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What does it do?
The Common Features Project was designed to strengthen the American  River levees so they can safely pass a flow of 160,000 cubic feet per second(cfs).
Features:
The Common Features Project has installed roughly 24 miles of slurry wall up to depths of 80-feet, raised levees to provide adequate freeboard, addressed slope stability issues and corrected some erosion problems.
Construction Schedule:
The majority of levee work along the American River has been completed. There are several reaches of levee that need some work and the work schedule for those pieces are as follows:
Cost: Current Authorization is $250 million for the overall Project.
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North Levee Upstream of Watt Ave (Jacobs Lane):
"Remaining Sites": January 2011 - There are approximately 14 location in the levee that do not have a slurrywall in them due to conflict with existing infrastructure. While the levee can safely withstand the 100-year event it may not be able to protect against the design flow of 160,000 cfs. These sites are veing evaluated to see if remediation is required.
All Remaining
Sites |
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Mayhew Levee
Staging Area |
The Corps has awarded a contract to restore the area used as a staging area for the Mayhew Levee Improvement Project. Work will begin Fall 2011. |
| Howe Ave: |
Updated information coming soon. |
| NEMDC : |
Updated information coming soon.. |
Watt Ave: |
Updated information coming soon. |
R-6
Slurry
Wall
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The Corps has awarded a construction contract to close the gap in the slurry wall where there are low power lines that create the need for special construction.. The site is located downstream of the Campus Commons Golf Course. Work at this site is expected be begin in 2012. |
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Project: Common Features General Re-evaluation Report (GRR)
What does it do?
The GRR will investigate the flood protection system along the American River, Natomas, the east side of the Sacramento River, and the levees in North Sacramento to identify what improvements are needed to bring the system up to a 200-year standard.
Features:
The study will look at options in meeting the 200-year standard.
Construction Schedule:
The GRR is planned for completion in 2014. Construction associated with the report will start approximately a year after adoption of the report by Congress.
Cost: Unknown at this time but will be developed as part of the GRR.
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