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 (38.85086 -90.22431 38.93086 -90.14431)
Average elevation: 147 m
Minimum elevation: 120 m
Maximum elevation: 201 m