Specific threats to steelhead populations include:

• Blockage of access to 90 percent of historic spawning and rearing habitat above dams 1.

• •Dewatering of streams by dams and diversions

• •Loss of riparian vegetation from agricultural, residential, and commercial development, and related flood control activities

• Filling and degradation of estuarine habitat

• Introduction of non-native, exotic fish and amphibians

• Point and non-point pollution from up-slope land use practices

• •Establishing access above impassible barriers (road crossings, dams, debris basins)

• •Restoring flow regimes for migration and over-summering habitat

• •Reducing point and non-point pollution sources

• •Developing and implementing a comprehensive habitat monitoring and stock assessment program