coastal property damage mitigation risk assessment geol 4093
TRANSCRIPT
![Page 1: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/1.jpg)
Coastal Property Damage Mitigation
Risk Assessment
GEOL 4093
![Page 2: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/2.jpg)
Mitigation
• Engineering– Strengthen or move buildings– Armor the coast
• Land Use Planning– Limit or reduce development density– Can help implement new techniques such as
clustered housing– Easiest with new developments
![Page 3: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/3.jpg)
Responses to an Eroding Shoreline
• Hard Stabilization– Seawalls, groins, breakwaters, etc.
• Soft Stabilization– Beach replenishment, dune building
• Relocation or retreat– Move back from eroding shoreline
![Page 4: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/4.jpg)
Hard Stabilization (Seawalls, etc.)
• Advantages– Most dependable way to save beachfront
property
• Disadvantages– Degrades the recreational beach– Reduces beach access– Costly– unsightly
![Page 5: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/5.jpg)
![Page 6: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/6.jpg)
New Jerseyization
![Page 7: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/7.jpg)
![Page 8: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/8.jpg)
Modes of Beach Destruction by Seawalls
• Placement Loss– Seawall is built on the recreational beach
• Passive Loss– Beach continues to retreat and narrows in front
of the seawall
• Active Loss– Seawall directly causes erosion
![Page 9: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/9.jpg)
![Page 10: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/10.jpg)
Metropolitan San Juan Dry Beach Widths
![Page 11: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/11.jpg)
![Page 12: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/12.jpg)
![Page 13: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/13.jpg)
![Page 14: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/14.jpg)
![Page 15: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/15.jpg)
![Page 16: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/16.jpg)
![Page 17: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/17.jpg)
![Page 18: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/18.jpg)
![Page 19: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/19.jpg)
Soft Stabilization (Beach Nourishment)
• Advantages– Widens the beach– Protects buildings while beach is in place
• Disadvantages– Temporary– Costly– Unknown environmental effects
![Page 20: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/20.jpg)
![Page 21: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/21.jpg)
![Page 22: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/22.jpg)
![Page 23: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/23.jpg)
![Page 24: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/24.jpg)
![Page 25: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/25.jpg)
![Page 26: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/26.jpg)
![Page 27: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/27.jpg)
Relocation or Retreat
• Advantages– Responds to sea-level rise
– Preserves the beach
– Saves shoreline stabilization costs
– Preserves builidings
• Disadvantages– Politically difficult
– Potentially costly
– Loss of land
![Page 28: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/28.jpg)
![Page 29: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/29.jpg)
![Page 30: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/30.jpg)
![Page 31: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/31.jpg)
![Page 32: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/32.jpg)
![Page 33: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/33.jpg)
![Page 34: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/34.jpg)
![Page 35: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/35.jpg)
![Page 36: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/36.jpg)
![Page 37: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/37.jpg)
Mitigation Options
• Hard Stabilization
• Soft Stabilization
• Vegetation
• Development and infrastructure
• Zoning and land use planning
![Page 38: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/38.jpg)
![Page 39: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/39.jpg)
![Page 40: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/40.jpg)
![Page 41: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/41.jpg)
![Page 42: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/42.jpg)
![Page 43: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/43.jpg)
![Page 44: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/44.jpg)
![Page 45: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/45.jpg)
![Page 46: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/46.jpg)
![Page 47: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/47.jpg)
![Page 48: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/48.jpg)
![Page 49: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/49.jpg)
![Page 50: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/50.jpg)
![Page 51: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/51.jpg)
Our Approach to Mitigation
• Coastal landform protection, restoration, augmentation
• Mostly low cost
• Many things individuals can do
• Environmentally sensitive
• Considers geologic/oceanographic processes
![Page 52: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/52.jpg)
PAR For the Shore
• Preserve, Augment, Restore– Dunes (frontal and interior)– Coastal barriers of all types
• Mangroves
• Shoals
• River mouth bars
• Maritime forest
– Add new sand to island
![Page 53: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/53.jpg)
Pandora’s Island—Mitigation on the Beach
![Page 54: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/54.jpg)
Pandora’s Island—Mitigation back from the beach
![Page 55: Coastal Property Damage Mitigation Risk Assessment GEOL 4093](https://reader035.vdocument.in/reader035/viewer/2022070412/5697bf771a28abf838c81673/html5/thumbnails/55.jpg)
Pandora’s Island becomes Fantasy Island