Construction of Proctor Dam started in June 1960 and the project was placed in operation in 1963 at a cost of approximately $14,500,467.73. The primary purpose of Proctor Lake is flood control.
The lake provides 310,100 acre-feet of flood storage capacity. It provides flood protection to about 40,200 acres of agricultural land below the dam. The lake assists in reducing flood damages to about 1,053,600 acres along the Brazos River below the mouth of the Little River.
The lake has a conservation storage capacity of 31,400 acre-feet at the top of the conservation pool (Elevation 1162.0 feet) for municipal water supply and other beneficial uses.