north carolina floodplain mapping program becoming a cooperating technical state
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North Carolina Floodplain Mapping Program Becoming a Cooperating Technical State. Topics for Today. Background Overview of NC Floodplain Mapping Program Overview of the Assessment / Scoping Process for the six (6) initial River Basins Questions and Answers Wrap Up. - PowerPoint PPT PresentationTRANSCRIPT
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
North Carolina
Floodplain Mapping Program
Becoming a
Cooperating Technical State
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
• Background
• Overview of NC Floodplain Mapping Program
• Overview of the Assessment / Scoping Process for the six (6) initial River Basins
• Questions and Answers
• Wrap Up
Topics for Today
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
Needs / Limitations Identified
• Hurricane Floyd revealed data and map limitations
• FEMA program – North Carolina receives on average one updated Flood Study for one county per year
• Only 10-25% of flood hazards in county are evaluated
• ~ 55% of NC FIRMs are at least 10 years old
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
Needs / Limitations Identified (continued)
• ~ 75% of NC FIRMs are at least 5 years old
• Many up-to-date maps are using 15-20 year old studies
• Many counties and communities have indicated that they do not have resources to take on responsibility
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
FEMA Flood Insurance Rate Maps in North Carolina
Mapped Areas• 100 Counties• 326 Municipalities
Not Mapped• 214 Municipalities
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
In response to these defined limitations, North Carolina has developed two strategies:
• Establishment of a statewide program to acquire, process and disseminate current, accurate, and detailed elevation data, flood studies, and maps.
• Establishment of North Carolina as a Cooperating Technical State (CTS) with FEMA.
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
Program Deliverables
• Up-to-date maps (Flood Insurance Rate Maps) being provided to state and local officials (Study Basin by Basin)
• Up-to-date elevation data being provided to state and local officials (2 Feet or Less Vertical Accuracy /95%)
• Reduction of time needed for reviewing and approving proposed changes to FIRM maps (~6-7 months)
• Notification and dissemination of information about new and revised maps being provided to local governments, insurance agents, and citizens
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
Program Deliverables (continued)
• On-going program for updating and maintaining FIRMs • Post-event mitigation activities being better equipped
and supported with timely updates to flood risk maps• Interoperable GIS• Dissemination of data and maps via the Internet• Next generation information architecture• E-gov• Develop real time prediction of flooding
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
Project Schedule
• 5 year statewide program
• 6 river basins completed by August 2002
• 3 river basins before September 2001
• State approval of program August 2000
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
Program Management
• Office of State Budget, Planning and Management– Center for Geographic Information & Analysis– Geodetic Survey
• NC Division of Emergency Management• Federal Emergency Management Agency
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
Estimated Project Costs
Component Priority Basins Statewide
Elevation and Base Data $9,000,000 $18,000,000
Flood Modeling and Maps 22,500,000 42,000,000
Project Management 1,500,000 1,500,000
TOTAL $33,000,000 $61,500,000
Non-recurring Management Costs 600,000
Recurring Management Costs 900,000
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
Overview of the Assessment / Scoping Process for the
first six River Basins
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
What Is Scoping?
• Researching/inventorying available elevation, flood hazard, and digital base map data
• Assessing adequacy of existing flood hazard data
• Receiving input from counties and communities
• Determining best method to update flood data
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
• Identifying data needs (DEMs, cross sections, base maps, etc.)
• Determining proposed scales and paneling scheme for DFIRM production
• Establishing priority levels
• Developing schedule
What Is Scoping? (continued)
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
• North Carolina will work closely with FEMA and FEMA’s Mapping Coordination Contractor, Dewberry & Davis LLC
• Process will involve 5 steps
How Will Scoping Be Accomplished?
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
State
State
FEMA
FEMA
KickoffMeeting with County/Local
Floodplain Administrators
MappingNeeds
Assessment
EffectiveFIS & FIRM Research
EvaluatePost-Floyd
Data
NCScoping
Database
Generate Initial
Scoping Package
InitialScoping Meetings
Develop Draft Basin Plans
Final Scoping Meetings
Finalize BasinPlans
Process for Scoping Six River Basinsin Eastern North Carolina
Prepare Delivery Orders& CTC
Mapping Activity
Agreements & Update
CTS Mapping
Agreement
Analysis and
Mapping
Step 1
Initial Research and Community
Coordination
Step 2
Initial Scoping Meeting
Step 3
Draft Basin Plans
Step 4
Final Scoping Meeting
Step 5
Final Basin Plans
SCOPING PRODUCTION
Questionnaire
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
• Today’s kickoff meeting—community questionnaire
• Complete Assessment of Community Mapping Needs (CTC Agreement)
• FEMA will research FIS/FIRM and other data for each community
• With FEMA, evaluate post-Hurricane Floyd data
Step 1 – Initial Research and Community Coordination
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
• Your response is very important!
• Information you provide will assist the State in developing Statewide inventory of flood mapping needs
• Have questions or need help completing the questionnaire?
– Call (877) 336-2627 (toll free)
Community Questionnaire
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
• Please send the completed assessment form (mail, fax, or e-mail) to Ken Taylor
– Submission information is contained in the questionnaire
• Digital version of questionnaire available (in MS Excel format)– E-mail request to [email protected]
• Please submit by September 29, 2000
Community Questionnaire (continued)
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
• Meetings in each county
• Present results of Step 1 research
• Ask for community input
• Meet individually with county and each community’s representatives
• Each county and community will be contacted to schedule the meeting
Step 2 – Initial Scoping Meetings
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
• Synthesize research and community input
• Draft basin plans will include:
– Comprehensive lists of flooding sources to be updated
– Counties for which DFIRMs will be produced
– Overall schedule
Step 3 – Draft Basin Plans
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
• Meetings held in each basin
• Two or three separate meetings may be held in larger basins
• All impacted counties and communities will be invited
• Present draft basin-wide plans
• Provide final opportunity for input
Step 4 – Final Scoping Meeting
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
• Final basin plans will be used to:
– Complete CTS Task Agreement with FEMA
– Develop Delivery Orders for our mapping contractor
– Develop CTC Mapping Activity Agreements with any counties or local communities
– Production phase will then begin
Step 5 – Final Basin Plans
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
White Oak3 counties
partially or entirelywithin basin
Tar Pamlico12 counties
partially or entirelywithin basin
Lumber7 counties
partially or entirelywithin basin
Neuse16 counties
partially or entirelywithin basin
Cape Fear15 counties
partially or entirelywithin basin
Pasquotank8 counties
partially or entirelywithin basin
September October November December January February
Basin
51 2 3 4
54321
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
1 2 3 54
NC Floodplain Mapping ProgramNC Floodplain Mapping Program
• Engineering analyses and mapping completed on basin-wide basis
• Results “carved” into countywide DFIRMs
• Work conducted by State contractor
• Preliminary DFIRMs for three basins by August 2001
• Preliminary DFIRMs for other three basins by August 2002
What Happens After Scoping?