DESCRIPTION
Snohomish Conservation District partnered with the US Forest Service to provide controlled drainage along 5.4 mi. of Westside Higgins Rd 1820 to reduce risk of road failure, erosion and sediment production and to reduce effects on fish habitat and water quality in Higgins Creek, a major tributary to Deer Creek (an important tributary to the North Fork Stillaguamish River). Bull trout, steelhead and coho utilize Higgins Creek, while Chinook, pink, chum, and sea run cutthroat trout utilize lower Deer Creek. Higgins Creek has 4.5 miles of anadromous and resident fish habitat and has been identified as refugia for steelhead, coho and char in the Deer Creek basin (Collins et al., 1995).
The project applied various treatments, including adding and/or replacement of culverts, fill stabilization, installation of water bars and removal of road prism where needed for stability. The expected results include improved water quality and incremental reduction of the risk of landslides and sediment delivery. This will reduce the potential for erosion, scour, and sedimentation associated with the existing situation. This action is expected to help reduce road-associated failures and other sedimentation that is occurring from water collection and concentration. Better spawning, rearing and holding habitat conditions for salmon and other aquatic species will result. Monitoring has been an ongoing part of this restoration effort.