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Cameron Meadows Marsh Creation and Terracing (CS-66)

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. 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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Cameron Meadows Marsh Creation and Terracing (CS-66)

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  1. 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

  2. Vicinity Map Location: • Calcasieu – Sabine Basin • Cameron Parish • 5 mi. NE of Johnson’s Bayou • 5 mi. N of the Gulf of Mexico Coastal Protection and Restoration Authority of Louisiana

  3. ProjectBackground • 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

  4. Project Map Coastal Protection and Restoration Authority of Louisiana

  5. Causes • Rapid fluid and gas extraction • Hurricanes • Saltwater intrusion • Subsidence • Hydrologic alterations Coastal Protection and Restoration Authority of Louisiana

  6. Marsh Creation • 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 Coastal Protection and Restoration Authority of Louisiana

  7. Terracing • Construct 35,000 LF of earthen terraces • +2.5 ft. NAVD 88 • 15 ft. crown width • Planted Coastal Protection and Restoration Authority of Louisiana

  8. Re-establish Hydrologic Connectivity • Clean out 30,000 LF of canals • Drainage canals filled in with debris due to hurricanes B1 Canal Coastal Protection and Restoration Authority of Louisiana

  9. ProjectFuture • 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 Coastal Protection and Restoration Authority of Louisiana

  10. QUESTIONS Coastal Protection and Restoration Authority of Louisiana

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