Green Valley Creek Dam Removal

In the summer of 2019, PCI’s construction crew removed a channel-spanning concrete dam on Lower Green Valley Creek at Iron Horse Vineyards in Sebastopol, CA. Green Valley Creek is a major tributary to the Russian River and has historically provided critical spawning and rearing grounds for coho salmon. However, coho populations have declined due to…


Tolay Creek Stabilization and Restoration

PCI designed and installed restoration measures in lower Tolay Creek and a severely downcut and eroding tributary as partial mitigation for the widening of Highway 101.  Various repair strategies were evaluated for each reach, and PCI worked with Sonoma Land Trust and Cal Trans staff to develop a mitigation repair strategy acceptable to the San…


Dehlinger Winery Wetland Restoration

Based on the success of a previous stream stabilization project for the same client, PCI was hired to design and implement wetland restoration on the Dehlinger Winery property. The goal of the project was to protect and enhance a seasonal wetland on the property, where an eroding complex of gullies was lowering the water table…