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) = -100.4771, 44.5458; 494 m

The state and county are South Dakota: Hughes County 46065
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. Spring Creek Recreation Area; South Dakota: Hughes Co. -100.4771, 44.5458 at a distance of 3 m
2. Cow Creek mouth; South Dakota: Hughes Co. -100.4579, 44.5600 at a distance of 2193 m
3. Fielder Post Office (historical); South Dakota: Hughes Co. -100.5057, 44.5469 at a distance of 2278 m
4. Cow Creek Recreation Area; South Dakota: Sully Co. -100.4971, 44.5617 at a distance of 2376 m
5. Spring Creek mouth; South Dakota: Hughes Co. -100.4518, 44.5292 at a distance of 2729 m
6. Oko Bojou Islands (historical); South Dakota: Hughes Co. -100.5129, 44.5417 at a distance of 2883 m
7. Okobojo Recreation Area; South Dakota: Sully Co. -100.5076, 44.5686 at a distance of 3506 m
8. Fielder Bottom (historical); South Dakota: Hughes Co. -100.5129, 44.5222 at a distance of 3872 m
9. Okobojo Creek mouth; South Dakota: Sully Co. -100.5176, 44.5692 at a distance of 4137 m
10. Al Reddin Dam; South Dakota: Hughes Co. -100.4371, 44.5183 at a distance of 4411 m

The 7.5 minute series topographic maps for that area