Lake Limestone (Brazos River Basin)
Sterling C. Robertson Dam is located about seven miles northwest of Marquez, crossing the border of Leon and Robertson Counties. It dammed the Navasota River, a tributary of the Brazos River, to form the Lake Limestone which lies mainly in Limestone County. The Brazos River Authority owns and operates the lake facility for water supply and recreational purposes. The Texas Water Rights Commission permitted to build this reservoir by issuing Permit No. 5165 on May 6, 1974. Construction of the dam was completed in 1978. The Robertson dam is a zoned earthfill and concrete embankment of 8,500 feet in length including the service spillway. The 232 long service spillway is a type of gate-controlled concrete ogee consisted by five gates. Each gate measures 40 feet in width and 28 feet in height. According to TWDB's 2002 Survey, the reservoir has a capacity of 208,015 acre-feet with a water surface area of 12,553 acres at the top elevation of conservation pool, 363 feet above mean sea level. The dam controls a drainage area of about 675 square miles.