Mason Lake USGS Fiatt Quad, Illinois, Topographic Map

Mason Lake is a Reservoir in the state of Illinois (county of Fulton), located at latitude - longitude coordinates (also known as lat-long or GPS coordinates) of N 40.52698 and W -90.13595. Mason Lake is shown in the center of the topographic (topo) map, which is sourced from the United States Geographical Survey map USGS Fiatt quad. The nearest major town is Fiatt, IL.