Blog · October 14, 2026 · Wisconsin
Winnebago County Flood Zone Map: checking a property's flood zone
The zone on FEMA's map affects insurance, building and resale near Butte des Morts.
Main page: Winnebago County, WI GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before you buy or build near Butte des Morts, check the Winnebago County flood zone map: a mapped flood zone changes insurance, building rules and resale. What this Winnebago County guide covers: locating a parcel on FEMA's map, reading the zone codes, and pairing it with the Winnebago County parcel viewer.
Where the Winnebago County flood zone map lives
For a tract near Oshkosh, start with FEMA's Flood Map Service Center: enter the street address, and choose the dynamic map. Rural land near Butte des Morts with no street number is still easy to locate: search the nearest road then click the parcel area.
The free map to start with
Your first stop is the Winnebago County parcel viewer; it includes every tax parcel in the county, Fox Crossing included. Out toward Butte des Morts, type a street address, an owner's name or a parcel number, and the matching parcel lights up. If you're looking near Winchester, write down the parcel ID from that panel; each office in the county asks for it first.
Reading A, AE and X
Zone AE comes with a base flood elevation, while plain Zone A does not; builders around Butte des Morts design to it. In and around Winchester, shaded Zone X marks moderate flood hazard, between the 1% and 0.2% annual chance floods; unshaded X means minimal mapped risk.
Who handles what
If the acreage or value on a parcel near Butte des Morts looks off are handled by the county real property listing office, the office behind the parcel record. Questions about what you can build around Omro are for the local planning and health departments, depending on whether the land is inside town limits.
On site with the map
Most viewers work in a phone browser, useful out on a road near Menasha, but coverage can be spotty out of town. A printout of the tract near Menasha keeps working without signal.
Use the county map alongside FEMA
Where a floodplain cuts across acreage near Butte des Morts, the structure's footprint is the key question.
Getting your bearings
Oshkosh holds the county offices, which is where the courthouse records live. Other places on the map include Appleton, Menasha, Neenah, and Omro, where town lots give way to larger tracts. Around 171,735 people call Winnebago County home (Census estimate, 2023) spread over about 435 square miles. The county was formed in 1848, so old deeds can run back a long way around Fox Crossing.
Low spots and local drainage
Low-lying fields near Adella Beach may not have detailed mapping, so ask neighbors about past flooding. Wetlands near Adella Beach can limit building even outside a flood zone; check the National Wetlands Inventory mapper for a first look.
Where the recorded documents are
For a tract near Butte des Morts, the map is an index, not the title: recorded deeds, subdivision plats and easements for parcels in the county sit with the Register of Deeds. Older tracts near Winneconne may trace back through several deeds, so a title company is worth hiring if money is changing hands.
What the map can't tell you
Acreage on the record is an assessed number; just a licensed surveyor establishes the real boundary on land around Fox Crossing. For acreage around Eureka, records update in batches, so a deed recorded last month may not show yet.
A short flood checklist
Request whether the home has flooded on the property near Butte des Morts; an insurance quote early keeps the budget honest.
Insurance, lenders and building
In and around Menasha, get the Elevation Certificate if one exists: it records the building's elevation against the base flood. Remodeling a house in a zone near Butte des Morts usually means extra permit review; call the permitting office before you plan.
Next door to Winnebago County
Winnebago County touches Calumet County, Fond du Lac County, Green Lake County, Outagamie County, and Waupaca County, and each of those keeps its own parcel map. Acreage along the edge near Butte des Morts can be split across two assessors' files, so check the adjacent map before you assume the acreage. For acreage around Waukau, the Platbookmapper state page links every bordering county map for Wisconsin.
Frequently asked
Do I need to worry about flooding in Zone X near Omro?
Around Adella Beach, shaded X is moderate risk and unshaded X is minimal risk; FEMA notes that a large share of claims come from these areas.
Is my property near Butte des Morts in a flood zone?
Short answer: search the address near Neenah on FEMA's Flood Map Service Center; then confirm the parcel on the county viewer.
Do I need flood insurance around Oshkosh?
On ground around Butte des Morts, it's typically required only for structures in high-risk zones with federally backed loans, in communities that take part in the NFIP.
How often are flood maps updated around Butte des Morts?
With a lot near Neenah, FEMA revises flood maps panel by panel as new studies finish; your community is notified before changes take effect.
How do I save a parcel from the viewer for land near Adella Beach?
For a parcel near Eureka, use the print button or a screenshot; downloads of raw data vary by county.
Open the official Winnebago County, WI parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.