Assessment of Vulnerability to Sea Level Rise and Recommended - PowerPoint PPT Presentation

Assessment of Vulnerability to Sea Level Rise and Recommended Mitigation Strategies for Pasquotank County Bobby Harris, Radha Patel, Neil Sullivan, Molly Fisher, and Cassy Karlsson Professor David Salvesen

• Vulnerability • Mitigation Strategies • Community Rating System (CRS)

Global Mean Sea Level Rise

Relative Sea Level Rise Projections (in feet) for Pasquotank County

Sea Level Rise Vulnerability for Pasquotank County from Climate Central Unit < 1 ft < 2 ft < 3 ft < 4 ft Property $ Million 51 139 270 394 value Population Count 1,644 3,188 6,082 10,351 Roads Miles 27 52 93 146 Land Acres 17,698 23,860 31,246 39,372

1 foot Sea Level Rise 2 feet Sea Level Rise

3 feet Sea Level Rise 4 feet Sea Level Rise

Southern Pasquotank County by 2100

Glen Cove by 2050 1 foot SLR

Glen Cove by ~2070 2 feet SLR

Glen Cove by ~2100 3 feet SLR

Bray’s Estates Flood Zones

Bray’s Estates by 2050

Bray’s Estates by ~ 2070

Bray’s Estates by 2100

Bray’s Estates by 2100

Elizabeth City

Elizabeth City

Increased Flooding By 2050: • 100-year flood event will occur every 5 years. • Half of county will be within 100- year floodplain

Mitigation

(1) Limit Development in Flood-Prone Areas • Increase lot size in new developments

Raise freeboard requirements

(2) Preserve Natural Buffers • Establish parks in flood prone areas

(3) Build Community Awareness • Create a Community Flood Awareness Forum

(3) Build Community Awareness • Create signage

4. Protect Critical Infrastructure Elevation of Knobbs Creek Road

Joining the Community Rating System

National Flood Insurance Program Annual Flood Premiums • Pasquotank County: $725,335 • Elizabeth City: $966,782 • Combined $1,692,117 • As of 2014, subsidies slowly being removed, predicted price increases

Community Rating System • Participating in CRS gives discounts to insurance premiums • Activities  Points  Discounts • CRS communities: Class 10  Class 1 • 81 communities in North Carolina have adopted the CRS • Prediction of Class 9 or Class 8 for Pasquotank

CRS Activities Community Rating System Rate Class Requirements and Discounts Rate Class SFHA* Discounts Credit Points Required 1 45% 4,500 + 2 40% 4,000 – 4,499 3 35% 3,500 – 3,999 4 30% 3,000 – 3,499 5 25% 2,500 – 2,999 6 20% 2,000 – 2,499 7 15% 1,500 – 1,999 8 10% 1,000 – 1,499 9 5% 500 - 999 10 0% 0 - 499 Categories: • Public Information • Mapping and Regulations • Flood Damage Reduction • Flood Preparedness

Class 9 Activity Recommendations Implemented Activities (Class 9) Activity # Estimated Points Morehead City Points Cost Indication (Free, Low, Med, High) 310 Elevation ~46-56 56 Already Implemented Certificates 320 Map Information ~60-140 140 Already Implemented Service 340 Hazard Disclosure ~10-15 10 Already Implemented 360 Flood Protection ~50 0 Already Implemented Assistance 440 Flood Data ~50-90 86 Already Implemented Maintenance 450 Storm-Water ~30-120 33 Already Implemented Management 630 Dam Safety ~58 58 Already Implemented No-Cost Points: ~304 – 529 383

Class 9 Recommendations (cont.) Recommended Activities (Class 9) Activity # Estimated Points Morehead City Points Cost Indication (Free, Low, Med, High) 330 Outreach Projects ~100-200 212 Low Cost 350 Flood Protection ~40-60 56 Low Cost Information 540 Drainage System ~100-170 170 Medium Cost Maintenance Total: ~544 – 959 821

Class 9 Annual Savings Elizabeth City: $48,339 Pasquotank County: $36,267 Combined: $84,706

Class 8 Recommended Activities Recommended Activities for Class 8 Certification Activity # Estimated Points Morehead City Points Cost Indication (Free, Low, Med, High) 410 Additional Flood ~10-60 11 Low Data 420 Open Space ~40-150 48 Medium Preservation 430 Higher Regulatory ~120-215 165 Medium Standards 510 Floodplain ~70-125 99 Medium Management Planning 610 Flood Warning ~40-140 60 Medium Program 530 Flood Protection ~60-160 0 High Total Class 8: ~340-850 383 Grand Total ~884-1809 1204

Class 8 Annual Savings Elizabeth City: $96,678 Pasquotank County: $84,606 Combined: $181,284

Acknowledgements • Shelley Cox • Julie Stamper • Christy Saunders • Rich Olson • Amy Durden • Wayne Harris • David Salvesen

Questions?

Thank You!