Columbia Land Trust, Estuarine Wetland and Anadramous Fish Habitat Restoration – Clatsop County, Oregon

Mr. Gorman provided engineering design for the restoration of tidal wetlands on the Wallooskee River that had been disconnected from the river through the placement of agricultural dikes. Design components included selection of dike breach locations to minimize the probability of river migration and erosion, design of new auxiliary dikes to protect neighboring properties, stormwater detention design to protect the adjacent county road, and interior tidal channel design.  Mr. Gorman prepared construction cost estimates and assisted client with cost-benefit analysis for the project.