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Non-Structural Surge Mitigation Concepts
Presented by:
Lynn Scarlett Managing Director for
Public Policy
The Nature Conservancy
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2
www.boston.com/bigpicture/2008/09/ Ike - 2008
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3
Rollover Pass and Gilchrist
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The Context
• 16 percent of near-shore US coastline is classified as high-hazard
• These areas home to:
– 1.3 million people – $300 billion in residential property
• 23 of 25 most populous US counties are along coasts Arkema, et al., “Coastal habitats shield people and property from sea-level rise and storms,” Nature
Climate Change, 2013
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Figure from Arkema, et al. 2013, Coastal habitats shield people and property from sea-level rise and storms, Nature Climate Change, 14 July, 2013
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Natural Assets and Coastal Protection
9 Types of Coastal Habitats Can Reduce Risks – Coastal forests – Coral reefs – Oyster reefs – Sea grass beds – Emergent marsh – Kelp forests – Low and High Dunes – Intertidal aquatic vegetation
Arkema, et al., Nature Climate Change, 2013
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Dune Protection: Rockaway Peninsula
With Dune—56th Street (Before)
56th Street (After)
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Dune Protection: Rockaway Peninsula
Without Dune-94th Street (Before)
Without Dune (After)
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ARRA & NOAA Supported TNC to build 1.5 miles of oyster reef--Alabama
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Oyster Reef Restoration Benefits
Two oyster reef projects—Mobile, Alabama
– 51-90% reduction in wave height
– 76-99% reduction in wave energy
– Enhanced fisheries Tom Kruger, TNC, “Dollars and Sense: Economic Benefits and Impacts from two Oyster Reef Restoration Projects in the Northern Gulf of Mexico,” May 2012.