Irwin Lake is a reservoir located in Mercer County, Illinois. It appears on the Aledo East USGS 7.5-minute topographic quadrangle. The nearest populated place is Sugar Grove, approximately 1.0 miles to the SW.
Mercer County · Illinois
Irwin Lake is a reservoir located in Mercer County, Illinois. It appears on the Aledo East USGS 7.5-minute topographic quadrangle. The nearest populated place is Sugar Grove, approximately 1.0 miles to the SW.