Lake Livingston is on the Trinity River six miles southwest of Livingston in Polk, San Jacinto, Trinity, and Walker counties (at 30°38' N, 95°01' W). Livingston Dam, owned by the City of Houston and the Trinity River Authority, is an earthfill dam with a concrete spillway and was designed by Brown and Root, Incorporated. The dam has a spillway crest elevation of ninety-nine feet above mean sea level. The reservoir has a normal capacity of 1,788,000 acre-feet, covers 82,600 acres, and drains an area of 16,616 square miles. Construction of the dam by Forrest and Cotton, Incorporated, began in 1966 and was completed in 1969. The reservoir is used for municipal, industrial, and irrigation purposes.