Alton topographic map
Click on the map to display elevation.
About this map
Name: Alton topographic map, elevation, terrain.
Location: Alton, Madison County, Illinois, 62002, United States (38.86338 -90.20901 38.93746 -90.08815)
Average elevation: 150 m
Minimum elevation: 120 m
Maximum elevation: 201 m