The selected location is:

The elevation is 110 m ( 361 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) = -88.1078, 37.8044; 110 m

The state and county are Illinois: Gallatin County 17059
The HUC is Lower Ohio-Bay 05140203; Place point in HUC
The Omernik ecoregion is Interior River Lowland (more typical) 72
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Nearby named places (in order by distance)

1. Willow Pond Slough; Illinois: Gallatin Co. -88.1078, 37.8044 at a distance of 6 m
2. Hulda Lake; Illinois: Gallatin Co. -88.1078, 37.7903, ( 342 ft ) at a distance of 1560 m
3. Mill Slough; Illinois: Gallatin Co. -88.0983, 37.8192 at a distance of 1847 m
4. Crackle Ditch; Illinois: Gallatin Co. -88.1317, 37.8214 at a distance of 2832 m
5. Cow Pond Slough; Illinois: Gallatin Co. -88.1378, 37.7925 at a distance of 2955 m
6. Yellowbank Slough; Illinois: Gallatin Co. -88.1192, 37.8367 at a distance of 3729 m
7. Running Slough; Illinois: Gallatin Co. -88.1014, 37.8403 at a distance of 4029 m
8. Saint Patricks Church; Illinois: Gallatin Co. -88.1564, 37.8119 at a distance of 4364 m
9. New Haven, Township of; Illinois: Gallatin Co. -88.0992, 37.8433 at a distance of 4388 m
10. Black Branch mouth; Illinois: Gallatin Co. -88.1353, 37.8406 at a distance of 4697 m

The 7.5 minute series topographic maps for that area