The bill directs the Secretary of the Interior to conduct a feasibility study on a selective water withdrawal system at Glen Canyon Dam to optimize hydropower generation while preventing invasive species entrainment. If the system is deemed feasible, with consent from the power contractors, the Secretary can proceed with the chosen alternative. The study must be completed within 18 months, and its costs will be covered by appropriated funds. The bill also specifies that the funds for the study will not be reimbursed or returned to the United States and requires the identification of available funds within 90 days of enactment. The bill doesn't impact the Colorado River reservoir operations guidelines and strategies for Lake Powell and Lake Mead.