Lake Thunderbird is a reservoir located in Norman, Oklahoma. The lake was constructed between 1962 and 1965 for the purpose of providing municipal water to the nearby communities of Del City, Midwest City and Norman. It is formed by an earth-fill embankment (dam) 7,300 feet (2,200 m) long and up to 144 feet (44 m) high on the Little River.
Lake Thunderbird has a surface area of 6,070 acres with 86 miles of shoreline. The average depth is 15.4 feet, and the maximum depth is 57.6 feet.