Success Dam

Success Dam is a dam across the Tule River in Tulare County, California in the United States. Serving mainly for flood control and irrigation, the dam is an earthen embankment structure 156ft high and 3490ft long. The dam lies about 5mi east of Porterville and impounds Lake Success, which has a capacity of 82300acre feet.The dam was initially authorized by the Flood Control Act of 1944 as part of an extensive system of dams and levees to provide flood protection in the Tulare Lake basin of the southern San Joaquin Valley. The U.S. Army Corps of Engineers (USACE) began construction of Success Dam in 1958 and finished in 1961, with the official dedication on May 18, 1962.The USACE found in 1999 that the alluvial deposits that form the foundations of the dam were unstable and that the dam would be at a high risk of failure in the event of an earthquake. In 2006, new regulations were passed that limited long-term water storage in the reservoir to 28800acre feet, 35% of capacity. A proposed $500 million project would increase the thickness of the dam by 350ft so that it could better withstand a quake in the region.