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Sacramento Levee Upgrades Overview


American River Contract 3A Draft SEA/SEIR - April 2022
Notice of Availability
Draft SEA/SEIR Report
Frequently Asked Questions

American River Contract 1 Final SEA/SEIR - October 2021
Final SEA/SEIR Report
Final SEA/SEIR Appendices
Signed Finding of No Significant Impact (FONSI)

American River Contract 2 Final SEIS/SEIR - September 2021
Final SEIS/SEIR Report
Final SEIS/SEIR Appendices
Errata Sheet - March 2022

American River Contract 2 Draft SEIS/SEIR - June 2021
Notice of Availability
Draft SEIS/SEIR Report
Draft SEIS/SEIR Appendices
Frequently Asked Questions | Exhibits

American River Contract 1 Draft SEA/SEIR - June 2020
Draft SEA/SEIR Notice of Availability 
Draft SEA/SEIR Report
Draft SEA/SEIR Appendices
Frequently Asked Questions

Contact Information

For more information on
Sacramento Levee Upgrades,
please contact us at the following:



Mailing Address:
U.S. Army Corps of Engineers,
Sacramento District
1325 J Street, Room 1513
Sacramento, CA 95814

Levee upgrades to build on recent flood risk management efforts

The Sacramento Metropolitan area is one of the most at risk areas for flooding in the United States due to its location at the confluence and within the floodplain of two major rivers. Significant levee improvements, primarily through the construction of 22 miles of seepage cutoff walls, were completed on the American River in 2016 as part of the Water Resources Development Act (WRDA) 96/99 project. Now, this project will add up to 11 miles of bank protection for Lower American River levees. But this portion includes more than just the American River. Sections of the Natomas East Main Drainage Canal (NEMDC), Arcade Creek, and Magpie Creek would be improved to address identified seepage, stability, erosion, and height concerns.

Current Project Activities for American River Levees


Frequently Asked Questions