1. committed to our coast
Preliminary Assessment of Restoration Impacts in the Isles Dernieres, Terrebonne Parish, LA CPRA Board Meeting Baton Rouge, LA March 20, 2019
committed to our coast

2. Coastal Protection and Restoration Authority of Louisiana
Acknowledgements
Syed Khalil, CPRA
Mark Byrnes, Applied Coastal Research and Engineering
Nicholas Enwright, USGS
Shea Penland, UNO
Mike Miner, The Water Institute of the Gulf
Mark Kulp, UNO
Ioannis Georgio, UNO
TY1-Longshore Transport
Coastal Protection and Restoration Authority of Louisiana

3. Coastal Protection and Restoration Authority of Louisiana

4. Lobes of Mississippi River deltas

5. Evolution of Mississippi Deltaic Plain barrier islands (Penland et al

6. 20 August

7. Whiskey Island
11/9/2019

8. Sediment dredged from offshore rebuilt the beach from the Ship Channel to Holly Beach

9. June 2012
Shell Island

10. August 2013
Shell Island

11. East Island
11/9/2019

12. Profile Equilibration in First Year
Erosion
Gulf of Mexico
Accretion
Post Storm TY20
Coastal Protection and Restoration Authority of Louisiana

13. Initial Adjustments are Complete
Gulf of Mexico
Post Storm TY20
Coastal Protection and Restoration Authority of Louisiana

14. Barrier Island Evolution
Years Later
Future
Without
Project
Future
With Project
Gulf of Mexico
Post Storm TY20
Coastal Protection and Restoration Authority of Louisiana

16. Coastal Protection and Restoration Authority of Louisiana

22. 10.2 MCY

24. Courtesy of APTIM (Benedet and Pierro, IN PRESS)

25. Coastal Protection and Restoration Authority of Louisiana
Future Assessments
Land Changes
Habitat Changes
Shoreline Lengths
Tidal Pass Cross-Sections
Sediment Volumes
Elevation Changes
Shoreface Slope Changes
Cost Benefits
TY1-Longshore Transport
Coastal Protection and Restoration Authority of Louisiana

27. QUESTIONS?
$103,283, contract price after CO #5
724 days (650 original)
9,474,159 CY beach/dune fill
974,304 CY marsh fill
TE-0100 Cailliou Headlands (Whiskey Island) Construction Complete May 2018