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Back Creek Floodplain
SEPTEMBER 2, 2014
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Why are we here Introductions Almost 300 parcels affected by revised flood study of Back Creek Outline
◦ History◦ Study Process◦ Insurance Implications◦ Next Steps
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History Flood Hazard study of Back Creek was performed in 1974
◦ Served as the basis for 1990 FIRM
FEMA Map Modernization – DFIRM 2007
Field surveys identified significant differences between existing land elevations and floodplain elevations of the 2007 DFIRM◦ County reverted to using 1974 elevations rather than the published 2007 &
1990 elevations
1552GROUND
1588 BFE
Flooding wouldbe 36 Ft deep ?
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History – New Maps To Correct Elevations
County asked FEMA to research and correct the error FEMA applied 1974 flood elevations to newer topography Maps provided to county in 2010 No appeals period was provided since there was no new data
1552GROUND
1556 BFE
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History – Public Questions Accuracy
Public questioned accuracy during process of adopting maps County adopted maps to avoid loss of flood insurance countywide Current floodplain maps were effective July 18, 2011
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County and FEMA Conduct New Flood Study
Late 2011 - County contracted Anderson and Associates to perform study◦ $50,000 in grant funding from FEMA through the Cooperating Technical Partners (CTP) Program◦ $8,500 in grant funding from the Virginia Department of Conservation and Recreation
February 2012 - Field/Survey work performed
April 2013 – County portion of study approved by FEMA
During 2013 – Further study by FEMA to delineate additional approximated floodplain areas
February 2014 - Preliminary maps produced by FEMA
Study OverviewNew Detailed Engineering Analysis – Augusta County
Back Creek
New Approximate Engineering Analysis - FEMA
Back Creek (Upstream Section) Mills Creek Orebank Creek Toms Branch North Fork Back Creek South Fork Back Creek
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Study Results
County reviewed mapping at the locations cited by citizens during public meetings
New model appears to agree with anecdotal evidence provided
United Methodist Church Area
2011 2014
2800 Block – Mt Torrey Rd
2011 2014
1700 Block – Mt Torrey Road
2011 2014
Intersection Howardsville Rd – Mt Torrey Road2011 2014
Preliminary to Effective FIRMs
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Prelim
inary
1st n
ewsp
aper
not
ice
2nd ne
wspap
er n
otice
90 days
LFD
Appeal Period
7 days 6 months
CCO Mee
ting
May 20, 2014
? ?
2-3 months
Appea
l res
olutio
n and
DFIRM fin
aliza
tion
Feder
al Reg
ister
30 days
30-d
ay
com
men
t per
iod
30 days
Effect
ive
General Timeline
Feb 28, 2014
July 30, 2014August 7, 2014
November 4, 2014
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Appeals Process The maps may be appealed in four ways:
◦ Corrections to street names◦ Technical appeals to the data used for the map◦ Scientific appeals to the methodology used◦ Appeals based on physical changes to the floodplain
Appeals are to be submitted to Augusta County
Two copies of the appeal should be submitted
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Flood Insurance Implications Biggert-Waters Flood Insurance Reform Act of 2012 Homeowner Flood Insurance Affordability Act of 2014 Newly identified in Floodplain Newly identified to be outside Floodplain
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Next Steps FEMA will respond to any appeals
FEMA will issue Letter of Final Determination
Maps will have effective date of 6 months from the Letter of Final Determination
County must adopt new maps by the effective date◦ Advertisement / property owner notification◦ Public Hearing
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Helpful links View the floodplain information https://msc.fema.gov Flood risk awareness and how to get flood insurance https://www.floodsmart.gov http://riskmap3.com/action
Interactive floodplain maps
www.tinyurl.com/backcreek2014
Questions?
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