Simpson Lake
Reservoir in Johnson County, Illinois · on the USGS Glendale quadrangle
37.46887, -88.71952
Maps that show Simpson Lake
Get them in the map app
Glendale, IL
Detailed map of terrain, trails and roads
USGS topo, 2024
Brownfield, IL
Old map for history, not navigation
USGS historical 15-minute topo (1917)
Brownfield, IL
Old map for history, not navigation
USGS historical 15-minute topo (1962)
Hidden Springs District Motor Vehicle Use Map (MVUM)
Forest roads and trails open to vehicles
Shawnee National Forest
Shawnee National Forest
Forest Service forest map
Network to Freedom Brochure Map - National Underground Railroad Network to Freedom Program
National Park Service Maps · National Underground Railroad Network to Freedom Program
U.S. Fish and Wildlife Service Alligator Snapping Turtle Range (2024)
Fish & Wildlife Service Refuge Maps
Continental Glaciation Map - Tule Springs Fossil Beds National Monument
National Park Service Maps · Tule Springs Fossil Beds National Monument
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-16 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-05 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).