D’Iberville can experience flooding from both rain storms and tidal events.  There are systems in place to help prevent and minimize damage and disruption from flooding, and some key elements are outlined below:

• A portion of D’Iberville lies within a Special Flood Hazard Area (SFHA), more commonly referred to as the “floodplain”. This SFHA consists of properties within zones AE and VE as delineated on a Flood Insurance Rate Map (FIRM) prepared by FEMA for our community. The FIRM can be viewed at the Public Works Department office, and assistance can be provided in determining if your property is within the SFHA.
• Associated with these zones is a Base Flood Elevation (BFE). This BFE represents the level to which a flood having a 1% chance of being equaled or exceeded in any given year (commonly called the “100-year” flood) will rise.
• The National Flood Insurance Program (NIFP) requires that D’Iberville examine the construction of all new structures, and the improvement, modification, or repair of existing structures that are located within the SFHA. Any new development or additions/renovations to an existing structure within the SFHA will require a “Floodplain Development Permit”
• In an effort to reduce flood insurance rates for our residents, D’Iberville participates in the FEMA / NFIP Community Rating System. Through our floodplain management efforts the town has reached a CRS Class 6, which translates to 10-20%  savings on all flood insurance rates. This discount is set up to occur automatically for all current policies. However, to ensure that you are receiving this discount, ask your insurance agent when renewing or purchasing a flood insurance policy.
• Information about sandbags is available by calling the Public Works Department.

Understanding Flood Stage impacts as they relate to the areas surrounding the Tchoutacabouffa River and Cypress Creek:

• 20′ THERE WILL BE WIDESPREAD FLOODING FROM MISSISSIPPI HIGHWAY 15 EAST TO THE JACKSON COUNTY LINE AND SOUTH TO I-10
• 18′  MAJOR FLOODING WILL OCCUR IN SEVERAL HOMES ALONG THE RIVER FROM ABOUT TWO MILES NORTH OF THE BRIDGE TO I-10
• 17′  AT 17 FEET FLOODING WILL CLOSE MOST ROADS INCLUDING CYPRESS CREEK ROAD BRIDGE ACROSS THE RIVER AT THE HARRISON-JACKSON COUNTY LINE. HOMES BELOW CYPRESS CREEK WEST OF MISSISSIPPI HIGHWAY 67 WILL REMAIN FLOODED AND THE LAMEY BRIDGE ROAD EAST OF THE RIVER WILL REMAIN CLOSED.
• 16′  AT 16′ HOMES BELOW CYPRESS CREEK WEST OF MISSISSIPPI HIGHWAY 67 WILL FLOOD. LAMEY BRIDGE ROAD EAST OF THE RIVER WILL BE CLOSED DUE TO HIGH WATER. RECREATIONAL CMAPS WILL BE INACCESSIBLE.
• 10′  RECREATIONAL CAMPS WILL BE INACCESSIBLE. PROPERTY ALONG LAMEY BRIDGE ROAD WILL BE INUNDATED. THE WATER LEVEL WILL BE AT THE UNDER CARRIAGE OF THE BRIDGE AND STRONG CURRENT WILL FLOW ACROSS THE BRIDGE APPROACHES.
• 8′  ROADS ALONG THE RIVER WILL BE IMPASSABLE. A FEW HOMES WILL BE ISOLATED.
• 7′  THE BANKS WILL OVERFLOW A SHORT DISTANCE UPSTREAM AND DOWNSTREAM OF LAMEY BRIDGE.