Natomas - Reach A - Construction Map

Banner - Natomas Basin Reach A Levee Improvements

Natomas Basin - Reach A

The U.S. Army Corps of Engineers (USACE), in partnership with the California Central Valley Flood Protection Board (CVFPB), California Department of Water Resources (DWR) and the Sacramento Area Flood Control Agency (SAFCA), will be constructing 3.5 miles of levee improvements along the Garden Highway levee from Farm Rd to Gateway Oaks Dr. This work is part of the American River Watershed Common Features - Natomas Basin project authorized by Congress in 2014.  

Geotechnical engineering analyses have shown that the levees are susceptible to seepage and many portions of the levee have significant landside slope stability and long-term operations and maintenance concerns. Upcoming levee improvements are expected to begin in 2022, and will address identified deficiencies by constructing an adjacent levee to widen the existing levee, installing seepage cutoff walls up to 145 feet deep, and constructing landside seepage berms. 

Frequently Asked Questions (click on question for answer)

Contact Information

For more information on Natomas Basin levee improvements, 
please contact us at the following:



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

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Natomas Levees Overview


Progress Update - Oct 2022


Public Engagements

Natomas Reach A Status Update
Virtual Public Workshop
held April, 19, 2023

Click on the above image to view the briefing slides from the April 19 virtual public workshop. They provide a status update on construction work to be done in Natomas's Reach A, which extends along Garden Highway from Gateway Oaks Drive to Farm Road.
If you have questions about the briefing, please email

View Presentation Slides (PDF)