The selected location is:

The elevation is 494 m ( 1621 ft )
The gradient is: 1.9 percent
The aspect direction is: 90.0 degrees or E
The local roughness is: 8.9 or average
The location as decimal degrees (X,Y;Z) = -100.5179, 44.5833; 494 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 Northwestern Great Plains (less typical) 43
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Nearby named places (in order by distance)

1. Lewellyn Park, Township of; South Dakota: Sully Co. -100.5179, 44.5833 at a distance of 3 m
2. Plum Creek mouth; South Dakota: Sully Co. -100.5296, 44.5908 at a distance of 1248 m
3. Okobojo Creek mouth; South Dakota: Sully Co. -100.5176, 44.5692 at a distance of 1569 m
4. Okobojo Recreation Area; South Dakota: Sully Co. -100.5076, 44.5686 at a distance of 1828 m
5. Dry Creek mouth; South Dakota: Sully Co. -100.5537, 44.5839 at a distance of 2845 m
6. Sonnenschein Number 2 Dam; South Dakota: Stanley Co. -100.5537, 44.5883 at a distance of 2898 m
7. Cow Creek Recreation Area; South Dakota: Sully Co. -100.4971, 44.5617 at a distance of 2915 m
8. Dry Creek head; -100.5521, 44.5967 at a distance of 3097 m
9. Lower Sully Landing (historical); South Dakota: Sully Co. -100.5515, 44.5569 at a distance of 3969 m
10. Fielder Post Office (historical); South Dakota: Hughes Co. -100.5057, 44.5469 at a distance of 4161 m

The 7.5 minute series topographic maps for that area