Orthophoto of Coastal Restoration Site in Louisiana

First post to the community. Glad to be here…
The attached image was created in ArcGIS 10.8.2 using an orthophoto I created using WebODM, GCPEditor, and my DJI Mavic Air 2. (Yes, you CAN actually use a Mavic Air 2 for mapping…) The photo shows Timbalier Island under construction as we rebuilt it using dredged sediments from the Gulf of Mexico. All told, we placed over 2 million cubic yards of sand over an area just over a 1.5 miles long and 0.25 mile wide.

The other layers in the map are survey station lines and the full construction template/footprint. Final GSD for this particular image was 2.08 inches as reported by WebODM. Flight altitude was 250 ft AGL. Flight date was 6/1/2022.

Background imagery is just stock imagery served up by ESRI/ArcGIS Online.

Enjoy! More to come as we continue on with restoring the Louisiana coastline!

4 Likes

Zoomed in view of the area to the southeast (around STA 150+00 to STA 160+00)

2 Likes

Zoomed down to 1:500 to show sand fencing alignments after installation along the constructed dune

2 Likes

Equipment staging area and small conex boxes (affectionately known as the dump shacks). The dozers are D6’s.

2 Likes

Zoomed to 1:80 to show GCP. GCPs were surveyed in using a Trimble R8 RTK rover.

2 Likes

Survey shack and RTK Base shown with red vector symbol

2 Likes

These are great! Keep them coming.

1 Like

Yes, please keep us posted on this project.

1 Like

This project was finished nearly a month ago. We actually did 3 islands within the scope of the project with a 4th, smaller project added near the end. You can read about it here:

We were also restoring an island known as Isle West Grand Terre at the same time. WGT is the site of an historic fort named Fort Livingston. Here is a PDF that describes the project.

Our next project on the Louisiana coast is Chandeleur Island…14 miles long with a large seagrass bed on the leeward side of the island.

More to come…

3 Likes