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Webinar: The Sacramento River Levee Setback: Floodplain Rehabilitation Design to Enhance Ecologic Function with Consider

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Thursday, 13 May 2021, 2:00

Thursday, May 13, 2021. 2:00 PM. Webinar: The Sacramento River Levee Setback: Floodplain Rehabilitation Design to Enhance Ecologic Function with Consider. Chris Bowles, Civil Engineer. Sponsored by National Oceanic and Atmospheric Administration and U.S. Fish and Wildlife Service. More information here.

The focus of this study is on a 4-mile reach of the Sacramento River downstream of the City of Sacramento where a major levee setback has been constructed as a part of a multi-objective flood control and habitat restoration effort. This project lies in the heart of a relatively unique and heavily regulated portion of the flood-control system surrounding the greater Sacramento area. This system is comprised of regulated levees, a large flood bypass system (Yolo Bypass) as well as large flood control reservoirs; however, many of the levees within this system are not constructed to modern engineering standards, which presents a significant risk to surrounding communities and prompts the need to improve the levee infrastructure. In addition, levees along many of the rivers within the California Central Valley, including the Sacramento River, are tightly confined along the river, which significantly limits the available habitat for native aquatic species, such as salmonids, whose spawning and rearing habitat have also been significantly reduced by the construction of dams. Given these constraints, this levee setback project represents an important step towards combining better flood management with significant increases in high quality aquatic habitat.

In our presentation, we will provide an update on the multi-disciplinary approach employed by cbec to integrate hydrodynamic modeling with interpretation of geomorphic response to maximize the restoration benefits that were incorporated into the design of this levee setback project.

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