The selected location is:

The elevation is 228 m ( 748 ft )
The gradient is: 0.0 percent
There is no aspect direction.
The local roughness is: 0.5 or slight
The location as decimal degrees (X,Y;Z) = -88.4720, 40.2958; 228 m

The state and county are Illinois: McLean County 17113
The HUC is Upper Sangamon 07130006; Place point in HUC
The Omernik ecoregion is Central Corn Belt Plains (more typical) 54
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Nearby named places (in order by distance)

1. Osman; Illinois: McLean Co. -88.4720, 40.2958, ( 748 ft ) at a distance of 5 m
2. Troster; Illinois: McLean Co. -88.4798, 40.3183 at a distance of 2588 m
3. Lotus; Illinois: Champaign Co. -88.4559, 40.3189, ( 743 ft ) at a distance of 2912 m
4. Marvin D Bradd Airport; Illinois: Piatt Co. -88.4945, 40.2717, ( 797 ft ) at a distance of 3284 m
5. Lone Tree Creek head; -88.4701, 40.2653 at a distance of 3387 m
6. Blue Ridge; Illinois: Piatt Co. -88.4882, 40.2678, ( 788 ft ) at a distance of 3396 m
7. Walker Church; Illinois: Champaign Co. -88.4320, 40.2969, ( 757 ft ) at a distance of 3407 m
8. Blue Ridge Special Creek head; -88.5145, 40.2789 at a distance of 4067 m
9. Madden Creek head; -88.4987, 40.2614 at a distance of 4439 m
10. Dickerson; Illinois: Champaign Co. -88.4223, 40.3183 at a distance of 4914 m

The 7.5 minute series topographic maps for that area