The construction of the Whittier Narrows Dam and Reservoir was completed in 1957 by the U.S. Army Corps of Engineers to assist with flood control and water conservation. The USACE has determined that the Whittier Narrows Dam poses a very high risk of failure thereby exposing 25 cities and up to 1.1 million people to potentially catastrophic flooding. To repair the dam and prevent catastrophic failures, the USACE will be completing the Whittier Narrows Dam Safety Modification Project (Project). Funded by the federal government, the $385 million, multi-year effort is expected to complete construction in 2026.