FEMA flood zones · Mississippi

Issaquena County, Mississippi Flood Zone Map

127 flood insurance claims·$1.9M paid·7 federal flood & hurricane disasters

88% of Issaquena County’s area is in FEMA’s high-risk flood zones, and another 8% in shaded X (mostly the 0.2% floodplain and areas behind levees).

Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.

Coastal high risk (V, VE)FloodwayHigh risk (A, AE)Moderate (X, 500-year)Minimal (X)Undetermined (D)

Shaded areas are FEMA’s mapped flood hazard zones in and around Issaquena County, Mississippi. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.

Where the flood claims came from

6% of Issaquena County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.

98 NFIP claims with a recorded rated flood zone, 1978 to date. The zone is the one FEMA used to rate that policy, which may not match today’s map. Source: OpenFEMA NFIP claims.

How deep the water got

outlet80″ door12″24″36″48″60″72″84″

In flood insurance claims here that reported a flood depth, the average was 8 inches.

Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.

Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.

Flood claims, year by year

The worst year was 2019, with 19 claims and $395,074 paid, the year of Severe Storms, Straight-line Winds, Tornadoes, and Flooding.

1979: 11 claims1982: 1 claims1983: 16 claims1984: 1 claims1985: 1 claims1991: 12 claims1993: 3 claims1994: 4 claims1995: 4 claims1996: 1 claims1997: 13 claims1998: 2 claims2002: 3 claims2005: 1 claims2008: 8 claims2009: 5 claims2010: 1 claims2011: 14 claims2016: 2 claims2018: 4 claims2019: 19 claims2025: 1 claims19801990200020102020

Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.

In their words

10 NOAA storm reports from Issaquena County describe what happened, in the words of the forecasters who covered it. Read the Mississippi flood stories →

Federal disasters

27 federal disaster declarations since 1971, 7 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Winter StormJan 23, 2026
Severe Storms, Straight-line Winds, Tornadoes, And FloodingMar 14, 2025
Hurricane IdaAug 28, 2021
Hurricane DeltaOct 7, 2020
Severe Storms, Flooding, And MudslidesFeb 10, 2020
Severe Storms, Straight-line Winds, Tornadoes, And FloodingFeb 22, 2019
Severe Storms And FloodingMar 9, 2016
FloodingMay 3, 2011

Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.

Recorded flood events

13 since 1996: 8 flash floods and 2 river or area floods.

EventDateDamage
Flash FloodAug 8, 2017$9,000
Tropical StormAug 29, 2012$25,000
FloodMay 6, 2011$1.0M
Flash FloodMay 15, 2008$25,000
Flash FloodMay 15, 2008$200,000
Flash FloodAug 12, 2008$65,000
Flash FloodOct 16, 2006$300,000
Hurricane (Typhoon)Aug 29, 2005$200,000

— = no damage estimate in the record. Source: NOAA Storm Events Database.

From the storm reports

Flash Flood · Aug 8, 2017. A stalled front lingered across the ArkLaMiss region, which allowed for several upper level disturbances to move through. This, combined with a rather moist airmass, led to several days of flash flooding across the area. The most significant flash flooding occurred on August 9th.

Tropical Storm · Aug 29, 2012. Tropical Depression Nine formed in the Atlantic, east of the Lesser Antilles, on the morning of August 21, 2012. Twelve hours later, Tropical Depression Nine had strengthened into Tropical Storm Isaac. Isaac continued to track through the eastern Caribbean Sea and Florida Straits while maintaining high end tropical storm strength. Just before noon central time on the 28th, Isaac was located about 75 miles south-so…

Flood · May 6, 2011. The flood of 2011 had its birth around the end of March when heavy rainfall of 2 to 5 inches fell across Arkansas, Southeast Missouri, and the Ohio River Valley. The Mississippi River crested well above flood stage at Cairo around the middle of March and at flood stage at Vicksburg around the end of the month. The river receded until early April when 2 to 5 inches of rain fell over North Kentucky and the Ohio Ri…

Flash Flood · May 15, 2008. Multiple rounds of storms evolved over the region starting late on the 14th and lasted through the 15th. This produced several areas of heavy rainfall across the forecast area. The region that experienced the greatest rainfall was across Northeast Louisiana, and West Central Mississippi where 5 to 8 inches fell. The other area of heavy rain was along Interstate 20, through Central and East Central Mississippi. Her…

National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.

The zones you’ll see on the map

Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.

Cross-section of a river floodplainDiagram: a river valley. The floodway is the channel and the land beside it; the 1%-annual-chance flood surface (the base flood elevation) covers the valley floor as zone A or AE; a narrow band higher up is shaded X, the 0.2% floodplain; higher ground is X.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXAEFloodwayAEX
  1. A / AE Inside the 1%-a-year floodplain: about a 26% chance of flooding over a 30-year mortgage. AE has a mapped base flood elevation; plain A does not.
  2. Floodway The channel and the land beside it that has to be kept clear enough to carry the flood. Building here is tightly limited.
  3. X shaded The 0.2% (500-year) floodplain, plus some levee-protected and very shallow flood areas.
  4. X Outside both lines. No federal requirement to insure, which is not the same as no risk.

Every flood zone code explained →

Flood insurance in Issaquena County

If a building in Issaquena County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.

Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.