FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA...

25
FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA CLARA RIVER WATERSHED DIGITAL FLOOD INSURANCE MAP (DFIRM) UPDATES LEVEE CERTIFICATION FEMA FLOOD INSURANCE STUDY (Santa Clara River) Present to: Santa Clara River Present to: Santa Clara River Watershed Council of Ventura County Watershed Council of Ventura County July 2008 July 2008

Transcript of FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA...

Page 1: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA CLARA

RIVER WATERSHED

•DIGITAL FLOOD INSURANCE MAP (DFIRM) UPDATES

•LEVEE CERTIFICATION

•FEMA FLOOD INSURANCE STUDY (Santa Clara River)

Present to: Santa Clara RiverPresent to: Santa Clara RiverWatershed Council of Ventura CountyWatershed Council of Ventura County

July 2008July 2008

Page 2: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

DIGITAL FLOOD INSURANCE MAP (DFIRM) UPDATES

Page 3: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

Why Update Flood Maps?Why Update Flood Maps?

Federal Requirements Federal Requirements -- National Flood Insurance National Flood Insurance Program:Program:–– National Flood Insurance Act of 1968National Flood Insurance Act of 1968–– Flood Disaster Protection Act of 1973Flood Disaster Protection Act of 1973–– Flood Insurance Reform Act of 1994Flood Insurance Reform Act of 1994

Current accurate flood maps are critical to:Current accurate flood maps are critical to:–– Reduce potential loss of life & property through sound floodplaiReduce potential loss of life & property through sound floodplain n

managementmanagement–– Reduce NFIP & disaster costsReduce NFIP & disaster costs–– Protect natural & beneficial values of floodplainsProtect natural & beneficial values of floodplains

Accurate and up to date flood maps are Accurate and up to date flood maps are vitalvital for the for the successful implementation of successful implementation of allall floodplain management floodplain management strategies.strategies.

Page 4: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

Flood Mapping Inventory Ages:Flood Mapping Inventory Ages:Ventura County vs. NationwideVentura County vs. Nationwide

0

10

20

30

40

50

60

70

80

90

100

Age of FIRMs

Perc

enta

ge

Nationwide 18 11 15 56

Ventura County 0 0 13 87

Less than 5 years From 5 to 10 years From 10 to 15 years More than 15 years

Source of Data: Nationwide data is from MapIX website. Ventura County data is from manual tabulation of FIRMs.

Page 5: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

Ventura County Revised Ventura County Revised Preliminary DFIRMPreliminary DFIRM

Preliminary DFIRM: Released in Sept. Preliminary DFIRM: Released in Sept. 2005, incorporating Calleguas Creek 2005, incorporating Calleguas Creek Watershed FIS .Watershed FIS .Revised Preliminary DFIRM: Released Revised Preliminary DFIRM: Released May 30, 2008 incorporated appeals May 30, 2008 incorporated appeals from local communities and PAL from local communities and PAL processprocess

Page 6: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

DFIRM Adoption Timeline:DFIRM Adoption Timeline:F

irst

Rel

ease

Sep

tem

ber

200

5

Appeals,PAL Process

Rev

ised

Pre

limin

ary

May

30,

200

8

Com

men

t P

erio

d

Exp

ires

Oct

ober

30,

200

8

Let

ter

of F

inal

Det

erm

inat

ion

D

ecem

ber

30,

200

8

Eff

ecti

ve D

ate

Jun

e 30

, 200

9

Community Review & Comment

6 Month Period for LocalStakeholders to Amend Ordinances

Stakeholder Input and Comment

Page 7: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

WhatWhat’’s Next?s Next?

Review and determination of key Review and determination of key levees compliance with FEMA Levee levees compliance with FEMA Levee AccreditationAccreditationProvide comments to FEMA by October Provide comments to FEMA by October 30, 200830, 2008

Page 8: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

Levee CertificationLevee Certification

Page 9: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

FEMA Levee Certification FEMA Levee Certification Requirements:Requirements:

FEMA has long been concerned with leveeFEMA has long been concerned with leveecertificationscertificationsInitiated Levee Policy Committee to developInitiated Levee Policy Committee to develop

recommendations to NFIP recommendations to NFIP beforebefore Katrina in Katrina in 20052005““AccreditationAccreditation”” vs. vs. ““CertificationCertification””FEMA FEMA does notdoes not certify levees. Levee certify levees. Levee owners do.owners do.FEMA FEMA accreditsaccredits certified levees on certified levees on effective effective DFIRMsDFIRMs..

Page 10: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

Code of Federal Regulations Code of Federal Regulations (44 CFR 65.10)(44 CFR 65.10)

For the purpose of NFIP maps, FEMA will For the purpose of NFIP maps, FEMA will onlyonlyrecognize levee systems that recognize levee systems that meetmeet and and continue to meetcontinue to meetdesign, operational and maintenance criteria of the design, operational and maintenance criteria of the Code of Federal Regulations, Title 44, Section 65.10 Code of Federal Regulations, Title 44, Section 65.10 ((44 44 CFR 65.10CFR 65.10), ), which was adopted on August 25, 1986which was adopted on August 25, 1986

Certification Criteria broken Certification Criteria broken down into 6 down into 6 keykey components:components:–– Operations and Maintenance PlanOperations and Maintenance Plan–– FreeboardFreeboard–– ClosuresClosures–– Embankment and foundation Embankment and foundation

stabilitystability–– Interior DrainageInterior Drainage–– Other Design CriteriaOther Design Criteria

Page 11: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

PM 34 PM 34 -- Levee Certification PathsLevee Certification Paths

Page 12: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

Map of District Levee InventoryMap of District Levee Inventory

Page 13: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

District District Levee Levee System System Inventory Inventory List:List:26 Levees26 Levees68 Miles68 Miles

Page 14: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

Provisionally Provisionally Accredited Accredited Levees (PAL)Levees (PAL)

Out of 14 leveesOut of 14 leveesrequested, 6 requested, 6 were were PALedPALed::Non levees in Non levees in Santa Clara Santa Clara River watershed River watershed were were PALedPALed

Page 15: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

Levee Certification Timeline:Levee Certification Timeline:Be

gin

Leve

e Ce

rtifi

catio

nSe

ptem

ber

2006

Subm

itted

Req

uest

for

14

PAL

Lev

ees

Nov

. 27

, 20

07

FEM

A Ap

prov

ed 6

PAL

sM

ay 2

8, 2

008

Prog

ress

Rep

ort

to F

EMA

Nov

. 30

, 20

08

Subm

it Le

vee

Cert

ifica

tioPa

ckag

e to

FEM

AN

ov. 30

, 20

09

PAL Efforts,Consultant ServiceSOW

Consultant Selection,BOS Approval

Prepare LeveeCertification Package

Levee InventoryEfforts

Page 16: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

WhatWhat’’s Next?s Next?

Select ConsultantsSelect ConsultantsBOS ApprovalBOS ApprovalPrepare Levee Certification PackagesPrepare Levee Certification Packages

Page 17: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

Santa Clara RiverSanta Clara River

FEMA Flood Insurance StudyFEMA Flood Insurance Study

Page 18: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

FEMA Flood Insurance FEMA Flood Insurance StudyStudy

Initiated in 2006 under FEMA CTP Initiated in 2006 under FEMA CTP ProgramProgramAll study areas were determined in All study areas were determined in consultation with local communitiesconsultation with local communitiesStudy Reaches: Study Reaches: –– Santa Clara RiverSanta Clara River–– 9 of its tributaries 9 of its tributaries –– totaling 57.11 milestotaling 57.11 miles

Page 19: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

Santa Clara River Flood Insurance Study:Santa Clara River Flood Insurance Study:

Study ReachesStudy Reaches

Name Reach Length

Mile

Santa Clara River 38.33

Orcutt Canyon 1.07

Sespe Creek 5.99

Grimes Canyon Wash 1.93

Pole Creek 2.02

Basolo Ditch 1.00

Hopper Canyon 2.71

Piru Creek 1.57

El Rio Drain 1.19

Patterson Drain 1.30

Total Length 57.11

Page 20: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

Preliminary Comments on Technical Preliminary Comments on Technical Support Data Notebook (TSDN)Support Data Notebook (TSDN)

FEMA released the TSDN on May 8, FEMA released the TSDN on May 8, 20082008Preliminary District and Community Preliminary District and Community review comments sent to FEMA on review comments sent to FEMA on June 30, 2008June 30, 2008Expect COE to send independent Expect COE to send independent review comments soon.review comments soon.

Page 21: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

SCR Flood Insurance Study SCR Flood Insurance Study Timeline:Timeline:

Rel

ease

of

TSD

NM

ay 8

, 200

8

Publ

icat

ion

of N

ews

Rel

ease

Janu

ary

2009

Inco

rpor

ate

into

Rev

ised

Prel

imin

ary

DFI

RM

Dec

embe

r 20

08

Tech

nica

l Rev

iew

Per

iod

Expi

res

Oct

. 30,

200

8

90 D

ay A

ppea

l Per

iod

Begi

nsFe

brua

ry 2

009

Appe

al P

erio

d Ex

pire

sM

ay 2

009

Lett

er o

f Fi

nal

Det

erm

inat

ion

July

200

9

Effe

ctiv

e D

ate

Janu

ary

2010

Stakeholder Input and Comment Appeal/ProtestPeriod

Page 22: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

WhatWhat’’s Next?s Next?

Local communities/stakeholders review the Local communities/stakeholders review the FIS, speak to FEMA with one voiceFIS, speak to FEMA with one voiceAgree upon the MOU,Agree upon the MOU,Consultant Service SOWConsultant Service SOWConsultant review commentsConsultant review commentsby end of Oct. 2008by end of Oct. 2008Public outreach:Public outreach:–– What if levees are not able to be certified?What if levees are not able to be certified?–– What the impacts will be to communities?What the impacts will be to communities?

Page 23: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

WhatWhat’’s Next? s Next? (Continue)(Continue)

The District will place potential improvement The District will place potential improvement projects into the ranking system of the projects into the ranking system of the Integrated Watershed Protection Plan Integrated Watershed Protection Plan (IWPP) for selection of Capital Improvement (IWPP) for selection of Capital Improvement Plan (CIP)Plan (CIP)The District will look for grant from State The District will look for grant from State and Federal sourcesand Federal sourcesThe District will look for participation of local The District will look for participation of local communitiescommunities

Page 24: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

WhatWhat’’s Next? s Next? (Continue)(Continue)

Identification of levee improvement Identification of levee improvement projects will be included in the projects will be included in the ongoing SCR Feasibility Studyongoing SCR Feasibility Study

Page 25: FLOODPLAIN MANAGEMENT EFFORTS IN THE SANTA …wcvc.ventura.org/documents/PDF/SCRW/Flood_Plain...Ventura County vs. Nationwide 0 10 20 30 40 50 60 70 80 90 100 Age of FIRMs Percentage

Questions?Questions?