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Lost Lake Marsh Creation and Hydrologic Restoration (TE-72)

Lost Lake Marsh Creation and Hydrologic Restoration (TE-72). Russ Joffrion, P.E. Engineering Division May 6, 2014. committed to our coast. committed to our coast. Project Background. CWPPRA PPL 19 Create/Restore over 400 acres of intertidal marsh

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Lost Lake Marsh Creation and Hydrologic Restoration (TE-72)

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  1. Lost Lake Marsh Creation and Hydrologic Restoration (TE-72) Russ Joffrion, P.E. Engineering Division May 6, 2014 committed to our coast committed to our coast

  2. ProjectBackground • CWPPRA PPL 19 • Create/Restore over 400 acres of intertidal marsh • Create approximately 30,000 LF of earthen terraces • Replace 4 fixed crest weirs and 1 earthen plug with variable crest weirs • Engineering and Design: November 2012 • Phase 2 Funding: January 2013 • Anticipated Bid Advertisement: Fall 2014 Coastal Protection and Restoration Authority of Louisiana

  3. ProjectVicinity Map Coastal Protection and Restoration Authority of Louisiana

  4. Project Layout Coastal Protection and Restoration Authority of Louisiana

  5. Project Layout Coastal Protection and Restoration Authority of Louisiana

  6. Marsh Creation Fill Areas and Typical Section Coastal Protection and Restoration Authority of Louisiana

  7. Marsh Nourishment Fill Area and Typical Section Coastal Protection and Restoration Authority of Louisiana

  8. Earthen Terrace Layout And Typical Section Coastal Protection and Restoration Authority of Louisiana

  9. Variable Crest Weir Typical Section Coastal Protection and Restoration Authority of Louisiana

  10. Summary of Estimated Quantities • Marsh Fill: 3.3M CY (Cut) • Marsh Nourishment: 120K CY (Cut) • Shoreline Restoration: 4,000 LF • Containment Dikes: 50,700 LF • Earthen Terraces: 30,000 LF • 5Water ControlStructures • Channel Excavation: 1,500 CY • Treated Timber Piles: 9,000 LF • Steel Sheet Pile: 17,000 SF • Rip Rap (55 lb): 1,400 CY Coastal Protection and Restoration Authority of Louisiana

  11. QUESTIONS Coastal Protection and Restoration Authority of Louisiana

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