Drawing Louisiana's New Map Addressing Land Loss in Coastal Louisiana (2006) / Chapter Skim
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8 Findings and Recommendations
8 Findings and Recommendations
Pages 161-176
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8 Findings and Recommendations The Louisiana Coastal Area (LCA) , Louisiana -- Ecosystem Restoration Study (LCA Study)
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162 DRAWING LOUISIANA'S NEW MAP sea level rise and localized land loss "hot spots" occurring along growth faults, access canals, and navigation waterways. Some of the individual causative factors encompass both natural and anthropogenic elements.
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FINDINGS AND RECOMMENDATIONS 163 LCA Study would, obviously, require greater efforts to reduce land loss at much greater expense. These facts have to be broadly appreciated to avoid widespread disappointment with the LCA projects.
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Army Corps of Engineers (USACE) policy statements and recommended in past National Research Council reports, planning and implementation of water resources projects (including those involving environmental restoration)
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in the 1990s (U.S. Army Corps of Engineers, 2004a)
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166 DRAWING LOUISIANA'S NEW MAP dredged material could then be placed predominantly to the west where it would further nourish, maintain, and form barrier islands under the westward-directed natural dispersion. The underlying objective of these efforts should be to capture and utilize significant portions of both the fine and the coarse sediment loads of the Mississippi River.
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Program Management As discussed in Chapters 3, 4, and 5, effective management of the efforts proposed in the LCA Study will be a critical factor leading to the overall success of the restoration effort in Louisiana. Expanded efforts described in this report will place further burden on the management structure.
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168 DRAWING LOUISIANA'S NEW MAP Model Development and Application As discussed in Chapter 5, the LCA Study proposes the development of process-based models for prediction of coastal response as a central feature of current and future restoration efforts. Modeling will be a key component of the design, operation, and maintenance of the restoration and management of coastal Louisiana.
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Documented rates of worldwide sea level rise and regional subsidence clearly indicate that in the absence of adequate action, land loss in coastal Louisiana will continue. If, however, rates of land loss are indeed declining, the potential to more fully offset land loss may be greater.
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Army Corps of Engineers, 2004a)
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FINDINGS AND RECOMMENDATIONS 171 as implied by the statement of task, greater emphasis is to be placed on the national economic benefits of restoring and protecting coastal Louisiana, future planning efforts should incorporate meaningful measures of the economic significance of these projects to the nation consistent with procedures normally employed to determine the value of a project or a suite of projects for National Economic Development. As greater understanding is gained of the short- and long-term economic impacts of Katrina, a more meaningful effort to evaluate the national economic significance of protecting the natural and built environment in coastal Louisiana will be possible.
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172 DRAWING LOUISIANA'S NEW MAP of this scale with a series of small projects is likely to make little difference unless the projects are designed to maximize synergistic effects or are coupled with some larger-scale efforts. Small projects may be useful for learning how the system works and for developing the confidence necessary for larger-scale project selection.
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FINDINGS AND RECOMMENDATIONS 173 implementing the restoration efforts proposed would reduce this land loss by about 20 percent. Furthermore, actual land building will be experienced only in areas adjacent to the implemented projects.
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174 DRAWING LOUISIANA'S NEW MAP (1) affect significant sediment delivery to the system, such as abandonment of the Birdsfoot Delta; (2)
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FINDINGS AND RECOMMENDATIONS 175 where specific recommendations for change have been made in this report and only in conjunction with the development of a comprehensive plan. The Aftermath of Katrina and Rita As the State of Louisiana and the nation begin to recover from Katrina and Rita, efforts to restore wetlands in Louisiana will undoubtedly compete with reconstruction and levee maintenance or enhancement efforts.
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