In total, the Service proposes to designate approximately 22,679 miles of streams and 533,426 acres of lakes and reservoirs in Idaho, Oregon, Washington, Montana and Nevada as critical habitat for the wide-ranging fish. The proposal includes 985 miles of marine shoreline in Washington.
The proposed revision is the result of extensive review of our earlier bull trout critical habitat proposals and 2005 designation, public comments and new information. The Service voluntarily embarked on this re-examination to ensure that the best science was used to identify the features and areas essential to the conservation of the species.
Bull trout depend on cold, clear water and are excellent indicators of water quality. Protecting and restoring their habitat contributes to the water quality of rivers and lakes throughout the Northwest.
The full report of this revision appears here Bull Trout critical habitat revision