The selected location is:

The elevation is 0 m ( 0 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) = -89.4007, 29.2674; 0 m

The state and county are Louisiana: Plaquemines Parish 22075
The HUC is East Central Louisiana Coastal 08090301; Place point in HUC
The Omernik ecoregion is Mississippi Alluvial Plain (less typical) 73
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Nearby named places (in order by distance)

1. Porpoise Bayou; Louisiana: Plaquemines Parish -89.4007, 29.2674 at a distance of 6 m
2. Spanish Pass; Louisiana: Plaquemines Parish -89.4184, 29.2619 at a distance of 1819 m
3. Yellow Cotton Bay; Louisiana: Plaquemines Parish -89.4170, 29.2866 at a distance of 2652 m
4. Chawee, Bayou; Louisiana: Plaquemines Parish -89.4025, 29.2385 at a distance of 3206 m
5. Dgs Heliport; Louisiana: Plaquemines Parish -89.3851, 29.2419 at a distance of 3208 m
6. Venice Oil Field; Louisiana: Plaquemines Parish -89.4087, 29.2391 at a distance of 3228 m
7. Tante Phine, Pass head; -89.3754, 29.2483 at a distance of 3247 m
8. Little Channel, Bayou; Louisiana: Plaquemines Parish -89.4348, 29.2624 at a distance of 3355 m
9. Colum-Bel Cut; Louisiana: Plaquemines Parish -89.4345, 29.2746 at a distance of 3376 m
10. Era Helicopters Venice Base Heliport; Louisiana: Plaquemines Parish -89.3679, 29.2874 at a distance of 3888 m

The 7.5 minute series topographic maps for that area