Note: Review Per Lead
The Corps is proposing risk management plans to reduce the potential for and consequences of catastrophic flooding resulting from failure of the Whittier Narrows Dam during very rare flood events. These risk management plans include structural modifications to the dame to eliminate or minimize potential modes of dam failure, and non-structural measures to reduce the consequence of rare flood events. Risk is defined as a measure of the probability and severity of undesirable consequences or outcomes. The purpose of the Whittier Narrows DSM Project is to reduce the incremental risk - the difference between consequences associated with dam failure and the consequences associated with extreme discharges in which the dam did not fail - to the downstream public to tolerable levels.
California Department of Parks and RecreationCalifornia Highway PatrolCaltrans, District 7Department of ConservationDepartment of Fish and Wildlife, Region 5Department of Water ResourcesNative American Heritage CommissionOffice of Emergency Services, CaliforniaRegional Water Quality Control Board, Region 4Resources AgencySan Gabriel & Lower Los Angeles Rivers & Mountains ConservancyState Lands CommissionState Water Resources Control Board, Division of Drinking WaterState Water Resources Control Board, Division of Water QualityState Water Resources Control Board, Division of Water Rights