Sediment loading in streams and rivers (which includes erosion from run off and culvert failures at road crossings) contributes to the presence and accumulation of fine particles that significantly reduce downstream water quality (increased turbidity and reduced dissolved oxygen), as well as reducing the quality of salmon spawning substrate by smothering the substrate and the developing fish eggs in fine particles, such as sand, silt, and mud. Suspended sediment can also directly damage the gills of fish. To address this limiting factor, the salmon recovery plans note the importance of addressing sediment sources to reduce their inputs into the streams and rivers of Hood Canal

Reducing sediment loading (sediment abatement) is crucial for maintaining quality fish habitat, as well as preventing negative consequences associated with flooding downstream, which affects fish, wildlife, humans and their property. Decommissioning roads, or converting them to trails, replacing failing culverts, road maintenance, and other actions within a watershed system can significantly improve stream conditions.