Ecological Engineering completes the construction oversight of the removal of three dams and one bridge on Brigman Creek in east Multnomah County, Oregon and the placement of large wood structures instream to restore fish passage and natural fluvial geomorphology. Brigman Creek is a tributary to Johnson Creek with its confluence on property recently acquired by Oregon Metro for aquatic habitat restoration and stabilization. Mr. Gorman served as the lead engineer and project manager, providing the site assessment, wetland delineation, determination of opportunities and constraints, hydrologic modeling of the Brigman Creek basin, oversight of the hydraulic modeling, restoration design, negotiations with the regulatory agencies, preparation of plans and specifications, project management, floodplain no-rise certification, and construction oversight (ongoing into 2018). Plans and specifications were prepared to remove several dams, provide fish passage on Brigman Creek, restore instream habitat for native fish, expand riparian wetlands, add large wood instream for fish cover and structure, reconnect the floodplain, and add amphibian breeding habitat. Ecological Engineering provided construction oversight for the first phase of a two year construction schedule that was implemented in the summer of 2017 with a focus on Brigman Creek.
August 24, 2017 – Brigman Creek Dam and Bridge Removals and Large Wood Structure Placement
