Coastal Vulnerability Assessment and Adaptation Plan CITY OF CLEARWATER

Transcription

1 Coastal Vulnerability Assessment and Adaptation Plan 1

2 Background Vulnerability Assessment Adaptation Plan Peril of Flood Grant 2

3 Background SEA LEVEL RISE ADAPTATION PROJECT This publication was funded in part, through a grant agreement from the Florida Department of Environmental Protection, Florida Coastal Management Program, by a grant provided by the Office for Coastal Management under the Coastal Zone Management Act of 1972, as amended, National Oceanic and Atmospheric Administration Award No. NA15NOS The views, statements, findings, conclusions and recommendations expressed herein are those of the author(s) and do not necessarily reflect the views of the State of Florida, NOAA or any of their sub-agencies. 3

4 DEO PILOT STUDY Background Three Communities Selected by DEO in September 2015 Task One: Coastal Vulnerability Assessment Task Two: Adaptation Plan DEO Guidebook For Communities 4

5 Vulnerability Assessment TASK ONE Current and Future Condition Scenarios Hazard Data Development Overlay Onto Natural/Built Assets Summary of Impacts Completed by Dewberry 5

6 SCENARIOS Vulnerability Assessment Nuisance Flooding, 100-Year and 500-Year Storm Events 0 ft (Baseline), 1 ft, 2 ft and 3ft of SLR 6

7 Vulnerability Assessment 7

8 IMPACTS Vulnerability Assessment 8

9 Vulnerability Assessment 9

10 Vulnerability Assessment IMPACTS ROAD NETWORK Most Vulnerable to Nuisance Flooding Bridges Reduced Passability Nuisance Flooding + 2 ft SLR Storm Events + 1 ft SLR 10

11 Vulnerability Assessment 11

12 IMPACTS - BUILDINGS Vulnerability Assessment Building Footprints that Intersect with Flooding Layers Considered Impacted Two Fire Stations; Two Water Reclamation Facilities 12

13 Vulnerability Assessment 13

14 IMPACTS SHORELINE Expecting Shoreline Stability, or Slight Growth, on Clearwater Beach Expecting Shoreline Erosion on Sand Key Vulnerability Assessment 14

15 TASK TWO Adaptation Plan Utilizes Vulnerability Assessment Findings Provides Adaptation Options/Strategies Identifies Potential Legal Issues Prepared by the Sabin Center for Climate Change Law at Columbia Law School & St. Thomas School of Law 15

16 Adaptation Plan RECOMMENDATIONS Stormwater / Wastewater Management Flood Insurance & Freeboard Coastal Management & Development Roads & Bridges Disaster Recovery 16

17 STORMWATER / WASTEWATER Adaptation Plan Explore Land Acquisitions for Floodplain Restoration Evaluate Costs/Benefits of Green Infrastructure or LID Examine Options for Hardening Vulnerable Wastewater Reclamation Facilities 17

18 Adaptation Plan FLOOD INSURANCE / FREEBOARD Impose Freeboard Requirements Consider Imposing in Areas Expected to Become Vulnerable Explore Vulnerable Property Buyouts Revise Local Criteria for Substantial Damage & Substantial Improvement 18

19 COASTAL MANAGEMENT Adaptation Plan Condition Permits on SLR / Flooding Analysis Inventory All Sea Walls & Assess Expected Useful Life Require Disclosure of Expected SLR- Related Flooding Impacts 19

20 ROADS & BRIDGES Adaptation Plan Consider Authorizing Reduced Maintenance of Roads/Bridges Under Particular Environmental & Budgetary Circumstances 20

21 DISASTER RECOVERY Impose Restrictions on Post-Disaster Rebuilding Adaptation Plan Condition Permit to Rebuild on Demolition of Sea Walls/Hard Armoring Condition Permit to Rebuild on Covenant to Remove/Abandon Structures 21

22 Adaptation Plan NEXT STEPS DEO Reviewing Final Draft Present Recommendations to City Council DEO Will Use all Three Communities Reports to Create a Guidebook 22

23 Peril of Flood Grant $20,000 Technical Assistance Grant (Jan 2017) Examine Comprehensive Plan & how to Address Peril of Flood Requirements (SB1094) HDR Consulting 23

24 Peril of Flood Grant Created a Flood Risk Area for a Refined Analysis Used Era of Building Construction to Analyze Vulnerabilities FRA is the Coastal Storm Area Year Storm Event + 2 ft SLR 24

25 Deliverable 1: Evaluated Flood Risk Susceptibility Peril of Flood Grant Evaluated Existing Comprehensive Plan Policies Deliverable 2: Review of Potential Strategies Comprehensive Plan Amendments Community Development Board (June 20) 25

26 Questions Kyle Brotherton