Coho salmon and steelhead once occurred in abundance in the San Geronimo Creek watershed and the mainstem has been specifically identified as one of the reaches in greatest need of rehabilitation. Landowners along the creek have also become increasingly concerned with nearby bank erosion and potential flooding of adjacent infrastructure in annual high flow events.
Stillwater engineered a restoration solution that provided critical habitat for fish while simultaneously protecting the integrity of adjacent privately-owned floodplains and creek-side banks. To achieve this balancing act, Stillwater staff:
The San Geronimo Creek Habitat Enhancement Project highlights Stillwater’s broad expertise in engineering, geomorphology, fish biology and ecology that allow us to develop cost-effective restoration solutions that provide a benefit to humans and natural systems.
Location: San Geronimo Creek, Marin County, California
Clients: Marin County Department of Public Works and California Department of Fish and Wildlife
Project Manager: Joel Monschke
Based on ground-surveyed topography and bathymetry and HEC-RAS hydraulic modeling results, inundation maps were created that provided key information related to opportunities and constraints in terms of habitat enhancement and flooding potential.View the gallery