FEMA flood zones · Illinois

Moultrie County, Illinois Flood Zone Map

20 flood insurance claims·$120,662 paid

8% of Moultrie County’s area is in FEMA’s high-risk flood zones.

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 Moultrie County, Illinois. 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.

How Moultrie County floods

Flash floods from severe thunderstorms dominate the local flood history, accounting for 23 out of 30 recorded flood events over the last 30 years, alongside 7 standard flood events. Heavy rainfall systems driven by low pressure boundaries frequently impact the area, such as a multi-day storm system that brought heavy rainfall and flooding on May 4, 2017. Another severe weather event occurred on January 11, 2020, when waves of low pressure along a stationary front dropped 3 to 6 inches of rain across a corridor including Moultrie County, resulting in local flooding.

Homeowners and real estate agents should pay the closest attention to properties located in designated Zone A, which recorded 8 NFIP claims with an average payout of $20,817 and an average recorded water depth of 24 inches. Properties in unshaded Zone X areas also warrant attention, having logged 5 claims averaging $7,834 with an average water depth of 10 inches. Additionally, properties with unknown zone designations accounted for 6 claims averaging $2,019 with an average water depth of 2 inches.

Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.

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 12 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 2008, with 6 claims and $97,150 paid.

1978: 1 claims1979: 2 claims1982: 2 claims1985: 1 claims1997: 1 claims2002: 1 claims2005: 2 claims2008: 6 claims2009: 1 claims2013: 2 claims2018: 1 claims1980199020002010

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

12 NOAA storm reports from Moultrie County describe what happened, in the words of the forecasters who covered it. Read the Illinois flood stories →

Federal disasters

10 federal disaster declarations since 1990.

DisasterBegan
Severe Storms And FloodingJun 29, 2023
Severe Storms, Straight-line Winds, And TornadoesDec 10, 2021
Severe Winter Storm And SnowstormJan 31, 2011
Severe Storms And FloodingJul 19, 2010
Hurricane Katrina EvacuationAug 29, 2005
Severe Storms, Tornadoes And FloodingApr 21, 2002
Winter Storm 1/1/99Jan 1, 1999
Severe Ice StormFeb 14, 1990

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

Recorded flood events

30 since 1996: 23 flash floods and 7 river or area floods.

EventDateDamage
FloodJan 11, 2020—
Flash FloodJun 20, 2019$50,000
FloodApr 29, 2017—
Flash FloodApr 29, 2017—
FloodMay 4, 2017—
Flash FloodMay 4, 2017—
FloodMay 1, 2017—
Flash FloodApr 26, 2016—

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

From the storm reports

Flood · Jan 11, 2020. Several waves of low pressure tracking along a nearly stationary frontal boundary brought periods of locally heavy rainfall to central Illinois on January 10th and 11th. The front gradually shifted eastward into the Ohio River Valley and brought an end to the rain by the evening of January 11th. Storm total rainfall was heaviest in a corridor including Shelby, Moultrie, Douglas, Coles, Cumberland, Effingham, and…

Flash Flood · Jun 20, 2019. A wave of low pressure tracking along a nearly stationary frontal boundary triggered several clusters of strong to severe thunderstorms across central Illinois during the afternoon and early evening of June 19th. Two weak tornadoes briefly touched down producing minor damage; one in northeast Christian County and one in central Moultrie County. Other thunderstorm cells produced strong wind gusts and minor damage…

Flood · Apr 29, 2017. Heavy rainfall impacted central and southeast Illinois from April 29th into April 30th...creating flash flooding, which led to widespread areal flooding. Periods of thunderstorms with very high rainfall rates dropped 2.00 to 6.50 inches of rain across much of central and southeast Illinois from April 29th into early on May 1st. This rainfall, occurring on top of already saturated soils, created flash flooding in a…

Flash Flood · Apr 29, 2017. Low pressure tracking along a stationary frontal boundary near the I-70 corridor brought widespread strong to severe thunderstorms to much of central and southeast Illinois during the late afternoon and evening of April 29th. A tornado briefly touched down in an open field northeast of Alexander in Morgan County. Elsewhere, thunderstorms packed winds of 60-70mph and caused significant wind damage. A downburst w…

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 Moultrie County

If a building in Moultrie 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.