Public Notices

A public notice is the primary method for advising all interested parties of a proposed activity for which a permit is sought. Soliciting comments and information necessary to evaluate the probable impacts on the public interest. Public notices are also published to inform the public about new or proposed regulations, policies, guidance or permit procedures.  

Public Notices published by the Los Angeles District are posted on these three pages. There are two types of Public Notices; Regulatory and Project Public Notices. Comments are due by the expiration date of the public notice. 

Only comments submitted by email or in hard copy format through a delivery service, such as the U.S. Postal Service, can be accepted.   Comments must be submitted to the address listed in the public notice.

Public Notice Manager

Santa Ana River Mainstem Project: Prado Dam Spillway Modification

Los Angeles District
Published Aug. 18, 2021

The U.S. Army Corps of Engineers Los Angeles District has completed a Draft Supplemental Environmental Assessment/Environmental Impact Report Addendum for the Prado Dam Spillway Modification Project. The Corps has also completed a Dam Safety Action Decision Summary Report that provides additional information on the Dam Safety aspect of the Project. The Project is located in Riverside County, California.

The original Prado Dam project features, consisting of an earth-filled embankment, outlet works, and spillway, were designed and constructed by the U.S. Department of the Army in 1941 in response to the disastrous 1938 floods in southern California. The dam is owned, operated, and maintained by the USACE Los Angeles District for the primary authorized purpose of flood risk management. In addition to flood risk management, the Prado Dam and Basin is authorized for water conservation and recreation.