LOCATION AND DESCRIPTION
Project consists of channel improvements to Lower LA, Rio Hondo Rivers and Compton Creek. Modifying/replacing as many as 25 bridges necessitated by channel improvements. Project will protect 464,000 of 500,000 residents in basin wide 133-yr floodplain. It will reduce basin wide 133-year floodplain from 52,000 to 3,800 ac (93% reduction). Los Angeles County population has increased to more than 8.7M. The ability of the existing flood control system to provide the design-level of protection has diminished. Increased flood flows, resulting from the impervious cover in watershed, causing increased runoff, loss of groundwater recharge and associate increase in flow from additional storm drains.
AUTHORIZATION: WRDA 1990 Sec. 101.b; Chief of Engineers Report dated 4 Jun 92.
ACTIVITIES FOR FY 2023: Continue project close out.
FY 2024 PLANNED ACCOMPLISHMENTS: Complete project close out.
ISSUES AND OTHER INFORMATION: The project was physically completed in 1998. Hydraulic model updates were completed in 2011.
CONGRESSIONAL INTEREST: Representatives Cardenas (CA-29), Schiff (CA-30), Sherman (CA-32), Kamlager (CA-37), Sanchez (CA-38) and Barragan (CA-44
|
FINANCIAL SUMMARY
|
As of 01 Mar 23
Construction
|
|
Estimated Federal Cost
|
$157,867,000
|
|
Estimated Non-Federal Cost
|
$52,670,000
|
|
Total Estimated Project Cost
|
$210,537,000
|
|
Allocation thru FY22
|
$157,867,000
|
|
President’s Budget for FY23
|
$0
|
|
Conference Add for FY23
|
$0
|
|
Approved IIJ FY23
|
$0
|
|
Workplan for FY23
|
$0
|
|
President’s Budget for FY24
|
TBD
|
|
Workplan for FY24
|
TBD
|
|
Balance to Complete After FY24
|
$0
|
U.S. ARMY CORPS OF ENGINEERS – LOS ANGELES DISTRICT
915 WILSHIRE BLVD., SUITE 1109
LOS ANGELES, CA 90017 http://www.spl.usace.army.mil