On October 27, 2000, the Energy and Water Development Appropriations Act of 2001 was signed into law, which directed the USACE to proceed with detailed engineering designs for the Murrieta Creek Flood Control, Environmental Restoration
and Recreation Project. Historically, the cities of Murrieta and Temecula had experienced devastating flooding along Murrieta Creek. The purpose of this project was to prevent such flooding by conveying the 100-year flow within Murrieta
Creek. Phase 1 consisted of a concrete channel and was completed in 2004.