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) = -88.1353, 37.8406; 110 m

The state and county are Illinois: Gallatin County 17059
The HUC is Lower Wabash 05120113; 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. Black Branch mouth; Illinois: Gallatin Co. -88.1353, 37.8406 at a distance of 6 m
2. Yellowbank Slough; Illinois: Gallatin Co. -88.1192, 37.8367 at a distance of 1477 m
3. Goose Pond Scatters; Illinois: Gallatin Co. -88.1219, 37.8522 at a distance of 1747 m
4. Black Branch head; -88.1528, 37.8328 at a distance of 1768 m
5. Joes Slough; Illinois: Gallatin Co. -88.1583, 37.8378 at a distance of 2051 m
6. Crackle Ditch; Illinois: Gallatin Co. -88.1317, 37.8214 at a distance of 2149 m
7. Goose Pond; Illinois: Gallatin Co. -88.1183, 37.8569 at a distance of 2349 m
8. Cattail Slough; Illinois: Gallatin Co. -88.1281, 37.8658 at a distance of 2872 m
9. Running Slough; Illinois: Gallatin Co. -88.1014, 37.8403 at a distance of 2981 m
10. New Haven, Township of; Illinois: Gallatin Co. -88.0992, 37.8433 at a distance of 3190 m

The 7.5 minute series topographic maps for that area