimum contents after initial filling, 138,400 acre-ft, Nov. 23, 1996; Nov. 1978 to current year: maximum elevation, 364.39 ft, Dec. 21, 1991; minimum elevation, 352.73 ft, Dec. 2,3, 2011.