Zackuse Creek Restoration and Culvert Replacement
Otak led this project to reestablish and restore 450 linear feet of Zackuse Creek upstream of the East Lake Sammamish Parkway SE culvert and replace the existing culvert with a fish passable box structure. Zackuse Creek has the potential to support a large kokanee spawning run and spawning kokanee have been frequently observed in low numbers below the East Lake Sammamish Parkway barrier culvert. Over the last few decades, the lower reach of the creek has experienced sediment deposition in an alluvial fan wetland from natural and developed conditions. The creek channel has migrated to converge on East Lake Sammamish Parkway SE, causing embankment failure and the introduction of roadside pollutants. This work included altering channel morphology to enhance the way the stream transports its sediment load as well as restoring, improving, and sustaining aquatic habitat.
Client: City of Sammamish
Project Manager: Gregory Laird
Type: Water and natural resources