The selected location is:

The elevation is 550 m ( 1804 ft )
The gradient is: 1.9 percent
The aspect direction is: 104.7 degrees or E
The local roughness is: 1.0 or average
The location as decimal degrees (X,Y;Z) = -100.2837, 44.8828; 550 m

The state and county are South Dakota: Sully County 46119
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. Percilla (historical); South Dakota: Sully Co. -100.2837, 44.8828, ( 1815 ft ) at a distance of 2 m
2. Vivian, Township of; South Dakota: Lyman Co. -100.3060, 44.8906 at a distance of 1964 m
3. Henry Siebrasse Dam; South Dakota: Potter Co. -100.2921, 44.9100 at a distance of 3093 m
4. Troy Lake; South Dakota: Sully Co. -100.3248, 44.8625 at a distance of 3956 m
5. Moore (historical); South Dakota: Lyman Co. -100.2448, 44.9203, ( 1870 ft ) at a distance of 5176 m
6. Troy School; South Dakota: Sully Co. -100.3043, 44.8386, ( 1854 ft ) at a distance of 5177 m
7. Laurel Post Office (historical); South Dakota: Sully Co. -100.3129, 44.8389, ( 1839 ft ) at a distance of 5399 m
8. Sutton Bay Recreation Area; South Dakota: Sully Co. -100.3557, 44.8803 at a distance of 5697 m
9. Spring Draw mouth; South Dakota: Sully Co. -100.3576, 44.8950 at a distance of 5994 m
10. Artichoke Creek mouth; South Dakota: Sully Co. -100.3621, 44.8861 at a distance of 6206 m

The 7.5 minute series topographic maps for that area