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Riverine Erosion Hazards & Riverine Erosion Hazards & Floodplain Management: Floodplain Management:
An ASFPM White PaperAn ASFPM White Paper
ASFPM National ConferenceASFPM National ConferenceLouisville, KentuckyLouisville, Kentucky
May 19, 2011May 19, 2011
Presentation OverviewPresentation Overview
• ASFPM White Paper Process
• Background: The Status Quo
• Discussion Paper Overview
Santa Clara River, St. George, UT 2005
What is a White Paper?What is a White Paper?• It is:
– A Policy Document– An Overview– A Summary– A First Step
• It is NOT:– A Research Project– A Technical Paper– A Detailed Methodology– A Fully Implemented Plan
ASFPM Discussion Paper ProcessASFPM Discussion Paper Process
• ASFPM Arid Regions Committee – Initiate & Write Draft Paper
• ASFPM Committee Group • State Chapters • ASFPM Board
– Approval?– Implementation as Policy– Recommended Actions
• Action by FEMA?• Implementation by Communities?
You are here
Problem Statement:Problem Statement:
• Erosion of Homes Above the BFE
• Total Loss of Home AND Property
• Occurs Below Q100
• Progressive Over Time Santa Clara River, St. George, UT 2005
Problem Statement:Problem Statement:
• FEMA Recognizes Erosion as Problem– REHA (1999)
• NFIP Requires Erosion Zone Management– Part 60.5 (a) – Communities shall manage– Part 60.24
• Erosion Not in Model Ordinance• Erosion Not on FIRM• Coverage of Erosion Losses Questionable• Erosion Not in FEMA Guidelines
Problem Statement:Problem Statement:
• Local Communities are Regulating Erosion– States: AZ, NH, VT– Communities: AZ, NM, TX, UT, WA
– Erosion Setbacks– River Corridor– Varying Levels of Detail
Paper OverviewPaper Overview
• Riverine Erosion is Important– Occurs Nationwide– $400M/yr in Damages (1999)– Especially Important in Arid West
• Goal: Improve Tools for Delineating & Managing Riverine Erosion
Paper Overview: RecommendationsPaper Overview: Recommendations
#1: Clarify NFIP Regulations for Erosion
– Erosion Zones on FIRM Panels– Provide Insurance Coverage– Guidelines for Erosion Management– CRS Credits for Erosion Management
Paper Overview: RecommendationsPaper Overview: Recommendations
#2: Recognize Foundational Principles
– One Size Does Not Fit All • Each River is Unique
– Delineation Techniques Account for Local Stream Characteristics
– Methodologies Must be Repeatable & Defensible
Paper Overview: RecommendationsPaper Overview: Recommendations
#3: Add Direction to FEMA Guidelines & Specifications for Flood Hazard Mapping Partners– Assure a consistent standard
#4: Develop New Methods to Quantify & Delineate Erosion Hazards– A variety of tools may be required
Paper Overview: RecommendationsPaper Overview: Recommendations
#5: Develop Management Guidelines & Recommendations for NFIP Communties– Best Management Practices– Mitigation Measures– Flood Warning– Delineation– Coordination with Multi-Objective Goals
Paper Overview: RecommendationsPaper Overview: Recommendations
#6: Develop Protocols to Assure Consistent Review– Engineering Design Guidelines– Review Checklists
#7: Conduct Regular Training– Reviewer– Community Officials– Engineers & Planners
Paper Overview: RecommendationsPaper Overview: Recommendations
#8: Collect Better Documentation of Riverine Erosion– Damage Accounts – Photos, News– Central Repository
• #9: Explore Linkages Between Riverine Erosion & Insurance/Management– RiskMAP Multi-hazards– Understanding Risk
Where Do We Go From Here?Where Do We Go From Here?
• ASFPM Committee Approval…Pending
• ASFPM Board Approval….Next Up
• Consideration by IPT?– FEMA, ASFPM, NAFSMA, USACE
• Action….Future– Study & Analysis?– Committee?– Recommendations?
AuthorsAuthors
• ASFPM Arid Regions Committee
– Jeanne Ruefer & Bob Davies, Chairs – Tom Walker/Fleet-Fisher– Marc McIntosh/URS– Input from Committee members
Questions:Questions:• Jon Fuller [email protected]
– Linkedin : Riverine Erosion Group– Twitter: @riverineerosion – Future: www.riverineerosion.com
