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What are examples of previous similar projects?
The Napa River Flood Protection Project, which is being implemented by the U.S. Army Corp of Engineers along approximately 6.9 miles of the Napa River, includes biotechnical bank stabilization in its suite of flood management features.
The City of Petaluma and the Petaluma Watershed Foundation recently received funding through Department of Water Resources’ Urban Streams Restoration Program to continue property acquisition and riparian habitat restoration of a floodprone section of riverfront property upstream of downtown Petaluma. Restoration activities include recreating floodplain terraces to increase capacity, stabilizing banks using bioengineering methods, restoring riparian habitat, and installing a river trail to allow public access.
Several Napa County vineyards have implemented biotechnical erosion control and/or stream bank stabilization methods to reduce erosion and fine sediment input to local creeks. At Domaine Chandon’s Carneros Vineyard, work is underway to use cemented dams, rock dams and velocity dissipaters (“stepping stones”) to reduce downcutting and help stabilize the stream. The Napa County Resource Conservation District has worked to stabilize the banks of Huichica Creek in the Huichica Creek Sustainable Vineyard using willow revetments and cuttings to trap sediment and reduce erosion. With grants from NRCS EQIP, Napa County Flood Control, and CALFED, extensive biotechnical techniques consisting of live willow brush mattresses, willow revetment, and live willow/rock groins were used along the Napa River and Selby Creek near Larkmead Vineyards in Calistoga to stabilize and revegetate eroding banks.
Streambank Stabilization
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