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Little Colorado River Winslow Study

Little Colorado River Winslow, Arizona

Flood Risk Management Project

Draft Integrated Feasibility Report

(Feasibility Report and Environmental Impact Statement)

Navajo County, Arizona


Lead Agency: U.S. Army Corps of Engineers, Los Angeles District (Corps).

The U.S. Army Corps of Engineers (Corps), in cooperation with Navajo County Flood Control District, announces the availability of a Draft Integrated Feasibility Report and Environmental Impact Statement (DIFR) for the Little Colorado River at Winslow Flood Risk Management Study, Navajo County, AZ 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 (LCR) from the eastern end of the Ruby Wash Diversion Levee downstream (north) to the northern terminus of the Winslow Levee. A Notice of Intent to prepare the Draft Environmental Impact Statement was published on February 27, 2009 (74 FR 8918).

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 DIFR 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 tentatively selected plan is Alternative 10.1. 

The DIFR is available for a 45-day review period pursuant to the National Environmental Policy Act (NEPA).  Written comments pursuant to the NEPA will be accepted until the close of public review at close of business on July 18, 2016.

Comments should be addressed to:

Eduardo T. De Mesa; Chief, Planning Division;

U.S. Army Corps of Engineers; Los Angeles District;

915 Wilshire Blvd., Suite 930

ATTN: Kirk Brus, Environmental Coordinator

Los Angeles, California 90017

Comments or requests for further information may also be emailed to:



For further information, you may contact:

Mr. Richard Legere, Lead Planner, Phone: 602-230-6907

Or Kirk Brus, Environmental Coordinator, Phone: 213-452-3876

Mailing address and email address listed above


As part of the public involvement process, notice is hereby given by the Corps Los Angeles District of public meetings to be held:

Church of Jesus Christ of Latter-day Saints

205 Lee Street, Winslow, AZ 86047

Thursday, June 9, 2016

3:00 pm to 5:00 pm


6:30 pm to 9:30 pm

The public meeting will allow participants the opportunity to comment on the DIFR. Attendance at the public hearing is not necessary to provide comments.