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Physical Map Revisions as a Result
of Updated Coastal Flood Hazards
2
Agenda
 Coastal Flood Hazard Analysis Recap
 Public Review and Appeal Period
 Effect on Existing Letters of Map Change
 Insurance
 Questions
3
Post-Preliminary Phase Timeline
7days
90days
Compliance
Period
Typical Post Preliminary Phase takes approximately 14 months to complete
6months
Est.June2014
July18&192013
October172013
Est.Dec.2013*
May3,2013
Review and Appeal Period
July11&122013
June17,2013
*LFD scheduled in December due to the Town Meeting requirement
4
COASTAL FLOOD HAZARD
ANALYSIS RECAP
5
History of Coastal Floodplain Mapping
1968
1973
1977
1979
1981
1986
to
1988
1988
1989
1995
2002
2005
2007
NFIP
Authorized
Hb = 3'
NAS Develops
Wave Analysis
Methodology
FEMA Adopts NAS
Methodology
Runup
Methodology
Accepted
Wetland Vegetation
Muddy Bottom
Erosion Analysis (540SF)
Primary
Frontal
Dune
CERC
TR 89-15
Guides & Specifications
for Wave Elevation and V
Zone Mapping
Appendix D
PM No. 37
Atlantic Ocean and Gulf
of Mexico Guidelines
Update (Final Draft)
2008
PM No. 50
6
Study Update Methodologies
Levels of Study
 Coastal Analysis
 Area studied:
All communities
along Cape Cod
Coastline
7
Data Used for Coastal Analysis
 Elevation data from Northeast LiDAR Mission
collected between 2010 – 2011 (available from
MassGIS)
• Flooding mapped using digital elevation model
(DEM) derived from bare-earth LiDAR.
• LiDAR Data is sufficiently accurate for
development of 1-foot contours.
 Appendix D (2003) of the Guidelines and
Specifications and Atlantic and Gulf Coast
Update (2007)
8
LiDAR Coverage
9
Detailed Study – Coastal Analysis
• Coastal analysis - includes 4
main components:
– Stillwater Level (storm surge)
+ Wave Set-up
– Overland Wave Propagation
– Wave Runup and
Overtopping
– Primary Frontal Dune
10
Detailed Study – Stillwater Level
(SWEL)
 SWEL Data taken from
effective studies and
interpolated on to new
transect placement.
11
Detailed Study – Wave Setup
 Numerically determined at each coastal transect
 Determining factors
• Average nearshore slope [depth of wave breaking to SWEL]
• Deepwater significant wave height
 SWEL + Wave Setup = Total Water Level (TWL)
 Areas where floodplain is restrictive, wave setup is removed and SWEL
is mapped
• Constrictions such as low bridges
• Narrowing of the floodplain
12
Detailed Study – Overland Wave
Propagation
13
Detailed Study – Runup and
Overtopping
14
Detailed Study – Primary Frontal
Dunes
15
FEMA Coastal Outreach Website
www.fema.gov/coastal-flood-risks
16
PUBLIC REVIEW &
APPEAL PERIOD
17
Post-Preliminary Phase Timeline
7days
90days
Compliance
Period
Typical Post Preliminary Phase takes approximately 14 months to complete
6months
Est.June2014
July18&192013
October172013
Est.Dec.2013*
May3,2013
Review and Appeal Period
July11&122013
June17,2013
*LFD scheduled in December due to the Town Meeting requirement
18
Community Review
 Statutory 90-day Appeal Period:
• Publication in Federal
Register
• Letter to Community Official
• Newspaper publication,
and…
• Maps and data available
online!
19
Website
www.fema.gov/preliminaryfloodhazarddata
20
What is an Appeal?
Providing scientific/technical data to:
 Show new or revised Base Flood Elevations (BFEs) or Zone AO depths
 Show new or revised Special Flood Hazard Area (SFHA) boundaries
(including both increases and decreases in the extent of the SFHA)
21
What is a Comment?
 Corporate limit revisions
 Road name errors and revisions
 Flooding source name errors and revisions
 Base map errors
22
EFFECT ON EXISTING
LETTERS OF MAP CHANGE
23
 Summary of Map Actions (SOMA)
• Background
 Letters of Map Change (LOMCs) are legally binding
changes to the map
• Summary of Map Actions is an assessment of all
existing LOMCs compared with the new FEMA maps
Post-Preliminary Processing
24
• Category 1: shown on the new
DFIRM panel
• Category 2: NOT shown on the
new DFIRM panel due to scale
limitations (revalidated after the
new DFIRMs become effective)
Summary of Map Actions
25
• Category 3: superseded, and no
longer valid, due to revised flood
hazards
• Category 4: property owner must
request this be re-determined
Summary of Map Actions (continued)
26
Revalidation of Letters of Map
Change (LOMCs)
 The Summary of Map Actions (SOMA) is used to
generate a Revalidation Letter
 The Revalidation Letter is issued to the community
 Community officials are encouraged to disseminate
this information
 Is available at FEMA Map Service Center
msc.fema.gov
27
FLOOD INSURANCE
28
Flood Insurance: Concepts & Issues
 Concepts
• Pre-FIRM Buildings – why are they priced differently
• Premium subsidies – what are they?
 Pre-FIRM subsidy
 Grandfathering subsidies
 Loyal Customer
 Built-in-Compliance
 Biggert-Waters NFIP Reform Act of 2012
• Pre-FIRM Non-Principal Residence: Phasing out subsidized portion of
Premium effective January 1, 2013
• Certain Pre-FIRM subsidies phased-out or eliminated effective October 1,
2013 (please reference the handout)
 Preferred Risk Extension Rule
• Will be replaced in 2014
 Lender Requirements
29
Points of Contact
 Massachusetts DCR Contacts
• Richard Zingarelli, State NFIP Coordinator
Richard.Zingarelli@state.ma.us
• Colleen Bailey, State Flood Hazard Mapping
Coordinator
A.Colleen.Bailey@state.ma.us
• Marybeth Groff, State Hazard Mitigation Planner,
MEMA
Marybeth.Groff@state.ma.us
 STARR Contacts
• Brian Caufield, Project Manager
Brian.Caufield@starr-team.com
 FEMA Region I Contacts
• Kerry Bogdan, Project Manager and
Senior Engineer
Kerry.Bogdan@fema.dhs.gov
• Marilyn Hilliard, Senior Planner
Marilyn.Hilliard@fema.dhs.gov
• Bob Desaulniers, Regional Insurance
Specialist
Robert.Desaulniers@fema.dhs.gov
 STARR Regional Service Center
• Alex Sirotek, RSC Lead
Alex.Sirotek@starr-team.com
 National Flood Insurance Program –
iService Team
• Tom Young, Manger – Region I New
England
tyoung@ostglobal.com
Please send all comments/protests/appeals to:
Brian Caufield, STARR, 50 Hampshire Street, Cambridge,
MA 02139
Please copy:
Kerry Bogdan, FEMA Region 1, 99 High Street, 6th Floor,
Boston, MA 02110
Alex Sirotek, STARR, 99 High Street, 3rd Floor, Boston, MA
02110
Rich Zingarelli, MA DCR, 251 Causeway Street, Suite 800,
Boston, MA 02114
30
Who Do I Contact With Questions?
 For general FEMA mapping and LOMC questions contact FEMA’s Map
Information Exchange (FMIX): 1-877-FEMA MAP (1-877-336-2627) or
email a Map Specialist: FEMAMapSpecialist@riskmapcds.com
 Map Service Center (MSC): where you can view effective maps online
for free http://www.msc.fema.gov/
 To learn more about the National Flood Insurance Program:
http://www.floodsmart.gov/floodsmart/ or call 1-800-427-4661
Questions?
32
WEB LINKS
 Preliminary Data
• www.fema.gov/preliminaryfloodhazarddata
 Effective Data (including Future Effective)
• msc.fema.gov
 Coastal Outreach Material
• www.fema.gov/coastal-flood-risks
 Mitigation Action Tracker
• fema.starr-team.com
 Multi-Hazard Planning Website
• www.fema.gov/multi-hazard-mitigation-planning
 Mitigation Ideas
• www.fema.gov/library/viewRecord.do?id=6938
 National Flood Insurance Program
• www.floodsmart.gov
 Flood Insurance Reform Act
• www.fema.gov/national-flood-insurance-program/flood-insurance-reform-act-2012

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FEMA Flood Zone Update Slideshow

  • 1. Physical Map Revisions as a Result of Updated Coastal Flood Hazards
  • 2. 2 Agenda  Coastal Flood Hazard Analysis Recap  Public Review and Appeal Period  Effect on Existing Letters of Map Change  Insurance  Questions
  • 3. 3 Post-Preliminary Phase Timeline 7days 90days Compliance Period Typical Post Preliminary Phase takes approximately 14 months to complete 6months Est.June2014 July18&192013 October172013 Est.Dec.2013* May3,2013 Review and Appeal Period July11&122013 June17,2013 *LFD scheduled in December due to the Town Meeting requirement
  • 5. 5 History of Coastal Floodplain Mapping 1968 1973 1977 1979 1981 1986 to 1988 1988 1989 1995 2002 2005 2007 NFIP Authorized Hb = 3' NAS Develops Wave Analysis Methodology FEMA Adopts NAS Methodology Runup Methodology Accepted Wetland Vegetation Muddy Bottom Erosion Analysis (540SF) Primary Frontal Dune CERC TR 89-15 Guides & Specifications for Wave Elevation and V Zone Mapping Appendix D PM No. 37 Atlantic Ocean and Gulf of Mexico Guidelines Update (Final Draft) 2008 PM No. 50
  • 6. 6 Study Update Methodologies Levels of Study  Coastal Analysis  Area studied: All communities along Cape Cod Coastline
  • 7. 7 Data Used for Coastal Analysis  Elevation data from Northeast LiDAR Mission collected between 2010 – 2011 (available from MassGIS) • Flooding mapped using digital elevation model (DEM) derived from bare-earth LiDAR. • LiDAR Data is sufficiently accurate for development of 1-foot contours.  Appendix D (2003) of the Guidelines and Specifications and Atlantic and Gulf Coast Update (2007)
  • 9. 9 Detailed Study – Coastal Analysis • Coastal analysis - includes 4 main components: – Stillwater Level (storm surge) + Wave Set-up – Overland Wave Propagation – Wave Runup and Overtopping – Primary Frontal Dune
  • 10. 10 Detailed Study – Stillwater Level (SWEL)  SWEL Data taken from effective studies and interpolated on to new transect placement.
  • 11. 11 Detailed Study – Wave Setup  Numerically determined at each coastal transect  Determining factors • Average nearshore slope [depth of wave breaking to SWEL] • Deepwater significant wave height  SWEL + Wave Setup = Total Water Level (TWL)  Areas where floodplain is restrictive, wave setup is removed and SWEL is mapped • Constrictions such as low bridges • Narrowing of the floodplain
  • 12. 12 Detailed Study – Overland Wave Propagation
  • 13. 13 Detailed Study – Runup and Overtopping
  • 14. 14 Detailed Study – Primary Frontal Dunes
  • 15. 15 FEMA Coastal Outreach Website www.fema.gov/coastal-flood-risks
  • 17. 17 Post-Preliminary Phase Timeline 7days 90days Compliance Period Typical Post Preliminary Phase takes approximately 14 months to complete 6months Est.June2014 July18&192013 October172013 Est.Dec.2013* May3,2013 Review and Appeal Period July11&122013 June17,2013 *LFD scheduled in December due to the Town Meeting requirement
  • 18. 18 Community Review  Statutory 90-day Appeal Period: • Publication in Federal Register • Letter to Community Official • Newspaper publication, and… • Maps and data available online!
  • 20. 20 What is an Appeal? Providing scientific/technical data to:  Show new or revised Base Flood Elevations (BFEs) or Zone AO depths  Show new or revised Special Flood Hazard Area (SFHA) boundaries (including both increases and decreases in the extent of the SFHA)
  • 21. 21 What is a Comment?  Corporate limit revisions  Road name errors and revisions  Flooding source name errors and revisions  Base map errors
  • 23. 23  Summary of Map Actions (SOMA) • Background  Letters of Map Change (LOMCs) are legally binding changes to the map • Summary of Map Actions is an assessment of all existing LOMCs compared with the new FEMA maps Post-Preliminary Processing
  • 24. 24 • Category 1: shown on the new DFIRM panel • Category 2: NOT shown on the new DFIRM panel due to scale limitations (revalidated after the new DFIRMs become effective) Summary of Map Actions
  • 25. 25 • Category 3: superseded, and no longer valid, due to revised flood hazards • Category 4: property owner must request this be re-determined Summary of Map Actions (continued)
  • 26. 26 Revalidation of Letters of Map Change (LOMCs)  The Summary of Map Actions (SOMA) is used to generate a Revalidation Letter  The Revalidation Letter is issued to the community  Community officials are encouraged to disseminate this information  Is available at FEMA Map Service Center msc.fema.gov
  • 28. 28 Flood Insurance: Concepts & Issues  Concepts • Pre-FIRM Buildings – why are they priced differently • Premium subsidies – what are they?  Pre-FIRM subsidy  Grandfathering subsidies  Loyal Customer  Built-in-Compliance  Biggert-Waters NFIP Reform Act of 2012 • Pre-FIRM Non-Principal Residence: Phasing out subsidized portion of Premium effective January 1, 2013 • Certain Pre-FIRM subsidies phased-out or eliminated effective October 1, 2013 (please reference the handout)  Preferred Risk Extension Rule • Will be replaced in 2014  Lender Requirements
  • 29. 29 Points of Contact  Massachusetts DCR Contacts • Richard Zingarelli, State NFIP Coordinator Richard.Zingarelli@state.ma.us • Colleen Bailey, State Flood Hazard Mapping Coordinator A.Colleen.Bailey@state.ma.us • Marybeth Groff, State Hazard Mitigation Planner, MEMA Marybeth.Groff@state.ma.us  STARR Contacts • Brian Caufield, Project Manager Brian.Caufield@starr-team.com  FEMA Region I Contacts • Kerry Bogdan, Project Manager and Senior Engineer Kerry.Bogdan@fema.dhs.gov • Marilyn Hilliard, Senior Planner Marilyn.Hilliard@fema.dhs.gov • Bob Desaulniers, Regional Insurance Specialist Robert.Desaulniers@fema.dhs.gov  STARR Regional Service Center • Alex Sirotek, RSC Lead Alex.Sirotek@starr-team.com  National Flood Insurance Program – iService Team • Tom Young, Manger – Region I New England tyoung@ostglobal.com Please send all comments/protests/appeals to: Brian Caufield, STARR, 50 Hampshire Street, Cambridge, MA 02139 Please copy: Kerry Bogdan, FEMA Region 1, 99 High Street, 6th Floor, Boston, MA 02110 Alex Sirotek, STARR, 99 High Street, 3rd Floor, Boston, MA 02110 Rich Zingarelli, MA DCR, 251 Causeway Street, Suite 800, Boston, MA 02114
  • 30. 30 Who Do I Contact With Questions?  For general FEMA mapping and LOMC questions contact FEMA’s Map Information Exchange (FMIX): 1-877-FEMA MAP (1-877-336-2627) or email a Map Specialist: FEMAMapSpecialist@riskmapcds.com  Map Service Center (MSC): where you can view effective maps online for free http://www.msc.fema.gov/  To learn more about the National Flood Insurance Program: http://www.floodsmart.gov/floodsmart/ or call 1-800-427-4661
  • 32. 32 WEB LINKS  Preliminary Data • www.fema.gov/preliminaryfloodhazarddata  Effective Data (including Future Effective) • msc.fema.gov  Coastal Outreach Material • www.fema.gov/coastal-flood-risks  Mitigation Action Tracker • fema.starr-team.com  Multi-Hazard Planning Website • www.fema.gov/multi-hazard-mitigation-planning  Mitigation Ideas • www.fema.gov/library/viewRecord.do?id=6938  National Flood Insurance Program • www.floodsmart.gov  Flood Insurance Reform Act • www.fema.gov/national-flood-insurance-program/flood-insurance-reform-act-2012

Editor's Notes

  1. Tom to discuss PM50 – why we are doing coastal analysis
  2. (Removed image for additional bullet points)
  3. An appeal must be based on data that show the proposed or modified BFEs, Zone AO depths, SFHA boundaries, SFHA zone designations, or floodways to be scientifically or technically incorrectUnless appeals are based on indisputable mathematical or measurement errors or the effects of physical changes that have occurred in the floodplain, they must be accompanied by all data that FEMA needs to revise the preliminary version of the FIS report and FIRMs. Therefore, appellants should be prepared to perform coastal, hydrologic and hydraulic analyses, to plot new and/or revised Flood Profiles, and to delineate revised SFHA zone and regulatory floodway boundaries as necessaryProposed BFEs, Zone AO depths, SFHA zone designations, or floodways are said to be scientifically incorrect if the methodology used in the determination of the BFEs, Zone AO depths, SFHA zone designations, or floodway is inappropriate or incorrect, or if the assumptions made as part of the methodology are inappropriate or incorrect.
  4. An appeal must be based on data that show the proposed or modified BFEs, Zone AO depths, SFHA boundaries, SFHA zone designations, or floodways to be scientifically or technically incorrectUnless appeals are based on indisputable mathematical or measurement errors or the effects of physical changes that have occurred in the floodplain, they must be accompanied by all data that FEMA needs to revise the preliminary version of the FIS report and FIRMs. Therefore, appellants should be prepared to perform coastal, hydrologic and hydraulic analyses, to plot new and/or revised Flood Profiles, and to delineate revised SFHA zone and regulatory floodway boundaries as necessaryProposed BFEs, Zone AO depths, SFHA zone designations, or floodways are said to be scientifically incorrect if the methodology used in the determination of the BFEs, Zone AO depths, SFHA zone designations, or floodway is inappropriate or incorrect, or if the assumptions made as part of the methodology are inappropriate or incorrect.
  5. An appeal must be based on data that show the proposed or modified BFEs, Zone AO depths, SFHA boundaries, SFHA zone designations, or floodways to be scientifically or technically incorrectUnless appeals are based on indisputable mathematical or measurement errors or the effects of physical changes that have occurred in the floodplain, they must be accompanied by all data that FEMA needs to revise the preliminary version of the FIS report and FIRMs. Therefore, appellants should be prepared to perform coastal, hydrologic and hydraulic analyses, to plot new and/or revised Flood Profiles, and to delineate revised SFHA zone and regulatory floodway boundaries as necessaryProposed BFEs, Zone AO depths, SFHA zone designations, or floodways are said to be scientifically incorrect if the methodology used in the determination of the BFEs, Zone AO depths, SFHA zone designations, or floodway is inappropriate or incorrect, or if the assumptions made as part of the methodology are inappropriate or incorrect.
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