A bill to amend the River Basin Monetary Authorization and Miscellaneous Civil Works Amendment Act of 1970 with respect to the project for Libby Dam, Montana.

Amends the River Basin Monetary Authorization and Miscellaneous Civil Works Amendment Act of 1970 to modify the project for Libby Dam in Montana to authorize construction of a trout hatchery for mitigation of fish losses caused by the project.

Directs the Secretary of the Army, acting through the Chief of Engineers, to convey all interest in the hatchery to the Montana Fish and Game Commission. Stipulates that capitalized hatchery operation and maintenance costs shall be borne by the Federal Government at an estimated annual cost of $150,000.