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…

Mill Creek is a major tributary to the Russian River and harbors some of the best habitat for coho salmon and steelhead trout in the watershed. Fish access to 11.2 miles of excellent spawning and rearing habitat was severely blocked for decades by a 5-ft tall concrete flashboard dam that the National Marine Fisheries Service…

PCI designed and provided construction oversight on three fish passage improvement projects on Stuart Creek, a tributary to Sonoma Creek outside of the town of Glen Ellen, for Sonoma Land Trust. Stuart Creek is a fairly steep, cobble and boulder bed stream with high sediment transport potential. Three man-made partial or total fish passage barriers…

Green Gulch Creek is a tributary to Redwood Creek in Marin County, one of the last streams south of Lagunitas Creek with a remaining wild run of coho salmon. The San Francisco Zen Center operates a meditation center and one of California’s oldest continuously certified organic farms on the property. Historic realignment and hardening of…