McMillan Canyon is a valley located in Morrow County, Oregon. It appears on the Ione South USGS 7.5-minute topographic quadrangle. The nearest populated place is Ione, approximately 3.2 miles to the W.
Morrow County · Oregon
McMillan Canyon is a valley located in Morrow County, Oregon. It appears on the Ione South USGS 7.5-minute topographic quadrangle. The nearest populated place is Ione, approximately 3.2 miles to the W.