The selected location is:

The elevation is 549 m ( 1801 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) = -100.1837, 45.2933; 549 m

The state and county are South Dakota: Walworth County 46129
The HUC is Lower Lake Oahe 10130105; Place point in HUC
The Omernik ecoregion is Northwestern Great Plains (less typical) 43
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Nearby named places (in order by distance)

1. Calvin Ballensky Dam; South Dakota: Walworth Co. -100.1837, 45.2933 at a distance of 1 m
2. Rieger Creek mouth; South Dakota: Walworth Co. -100.1671, 45.3264 at a distance of 3901 m
3. Scranton, Township of; South Dakota: Walworth Co. -100.2332, 45.2825 at a distance of 4065 m
4. Tom Hauk Number 1 Dam; South Dakota: Walworth Co. -100.2354, 45.3033 at a distance of 4205 m
5. Liberty, Township of; South Dakota: Walworth Co. -100.1298, 45.2825 at a distance of 4395 m
6. Le Beau, Township of; South Dakota: Walworth Co. -100.2523, 45.3119 at a distance of 5764 m
7. A Holzwarth Dam; South Dakota: Potter Co. -100.2021, 45.2383 at a distance of 6282 m
8. Jacob Goetz Dam; South Dakota: Walworth Co. -100.1121, 45.2667 at a distance of 6348 m
9. Akaska, Town of; South Dakota: Walworth Co. -100.1212, 45.3319 at a distance of 6513 m
10. Akaska; South Dakota: Walworth Co. -100.1207, 45.3325, ( 1768 ft ) at a distance of 6586 m

The 7.5 minute series topographic maps for that area