Habitat

Logging, mining, grazing and construction have taken a significant toll on salmon and steelhead habitat, and some of that damage is irreparable and unavoidable. Logging increases silt, reduces shade and disturbs spawning beds. Destructive mining practices can result in the release of toxic levels of chemicals, destroying headwater tributaries. Even gravel mining in lower rivers increases stream temperature, alters the rivers course and interrupts the pool to rifle ratio. Grazing livestock harm spawning habitat by destroying vegetation and polluting streams. Development has resulted in the filling of wetlands and estuaries and reducing available habitat. The spread of cities, roads, and other development has put pressure on available habitat and increased pollution.