Fact Sheet

Investigations - Tres Rios GRR, AZ

U.S. Army Corps of Engineers, Los Angeles District
Published April 17, 2023

LOCATION AND DESCRIPTION:
Project is located southwest of the Phoenix metropolitan area in Maricopa County, AZ, and includes an 8-mile reach of the Salt and Gila Rivers, beginning at 83rd Ave and continuing downstream to the confluence with the Agua Fria River. The project will provide flood control protection and the use of treated effluent from a regional wastewater treatment facility to restore hydrological connectivity and sustain fish & wildlife habitat. The design includes a constructed engineered levee, restoration of 1,200 acres of riparian & wetland habitat, recreation development including hiking trails, nature walks, comfort stations, ramadas, cultural resources mitigation for identification, protection, and recovery of significant Native American artifacts. Potential General Re-evaluation Report (GRR) focus areas are Phases 4 & 5.

AUTHORIZATION: WRDA 2000, SEC 101(b)(4)

ACTIVITIES FOR FY 2023: Funds may possibly be used to coordinate and negotiate a Feasibility Cost Share Agreement (FCSA).

FY 2024 PLANNED ACCOMPLISHMENTS: With optimal funds continue the GRR investigation.

ISSUES AND OTHER INFORMATION: The Authorized Project Total Cost in WRDA 2000, SEC 101(b)(4) is $99,320,000.00. Current cost estimates exceed authorized cost-plus inflation. Therefore, GRR may possibly re-formulate alternatives of construction features not complete.

SUMMARIZED FINANCIAL DATA:
As of 11Apr23 Investigation

Estimated Federal Cost            $1,600,000
Estimated Non-Federal Cost         $1,500,000
Total Estimated Project Cost          $3,100,000

Allocation thru FY22                   $0
President’s Budget for FY23          

$500,000 Conference for FY23                  $0
Approved IIJA FY23                  $0
Workplan for FY23                   $0
President’s Budget for FY24              $0
Workplan for FY24                  TBD
Balance to Complete After FY24       $1,100,000
 

CONGRESSIONAL INTEREST: Senator Kelly and Sinema; Representatives Gallego (AZ-03), Stanton (AZ-04), Grijalva (AZ-07)

 

U.S. ARMY CORPS OF ENGINEERS – LOS ANGELES DISTRICT
915 WILSHIRE BLVD., SUITE 1109, LOS ANGELES, CA 90017
http://www.spl.usace.army.mil


Contact
Congressional Liaison
executiveoffice.spl@usace.army.mil