Welcome - Open House New Castle County Flood Studies May 23, 2 - - PowerPoint PPT Presentation

Welcome - Open House

New Castle County Flood Studies

May 23, 2 2017 New C Castle, e, DE

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This p s prese sentat atio ion l last sts a s about 4 4 minutes Aft fter w watching i it p ple lease le let s staff k f know

• w i

if f you you ha have ve a any y quest stio ions a s and conside ider v visit itin ing o

• ur “stat

ations” s”

• Floodpl

plain ain M Mappin ing S Stat atio ion

• Floodp

dplain M Map ap Appe ppeals an and d Co Comments

• Local

al an and d Co Community St Staff

• Flood I

d Insu surance

Thank you for attending

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Project Extents

• Full St

Study dy in include des : :

• Brandywine-Christina

Watershed AND

• Additional New Castle

County reaches

• This

is me meeting is is focused d

• n N

New Cas w Castle Co County and Incorpo porat ated A d Areas as

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Why was this study done?

• Most

st o

• f the f

floodplai ain st studi dies for t for the hese s streams w were re

• bsole
• lete
• Sig

Significan ant f floodpl plain ac accuracy issues for for re residents i in the hese are reas

• Expensive s

surve veys ys b by residents to pu pursue map c map chan anges

• We beli

lieve ve t the hese p prop roposed maps maps wil will l lessen man many o

• f these

impa impacts an and d de depi pict f flood r risk isk more re a accurately ly

Milestones / Timeline

Discovery Report released March 30, 2012 Project Kick-off May 22, 2014 Present draft products to communities – September 2015 Preliminary Floodplain Maps Released – December 2016 Present Preliminary maps at Open House – May 23, 2017 90 Day appeal period – September - December 2017 Effective Date for Maps – November 2018

Floodplain Accuracy Improved by Using Best Available Topography

Hydrology – Updated to Improve Estimates of Rainfall Runoff

Task 6 - Hydraulics – Updated to Improve Estimates of Flood Heights

Legend

Detailed Limited Detail Approximate Previous Studies Redelineations Coastal Study DFIRM Panel Boundary FEMA Effective Flood Hazard

Study Type Miles Detailed 12 Limited Detail 14 Model-Backed Zone A 63 Redelineation 59 Total 148

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How are updated floodplain maps used?

In local floodplain regulations and building codes To design bridges and other infrastructure in flood prone areas By most lenders to comply with flood insurance purchase requirements By insurance companies in writing flood insurance policies To allow New Castle County residents to better understand flood risk To assist owners of properties in flood-prone areas to protect themselves from flood impacts

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Getting More information about Floodplain Map Changes

• Dela

lawar are’s F Flo lood Pl Plan anning Tool - http://d ://de.g .gov/f /flood

• odplanning

FEMA Risk MAP What Happens Next?

1) Community Comment Period 2) 90-day appeal period 3) Finalization of FIRMs/FIS with additional Quality Review 4) Letter of Final Determination 5) New Maps go into effect (estimate November 2018) Ne New Castle e Count unty, DE: E: From Pr Prel eliminary t to Ef Effect ctive

For More Information

DNREC Points of Contact: Michael Powell – michael.powell@state.de.us Greg Williams – gregory.williams@state.de.us Janice Shute – janice.shute@state.de.us New Castle County Points of Contact: John Gysling – jgysling@nccde.org FEMA Points of Contact: (For Mapping and Engineering) Nikki Roberts – nikki.roberts@fema.dhs.gov (For Flood Insurance issues) Rich Sobota – richard.sobota@fema.dhs.gov

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Thank You for attending!

Pl Please l let u us s know wh w what at y you thin ink, o

• r ask

ask q questions. Also conside ider v visit itin ing t the i informat atio ional al s stat atio ions w s we have s set u up for you for you:

• Insurance

ce

• Floodp

dplain M Map ap Ch Chan anges

• Appe

ppeals an and d corrections t to floodplain maps maps

• Co

County L Lan and U d Use se st staff