USGS Water-Year Summary for Site 07344489

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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

07344489 Lake Bob Sandlin near Mount Pleasant, TX

LOCATION - Lat 33°04'48", long 95°00'07" referenced to North American Datum of 1927, Titus County, TX, Hydrologic Unit 11140305, in control room in left abutment of service spillway at left end of Fort Sherman Dam on Big Cypress Creek, 1.7 mi upstream from Tankersley Creek, 2.5 mi upstream from bridge on U.S. Highway 271, 5.7 mi southwest of the county courthouse in Mount Pleasant, and 129.2 mi upstream from mouth.

DRAINAGE AREA - 239 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - Aug. 1977 to Sept. 2010 (contents), Oct. 2010 to current year.

GAGE - Water-stage recorder. Datum of gage is NGVD of 1929. To obtain elevation values in NAVD 1988, subtract 0.17 ft. Prior to Apr. 12, 1978, a nonrecording gage was located at same site and datum. Satellite telemeter at station.

REMARKS - Some records listed in the "Period of Record" for surface water may not be available electronically. The lake is formed by a rolled earthfill dam 10,800 ft long, including spillways. Deliberate impoundment began Aug. 8, 1977, and dam was completed by Apr. 1978. The spillway is an excavated channel cut through natural ground. The spillway is 4,500 ft wide, located to the left end of the dam. The service spillway is 289.5 ft wide with 160 ft of net flow width controlled by four 40- by 22.5-foot tainter gates. The dam was built, and is owned, maintained, and operated by the Titus County Fresh Water Supply District No. 1 to provide water for municipal use. Flow from 75.0 mi² above this station is controlled by Lake Cypress Springs on Big Cypress Creek and 36.0 mi² is controlled by Monticello Reservoir on Blundell Creek, a tributary to Big Cypress Creek. Conservation pool storage is 192,350 acre-ft. Data regarding the dam are given in the following table:

                                                                              Elevation (feet)
Top of dam............................................................          349.0
Crest of uncontrolled spillway........................................          341.3
Crest of gated spillway...............................................          316.5
Lowest gated outlet (invert)..........................................          294.5

EXTREMES FOR PERIOD OF RECORD - Maximum contents, 224,400 acre-ft, Nov. 5, 1994, elevation, 338.65 ft, using Table 1-C; minimum contents after initial filling, 119,700 acre-ft, Dec. 19, 20, 2006, elevation, 326.70 ft, using Table 3-C. Maximum elevation, 339.84 ft, Dec. 28, 2015.