preliminary flood insurance rate maps

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Preliminary Flood Insurance Rate Maps. Preliminary Flood Insurance Rate Maps. What is a Flood Insurance Rate Map (FIRM) and how do I use it?* A FIRM is a map created by the NFIP for floodplain management and insurance purposes. Digital versions of these maps are called DFIRMs . - PowerPoint PPT Presentation

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Preliminary Flood Insurance Rate Maps

Preliminary Flood Insurance Rate Maps

What is a Flood Insurance Rate Map (FIRM) and how do I use it?*A FIRM is a map created by the NFIP for floodplain management and insurance purposes. Digital versions of these maps are called DFIRMs.A FIRM will generally show a community's base flood elevations, flood zones, and floodplain boundaries. As a property owner/renter, this map is used to get a reliable indication of what flood zone they are in. However, maps are constantly being updated due to changes in geography, construction and mitigation activities, and meteorological events. Therefore, for a truly accurate determination, contact an insurance agent or your community floodplain manager.

*Source: Floodsmart.govPreliminary Flood Insurance Rate Maps

FEMA updates community FIRMs ~ 10 yearsContracts with a private sector engineering company to conduct hydraulic/hydrologic modeling (in our case Taylor Engineering)Contractor works with local communities to collect historic flood information/high water marks Current FIRMs dated 2002/2003Based on USGS 5 foot contour mapsOld data (circa 1980s)

Preliminary Flood Insurance Rate Maps

New FIRMs based on county LiDAR data (Light Detection And Ranging)LiDAR is a remote sensing method that uses light in the form of a pulsed laser to measure ranges (variable distances) to the Earth. These light pulsescombined with other data recorded by the airborne system generate precise, three-dimensional information about the shape of the Earth and its surface characteristics. Preliminary Flood Insurance Rate Maps

Preliminary Flood Insurance Rate Maps

Preliminary Flood Insurance Rate Maps

Result is extremely accurate topographic data (LiDAR scanners can generally scan with an accuracy of about 2 centimeters (0.79 inches) at an elevation of 4,000 feet)Reduces mapping effort and increases efficiency and accuracyState-of-the-art scienceParticularly important because of Biggert-Waters NFIP Reform Act of 2012Preliminary maps become effective February 19, 2014

New Flood Insurance Rate Maps

New Flood Insurance Rate Maps

Sheet1Created by Volusia GIS for internal planning purposes only. Old vs New Flood Plain Analysis DRAFT - FOR PLANNING PURPOSES ONLYSUM Col A + Col C12/10/13ABCDPotentially No ChangePotentially Coming OutPotentially Going InParcels having some portion in both the old and the new 100 yr floodzonesParcels any part of which are in the old 100 yr floodzones but not in the new 100 yrfloodzonesParcels any part of which are in the new 100 floodzones but not in the old 100 yr floodzonesParcels any part of which are in the new 100 yr floodzones

CitiesDaytona Beach6356971532511681Daytona Beach Shores236111013843745DeBary7901132651055DeLand885227115Deltona131855228784196Edgewater491526381872Flagler Beach750075Holly Hill6743317092383Lake Helen974239136New Smyrna Beach595125326336584Oak Hill35726164521Orange City20131131Ormond Beach30459539884033Pierson632467Ponce Inlet137244881460Port Orange2958147520865044South Daytona61620618852501Totals - Cities2663276501786744499

Unincorporated County96783148207211750Countywide Total36310107981993956249Parcels any part of which are in the new 100 yr floodzones (FLD_ZONE=Y) but not in the old 100 yr floodzonesfloodzone values A, AE, AH, and VE onlyOld and new floodzone data were merged with parcel data. Parcels with a building value greater than $1000 and any part of which intersected the old or new 100 year floodzones were subset for this analysis. Data subject to modification based on further analysis, use at your own risk.

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