The selected location is:

The elevation is 579 m ( 1900 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) = -100.1721, 45.3550; 579 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 Northeastern Great Plains (less typical) 45
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Nearby named places (in order by distance)

1. Old Zion Cemetery; South Dakota: Walworth Co. -100.1721, 45.3550 at a distance of 1 m
2. Pero Creek head; -100.1707, 45.3711 at a distance of 1792 m
3. Rieger Creek mouth; South Dakota: Walworth Co. -100.1671, 45.3264 at a distance of 3204 m
4. Albert Kulm Dam; South Dakota: Walworth Co. -100.1287, 45.3583 at a distance of 3419 m
5. Brown, Township of; South Dakota: Walworth Co. -100.1310, 45.3694 at a distance of 3595 m
6. Akaska; South Dakota: Walworth Co. -100.1207, 45.3325, ( 1768 ft ) at a distance of 4741 m
7. Akaska, Town of; South Dakota: Walworth Co. -100.1212, 45.3319 at a distance of 4744 m
8. River, Township of; South Dakota: Walworth Co. -100.2329, 45.3700 at a distance of 5047 m
9. Bowdle Beach Recreation Area; South Dakota: Walworth Co. -100.2573, 45.3767, ( 1620 ft ) at a distance of 7097 m
10. Smalley (historical); South Dakota: Walworth Co. -100.2271, 45.4083, ( 1900 ft ) at a distance of 7324 m

The 7.5 minute series topographic maps for that area