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Cameron Meadows Marsh Creation and Terracing(CS-66)Julia Wall, E.I.Engineering DivisionMay 6, 2014
committed to our coastcommitted to our coast
Coastal Protection and Restoration Authority of Louisiana
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Coastal Protection and Restoration Authority of Louisiana
VICINITY MAPLocation: • Calcasieu –
Sabine Basin• Cameron
Parish• 5 mi. NE of
Johnson’s Bayou
• 5 mi. N of the Gulf of Mexico
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• CWPPRA PPL 22• Federal Sponsor: NMFS• Avg. water elevation: 1.5 feet• Landloss rate: -0.94%/yr. (USGS, 1984-2010 )
• Create/restore over 350 acres of coastal marsh habitat• Create approximately 35,000 LF of earthen terraces• Re-establish hydrologic connectivity
Coastal Protection and Restoration Authority of Louisiana
PROJECT BACKGROUND
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Coastal Protection and Restoration Authority of Louisiana
PROJECT MAP
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Coastal Protection and Restoration Authority of Louisiana
CAUSES
• Rapid fluid and gas extraction
• Hurricanes• Saltwater
intrusion• Subsidence• Hydrologic
alterations
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MARSH CREATION
Coastal Protection and Restoration Authority of Louisiana
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• Restore 352 acres• Borrow from the
Gulf of Mexico• Pump via
pipeline, ~6 mi.• Target marsh
elevation +1.5 ft.• 20,000 ft.
containment dike• Planted
8.222 ft. shoreline
5,191 ft. shoreline
15,300 ft. shoreline
7,920 ft. subline
TERRACING
Coastal Protection and Restoration Authority of Louisiana
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• Construct 35,000 LF of earthen terraces
• +2.5 ft. NAVD 88
• 15 ft. crown width
• Planted
RE-ESTABLISH HYDROLOGIC
CONNECTIVITY
Coastal Protection and Restoration Authority of Louisiana
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• Clean out 30,000 LF of canals
• Drainage canals filled in with debris due to hurricanes
B1 Canal
PROJECT FUTURE
Coastal Protection and Restoration Authority of Louisiana
• Engineering and Design: 2014-2015• Hydrodynamic modeling• Topographic, bathymetric, and magnetometer survey• Geotechnical investigation• Offshore borrow site investigation
• Compete for CWPRRA Phase II Funding: December 2015
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Coastal Protection and Restoration Authority of Louisiana
QUESTIONS
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