After nearly 4 years of excavation work, the first load of concrete for the new auxiliary spillway control structure at Folsom Dam was poured today. The control structure will be 146 feet high and contain six steel gates, each 23 feet wide and 34 feet tall. The gates will be 50 feet lower than the spillway gates in the existing dam. This will allow dam operators to release water for flood control storage earlier. The project, a collaboration among the U.S. Army Corps of Engineers, the U.S. Bureau of Reclamation, the State of California and the Sacramento Area Flood Control Agency, began in 2007 and is expected to be completed in 2017. When complete, the $1 billion project will serve as the cornerstone in providing a minimum 200-year level of flood protection to the Sacramento region.