Cameron Meadows Marsh Creation and Terracing...
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Cameron Meadows Marsh Creation and Terracing (CS-66) Julia Wall, E.I. Engineering Division May 6, 2014 committed to our coast committed to our coast Coastal Protection and Restoration Authority of Louisiana 1
Transcript of Cameron Meadows Marsh Creation and Terracing...
Cameron Meadows Marsh
Creation and Terracing
(CS-66)
Julia Wall, E.I.
Engineering Division
May 6, 2014
committed to our coast committed to our coast
Coastal Protection and Restoration
Authority of Louisiana 1
Coastal Protection and Restoration Authority of
Louisiana
VICINITY MAP Location:
• 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
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Louisiana 6
• 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
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Louisiana 7
• Construct 35,000 LF of earthen terraces
• +2.5 ft. NAVD 88
• 15 ft. crown width
• Planted
RE-ESTABLISH HYDROLOGIC
CONNECTIVITY
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Louisiana 8
• 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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