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) = -89.7873, 40.3533; 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
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Nearby named places (in order by distance)

1. Kreilings Airport; Illinois: Mason Co. -89.7873, 40.3533, ( 502 ft ) at a distance of 5 m
2. White and Rowley Ditch; Illinois: Mason Co. -89.8037, 40.3469 at a distance of 1563 m
3. Spaits School; Illinois: Mason Co. -89.7712, 40.3619, ( 507 ft ) at a distance of 1670 m
4. Roos Ditch; Illinois: Mason Co. -89.7834, 40.3731 at a distance of 2228 m
5. Waldmeier Ditch; Illinois: Mason Co. -89.7601, 40.3544 at a distance of 2313 m
6. White School; Illinois: Mason Co. -89.7829, 40.3319 at a distance of 2400 m
7. White and Brown Ditch; Illinois: Mason Co. -89.7862, 40.3297 at a distance of 2617 m
8. Pleasant Hill Cemetery; Illinois: Mason Co. -89.8129, 40.3336 at a distance of 3082 m
9. Forest City, Township of; Illinois: Mason Co. -89.8193, 40.3397 at a distance of 3109 m
10. Union School; Illinois: Mason Co. -89.8295, 40.3458, ( 495 ft ) at a distance of 3681 m

The 7.5 minute series topographic maps for that area