Making our mark in California and beyond.
We work in unique ecosystems and communities throughout this great land.
We are proud of our contributions to a portfolio of net positive projects with our project partners. Over the span of our 40-year history, we have completed thousands of projects that support public agencies, non-profit organizations, and private entities.
Butte Sink Mitigation Bank Salmonid and Floodplain Habitat Restoration
Colusa County, CA
The project goal is to restore existing rice fields to a dynamic forested floodplain mosaic that serve as rearing habitat for juvenile salmonids.
The site is used by Central Valley steelhead (Oncorhynchus mykiss), Central Valley fall/late fall and spring-run Chinook salmon, and Sacramento River winter-run Chinook salmon, and other riparian species. It is…
WRA used cutting edge floodplain and salmonid science for a process-based restoration that re-engaged natural processes to create a resilient site.
The Butte Sink Mitigation Bank is an approximately 310-acre property in Colusa County, California along Butte Creek, which supports the largest wild population of Central Valley spring-run Chinook salmon (Oncorhynchus…
Increased floodplain connectivity and drainage minimizes fish stranding and increases the extent and frequency of suitable juvenile salmonid rearing habitat.
WRA generated hydraulic models that predicted the depth, duration, and extent flooding from Butte Creek and the Colusa Weir onto the site to determine suitability of the proposed design for…
In our 40 years of experience, we have grown from our Bay Area beginnings to support our clients in over 30 states and counting.
Throughout our history, our work expanded to nearly all of California’s ecoregions from the southern deserts to the alpine regions, throughout the Great Valley and along the North Coast, we understand the unique habitats, species, and growing community needs statewide. And while our roots are in California, we have supported clients with projects across 30 states and counting. This is made possible from our growing team of experts including distributed professionals working in 5 western states.
Our purpose starts with people.
We believe that by creating an exceptional workplace, our employees will be able to do their best work and be able to meaningfully contribute to the sustainability of the environment and the communities in which we live.