Morrisville, North Carolina
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Floodplain Map Updates
Page Updated: September 13, 2017


The North Carolina Flood Mapping Program (NCFMP), in concert with the Federal Emergency Management Agency's (FEMA) National Flood Insurance Program (NFIP), is in the process of updating the Flood Insurance Rate Maps (FIRMs) in Wake County.  You may be more familiar with hearing these maps being referred to as flood maps, flood inundation maps or floodplain maps.  These FIRMs show studied areas that are at risk of flooding during large rainfall events (1% and 0.2% Annual Chance Floods).  The Special Flood Hazard Area (SFHA) is the 1% annual chance flood.  The last time the maps were update for this area was in 2006. The National Flood Insurance Reform Act of 1994 requires FEMA to assess the need to revise and update all floodplain areas and flood hazard zones at least once every five years.  The first step in updating the FIRMs is to publish the revised FIRMs as preliminary.  The preliminary FIRMs were recently published by the NCFMP in April 2015.

The SFHA used to be referred to as the 100-year floodplain, but that terminology can be misleading by making it sound as though it will only flood once every 100 years.  This is not the case.  We can, and have, experienced multiple 1% annual-chance-floods in a given year.

How does this affect me?
Take a look at the preliminary maps available below. The changes are mixed; there are some areas of the Town that show an increase in the floodplain, and some areas that show a decrease.  The base flood elevation (BFE) increases in some areas, and decreases in other areas.  If you are in a SFHA, you should purchase flood insurance.  See the guidance documents below for more information about flood insurance.

Property owners in or within 100 feet of a SFHA were mailed a postcard inviting them to the public information meeting back in October of 2015.  The presentation from that meeting can be downloaded from the Guidance Documents section below. 

Changes to the flood maps may impact your need to obtain flood insurance or effect a rate change.  Please discuss flood insurance decisions with your insurance agent.

View Preliminary Maps
You can view/download both the effective (current) and preliminary maps by going to
Click on the Flood Risk Information System map image, select Wake County, zoom into your property.  This will show the effective map.  To view the preliminary map click in the top right corner on the button that says Effective, and select Preliminary.  Using the search tool, enter your address.  Note: this may only get you to the general vicinity of your property.

Which Buildings Have Been Added To/Removed From the Floodplain?
We have created an online map that shows the changes from the current effective maps.  This shows where buildings have been added or removed from the floodplain; and areas that have increases or decreases in the floodplain or floodway.

Submit Comments On the Preliminary Maps:
You can see the current (effective) and new (preliminary) flood maps side by side and submit comments specific to your parcel through the Wake County mapping application link above.  You can provide feedback for a specific parcel by selecting "on the map" from the Give Feedback options.

Guidance Documents
October 15, 2015 Public Meeting Presentation
Map Changes & Flood Insurance: What Property Owners Need to Know
Appeals & Comments Fact Sheet
Comments Petition Form
Appeals Petition Form
Expanded Appeals Fact Sheet
Homeowner Flood Insurance Affordability Act of 2014 Fact Sheet
Best Available Data - Using Preliminary FIRMs
Limited Detail Study Methods
Other NCFMP Fact Sheets

Anticipated Map Update Schedule*
Date Description
October 2015
Start Federal Register Process
 October 15, 2015
Public Open House Meeting, 4:00pm-8:00pm, Bond Park Community Center, 801 High House Rd., Cary
July 5, 2016
Start 90-day appeal period 
 October 2, 2016
End 90-day appeal period
 Fall 2017  Publish Revised Preliminary FIRMs* (revised based on comments & appeals)
 Winter 2017
 30-day comment period on revised Prelim. FIRMs*
 Spring 2018      FEMA issues Letter of Final Determination*
 Summer 2018
Town amends UDO Section 5.6 Floodplain Management*
 Summer 2018
 FIRMs become effective*

*The schedule and information on this page is based on best available information at the time it is updated and is subject to change.  Please check back often for changes/updates.

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