Public safety is our top priority at Charlotte Mecklenburg Storm Water Services. To prevent tragedies caused by flooding, we partner with the Federal Emergency Management Agency (FEMA) to assess and map flood risks in response to any changes in land development, changes in rainfall statistics and improvements in topographic data. The process takes several years. For remapping, Mecklenburg County has been divided into four geographical areas called “phases.” New floodplain maps are being developed and adopted starting with Phase 1 and ending with Phase 4. The map below shows the four phases. Additional information below explains the purpose of floodplain maps and the reason maps are being updated.
Phase 2 floodplain maps went into effect September 2, 2015.
Property owners and community stakeholders were included in the map revision process, attending public meetings and providing input for consideration. Mortgage and leinholders for properties in the floodplain may require property owners to purchase flood insurance. Newly mapped properties may be eligible for discounts for initial flood insurance policies (see FEMA website for details).
|Draft Phase 3 floodplain maps now available|
Phase 3 covers Charlotte-Mecklenburg's northeastern watersheds - the areas shown in yellow on the map below. New floodplain maps for these watersheds are now available in draft form.
See the Phase 3 draft floodplain maps
Public meetings about the draft Phase 3 floodplain maps for northeastern Charlotte-Mecklenburg were held in September, 2014. Currently, the Phase 3 draft maps are undergoing local and federal reviews. That process will continue through most of 2015. Phase 3 maps are not expected to take effect until 2016.
Public meetings are part of the
Frequently asked questions about updating Charlotte-Mecklenburg's floodplain maps
The remapping of Charlotte-Mecklenburg’s regulated floodplains follows the standards, methods and sequence of steps required by the Federal Emergency Management Agency (FEMA). The sequence is:
FEMA sets the dates that the maps enter the Preliminary and Effective stages. Once the Preliminary date is reached, higher Base Flood Elevations (if any) can be used for local building regulation. On the Effective date, the revised maps must be used for flood insurance purposes. The time between the Preliminary and Effective dates is usually 12 to 18 months.
Phase 1 – South-central and southeast Charlotte-Mecklenburg (shown on map below in tan
Took effect on February 19, 2014. The revised floodplain maps are now official. They are being used for both flood insurance and building regulation purposes. Floodplain maps for Little Hope Creek required additional revision and the corrected maps took effect February 24th, 2015. Floodplain regulations for Charlotte, Matthews, Mint Hill and Pineville have been updated to reflect both the new flood hazard data and the date the new floodplain maps take effect.
Phase 2 – Western Charlotte-Mecklenburg (shown on map below in green)
Became effective September 2, 2015. Phase 2 covers the western watersheds, shown on the map
in green. Please note that Phase 2 floodplain remapping includes parts
of the Catawba River but does not include most lakefront property along
Lake Norman or Lake Wylie. Floodplain regulations
for Charlotte, Cornelius, Davidson, Huntersville and Pineville have been updated to
reflect both the new flood hazard data and the date the new floodplain
maps take effect.
Phase 3 – Northeast Charlotte-Mecklenburg (shown on map below in yellow)
Now in Draft status – available for public review.Northeast Mecklenburg watersheds, shown on the map
above in yellow, are the third phase of Charlotte-Mecklenburg’s
floodplain remapping effort. Draft versions of these floodplain maps are
Draft floodplain maps for Phase 3
the public meetings and the required local and federal reviews, new
floodplain maps for Phase 3 are expected to become effective in 2016.
Phase 4 – Lower Lake Wylie and all of Lake Norman (shown on map below in gray)
Now in Development status – beginning to draw new lines
The where, when and what of new floodplain maps