Visions for a Flood Resilient Waterfront: Examples from the Kingston Flooding Task Force

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libby-murphy
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In NYS, we're convening Municipal Waterfront Flooding Task Forces so community members can do a deep dive into their flood risks, vulnerability and adaptation options. The process includes a Cost Benefit Analysis of adaptation scenarios and culminates in a final report and recommendations. You can learn about our process in Kingston, NY here.

If you want to stay updated on our latest projects, events, and funding and job opportunities, please sign up for our Climate Resiliency Newsletter:
https://public.govdelivery.com/accounts/NYSDEC/subscriber/new?topic_id=NYSDEC_147
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  • 1. Visions for a Flood Resilient Waterfront Examples from the Kingston Flooding Task Force Libby Murphy Hudson River Estuary Program/Cornell WRI NYSFSMA Annual Conference March 27, 2014
  • 2. Outline • The Hudson River Estuary Program • Kingston Waterfront Flooding Task Force • What can you do? • Questions
  • 3. The Hudson River Estuary Program assists communities with climate resilience • Climate Smart Communities • Flooding Task Forces • Watershed Resiliency –Watershed planning –Green infrastructure –Assessing culverts for correct sizing –Assessing dams for removal or repair –Trees for Tribs (stream buffer restoration) • Biodiversity Resiliency
  • 4. Current situation
  • 5. Sea level rise Historic: • 15” in NY Harbor in the past 150 years Future: 100-yr coastal flood to 25-yr, by 2100 (SLR alone) •Enhanced storm surge •More severe storms
  • 6. December 2012: the Mayor appoints a Task Force
  • 7. TF uses a variety of tools to reach consensus: • Visioning of key themes • Participatory mapping • Selection of planning horizons • Mapping of vulnerability and risk • Climate Smart Resiliency Planning tool • Flood adaptation strategies and simulations • Cost Benefit Analysis
  • 8. Key themes • Waterfront history and “sense of place” •Economy and economic revitalization •Health and safety •Natural systems to reduce flood risk •Secure infrastructure •Kingston’s Climate Action Plan
  • 9. Participatory Mapping
  • 10. The Task Force chose projections for Kingston to plan for: Year Sea Level Rise Scenario 2060 2100 Low 20 inches 33 inches High 36 inches 68 inches
  • 11. Kingston piloted the Climate Smart Resiliency Planning tool for NYS DEC Community Plan Checklist Plans, Ordinances, and Codes Yes No Adoption Year Update Frequency Notes Municipal Master Plan X 1961 Kingston is currently working on a new comprehensive plan targeted to 2025. Timeline is not yet set. Multi-Hazard Mitigation Plan X 2009 5 years This plan is for Ulster County and is currently being updated and will be complete in 2014. The existing one implies that Kingston is not tidal. Floodplain Management Plan X There is flood hazard overlay district (2009) within city zoning ordinance, sec 405-26. Evacuation Plan X Ulster County has a detour evacuation route plan that mostly covers major highways. It is an annex to the county CEMP. Comprehensive Emergency Management Plan X 3 Years Kingston is currently updating this plan. Continuity of Operations Plan X
  • 12. Kingston has many strengths in terms of planning
  • 13. Three areas of opportunities for Kingston to incorporate flood-preparedness Outreach an collaboration Zoning, building codes and regulation Planning www.kingstoncac.org
  • 14. Scenario: damage from a 100-yr (1%) storm in 2013 with no sea level rise. Risk and vulnerability mapping Scenario: damage from a 100-yr (1%) storm in 2100 with high sea level rise.
  • 15. Worse case scenario Year 2100, With High Sea Level Rise and a 100-year Storm 1% Probability of Occurrence in Any Given Year Total Damage for this Event: $39.9 Million Damage to Wastewater Treatment Plant: $27.6 Million • Lost Value Due to Sea Level Rise • Lost Value Due to Sea Level Rise + Storm Surge Cumulative Expected Damages by 2100 With High Sea Level Rise = $126 Million
  • 16. General flood adaptation strategies • Fortify • Accommodate • Strategically Relocate
  • 17. Fortify Levee, New Orleans, LA Seawall, Beacon, NY
  • 18. Elevated structures with flood gates, Hamburg, Germany Accommodate Elevate building systems
  • 19. Steelhouse restaurant and Clearwater boathouse, Kingston, NY Local examples of accommodation
  • 20. Strategic Relocation Natural shoreline with gazebo, Esopus MeadowsStaten Island, NY
  • 21. Site scale: what NYC is recommending
  • 22. Regional scale: what NYC is recommending
  • 23. Simulations
  • 24. Kingston waterfront low tide E Strand in Kingston
  • 25. 4’ of Sea Level Rise Kingston waterfront Simulation: elevated sea level (4’) at low tide
  • 26. Example of Fortify Kingston waterfront Simulation: elevated sea level (low tide), armored protection
  • 27. Kingston waterfront Simulation: elevated sea level (low tide), vegetated revetment, floodproofed buildings Example of Accommodate
  • 28. Kingston waterfront Simulation: elevated sea level (low tide), strategic retreat Example of Strategic Relocation
  • 29. POTENTIAL ADAPTATION SOLUTIONS
  • 30. 100 Year Storm in 2060 Buildings Damaged by Storm Surge from this Single Event (Height of Bar indicates relative damage amount) Buildings Permanently Inundated due to Sea Level Rise by this Year, if No Action is Taken Extent of Flooding from this Event COAST: cost benefit tool
  • 31. BENEFIT COST ANALYSIS OF ADAPTATION STRATEGIES – KINGSTON Scenario B: WITH ELEVATION OF EAST STRAND STREET TO 11 FEET (NAVD 88) Scenario C: WITH ELEVATION OF BULKHEAD/WITH PATH TO 11 FEET (NAVD 88) Scenario D: PURCHASES OF ROLLING EASEMENTS, WITH TRANSFER OF TITLE TO CITY AT 2060 OR WHEN MHHW REACHES 6.0 FEET (NAVD 88) Low SLR High SLR Low SLR High SLR Low SLR High SLR 46,400,000 44,100,000 46,400,000 44,100,000 46,400,000 44,100,000 4,900,000 4,700,000 241,000 466,900 36,900,000 39,576,000 41,500,000 39,400,000 46,159,000 43,633,100 9,500,000 4,524,000 9,800,000 6,200,000 22,540,000 4.2 4.0 7.4 7.0 3.7 1.8 Cumulative Damage to East Strand Study Area With No Action1 Cumulative Damage with Adaptation Strategy in Place1 Avoided Damage (Row 1 – Row 2) or BENEFIT Estimated COST of Adaptation Strategy BENEFIT/COST Ratio (The higher the number above 1, the more favorable the ratio.) 1Discount Rate of 3.3% applied. 2Does not include purchase of easements at five city-owned properties, and sewage treatment plant remains unprotected.
  • 32. Final recommendations fall into 6 categories: • City operations, funding and decision-making • Resilient structures • Promotion of a waterfront economy and economic revitalization • Collaboration and public outreach • Emergency management • Site-based recommendations
  • 33. Some highlights from the final recommendations: • Ensure that zoning designations in the Kingston 2025 Comprehensive Plan consider increasing risk and vulnerability from flooding and sea-level rise. • Develop a Kingston Waterfront Long-term Resiliency Plan. • Ensure that all relevant City staff and elected and appointed officials are fully trained in and expected to incorporate impacts of flooding and sea-level rise into their daily work.
  • 34. Some highlights from the final recommendations: • Reduce stormwater, upland flooding and combined sewer overflows through green infrastructure and best stormwater management practices. • Evaluate the use of natural buffers and green shoreline infrastructure to reduce flood risk and erosion and conserve natural resource functions. • Develop a plan to mitigate both near- and long- term risk to the wastewater treatment facility.
  • 35. City Council unanimously adopts the final report and recommendations in December 2013
  • 36. Next Steps • Buy-in from community and municipal staff • Comprehensive plan, emergency management • Funding and financial, hazard mitigation $5M HREP funded task forces in Catskill, Piermont and Stony Point
  • 37. What can you do? See documentation of the entire process in Kingston: www.kingstoncac.org
  • 38. Get involved with NY’s Climate Smart Communities 116 in NYS
  • 39. What else can you do? Know your risks: • Sea level rise webviewer, Hudson River, by Scenic Hudson http://www.scenichudson.org/slr/mapper Know how to plan: • Climate Smart Resiliency Planning tool by DEC http://www.dec.ny.gov/docs/administration_pdf/csrptool.pdf • NYCPlanning Urban Waterfront Adaptive Strategies http://www.nyc.gov/html/dcp/html/sustainable_communities/sustain_com7.shtml • View our slides on flood adaptation strategies http://www.slideshare.net/hrepclimate Know the latest opportunities: • Sign up for our Climate Resiliency in the Hudson River Estuary Newsletter http://goo.gl/GYvVs2
  • 40. Questions? Thank you. Libby Murphy Hudson River Estuary Program (845) 256-3016 [email protected]
  • 41. NYS 2100 Commission Report (2012) NYS Sea Level Rise Task Force Report (2010) Responding to Climate Change in NYS / ClimAID (2011)
  • 42. What can municipalities do? •Green infrastructure to manage stormwater •§ 405-26. Flood Hazard Overlay District •FEMA Flood Insurance Rates •FEMA Community Rating System •Rolling Easements •Other Land Use Tools •Build community awareness and consensus •Evaluate Zoning and Code
  • 43. Planning for the future in Kingston • Kingston Comprehensive Master Plan • Local Waterfront Revitalization Program • Waterfront Development Implementation Plan • Stormwater Management Plan • Tidal Rondout Watershed Management Plan • Brownfield Opportunity Area and 70 acre GEIS • Kingston Waterfront Flooding Task Force • Hazard Mitigation strategies
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