fema updated floodplain maps public works department stormwater management division august 5, 2008...
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FEMA UPDATED FLOODPLAIN MAPS
Public Works Department Stormwater Management Division
August 5, 2008
FEMA UPDATED FLOODPLAIN MAPS
Public Works Department Stormwater Management Division
August 5, 2008
PRESENTATION OUTLINE
●Background
●Map Development
●Map Results
●FEMA Timeline
●Recommendations
●Action Item
BACKGROUND
• 600 Lakes in Orange County• 12 Major Drainage Basins• 180,000 Acres of Floodplain• 50 Inches of Rainfall• FEMA Map Update
BACKGROUND
• Orange County participates in the National Flood Insurance Program (NFIP)
• Allows citizens to purchase flood insurance in flood prone areas
BACKGROUND
•FEMA requires Orange County to amend the Floodplain Ordinance
BACKGROUND
Community Rating System Upgrade Effective May 2008
●Class 5
●Premium Discount 25 %
●Average Savings Per Policy $ 64
●Total Annual Savings $ 828,306
Communities Participating in the CRS Program - 2008
0
50
100
150
200
250
300
350
400
450
500
10 9 8 7 6 5 4 3 2 1
CRS Class Rating
Nu
mb
er
of
Co
mm
un
itie
s
CRS Ranking
120
274
459
229
81
41
1 1 12
Greater DiscountSmaller Discount
Orange County Orange County (Top 4%)(Top 4%)
Orange County Orange County (Top 4%)(Top 4%)
% Premium Discount00 5 10 15 20 25 30 35 40 45
Nu
mb
er
of
Com
mu
nit
ies
Communities Participating in the CRS Program
BACKGROUND
Annual Flood Insurance Premiums
● Single-Family Homes Average $400-$450 Nationwide
● Orange County Average $383
● With 25% Discount $287
BACKGROUND
Flood Insurance Rate Map Dec. 2000
BACKGROUND
●May 2005 -Kickoff Meeting
●August 2006 -FIS Study Meeting
●September 2006 -Preliminary Maps
●March 6, 2007 -Presentation to BCC
●March 13, 2007 -Preliminary FIS Meeting
●March 13-14, 2007 -FEMA Public Outreach
PRESENTATION OUTLINE
●Background
●Map Development
●Map Results
●FEMA Timeline
●Recommendations
●Action Item
MAP DEVELOPMENT
WekivaRiver
LakeApopka
CypressCreek
ReedyCreek
ShingleCreek
LittleWekiva
HowellBranch
LittleEcon
BoggyCreek
LakeHart
BigEcon St. Johns River
LEGEND
Master Plans Provided to FEMA
Drainage Basins
Topographic Data Provided to FEMA
● New contours were provided to FEMA
● New jurisdictional boundaries provided
MAP DEVELOPMENT
• Street names were corrected
• Computer models were reviewed
• Impacts on citizens were determined
● LIDAR is the acronym for:
−Light Detectionand Ranging
● LIDAR can Measure:
−Distance−Speed−Rotation−Chemical Composition
MAP DEVELOPMENT
MAP DEVELOPMENT
PRESENTATION OUTLINE
●Background
●Map Development
●Map Results
●Issues
●FEMA Timeline
●Recommendations
●Action Item
MAP RESULTS
Summary of Parcels & Structures in Floodplain
Dec 2000 New Map Net Reduction %
Parcels 31,054 28,626 2,428 8
Structures 7,460 3,796 3,664 49
Commission District Dec 2000 New Maps Dec 2000 New Maps
District 1 8,968 7,381 1,736 555
District 2 3,240 2,869 877 612
District 3 3,652 3,835 1,142 721
District 4 8,892 8,496 2,291 1,299
District 5 5,042 4,831 977 208
District 6 1,260 1,214 410 401
Total 31,054 28,626 7,460 3,796
Dec 2000 Map Verses New Map
MAP RESULTS
Parcels in Floodplain
Structures in Floodplain
MAP RESULTS
•1,549 structures were added to the floodplain due to:
− Changes in 100-year elevations− Better topography− The scale of maps
•Letter of Map Revision(LOMR)
• Structures built in compliance of FEMA
requirements at the
time of construction
maintain the same insurance benefits.
MAP RESULTS
GRANDFATHER CLAUSE
PRESENTATION OUTLINE
●Background
●Map Development
●Map Results
●FEMA Timeline
●Recommendations
●Action Item
FEMA TIMELINE
2.0Public
Meeting
Completed
3.0 BFE Appeal
Period (90 days)
4.0 Letter of
FinalDetermin-
ation
5.0 Compliance
Period
6.0FIRM Map
Effective Date
1.0 Preliminary
FIRM Map
Completed
1.0 Completed
2.0 Completed
3.0 BFE Appeal Period (90 days)– Sep to Nov 2008
4.0 Letter of Final Determination – Jan 2009
5.0 Compliance Period – Jan 2009 to Jul 2009
6.0 FIRM Map Effective Date – Jul 2009
PRESENTATION OUTLINE
●Background
●Map Development
●Map Results
●FEMA Timeline
●Recommendations
●Action Item
RECOMMENDATIONS
● Accept FEMA’s New Floodplain Maps
● Provide Public Outreach to citizens
● Evaluate the County’s floodplain ordinance
RECOMMENDATIONS
Public Information Program
●Post Card Notification
●Web Page−Program Background
−Eligibility for 25%
−LOMR Process
−Contact Information
for Questions
●Info Map
●Orange TV
PRESENTATION OUTLINE
●Background
●Map Development
●Map Results
●FEMA Timeline
●Recommendations
●Action Item
● Accept FEMA’s New Floodplain Maps
● Authorize Staff to Implement Public Information Program
● Authorize Staff to Evaluate the County’s floodplain ordinance
ACTION ITEM