The purpose of the hearing is to receive testimony on the following bills: S. 300, to authorize appropriations for the Bureau of Reclamation to carry out the Lower Colorado River Multi-Species Conservation Program in the States of Arizona, California, and Nevada, and for other purposes; S. 1258, to amend the Reclamation Safety of Dams Act of 1978 to authorize improvements for the security of dams and other facilities; S. 1477, to authorize the Secretary of the Interior to carry out the Jackson Gulch rehabilitation project in the State of Colorado; S. 1522, to amend the Bonneville Power Administration portions of the Fisheries Restoration and Irrigation Mitigation Act of 2000 to authorize appropriations for fiscal years 2008 through 2014, and for other purposes; and H.R. 1025, to authorize the Secretary of the Interior to conduct a study to determine the feasibility of implementing a water supply and conservation project to improve water supply reliability, increase the capacity of water storage, and improve water management efficiency in the Republican River Basin between Harlan County Lake in Nebraska and Milford Lake in Kansas.