In this Programmatic Environmental Assessment (PEA), FEMA evaluates the potential environmental impacts of dam infrastructure projects eligible for the High Hazard Potential Dams (HHPD) grant program and other assistance programs in Montana, including tribal lands. The PEA provides statewide information on existing conditions and discusses potential impacts and mitigation measures during construction and operation of various project types. It offers mechanisms to assess site-specific conditions and impacts for individual projects to determine if they fall within the PEA's scope.