Steigerwald Floodplain Reconnection
Washougal, WA · Water Resources · 2023 · Client: Lower Columbia Estuary Partnership
Project details
As the largest single floodplain restoration in the Pacific Northwest to date, this project reconnected nearly 1,000 acres of floodplain habitat at the Steigerwald National Wildlife Refuge on the Columbia River. W2r led a 10-firm consulting team through multiple design, permitting, and construction phases to remove over two miles of existing levee, reconnect Gibbons Creek and its alluvial fan, and reduce flood risks for neighboring industrial properties, the local city, and the state highway by approximately five-fold.