Construction on the dam was begun in 1962 and completed in 1968. The reservoir has a capacity of 235,700 acre-feet and a surface area of 6,430 acres at the conservation storage space elevation. The capacity at the top of the flood control storage space at the spillway crest elevation of 666 feet above mean sea level is 630,400 acre-feet, and the surface area is 11,830 acres. The drainage area above the dam is 1,318 square miles.