A site on the Colorado River in Coconino County, located about 7.5 miles southwest of Page, AZ, and 9 miles downstream of Glen Canyon Dam. Near the junction of the Paria River and the Colorado River, it is the traditional dividing line between the Upper and Lower Basins. Lees Ferry is named for John Doyle Lee, who operated a ferry there in the mid-nineteenth century. Source: Lees Ferry – Wikipedia.