Transcript No Slide Title

NC Floodplain Mapping Program
North Carolina
Floodplain Mapping Program
Becoming a
Cooperating Technical State
NC Floodplain Mapping Program
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
NC 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 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 Program
FEMA Flood Insurance Rate Maps in North
Carolina
Mapped Areas
• 100 Counties
• 326 Municipalities
Not Mapped
• 214 Municipalities
NC 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 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 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 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 Program
NC 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 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
1,500,000
1,500,000
$33,000,000
$61,500,000
Project Management
TOTAL
Non-recurring Management Costs
600,000
Recurring Management Costs
900,000
NC Floodplain Mapping Program
Overview of the
Assessment / Scoping Process for the
first six River Basins
NC 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 Program
What Is Scoping? (continued)
• Identifying data needs (DEMs, cross sections, base maps,
etc.)
• Determining proposed scales and paneling scheme for
DFIRM production
• Establishing priority levels
• Developing schedule
NC Floodplain Mapping Program
How Will Scoping Be Accomplished?
• North Carolina will work closely with FEMA and
FEMA’s Mapping Coordination Contractor, Dewberry &
Davis LLC
• Process will involve 5 steps
SCOPING
Step 1
Step 2
PRODUCTION
Step 3
Step 4
Step 5
Initial Mapping
Draft
Final Program
Final Basin
NC Floodplain
Initial Research
and Community
Coordination
Scoping
Meeting
Basin
Plans
Scoping
Meeting
Initial
Scoping
Meetings
Develop
Draft
Basin
Plans
Final
Scoping
Meetings
Plans
State
Kickoff
Meeting with
County/Local
Floodplain
Administrators
Questionnaire
State
Mapping
Needs
Assessment
NC
Scoping
Database
Generate
Initial
Scoping
Package
Finalize
Basin
Plans
FEMA
Effective
FIS & FIRM
Research
FEMA
Evaluate
Post-Floyd
Data
Process for Scoping Six River Basins
in Eastern North Carolina
Prepare
Delivery
Orders
& CTC
Mapping
Activity
Agreements
& Update
CTS
Mapping
Agreement
Analysis
and
Mapping
NC Floodplain Mapping Program
Step 1 – Initial Research and Community
Coordination
• 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
NC Floodplain Mapping Program
Community Questionnaire
• 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)
NC Floodplain Mapping Program
Community Questionnaire (continued)
• 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
NC Floodplain Mapping Program
Step 2 – Initial Scoping Meetings
•
•
•
•
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
NC Floodplain Mapping Program
Step 3 – Draft Basin Plans
• 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
NC Floodplain Mapping Program
Step 4 – Final Scoping Meeting
• 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
NC Floodplain Mapping Program
Step 5 – Final Basin Plans
• 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
NC Floodplain Mapping Program
September
October
November
December
January
Basin
White Oak
3 counties
1
2
3
4 5
partially or entirely
within basin
Tar Pamlico
12 counties
1
2
3
4
5
partially or entirely
within basin
Lumber
7 counties
1
2
3
4
5
partially or entirely
within basin
Neuse
16 counties
1
2
3
4
5
partially or entirely
within basin
Cape Fear
15 counties
1
2
1
2
3
4
partially or entirely
within basin
Pasquotank
8 counties
partially or entirely
within basin
3
4 5
5
February
NC Floodplain Mapping Program
What Happens After Scoping?
• Engineering analyses and mapping completed on basinwide 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