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Regional Solutions: How a Resilient Great Marsh is our Number One Defense

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Regional Solutions: How a Resilient Great Marsh is our Number One Defense. Wayne Castonguay, Executive Director Ipswich River Watershed Association

Published in: Environment
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Regional Solutions: How a Resilient Great Marsh is our Number One Defense

  1. 1. Great Marsh Symposium November 9, 2017 A Resilient Great Marsh Is Our Number One Defense
  2. 2. Coastal Resiliency Planning Process
  3. 3. Climate Adaptation Strategies Climate Adaptation & Resilience Policy Natural Solutions Nature-Based & Hybrid Gray Infrastructure
  4. 4. !"#$%&'$"()&*+$(%$,&-#(.,.#/01&2,$/ -#0+33#/4$%.+/(
  5. 5. Wetlands Reduce Flooding! Coastal wetlands are estimated to have saved $625 million in flood damages during Hurricane Sandy. - COASTAL WETLANDS AND FLOOD DAMAGE REDUCTION Using Risk Industry-based Models to Assess Natural Defenses in the Northeastern USA
  6. 6. #1 Adaptation Strategy: Increase Natural Security ! Protect natural habitats ! Restore degraded natural habitats ! Replicate natural systems & cycles in developed areas
  7. 7. Great Marsh Natural Resource Partners
  8. 8. Natural Defenses BEACHES & DUNESSALT MARSHES RIVERS & FLOODPLAINS BIODIVERSITY
  9. 9. Natural Strategies DUNE RESTORATION INVASIVE SPECIES REMOVAL SALT MARSH RESTORATION RESTORE CONNECTIVITY
  10. 10. Natural and Nature-Based Strategies ! Restore connectivity of river and coastal systems ! Use living shorelines to stabilize shoreline edges ! Protect and enhance shellfish reefs and beds ! Protect and restore barrier beaches and dunes ! Beneficially reuse dredged material ! Restore submerged-aquatic vegetation ! Protect and restore salt marshes ! Facilitate marsh migration ! Enhance land conservation efforts ! Protect & enhance biodiversity
  11. 11. Great Marsh Barriers Assessment
  12. 12. Dune Restoration
  13. 13. !"#$%&#' ()*+,-./. Great Marsh Land Conservation
  14. 14. Policy Strategies LAND-USE REGS CLIMATE-SMART DEVELOPMENT WATER RESOURCES MGT. POLLUTION CONTROL
  15. 15. Land-use Planning and Policy ! Update municipal policies ! Prioritize low-impact development (LID) practices ! Revise local wetlands protection bylaws and regulations ! Move development away from the coast and wetlands ! Create “freeboard incentive” for buildings ! Use incentives (e.g. TDCs) to reduce risky development ! Institute comprehensive water resources management
  16. 16. Low-Impact/Climate-Smart Development & Retrofits
  17. 17. -#5.(#&6+0$,&71,$8( $/4&-#9:,$%.+/(
  18. 18. Great Marsh Major Nitrogen Sources 01
  19. 19. 888;9"#$%3$"()"#(.,.#/01;+"9
  20. 20. 2-&3&,%/.$435,)647"48,("#94 :;8&"$.$,3&,(<=&"'3 Questions? <$1/#&*$(%+/9:$1 >?.%:34@.,A4/.%3&/ B;'C4%-,D4@./,E"3./'-.$,)''&%4"34&# C%"'3&#7:"<F4;'C4%-/4@./G&/7

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