"Policy Options for Managing Waterfront Vulnerability to Flooding" by Betsy Blair

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"Policy Options for Managing Waterfront Vulnerability to Flooding" presentation by Betsy Blair, NYSDEC Hudson River National Estuarine Research Reserve, from the 4/13/12 Columbia-Greene Revitalizing Hudson Riverfronts forum .

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"Policy Options for Managing Waterfront Vulnerability to Flooding" by Betsy Blair

  1. 1. Managing  Waterfront  Vulnerability   to  Flooding:     How  can  we  adapt?   Betsy  Blair,  NYSDEC  Marine  Habitat  Protec9on/Hudson  River  NERR       Kris9n  Marcell,  Hudson  River  Estuary  Program/Cornell  WRI   NYS Department of Environmental Conservation
  2. 2. Waterfront  revitaliza4on  vs.   Waterfront  vulnerability   NYS Department of Environmental Conservation
  3. 3. Can we build smarter?•  Define vulnerable areas (now and future)•  Design waterfronts to provide –  Economic benefits –  Environmental benefits –  Safety NYS Department of Environmental Conservation
  4. 4. What are our vulnerabilities now and into the future? WhatWhat is the naturallifespan of assets doinfrastructure? we want to conserve? NYS Department of Environmental Conservation
  5. 5. Considerations at the site level•  Economic •  Social•  Visual •  Political•  Environmental •  Funding/Administration•  Technical NYS Department of Environmental Conservation
  6. 6. Potential Strategies•  Protection: armoring or adding sand to the shoreline•  Accommodation: elevation of land, structures or critical systems; designing to flood•  Strategic Relocation: keeping or moving structures out of harm’s way NYS Department of Environmental Conservation
  7. 7. Protection: Armoring and beach nourishment NYS Department of Environmental Conservation
  8. 8. For good reason InfrastructureOil terminals NYS Department of Environmental Conservation Cultural landmarks
  9. 9. Can we do better? Don’t do this if you don’t have to! NYS Department of Environmental Conservation
  10. 10. 10 Steps to better shore zones•  Preserve physical •  Tread lightly diversity •  Don’t make dead•  Resist tidiness ends•  Don’t squeeze the •  Don’t make it so zone hard•  Prevent pollution •  Give shores room to•  Reduce wave move damage •  Be careful about building NYS Department of Environmental Conservation
  11. 11. Scenic Hudson’s Esopus Meadows Preserve NYS Department of Environmental Conservation
  12. 12. Coxsackie Boat Launch Demonstration Site Eroding  Shoreline   NYS Department of Environmental Conservation
  13. 13. Dept of Urban Studies and Planning,School of Architecture + Planning at MIThttp://bronx.mit.edu/meet-your-waterfront-plan“…the gabions are arranged in anundulating pattern along theriparian edge to disperse wavemotion and slow water speeds.” NYS Department of Environmental Conservation
  14. 14. Accommodation: Elevating or designing to flood NYS Department of Environmental Conservation
  15. 15. Elevated structures with flood gates, Hamburg, GermanyWave attenuation,Brooklyn Bridge Park NYS Department of Environmental Conservation
  16. 16. Allow Room for Rivers Village of Tarrytown •  Shoreline “eco-corridor” with swales and native grasses •  www.scenichudson.org NYS Department of Environmental Conservation
  17. 17. Strategic Relocation: Keeping or moving structures out of harm’s way NYS Department of Environmental Conservation
  18. 18. Over the long term in many areas greenways and parks may be better uses of the shore than buildings.NYS Department of Environmental Conservation
  19. 19. Iona Island NYS Department of Environmental Conservation
  20. 20. Limit development in highest risk areasTown of Pleasant Valley –  Floodplain Protection: Zoning code limits uses in 100 yr floodplain to uses minimally affected by high water Dobbs Ferry –  http://pleasantvalley- ny.gov/ NYS Department of Environmental Conservation Saugerties
  21. 21. Don’t drown wetlands!Town of East Hampton –  Examined sea level rise and storms in comprehensive plan –  Studied changing wetland boundaries –  Prohibits building of bulkheads that would block wetland movement. –  150’ setback and no build zones in high hazard floodplains –  http://www.nyswaterfronts.com/LWRP/Town%20of %20East%20Hampton/default/ Town_of_East_Hampton_LWRP.htm NYS Department of Environmental Conservation
  22. 22. City of Hudson riverfront Present day, low tideNYS Department of Environmental Conservation
  23. 23. City of Hudson riverfrontSimulation: Inundation -- high tide with 4 feet ofsea level rise NYS Department of Environmental Conservation
  24. 24. City of Hudson riverfrontSimulation: Armored protectionat high tide with 4 feet of sealevel rise NYS Department of Environmental Conservation
  25. 25. NYS Department of Environmental Conservation
  26. 26. City of Kingston waterfrontSimulation: Armored protection with elevated sea level (lowtide). NYS Department of Environmental Conservation
  27. 27. City of Kingston waterfrontSimulation: Accommodation to elevated sea level(low tide), vegetated revetment, flood-proofedbuildings NYS Department of Environmental Conservation
  28. 28. City of Kingston waterfrontSimulation: Strategic retreat with elevated sealevel (low tide) NYS Department of Environmental Conservation
  29. 29. Questions?Betsy BlairNYS DEC Hudson River NERRPhone: (845) 889-4745 x113Email: bablair@gw.dec.state.ny.us NYS Department of Environmental Conservation

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