Storm Water Services is updating local floodplain maps. 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.
|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. 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 new floodplain maps are now official. They are being used for both flood
insurance and building regulation purposes. However, new maps for Little Hope Creek are being revised again in 2014.
Phase 2 – Western Charlotte-Mecklenburg (shown on map below in green)
Now in Preliminary status – one step away from becoming effective. Expected to become effective in 2015.
Phase 3 – Northeast Charlotte-Mecklenburg (shown on map below in yellow)
Now in Draft status – available for public review
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