FEMA flood zones · Wisconsin

Racine County, Wisconsin Flood Zone Map

179 flood insurance claims·$2.6M paid·3 federal flood & hurricane disasters

13% of Racine County’s area is in FEMA’s high-risk flood zones, and another 2% 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 Racine County, Wisconsin. 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 Racine County floods

River and general flooding dominate the historical record in Racine County, accompanied by frequent flash floods and periodic lakeshore flooding along Lake Michigan. Over a thirty-year period, NOAA recorded 33 flood events resulting in one death, alongside 15 flash flood events and 4 lakeshore flood events. Significant impacts are documented in recent history, such as an event in September 2022 when a slow-moving low-pressure system dropped 5 to 9 inches of rain within 24 hours, causing numerous road closures and flooding hundreds of basements. Another heavy rainfall event in May 2020 delivered 3 to 6 inches of rain, triggering river, creek, and lowland flooding alongside road closures and water rescues.

National Flood Insurance Program claims data indicates that property owners in Zone A face the highest frequency of risk, accounting for 134 claims with an average water depth of 22 inches and an average payout of $17,107. However, properties outside designated high-risk zones also experience losses, including Zone X claimants who recorded an average water depth of 3 inches and an average payout of $56,059, and Shaded Zone X properties which recorded an average water depth of 22 inches and an average payout of $37,695. Consequently, homeowners near rivers, low-lying areas, and those located within Zone A and shaded Zone X should pay the closest attention to flood preparedness.

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

Where the flood claims came from

11% of Racine County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.

150 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 20 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 79 claims and $1.0M paid, the year of Severe Storms, Tornadoes, and Flooding.

1978: 1 claims1979: 6 claims1980: 7 claims1982: 2 claims1983: 2 claims1984: 1 claims1985: 1 claims1988: 2 claims1991: 1 claims1993: 2 claims1994: 3 claims1998: 1 claims1999: 4 claims2000: 3 claims2001: 2 claims2004: 2 claims2006: 1 claims2007: 8 claims2008: 79 claims2009: 2 claims2010: 1 claims2013: 3 claims2014: 2 claims2015: 2 claims2017: 22 claims2018: 3 claims2019: 2 claims2020: 6 claims2022: 3 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

30 NOAA storm reports from Racine County describe what happened, in the words of the forecasters who covered it. Read the Wisconsin flood stories →

Federal disasters

16 federal disaster declarations since 1969, 3 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Winter Storm And FloodingJan 10, 2020
Severe Winter Storm And SnowstormJan 31, 2011
Severe Storms, Tornadoes, And FloodingJun 5, 2008
Record Snow And Near Record SnowFeb 5, 2008
Severe Storms And FloodingAug 18, 2007
Hurricane Katrina EvacuationAug 29, 2005
Severe Storms And FloodingMay 7, 2004
SnowDec 11, 2000

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

Recorded flood events

52 since 1996: 15 flash floods, 33 river or area floods and 4 coastal floods or surges.

EventDateDamage
FloodSep 11, 2022$15,000
Lakeshore FloodApr 30, 2020—
FloodApr 29, 2020$1,000
FloodMay 18, 2020$5,000
FloodMay 17, 2020$5,000
Lakeshore FloodJan 11, 2020$4.0M
Flash FloodAug 10, 2020$1,000
FloodMay 1, 2020$1,000

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

From the storm reports

Flood · Sep 11, 2022. An unusually slow moving low pressure system with abundant moisture produced 5-9 inches of rain in a 24 hour period from early morning on September 11th to early morning on September 12th. Numerous roads and hundreds of basements experienced flooding in portions of Waukesha, Milwaukee, and Racine Counties. Some rivers and creeks also flooded.

Lakeshore Flood · Apr 30, 2020. A slow moving low pressure area brought several inches of rain to far eastern WI over a 24-40 hour period. River and lake flooding occurred along with some road flooding.

Flood · Apr 29, 2020. A slow moving low pressure area brought several inches of rain to far eastern WI over a 24-40 hour period. River and lake flooding occurred along with some road flooding.

Flood · May 18, 2020. A slow moving low pressure area brought a 18-24 hour period of moderate to sometimes heavy rainfall. 3 to 6 inches of rain fell over far eastern WI, which resulted in river, creek, and lowland flooding. Numerous roads were flooded and closed. A small number of water rescues were executed. One indirect death occurred when a retaining wall collapsed onto an elderly woman.

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 Racine County

If a building in Racine 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.