Irwin Lake Dam USGS Aledo East Quad, Illinois, Topographic Map

Irwin Lake Dam is a Dam in the state of Illinois (county of Mercer), located at latitude - longitude coordinates (also known as lat-long or GPS coordinates) of N 41.24503 and W -90.71681. Irwin Lake Dam is shown in the center of the topographic (topo) map, which is sourced from the United States Geographical Survey map USGS Aledo East quad. The nearest major town is Aledo, IL.