FEMA flood zones · Indiana

Randolph County, Indiana Flood Zone Map

25 flood insurance claims·$143,302 paid·2 federal flood & hurricane disasters

6% of Randolph 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 Randolph County, Indiana. 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 Randolph County floods

Flash flooding from slow-moving or backbuilding summer thunderstorms dominates the flood risk profile in Randolph County, which recorded 26 flash flood events and 20 general flood events over the last 30 years according to the NOAA Storm Events Database.

Severe storms frequently produce localized heavy rainfall. For example, slow-moving thunderstorms caused isolated flash flooding on June 12, 2021, when some areas received up to 3 inches of rain. Heavy rainfall also accompanied strong low-pressure systems and severe thunderstorms on March 28, 2020, and the remnants of Tropical Storm Gordon produced 1 to 4 inches of rain on September 7, 2018.

National Flood Insurance Program records show that flood claims and payouts occur across multiple zones. High-risk Zone A accounts for 13 claims with an average payout of $12,127 and an average recorded water depth of 1 inch. Meanwhile, moderate-to-low risk Zone X recorded 8 claims averaging $4408 with an average water depth of 2 inches, and Zone X_UNSHADED recorded 3 claims averaging $1650 with an average water depth of 2 inches. One claim in an unknown zone averaged $6060 with an average water depth of 3 inches. Homeowners in mapped high-risk Zone A areas and properties located in lower-risk Zone X areas that experience localized stormwater accumulation should pay the closest attention to these risks.

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 2 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 2026, with 3 claims and $23,722 paid.

1987: 1 claims1992: 1 claims1993: 2 claims1995: 1 claims1996: 1 claims1997: 1 claims1998: 1 claims2003: 2 claims2005: 1 claims2008: 1 claims2010: 1 claims2011: 1 claims2013: 1 claims2017: 1 claims2019: 2 claims2020: 1 claims2021: 1 claims2025: 2 claims2026: 3 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

11 NOAA storm reports from Randolph County describe what happened, in the words of the forecasters who covered it. Read the Indiana flood stories →

Federal disasters

18 federal disaster declarations since 1974, 2 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Winter StormJan 23, 2026
Severe Storms, Flooding, And TornadoesMay 30, 2008
SnowFeb 12, 2007
Hurricane Katrina EvacuationAug 29, 2005
Severe Winter Storms And FloodingJan 1, 2005
SnowDec 21, 2004
Severe Storms, Tornadoes, And FloodingAug 26, 2003
Severe Storms, Tornadoes, And FloodingJul 4, 2003

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

Recorded flood events

46 since 1996: 26 flash floods and 20 river or area floods.

EventDateDamage
Flash FloodJun 12, 2021$5,000
Flash FloodMar 28, 2020$10,000
Flash FloodSep 7, 2018$1,000
FloodNov 5, 2017$3,000
Flash FloodJun 19, 2014$1,000
Flash FloodDec 22, 2013$5,000
FloodAug 4, 2012$500
Flash FloodMay 27, 2010$500

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

From the storm reports

Flash Flood · Jun 12, 2021. During the late evening hours of June 12th, a series of thunderstorms slowly moved through central Indiana from the north. An outflow boundary in eastern Marion county led to additional thunderstorm growth north of Indianapolis that eventually would bring damaging winds and large hail to portions of Indianapolis and western Hancock County. Slow storm motions and backbuilding led to some areas to receive up to 3 i…

Flash Flood · Mar 28, 2020. On March 28th, a strong low pressure system brought 3 rounds of severe thunderstorms to central Indiana. The first round brought widespread 1 to 1.75 inch hail to much of the area with the second event bringing additional large hail and flash flooding. A third round during the late evening and overnight brought additional heavy rain and damaging wind gusts. A microburst caused an intense area of significant da…

Flash Flood · Sep 7, 2018. The remnants of Tropical Storm Gordon interacted with a surface front to produce widespread heavy rain across much of central Indiana. The moisture content of the atmosphere was very high. Precipitable water, a measure of moisture content in the atmosphere, is normally around 1 inch for early September in Indiana. Precipitable water amounts approached 2 inches for parts of the area on September 8th. Heavy rainfall…

Flood · Nov 5, 2017. Waves of low pressure moved along a strong cold front on November 5th, generating strong to severe thunderstorms during the afternoon and evening hours. Strong 850mb winds brought up plenty of moisture for the storms to work with and the storms produced some tornadoes, damaging winds, large hail, and flooding.

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 Randolph County

If a building in Randolph 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.