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) = -90.0546, 40.2353; 152 m

The state and county are Illinois: Mason County 17125
The HUC is Lower Illinois-Lake Chautauqua 07130003; 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. Mid-State Dragway; Illinois: Mason Co. -90.0546, 40.2353 at a distance of 5 m
2. Kelsey; Illinois: Mason Co. -90.0437, 40.2436 at a distance of 1310 m
3. White Oak Creek head; -90.0429, 40.2242 at a distance of 1580 m
4. Johnson Landing Strip; Illinois: Mason Co. -90.0418, 40.2217 at a distance of 1857 m
5. Long Branch; Illinois: Mason Co. -90.0379, 40.2172, ( 487 ft ) at a distance of 2456 m
6. Lakewood; Illinois: Mason Co. -90.0851, 40.2472 at a distance of 2915 m
7. Havana Regional Airport; Illinois: Mason Co. -90.0229, 40.2211, ( 499 ft ) at a distance of 3122 m
8. Bowman School; Illinois: Mason Co. -90.0376, 40.2606, ( 491 ft ) at a distance of 3164 m
9. White Oak School; Illinois: Mason Co. -90.0854, 40.2556 at a distance of 3460 m
10. Matanzas Church; Illinois: Mason Co. -90.0890, 40.2161 at a distance of 3619 m

The 7.5 minute series topographic maps for that area