ri shoreline change special area management plan
TRANSCRIPT
Years before present
Rat
e of
SLR
(mm
/yr)
“Geologic past” (Fairbanks, 1989; Horton et al. 2009)
“Instrumental record”(Church and White, 2006)
“Projections”(Rahmstorf, 2007)
Past, present, and potential future rates of sea-level rise
So, what can happen?Bluff erosion
Overwash
Island Breaching
Threshold CrossingUrban Inundation
R. Carlson
Wetland Migrationor Loss
Water Quality Reduction
Ecosystem Change
Infrastructure Failure
ListedSpeciesImpacts
Shoreline Change/Beach
SAMP
New Data & Information: •Erosion & Sediment Transport Mapping & Monitoring
• Inundation Mapping • Identification of Areas/Infrastructure at risk
•Economic Analysis•Engineering Evaluation of tools/techniques
• Salt Marsh Migration
Planning Tools and Policy Development• Legal review of Alternative Development Strategies
• Review of Techniques used elsewhere to address these issues
• Lessons learned in NY/NJ from Sandy• Recommendations or Guidance to Municipalities or other State Agencies on Best Practices or Policy
• New/Improved CRMC Policies
Education, Outreach & Communication•Webpage• Fact Sheets & Targeted Mailings• Social Media• Library Lectures & Stakeholder Meetings• “Group of Community Leaders” to help get message out
• Videos & Accounts of Personal Connection
Other statewide studies:
• EC4• Dept of Health (health &
drinking water)• Dept of Env. Management
(waste water facilities)• Dept of Transportation
(transportation infrastructure)
Products We Are Working On• New data and information about the shore face dynamics will be developed• Updated Erosion Maps—how has the shoreline changed over time and how
might we expect it to change in the future?• Sediment Transport Analysis—where does the sand go after it has been
washed away?• Salt Marsh Impact Assessment—how will our wetlands respond to rising sea
levels, will they migrate landward or drown in place?• Economic Analysis—what is the cost (insurance, rebuilding, taxes)
associated with shoreline change?• Identification of at risk areas and infrastructure—what infrastructure or
facilities are at risk from flooding both in the short-term from a major storm event or over the long-term from rising sea levels?
• Integration of findings from other statewide vulnerability assessments—integrating all state findings related to shoreline change will provide a more comprehensive picture and improve planning.
• Analysis of the legal questions surrounding shoreline change
Tools We Are Working On• A review of tools and techniques that have been used in other
places around the USA and the world to potential applicability to the situations in Rhode Island.
• Guidelines for Establishing Local Emergency Permitting for Post-Storm Recovery
• A compendium of Adaptation Techniques• Homebuyers Guide to Understanding Impacts of Shoreline
Change on Coastal Properties• Lessons learned from Hurricane Sandy in New Jersey and New
York, and how those lessons relate to and may be able to be adapted to the issues going on in Rhode Island.
• Develop a “Nuts and Bolts” took kit for Cities and Towns to draw up
• Engineering Review of Potential Rhode Island Adaptation Techniques
• Build private sector solutions that shift towards adaptation.
Goal: develop independent set of FIRMS for Washington County using state of the art
methods• Surge and wave simulations forced by NACCS ADCIRC and SWAN simulations at save points for extra‐tropical and tropical storms.
• Simulations of near‐shore wave field and estimates of BFEs using STWAVE
• Extremal analysis based on NOAA Generalized Extreme Value (GEV) analysis tool
• Create FIRM maps based on state of the art methods