Los Angeles District Fact Sheets

Investigations - Imperial Streams Salton Sea, CA

Press Operations — Fri, 06 Sep 2024 19:30:00 GMT

LOCATION AND DESCRIPTION: The feasibility study area includes the Salton Sea, its tributaries, and the playa and surrounding areas suitable for restoration.

Investigations - San Diego County Shoreline (Oceanside), CA

Press Operations — Fri, 29 Mar 2024 16:33:00 GMT

LOCATION AND DESCRIPTION: The study area is located on the Pacific Coast of Southern California, north of the Mexican Border and south of Orange County, approximately 48 kilometers north of San Diego. San Diego County is a heavily populated area along this southern California coastline. The loss of protective beaches has caused backshore development to be vulnerable to wave attack and flooding from coastal storms, particularly at Oceanside. Previous studies have revealed that Federal navigation structures at Camp Pendleton Marine Corps Base have obstructed transport of sand to the beaches down the coast, which contributes to the erosion of these beaches.

Newport Bay Harbor, CA O&M

Press Operations — Fri, 26 Jan 2024 19:06:00 GMT

LOCATION AND DESCRIPTION: The harbor is in Orange County, approximately 24 miles southeast of the City of Los Angeles. Project elements consist of an entrance channel, main channel, secondary channels, turning basin, and east and west jetties. The harbor is a Critical Harbor of Refuge for the area.

Construction - Santa Ana River Mainstem, CA

Press Operations — Mon, 11 Dec 2023 02:41:00 GMT

LOCATION AND DESCRIPTION: The project is located along a 75-mile reach of Santa Ana River in Orange, San Bernardino and Riverside Counties.

Construction - Santa Ana River Mainstem, CA

Press Operations — Sat, 09 Dec 2023 05:00:00 GMT

LOCATION AND DESCRIPTION: The project is located along a 75-mile reach of Santa Ana River in Orange, San Bernardino and Riverside Counties.

PED - Los Angeles River Ecosystem Restoration Project

Press Operations — Mon, 30 Oct 2023 23:31:00 GMT

LOCATION AND DESCRIPTION: The Los Angeles River Ecosystem Restoration Project focuses on 11 miles of the river from the Headworks site in the San Fernando Valley to 1st Street in downtown Los Angeles.

Investigations - Little Colorado River (Winslow), AZ

Press Operations — Thu, 21 Sep 2023 04:53:00 GMT

LOCATION AND DESCRIPTION: The project area includes about 4.3 miles of flood risk reduction levee and improvements located along the Little Colorado River near Winslow, Arizona. Approx. 1,600 structures, including many of the city’s critical public facilities (hospitals, schools, nursing homes, utility infrastructure) are located within the 1% Annual Chase of Exceedance ACE, flood plan.

Investigations - Los Angeles County Drainage Area (Disposition)

Press Operations — Sat, 16 Sep 2023 17:19:00 GMT

LOCATION AND DESCRIPTION: The LACDA system includes ~45 miles of authorized levees and channels operated and maintained by the Corps, for flood risk management for metropolitan areas of Los Angeles County.

Construction - Western Rural Water, AZ Yavapai Apache Wastewater Treatment Plant

Press Operations — Sat, 16 Sep 2023 01:55:00 GMT

SECTION 595 AUTHORITY & PURPOSE: Water Resources Development Act (WRDA) 1999 Section 595 authorized the U.S. Army Corps of Engineers (USACE) to provide design and construction assistance for supply, wastewater treatment, environmental restoration, and surface water protection to rural communities. Section 4008 of the Water Resources Reform and Development Act of 2014 amended WRDA 1999 Section 595, authorizing $490M for technical assistance to small and rural communities in Idaho, Montana, Nevada, New Mexico, Utah, and Wyoming. WRDA 2020 added a $150M authorization for Arizona projects with WRDA 2022 increasing the authorization by $50M ($200M total). The project would ensure adequate wastewater treatment to the Reservation and help protect the Verde River which runs through the land

Construction - Western Rural Water, AZ Town of Superior-Queen Creek Restoration

Press Operations — Sat, 16 Sep 2023 01:13:00 GMT

LOCATION AND DESCRIPTION: Water Resources Development Act (WRDA) 1999 Section 595 authorized the U.S. Army Corps of Engineers (USACE) to provide design and construction assistance for water supply, wastewater treatment, environmental restoration, and surface water protection to rural communities. Section 4008 of the Water Resources Reform and Development Act of 2014 amended WRDA 1999 Section 595, authorizing $490M for technical assistance to small and rural communities in Idaho, Montana, Nevada, New Mexico, Utah, and Wyoming. WRDA 2020 added a $150M authorization for Arizona projects with WRDA 2022 increasing the authorization by $50M ($200M total).

Construction - Western Rural Water, AZ Quartzsite New Well No.4 and System Improvements

Press Operations — Sat, 16 Sep 2023 01:03:00 GMT

LOCATION AND DESCRIPTION: Western Rural Water Arizona Program: Water Resources Development Act (WRDA) 1999 Section 595 authorized the U.S. Army Corps of Engineers (USACE) to provide design and construction assistance for water supply, wastewater treatment, environmental restoration, and surface water protection to rural communities. Section 4008 of the Water Resources Reform and Development Act of 2014 amended WRDA 1999 Section 595, authorizing $490M for technical assistance to small and rural communities in Idaho, Montana, Nevada, New Mexico, Utah, and Wyoming. WRDA 2020 added a $150M authorization for Arizona projects with WRDA 2022 increasing the authorization by $50M ($200M total). Project includes improvements to the town’s existing drinking water infrastructure. The system currently has one well, with no redundancy.

O&M - Los Angeles County Drainage Area, CA

Press Operations — Mon, 11 Sep 2023 23:13:00 GMT

LOCATION AND DESCRIPTION: HANSEN DAM: Located four miles east of the City of San Fernando LOPEZ DAM: Located 2.2 miles NE of the city of San Fernando SANTA FE DAM: Located 15 miles NE of the City of Los Angeles SEPULVEDA DAM: Located 25 miles NW of the City of Los Angeles WHITTIER NARROWS DAM: Located 10 miles east of the City of Los Angeles LOS ANGELES COUNTY DRAINAGE AREA CHANNELS: Consists of 517 miles of channel, 45 miles are maintained by the Corps, the remainder is maintained by LA County Department of Public Works

O&M - Los Angeles County Drainage Area, CA

Press Operations — Mon, 11 Sep 2023 23:13:00 GMT

Regulatory Program - Salton Sea Management Program Phase I: 10-Year Plan Projects

Press Operations — Thu, 20 Apr 2023 16:42:00 GMT

LOCATION Various locations within, along, and adjacent to the Salton Sea in Imperial and Riverside

Regulatory Program - Geothermal and Lithium Development, Salton Sea, CA

Press Operations — Thu, 20 Apr 2023 16:24:00 GMT

LOCATION The Salton Sea is located 100 miles east of San Diego in Imperial and Riverside Counties, California. The southeastern area is located within the Salton Sea Known Geothermal Resource Area (SSKGRA), which currently encompasses the second largest geothermal field in the United States. This area has the potential to be the largest when fully developed. There are currently 11 existing plants within this area producing geothermal energy.

Regulatory Program - La Media Road Improvement Project, San Diego, CA

Press Operations — Thu, 20 Apr 2023 16:01:00 GMT

Location The project is located in the Otay Mesa neighborhood of the city of San Diego, California, immediately south of Otay Mesa Freeway and along La Media Road, north of the international boundary with Mexico.

O&M - Whitlow Ranch Dam, AZ

Press Operations — Thu, 20 Apr 2023 14:40:00 GMT

LOCATION AND DESCRIPTION: Located 50 miles SE of Phoenix, AZ, in Pima County, AZ. Project elements being operated and maintained: Dam (earth-fill; 25-feet-high; 978-feet-long); Outlet Works (circular conduit); and Un-gated Service Roads Reservoir (35,593 acre-foot cap spillway crest - 1976). There are no recreation facilities.

Construction - Tucson Drainage Area, AZ

Press Operations — Thu, 20 Apr 2023 14:23:50 GMT

LOCATION AND DESCRIPTION: The project consists of flood control and ecosystem restoration, which measures within the approximate 12-square mile of Tucson Arroyo/Arroyo Chico watershed in the City of Tucson located in Pima County, Arizona. The authorized project consists of two detention basin complexes.

O&M - Painted Rock Dam, AZ

Press Operations — Thu, 20 Apr 2023 01:00:29 GMT

LOCATION AND DESCRIPTION: Located about 20 miles NW of Gila Bend, AZ, and 120 miles SW of Phoenix, AZ. Project elements being operated and maintained: Dam (earth fill; 181-feet high: 4,780-feet long); Saddle Dike Outlet Works (circular conduit); Spillway (detached); Pilot Channel Reservoir (2,491,493-acre-foot cap spillway crest – 1977); and One recreation area (downstream at borrow pit area). This recreation area is closed by the State of Arizona due to contaminated water.

Investigations - Potrero Creek Watershed (Nogales Wash), AZ

Press Operations — Thu, 20 Apr 2023 00:49:12 GMT

LOCATION AND DESCRIPTION: Potrero Creek and Nogales Wash are tributaries to the Santa Cruz River in southern Arizona, originating in Nogales, Sonora, Mexico where development occurs without regards to the downstream impacts. Consequently, the economically disadvantaged City of Nogales AZ experiences severe and routine flash flooding originating in Mexico.