The selected location is:

The elevation is 494 m ( 1621 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) = -100.6815, 44.7522; 494 m

The state and county are South Dakota: Stanley County 46117
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. Little Bend; South Dakota: Sully Co. -100.6815, 44.7522, ( 1608 ft ) at a distance of 2 m
2. Little Bend (historical); South Dakota: Sully Co. -100.6654, 44.7500, ( 1460 ft ) at a distance of 1297 m
3. Sand Creek mouth; South Dakota: Stanley Co. -100.6737, 44.7336 at a distance of 2159 m
4. Cheyenne River mouth; Wyoming: Niobrara Co. -100.7004, 44.7667 at a distance of 2198 m
5. Walter Thompson Dam; South Dakota: Stanley Co. -100.7004, 44.7317 at a distance of 2728 m
6. Sand Creek head; -100.7137, 44.7372 at a distance of 3049 m
7. Mission Creek mouth; South Dakota: Stanley Co. -100.6871, 44.7222 at a distance of 3366 m
8. Cheyenne River mouth; South Dakota: Dewey Co. -100.7176, 44.7708 at a distance of 3528 m
9. Little Bend Post Office (historical); South Dakota: Sully Co. -100.7115, 44.7772 at a distance of 3654 m
10. Little Bend, Township of; South Dakota: Sully Co. -100.6812, 44.7856 at a distance of 3709 m

The 7.5 minute series topographic maps for that area