Authorization: Flood Control Act approved June 28, 1938, (flood control and Project Document HD 569, 75th Congress, 3d Session); Flood Control Act approved July 24, 1946 (irrigation storage); Flood Control Act approved June 30, 1948, and the Water Resources Development Act of 1990 (water supply storage)
Location: On the North Canadian River at river mile 394.3, about 2 miles north of Canton in Blaine County, Oklahoma, and about 90 miles northwest of Oklahoma City, Oklahoma.
Purpose: Flood control, water supply, irrigation, recreation, and fish and wildlife.
History of Construction: Construction began in December 1940 and was completed in May 1948. Embankment closure began in July 1947 and was completed in January 1948. Impoundment of the conservation pool was started in April 1948 and was completed in July 1948. Additional recreational facilities and the lake intake and filter plant were completed in 1972.
Type of Structure: The dam is a 15,140-foot-long, rolled, earthfill structure with a 720-foot wide, gated, concrete spillway which rises to a maximum height of 68 feet above the streambed. State Highway 58-A extends across the embankment and spillway.
Spillway & Outlet Works: The spillway is a gate-controlled, concrete, gravity, chute located in the right abutment. Spillway capacity at maximum pool (elevation 1641.7) is 339,200 cubic feet per second and at the top of the gates (elevation 1638.0) is 274,000 cfs. Spillway discharges are controlled by sixteen 40- by 25-foot tainter gates. The outlet works consist of two 7- by 12-foot sluices which pass through the spillway. Outlet capacity of the sluices varies from 2,280 cfs at pool elevation 1596.5 to 8,300 cfs at pool elevation 1638.0, the top of the gates. An irrigation outlet with access shaft and gate chamber is located in the right spillway approach wall. Control of low-flow discharges is provided by two 24-inch butterfly valve-controlled bypasses. Bank-full capacity below the dam is about 900 cfs.
An auxillary spillway is under construction. When completed, the channel to this spillway will be 480 feet in width and about one mile long with nine fuse gates. Each fuse gate will measure 53 feet in length, 21 feet in width, and 32 feet in height. They will be the largest gates of this type in the United States and second largest in the world.
Hydrologic Data: Estimated peak discharge for the October 1923 flood was 87,800 cfs. Estimated runoff for Oct. 7 to Oct. 19, 1923, was 300,450 acre-feet, which is equivalent to an average of 0.74 inchs of rain from the drainage area above the dam site.