This bill mandates the Secretary of the Interior, through the Commissioner of Reclamation, to conduct a feasibility study for a selective water withdrawal system at Glen Canyon Dam. The primary goals of this study are to optimize hydropower generation when releasing cold water and to prevent the entrainment of invasive species , aligning with existing environmental plans. The study, which must include hydrological modeling, requires consultation with the Secretary of Energy and Colorado River Storage Project power contractors. If the Secretary determines a system alternative is feasible under reclamation laws and the power contractors concur, construction of the chosen alternative may commence. The Secretary is required to complete this feasibility study within 18 months of the bill's enactment, with costs covered by nonreimbursable appropriated funds, and must identify funding sources within 90 days. The bill also specifies that its provisions do not affect the post-2026 Colorado River reservoir operations guidelines.