Roosevelt Dam is located about 76 miles northeast of the Phoenix, Arizona metropolitan area. According to Arizona Oddities, at the time the dam was built, the area had more than 13,000 square miles of watershed from the mountains and the Mogollon Rim. No other large valley in the West came close to the magnitude of watershed available, and that’s why, following the National Reclamation Act of 1902, this particular location was chosen for Roosevelt Dam. Named for President Theodore Roosevelt, construction on the dam began in 1905 and was completed in 1911 at a cost of $10 million. The debt to the federal government was repaid in full in 1955.
Roosevelt Dam was the first major reclamation project in the West and was probably the most significant event in the entire history of the Salt River Valley. Before the dam was built, settlers would often have to leave during times of drought, but the dam’s creation provided a reservoir of lifesaving water.
Once the world’s highest masonry dam, Roosevelt Dam forms Roosevelt Lake which has a shoreline of 128 miles and a length of just over 22 miles. Its capacity is approximately 1.6 million acre-feet and its surface acreage, when full, is about 21.5 acres. The maximum depth of Roosevelt Lake is 188 feet.*
The Salt River Project (SRP), a quasi-governmental agency, manages the dams and lakes. In 1996, SRP completed a $430 million modification project on Roosevelt Dam, expanding Roosevelt Lake’s storage capacity by 20 percent.
(*Source: www.srp.net)