The study is to take place along Rio de Flag, located in Flagstaff, Arizona. The general length of the reach to be studied is highlighted in yellow in the image to the left.
The reach is located in the city of Flagstaff in Coconino County, Arizona between the upstream culvert at Herold Ranch Road, due East of the junction with S. River Valley Road, and the downstream culvert at Foxglenn park crossing under East Butler Ave. The reach is outlined in yellow to the left.