Otter Lake is a lake located in Mason County, Illinois. It appears on the Clear Lake USGS 7.5-minute topographic quadrangle. The nearest populated place is Clear Lake, approximately 2.5 miles to the SW.
Mason County · Illinois
Otter Lake is a lake located in Mason County, Illinois. It appears on the Clear Lake USGS 7.5-minute topographic quadrangle. The nearest populated place is Clear Lake, approximately 2.5 miles to the SW.