HomeMy WebLinkAboutSS3 - Preliminary Flood Rate Maps - FEMA - PowerPointCITY COUNCIL STUDY SESSION
FEMA OPEN PACIFIC COAST STUDY
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FEMA - Open Pacific Coast Stud
Mapping project to produce new Flood Insurance Rate Maps
(FIRM) for the National Flood Insurance Program (NFIP) .
Coastal flooding from the Pacific open coast is a result of
Stillwater levels and Waves.
Stillwater levels are from tides.
fir. � _ •.. �..�:. � a
Waves originate from:
1) wind driven waves and
2) ocean swells traveling from storms
1% Chance event per year.
PA
National Flood Insurance Program
NFIP is voluntary and Newport Beach
currently participates along with approx. 550
other communities in California.
NFIP provides federally backed affordable
flood insurance to ALL participants.
Compliance with NFIP requires the City to
regulate development in the special hazard
flood zones. Don't build below the flood line.
3
National Flood Insurance Program
• Home owners insurance does not cover for
flood damage.
• Federal law requires flood insurance for
federally backed loans ( Conforming - Fannie
Mae or Freddie Mac). Jumbo Loans Too.
• Mortgage refinance or map change would
trigger the requirement for flood insurance.
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Current FIRM
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Proposed FIRM
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Proposed FIRM
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Current FIRM
Proposed FIRM
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Proposed FIRM
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Current FIRM
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Proposed FIRM
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Next Steps
Hire a consultant, Everest International
Consultants Inc., to independently analyze the
data using practical theorems.
File an Appeal with the revised analysis.
17
Schedule
Expect Preliminary FIRM panels distributed in
August 2016.
FEMA to schedule a meeting Sept 2016.
FEMA to publish
the
proposed
changes in the
Federal Register.
(Jan
— March
2017)
Once published, file an Appeal. (Jan — March
2017)
Final maps are effective March 2018
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Reference Information
• www.smartflood.gov Flood Insurance
• http://arcg.is/106feit Pacific Coast Study
• Ying Poon, Everest Inc. City Consultant
• Samir Ghosn — City Staff / Project Manager
sghosn @ newporbeachca.gov
• Seimone Jurjis City Staff
sjurjis@newportbeachca.gov
• Phone: (949) 644-3200
19
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Tf+e Federal Emergency Management
Agency {FEMA) is oondurtirig a coastal
flood study for the C"nTv of Orarige as
part of the Califomia Coastal Analysis
and Mapping Prosect (CCAMP). Results
frorn this Open Pacific Coust IOPC} Study
will produce flood and wave data for the
National Flood Insurance Prograrn (NFIP)
Flood Insurance Study IRS) report and
regulatory Flood Insuranoe Rate Map
(FIRM) panels.
Study Methodology
Coastal flooding from the Pacific open
coag is a res+rlt of local stillwater levels
and waves. Stip (water levels include
the effects of titles, storm surge, and
ri%*T-ine discharges. Waves impacting the
shoreline originate from two sources: 1)
locally -generated wind -driven wrnies and
2) ocean swells travelling ftorn distant
storms. When combined, these stillwater
level and weave components strongly
influence the flood hazards along (Orange
County's open coast slrorehhe.
The OPC Study is guided by FEMA"s
2005 Guidelines for Coastal Flood
Hazard AneWs and Mapping for vie
Pacific coast of the I_lnited States- The
stillwater elevation and wave analyses
rely on a colnhrination of retmnal-scale
hvdrodynarnic models and localized one-
dimensional )i -D) wave analysis transects.
Sural zone processes including wave setup,
wave runup, and o%*rtopping are cornbined
r-1 r-1
A deepwater wave hindlcast was Once the lull 50 -year T1YL tune
produced in collaboration with series was calculated, extrerne value
Ocea"eatlrer Inc. Nenrshore wave analysis of peals TWLs was used to
transformation was perfonned determine the 1-percent-rinriel-
in collaboration will tl, 2 Scripps charice TWLto establish RFEs.
Institution of Oceanography. The
effects ofttte combined regions i -scale
writer levels and wave conditions
reswled in a 54-y*ar linin water level
Questions
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