The selected location is:

The elevation is 15 m ( 49 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) = -81.1076, 28.6336; 15 m

The state and county are Florida: Seminole County 12117
The HUC is Upper St. Johns 03080101; Place point in HUC
The Omernik ecoregion is Southern Central Plain (more typical) 75
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Nearby named places (in order by distance)

1. Mills Creek head; -81.1076, 28.6336 at a distance of 3 m
2. Mill Lake; Florida: Seminole Co. -81.1137, 28.6353, ( 42 ft ) at a distance of 624 m
3. Mills Lake; Florida: Seminole Co. -81.1137, 28.6356, ( 42 ft ) at a distance of 634 m
4. Chuluota Cemetery; Florida: Seminole Co. -81.1095, 28.6281 at a distance of 640 m
5. Mills Branch mouth; Florida: Seminole Co. -81.1220, 28.6314 at a distance of 1428 m
6. Silcox Branch mouth; Florida: Seminole Co. -81.0909, 28.6309 at a distance of 1661 m
7. Chuluota; Florida: Seminole Co. -81.1234, 28.6420, ( 58 ft ) at a distance of 1801 m
8. Chuluota First Assembly of God; Florida: Seminole Co. -81.1262, 28.6295, ( 55 ft ) at a distance of 1875 m
9. Gore, Lake; Florida: Seminole Co. -81.1042, 28.6509, ( 41 ft ) at a distance of 1943 m
10. Catherine, Lake; Florida: Seminole Co. -81.1267, 28.6420, ( 53 ft ) at a distance of 2085 m

The 7.5 minute series topographic maps for that area