FEMA flood zones · Illinois

Bond County, Illinois Flood Zone Map

6 flood insurance claims·$282,175 paid

Less than 1% of Bond 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 Bond 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 Bond County floods

Flash flooding from intense summer thunderstorms and heavy rainfall dominates the flood risk in Bond County, Illinois. Over the last 30 years, the NOAA Storm Events Database records 19 flash flood events compared to 2 general flood events. This severe weather is frequently driven by back-building storm systems and training thunderstorms capable of producing high hourly rainfall rates and multi-inch totals over several hours. Recent events include a flash flood on July 26, 2022, caused by training thunderstorms with rainfall rates exceeding two inches per hour, and a heavy rain event on August 12, 2019, driven by high precipitable water values and storms persisting over the same locations for over five hours.

National Flood Insurance Program records indicate that historical claims are concentrated in specific hazard areas. Properties in Zone A have accounted for 4 claims with an average payout of $70,250 and an average recorded water depth of 0 inches. Single claims are also recorded for Zone UNKNOWN, averaging a $2,074 payout with an average recorded water depth of 1 inch, and Zone X, averaging a $0 payout with an average recorded water depth of 0 inches. Homeowners and real estate agents with properties located within Zone A should pay the closest attention to this flood risk given the historical payout data associated with these higher-risk zones.

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 1 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 4 claims and $280,101 paid.

1979: 1 claims2019: 4 claims2021: 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

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

Federal disasters

7 federal disaster declarations since 2002.

DisasterBegan
Severe Storms, Straight-line Winds, And TornadoesDec 10, 2021
Severe Winter Storm And SnowstormJan 31, 2011
Severe Winter StormNov 30, 2006
Hurricane Katrina EvacuationAug 29, 2005
Severe Storms, Tornadoes And FloodingApr 21, 2002

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

Recorded flood events

21 since 1996: 19 flash floods and 2 river or area floods.

EventDateDamage
Flash FloodJul 20, 2025$30,000
Flash FloodJul 26, 2022—
Flash FloodAug 12, 2019—
Flash FloodDec 28, 2015—
Flash FloodJun 8, 2015—
Flash FloodApr 18, 2013—
Flash FloodJun 26, 2011—
Flash FloodJun 19, 2011—

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

From the storm reports

Flash Flood · Jul 20, 2025. During the evening of July 20th, an MCS rode into south-central Illinois. Though the system as a whole kept pushing southeast during the evening, back-building and additional development along its northwestern edge caused it to rain constantly over Fayette County for hours. Between about 7:45 pm CDT and midnight, central Fayette County received 8.7 inches of rain of a total 13.5 inches. This resulted in flash floo…

Flash Flood · Jul 26, 2022. During the early morning of Tuesday, July 26th, 2022, a complex of training thunderstorms set up roughly along the I-70 corridor in Missouri and I-64 corridor in Illinois. Several rounds of thunderstorms with rainfall rates exceeding 2in/hr affected this area, including the St. Louis metropolitan area, through the early hours of July 26th and into the morning commute. Upwards of 11 of rain fell over the course of…

Flash Flood · Aug 12, 2019. Elevated convection developed in response to low level moisture convergence just north of a slowly retreating warm front. With very high precipitable water values in excess of 2 inches, this created very heavy rainfall rates as the storms trained over the same locations for over 5 hours. This caused flash flooding in a number of locations.

Flash Flood · Dec 28, 2015. A prolonged period of rainfall occurred from the early morning hours of December 26th to the evening of December 28th. The heaviest rainfall occurred in a 50 to 75 mile wide swath from southwest Missouri through the Greater St. Louis Metropolitan Area and into central Illinois. Three day rainfall totals within this swath ranged from 6 to 12 inches, with lighter amounts extending both northwest and southeast to t…

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 Bond County

If a building in Bond 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.