Designation of Critical Habitat for Lost River Sucker and Shortnose Sucker: Final rule.

We, the U.S. Fish and Wildlife Service, designate critical habitat for the Lost River sucker and shortnose sucker under the Endangered Species Act. In total, approximately 146 miles (234 kilometers) of streams and 117,848 acres (47,691 hectares) of lakes and reservoirs for Lost River sucker and approximately 136 miles (219 kilometers) of streams and 123,590 acres (50,015 hectares) of lakes and reservoirs for shortnose sucker in Klamath and Lake Counties, Oregon, and Modoc County, California, fall within the boundaries of the critical habitat designation. The effect of this regulation is to conserve Lost River sucker's and shortnose sucker's habitat under the Endangered Species Act.