Lower Ten Mile River Salmonid Habitat Enhancement

In 2013, PCI began working with The Nature Conservancy (TNC) to plan and design projects to improve salmonid habitat value in the lower 1.7 miles of the South Fork Ten Mile River and 4.5 miles of the mainstem Ten Mile River in Mendocino County, California. The general premise compelling the Project is that off-channel rearing…


Wishon Quarry and Crane Valley Dam Restoration

In 2012, PG&E completed a seismic retrofit at Crane Valley Dam, the embankment that forms Bass Lake, a popular US Forest Service recreational area. A project-specific quarry was developed adjacent to the site on USFS property to supply the project. To restore both the 8-acre quarry site and the 32-acre stockpile and processing areas, PCI…


Green Gulch Enhancement Project

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…


Pond, Stream, and Native Revegetation Design/Build

PCI enlarged and enhanced an existing farm pond to create extensive habitat for native aquatic species as well as recreational features in the Sonoma Valley. PCI’s landscape architects developed sound, effective riparian and wetland restoration methods that also blend into the surrounding landscape and are aesthetically pleasing. The creek restoration included design and reconstruction of…


Stuart Creek Dam Modification and Fish Passage Improvements

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…


North Slope Sonoma Mountain Ecological Resources, Vulnerability
and Protection Reports

The North Slope Sonoma Mountain Regional Park and Open Space Preserve provides public access to one of Sonoma County’s most significant summits. The scenic grasslands and relatively unfragmented oak, bay, and redwood forests of the 821-acre Preserve provide crucial habitat for wildlife, watershed protection, and regional trail linkages. PCI was retained by the Sonoma County…


Taylor Mountain Regional Park and Open Space Preserve Master Plan

Taylor Mountain Regional Park and Open Space Preserve is a 1,089-acre site in east Santa Rosa opened for public use in 2013, and distinguished by rich and varied wildlife habitat and panoramic views of the Santa Rosa Plain. PCI was retained by RRM Design Group to assist with preparation of a Master Plan for the…


Thomas Creek Ranch Salmonid Enhancement Design

The residents of Thomas Creek Ranch offered to host a salmonid habitat enhancement project along their stretch of lower Green Valley Creek, a tributary to the Russian River. In cooperation with the Gold Ridge Resource Conservation District and a Technical Working Group for the creek, PCI developed conceptual and construction plans to provide winter rearing…


Jenner Headlands Preserve Public Access

PCI was retained by the Wildlands Conservancy and Sonoma Land Trust for planning and design of initial public access features for this 5,630-acre Preserve. The project involves the creation of a trailhead parking lot off Highway 1 north of Jenner, ADA-accessible restrooms and day-use area with picnic tables, ADA compliant access road and trail to…


Laguna Wetlands Preserve Restoration and Management Plan

PCI prepared the Laguna Wetlands Preserve Restoration and Management Plan for the City of Sebastopol. This Preserve lies at the edge of Sebastopol, where it is heavily used and highly valued by the public. It also encompasses highly valuable ecological and scenic resources and is protected by conservation easements. Management challenges on the Preserve include…


Presidio Trust Wetland Restoration

The Presidio Trust Wetland Restoration project will restore and create 8 acres of creek, freshwater wetlands, and brackish marsh at three sites within the Presidio of San Francisco, providing mitigation for impacts on wetlands from runway safety improvements at San Francisco International Airport. PCI coordinated approvals between two landowners—the Presidio Trust and Golden Gate National…


Pit River Spoils Piles Revegetation

As part of PG&E’s federal relicensing process for their Pit River hydroelectric facilities in Shasta County, PCI designed and implemented revegetation of over 20 acres, including three spoils piles, along the river. The sites include montane coniferous forest, oak woodland, and riparian habitats. The spoils themselves are very steep rock piles placed decades ago. Although…


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…


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…