The selected location is:

The elevation is 146 m ( 478 ft )
The gradient is: 1.1 percent
The aspect direction is: 177.2 degrees or S
The local roughness is: 0.5 or slight
The location as decimal degrees (X,Y;Z) = -90.0890, 40.2161; 146 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. Matanzas Church; Illinois: Mason Co. -90.0890, 40.2161 at a distance of 5 m
2. White Hall School; Illinois: Mason Co. -90.0895, 40.2022 at a distance of 1539 m
3. Matanzas School (historical); Illinois: Mason Co. -90.0993, 40.2311 at a distance of 1887 m
4. Matanzas; Illinois: Mason Co. -90.0995, 40.2311, ( 465 ft ) at a distance of 1895 m
5. Matanzas Beach; Illinois: Mason Co. -90.1040, 40.2431 at a distance of 3264 m
6. Dierker Lake; Illinois: Mason Co. -90.1276, 40.2217 at a distance of 3347 m
7. Lakewood; Illinois: Mason Co. -90.0851, 40.2472 at a distance of 3474 m
8. Lakewood Golf Course; Illinois: Mason Co. -90.1290, 40.2083 at a distance of 3514 m
9. Matanzas Lake; Illinois: Mason Co. -90.1057, 40.2453 at a distance of 3546 m
10. Mid-State Dragway; Illinois: Mason Co. -90.0546, 40.2353 at a distance of 3624 m

The 7.5 minute series topographic maps for that area