The selected location is:

The elevation is 152 m ( 499 ft )
The gradient is: 0.0 percent
There is no aspect direction.
The local roughness is: 0.0 or flat
The location as decimal degrees (X,Y;Z) = -89.9973, 40.2322; 152 m

The state and county are Illinois: Mason County 17125
The HUC is Lower Sangamon 07130008; Place point in HUC
The Omernik ecoregion is Central Corn Belt Plains (less typical) 54
The 1:100,000 map (if available); Switch to TerraServer
Zoom on that location with radius = 2 km; 5 km ; 10 km ; 20 km ; 30 km ; custom.

Nearby named places (in order by distance)

1. Peterville Hall (historical); Illinois: Mason Co. -89.9973, 40.2322 at a distance of 5 m
2. Peterville School (historical); Illinois: Mason Co. -89.9995, 40.2267 at a distance of 635 m
3. Havana Regional Airport; Illinois: Mason Co. -90.0229, 40.2211, ( 499 ft ) at a distance of 2502 m
4. Chaney Union School (historical); Illinois: Mason Co. -89.9612, 40.2386 at a distance of 3153 m
5. Chaney Cemetery; Illinois: Mason Co. -89.9590, 40.2294 at a distance of 3273 m
6. Roat School; Illinois: Mason Co. -90.0040, 40.2650 at a distance of 3691 m
7. Long Branch; Illinois: Mason Co. -90.0379, 40.2172, ( 487 ft ) at a distance of 3835 m
8. Johnson Landing Strip; Illinois: Mason Co. -90.0418, 40.2217 at a distance of 3963 m
9. White Oak Creek head; -90.0429, 40.2242 at a distance of 3982 m
10. Kelsey; Illinois: Mason Co. -90.0437, 40.2436 at a distance of 4149 m

The 7.5 minute series topographic maps for that area