The Bureau of Reclamation announces the completion of Safety of Dams modifications to Mormon Island Auxiliary Dam (MIAD) and the reopening of public parking at Mormon Island Cove, near Sophia Parkway, and public access across the crest of MIAD between Folsom Point and Sophia Parkway.
Located between Folsom and El Dorado Hills along Green Valley Road, MIAD is an important component to the Folsom Facility, which includes Folsom’s concrete and left and right wings dams and eight earthfill dikes, each of which serves to impound water to create Folsom Reservoir. Completing this project significantly enhances the continued safety of the communities downstream of MIAD.
The MIAD Improvement Modification Project was part of Reclamation’s Dam Safety Project, approved in 2007. Through the project, Reclamation has worked to reduce hydrologic (flood), seismic (earthquake) and static (seepage) risks at the Folsom Facility. In June 2010, Reclamation issued a Record of Decision for the MIAD Improvement Modification Project, selecting Alternative 4, Cellular Open Excavation and Overlay. The work was completed in two phases: