The selected location is:

The elevation is 548 m ( 1799 ft )
The gradient is: 6.7 percent
The aspect direction is: 47.8 degrees or NE
The local roughness is: 3.0 or average
The location as decimal degrees (X,Y;Z) = -100.3304, 45.2855; 548 m

The state and county are South Dakota: Dewey County 46041
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. Ascension Church (historical); South Dakota: Dewey Co. -100.3304, 45.2856 at a distance of 10 m
2. Le Beau (historical); South Dakota: Walworth Co. -100.3004, 45.3056 at a distance of 3243 m
3. No Mouth Creek mouth; South Dakota: Dewey Co. -100.3476, 45.3222 at a distance of 4295 m
4. Swan Creek mouth; South Dakota: Walworth Co. -100.2935, 45.3153 at a distance of 4397 m
5. Fielder Creek mouth; South Dakota: Dewey Co. -100.2815, 45.2647 at a distance of 4479 m
6. Fielder Creek head; -100.3568, 45.2492 at a distance of 4537 m
7. East Fork No Mouth Creek mouth; South Dakota: Dewey Co. -100.3876, 45.2989 at a distance of 4728 m
8. No Mouth Creek head; -100.3879, 45.2989 at a distance of 4750 m
9. West Fork No Mouth Creek mouth; South Dakota: Dewey Co. -100.3879, 45.2989 at a distance of 4750 m
10. Scranton (historical); South Dakota: Walworth Co. -100.2715, 45.2750 at a distance of 4765 m

The 7.5 minute series topographic maps for that area