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The Georgia Flood Map Modernization Program
Nolton
A Partnership between FEMA, the State of Georgia, and Community Mapping Partners
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Scoping Meeting Agenda
• Please sign attendance sheet• Introduce Presenters• Attendee Introductions• Purpose of This Meeting• National Flood Map Modernization
Program• Benefits to Community• Georgia Flood Map Modernization Program• Organizational Roles• Overview of Flood Mapping Process• Breakout Session
– Discuss map needs and data sharing
Nolton
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Presenters• FEMA
– Laura Algeo, Project Engineer
– Janice Mitchell, Mitigation Specialist
• Georgia DNR-EPD– Collis Brown, State
Floodplain Coordinator – Mindy Crean, Floodplain
Specialist– Alan Giles, Floodplain
Specialist– Ban Yousif, Map
Modernization Program Manager
– Nolton Johnson, Branch Chief
– Victor Onwueme, GIS Lead– James Stapel, GIS
Supervisor
• National Service Provider– Beth Breed, Project
Manager– Greg Lowe, Engineering
Manager– John Newcomb-Thompson,
Civil Associate• PBS&J
– Mike DePue, Project Manager
– Joe Martinenza, Project Manager
– Garrett Skinner, Floodplain Scientist
– Jim Meador, Senior Floodplain Scientist
– Charles Absher,Program Manager –Georgia Water Resources
Nolton
Attendee Introductions
Nolton
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Points of Contact…
• Collis Brown– State NFIP Coordinator– 404-656-6382– [email protected]
• Mike DePue– Project Manager– 800-697-7275 x227
Nolton
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Purpose of This Meeting
• Prepare for potential flood map production in coming Fiscal Years– Identify community map update
needs– Identify community data useful in
map update process– Determine any ongoing projects that
may affect project timing
• To adjust priorities if major factors come to light
Nolton
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National Flood Map Modernization
• Nationwide, 5-year, $1 billion program • Update FEMA’s Flood Insurance Rate
Maps (FIRMs) for the entire nation• Produce seamless flood data• Build State partner mapping capacity• Produce quality maps• Reduce map production time• Reduce cost/time for future updates
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Map Mod Benefits to Community
• Digital Flood Insurance Rate Map (DFIRM)– GIS information– Includes database
• Improved tool for floodplain management• Better flood insurance coverage and rating• Countywide DFIRMS—easier to use• Community input into process• Leverage previous community investments• Maximize state/federal/local resources
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Georgia Map Mod
• Mapping State• End-to-end production• Aggressive outreach program• Must map all 159 counties in State by
end of FY09• Budgets very tight• Many unmapped communities in
Georgia require creation of first time flood map
• FEMA will not pay for topographic data acquisition
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Georgia Flood Mapping Plan
• Create new flood maps for entire state over five years
• First-cut factors for draft priority– Population density– Recent disaster history– Age of maps
• Plan county-based for FY03-FY06• Plan is RDC-based for FY07-FY09
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Georgia PlanAnticipated DFIRM Delivery Year
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Key Elements of GA MapMod
• Project web site– www.GeorgiaDFIRM.com– Project status– PDFs of maps– Memorandums of
Agreement– Submit Map update need– Join email list– Handouts and
informational documents on technical and administrative topics
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Website—County Status
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Memorandum of Agreement
“Important Features” Section
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FEMA Role in Map Mod
• FEMA– Sets national standards and
requirements•Guidelines and Specifications
– Provides significant share of funding– Agreements with States and Regional
Authorities as Cooperating Technical Partners (CTPs)
– Is an advocate for Georgia on National level
– Established National MetricsBeth
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NSP Role in Map Mod
• National Service Provider (NSP)– Supports FEMA in the
implementation of Map Mod Program• Manages the overall Map Mod program• Provides tools and procedures• Development of web-based data
management system: Multihazard Information Platform (MIP)
– DFIRM and supporting data storehouse– Deliverables by phase– www.hazards.fema.gov/
Beth
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State Role in Map Mod
• Department of Natural Resources (Environmental Protection Division)– Manages flood mapping program – Prioritizes mapping projects on State
level– Links local priorities to National
priorities– Provides services, staff, and funding to
support Map Modernization program
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RDC Role in Map Mod
• RDCs– Use GIS data developed by State in
their programs– Provide information on flood mapping
needs– Provide data (where available) to
update maps– Offer complementary programs to
work with communities– Assist in outreach and
communication
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Community Role in Map Mod
• Community:– Help set local flood mapping priorities– Drafting, implementing, and enforcing
floodplain management measures– Use most recent FIRMs– Provide information to State & FEMA to
help keep FIRMs current– Meet minimum standards of the NFIP to
continue eligibility for NFIP flood insurance – Give consideration to higher standards for
floodplain management (State model ordinance)
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Other Roles in Map Mod
• PBS&J– Contractor for State– Incorporates community data into flood maps– Completes flood map updates via engineering
and GIS development– Directly coordinates with communities
• Other Federal and State Agencies– Provide information on flood mapping needs– Provide data (where available) to update
maps– Offer complementary programs to work with
communitiesCollis
21Time frames given are approximate and will vary from study to studyTime frames given are approximate and will vary from study to study
Flood Mapping Process
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A DFIRM is…
• Digital Flood Insurance Rate Map• A GIS map of the floodplain limits,
other flood features and base map data• A database of flood-related information
Mike
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GA MapMod & New H&H
• State operating plan is– Incorporate community data onto
DFIRMs wherever possible• “Incorporate Studies By Others”
– Where Georgia undertakes H&H, do so in a way that facilitates use of models for other purposes
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Georgia Map Mod Produces
• Digital H&H models in SELECT areas– Where “Studies by others” incorporated– New limited detail study– These two elements account for about
8% of study budget in most counties
• Use of effective FEMA information in many other areas– Approximate (Zone A) study– Detailed (Zone AE) study
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Incorporate Studies By Others
• Take community-supplied data and incorporate into DFIRM– Data must represent EXISTING or FUTURE
100-yr flood boundaries– Submitted data is reviewed
• Verify it meets FEMA specifications– H&H– Mapping– Topographic base– Consistency
• If changes needed, sent back to originating engineer
– Data archived with final study
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Incorporate Studies By Others
• Example: Gwinnett County– County has already completed 100-yr
existing and future conditions mapping countywide
– Georgia Map Mod showing 100-yr existing and future conditions floodplain on DFIRMs
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Incorporate Studies By Others
NOTE: FINAL GWINNETT MAP WILL BE VECTOR-BASED, NOT ORTHO-BASED AS SHOWN HERE
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Limited Detail Study• Georgia Limited Detail standards
– Uses community 2-4’ equivalent topography– Bridges & culverts measured (not surveyed)
• GPS location of bridges
– Regression or HEC-HMS hydrology• GIS watershed boundaries, TOC, etc• Easy to change for other flows
– HEC-RAS model• GIS XS, centerline, FP boundary
– All GIS and H&H data given to community– State standard for display of limited detail
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Limited Detail Study
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Use of FEMA Effective Information
• Register existing FIRMs to basemap; if available existing workmap is used instead of FIRM
• Existing floodplain boundary lifted from existing map
• Clean up spots where the paper map obviously does not match the base map and other simple fixes
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Use of FEMA Effective Information
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Typical Funds Breakdown
DFIRM Production Preliminary
61.4%
DFIRM Production GPO
18.7% Limited Detail Study4.3%
Redelineation6.9%
Scoping5.5%
Incorporate Study by Others
3.1%
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More Information
• World Wide Web – FEMA
• www.fema.gov• www.fema.gov/mit/• www.fema.gov/mit/tsd
/• www.hazards.fema.go
v/
– Georgia• www.georgiadfirm.co
m
Mike
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Points of Contact…
• Collis Brown– State NFIP Coordinator– 404-656-6382– [email protected]
• Ban Yousif– Map Modernization Program– 404-657-6005– [email protected]
• Mike DePue– Project Manager– 800-697-7275 x227
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QUESTIONS SO QUESTIONS SO FAR ?FAR ?
Mike
Breakout session toreview map update needs
Mike
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What we need from you
• Data from your community / organization– Any new or existing flood studies– Recent topographic data or survey– Flood reduction project information– Identification of areas
• That flood but are not on current FIRM’s as flood zones
• That do not flood but are on current FIRM’s as flood zones
– High water marks (if any) you may haveMike
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What we need from you
• Mark up scoping map / FIRM panels– Identify needs and provide rationale
for each reach proposed for study– Discuss your community’s priorities– Communicate with other
communities on cross-boundary priorities
– Identify points of contact for participants
Mike
