Little Colorado River at Winslow, Navajo County, Arizona
Flood Risk Management Project
Final Integrated Feasibility Report and Environmental Impact Statement
Lead Agency: U.S. Army Corps of Engineers Los Angeles District
The U.S. Army Corps of Engineers Los Angeles District, in cooperation with the Navajo County Flood Control District, announces the availability of a Final Integrated Feasibility Report and Environmental Impact Statement (FEIS) for the Little Colorado River at Winslow, Navajo County, Arizona Flood Risk Management Project for review and comment. The study evaluates structural and non-structural alternatives for managing flood risk for the majority of City of Winslow and portions of unincorporated Navajo County for approximately eight miles of the Little Colorado River from the eastern end of the Ruby Wash Diversion Levee downstream (north) to the northern terminus of the Winslow Levee. A Notice of Availability for the Draft Integrated Feasibility Report and Environmental Impact Statement was published in the Federal Register on June 3, 2016 (81 FR 35756).
The LCR at Winslow study area is located in the middle of the LCR Watershed, in and near the City of Winslow in western Navajo County, Arizona. The study area includes the floodplain of the LCR from the Clear Creek confluence downstream (northwest) to the northern end of the existing Winslow Levee. The 49-square-mile study area encompasses the City of Winslow, including the Ruby Wash Diversion Levee, and portions of unincorporated Navajo County.
Alternatives include various combinations of structural and non-structural measures such as reconstruction of portions of the existing Winslow Levee and Ruby Wash Diversion Levee, levee setbacks, flood warning system and elevation of residential structures, and river channel conveyance improvements. The FEIS evaluates the No Action Alternative and ten action alternatives, Alternatives 1.1, 3.1, 7, 8, 9, 10, 10.1, 10.2, 10.3, and 10.4, in detail. The Recommended Plan is Alternative 10.1.
The FEIS is being filed with the Environmental Protection Agency and is being made available to interested parties for review and comment pursuant to regulations of the President's Council on Environmental Quality for implementing NEPA (40 CFR Parts 1500-1508). Copies are available upon request. These documents are currently under review by the heads of Federal agencies and the Governor of the State of Arizona. Upon receipt of their comments, the report of the Chief of Engineers will be finalized and submitted to the Secretary of the Army for transmittal to Congress.
Comments or requests for further information may also be emailed to: LCRWinslow@usace.army.mil