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Tulsa's government responded to the 1970 flood by joining the "emergency program" of the National Flood Insurance Program (NFIP) and promising to adopt federal floodplain regulations. In August 1971, NFIP issued its block rate maps. A month later, on Labor Day, Flat Rock, Bird and Haikey creeks flooded, affecting many suburban communities.
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Fort Cobb Reservoir has a total capacity of 143,740 acre-feet (177,300,000 m 3) and covers an area of 5,956 acres (24.10 km 2) at top of flood pool level. The uncontrolled morning-glory spillway in the left abutment consists of a concrete intake structure, concrete conduit, and concrete chute and stilling basin.
At flood stage its elevation is at 437.5 feet (133.4 m) above sea level and it is capable of storing 966,700 acre-feet (1.1924 × 10 9 m 3) of flood waters. The lake's primary functions are to provide flood control, water storage, and recreational opportunities.
The primary purpose of the lake is flood control. It has become a popular recreation area. [1] According to the U. S. Army Corps of Engineers, the Hulah Lake project includes a public hunting area, bringing the total project area to 21,510 acres (8,700 ha). The dam is gravity type with an earthen core on a rock foundation.
In Oklahoma, Indigenous communities are the most likely to be at risk of flooding, with one recent study showing the danger increases by more than five times when compared to surrounding areas ...
Lake Wister was authorized for flood control and conservation by the Flood Control Act of 1938. The project was designed and built by the Tulsa District Corps of Engineers at a cost of $10.5 million. Construction began in April 1946, and the project was placed in full flood control operation December 1949. It is now part of Lake Wister State Park.
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