Theodore Roosevelt Dam, the first major structure constructed by the Bureau of Reclamation on the Salt River Project (SRP), spans the Salt River to form a huge reservoir 24 miles long. The dam is 280 feet high and 723 feet long. Once the largest man-made lake in the world, Roosevelt Lake is still the biggest of the six SRP lakes, the largest reservoir in Arizona, and offers the most recreation opportunities. When full, the lake covers more than 22,000 acres near the confluence of Tonto Creek and the Salt River, with 112 miles of beautiful beaches and secluded coves. Game fish in Roosevelt include largemouth and smallmouth bass, bluegill, channel catfish and crappie. The Lake contains a wildlife area and as a wildlife refuge, is posted to permit hunting at certain times of the year.
Access along the southwest edge is easily reached from AZ 188, which runs close to the shoreline for all of its 18 mile length, and passes various marinas and campsites. There is little access to the northeast side as the terrain here is more mountainous.