The Hazel and Gold Basin landslides are large deep-seated glacial failures. They have contributed and continue to contribute large amounts of fine sediments to the North and South Forks of the Stillaguamish River. In recent years pool shallowing, fine sediment intrusion to the spawning gravels, and overall total suspended solids have negatively impacted salmon habitat throughout the watershed. The proposed project strategically place large engineered log jams at the slide sites, preventing toe-cutting of the slides and channeling the flow away from the sediment source. A similar project was completed this past summer just upstream of the Hazel slide and is functioning as designed to date. Easements would be purchased on both sides of the channel allowing the river to migrate within its floodplain. This project would complete initial log jam construction. Preliminary baseline data will be gathered this spring and summer, on water quality, fish use, and flow.
