FEMA flood zones · Wisconsin

Oneida County, Wisconsin Flood Zone Map

4 flood insurance claims·$14,773 paid·3 federal flood & hurricane disasters

13% of Oneida 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 Oneida 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 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.

In their words

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

Federal disasters

9 federal disaster declarations since 1976, 3 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Storms, Tornadoes, Straight-line Winds, And FloodingJul 18, 2019
Hurricane Katrina EvacuationAug 29, 2005
Severe Storms, Tornadoes, And FloodingMay 26, 2000
Flood-07/20/99Jul 4, 1999
Severe Storms & FloodingJul 10, 1984
Winds, Hail & RainAug 5, 1977
DroughtJun 17, 1976

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

Recorded flood events

12 since 1996: 3 flash floods and 9 river or area floods.

EventDateDamage
FloodOct 17, 2016—
FloodMar 31, 2005—
Flash FloodJul 26, 2003—
FloodApr 18, 2002$16,200
Flash FloodApr 11, 2002—
FloodSep 6, 2001—
FloodJul 9, 2000—
FloodJul 8, 2000—

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

From the storm reports

Flood · Oct 17, 2016. Thunderstorms, that moved along a frontal boundary, produced heavy rainfall across northern Wisconsin on the evening of October 17th and isolated large hail after midnight. The heaviest rain fell in a swath from far northern Lincoln County to Florence County. Some of the heaviest rain fell in Rhinelander (Oneida County) where there was minor street flooding. The rainfall total of 4.64 inches at Rhinelander, most o…

Flood · Mar 31, 2005. Well above normal temperatures during the last week of the month resulted in considerable snowmelt. Rainfall combined with runoff from melted snow, causing minor flooding on several rivers.

Flash Flood · Jul 26, 2003. A thunderstorm complex moved across Oneida county during the morning. The storms dumped 6 inches of rain around Pelican Lake causing flash flooding.

Flood · Apr 18, 2002. A warm front across Wisconsin lifted north during the afternoon and evening. Moist and very unstable air south of the front led to the development of severe thunderstorms. The storms produced 5 tornadoes, damaging straight line winds, large hail and some flooding.Brief tornado touchdowns in Lincoln county, Oneida county and Marathon county snapped numerous trees. Marathon county had hundreds of trees downed and…

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 Oneida County

If a building in Oneida 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.