John Mack Slough USGS Harrell Brake Quad, Arkansas, Topographic Map

John Mack Slough is a Gut in the state of Arkansas (county of Calhoun), located at latitude - longitude coordinates (also known as lat-long or GPS coordinates) of N 33.34318 and W -92.45737. John Mack Slough is shown in the center of the topographic (topo) map, which is sourced from the United States Geographical Survey map USGS Harrell Brake quad. The nearest major town is Calion, AR.