Mr. Gorman provided the engineering and project management for the preliminary design, permitting, and cost estimation for the replacement of a culvert under US Highway 101 in the Columbia River estuary to restore fish passage and estuarine wetlands. The area to be restored had been inadvertently converted to fresh water emergent and scrub-shrub wetlands in the early twentieth century through the placement of the existing culvert an elevation that was too high to allow tidal influence. He managed extensive hydraulic modeling of existing and proposed culverts under historical tidal fluctuations to optimize the culvert design for maximum tidal influence to the wetland without causing flooding to nearby homes. Mr. Gorman assisted the client in permitting negotiations with state and federal transportation and resource agencies.
Columbia River Estuary Study Task Force, Estuarine Wetland and Anadramous Fish Habitat Restoration – Chinook, Washington
