Blog · October 14, 2026 · Wisconsin
Dunn County Flood Zone Map, Wisconsin: a practical guide
The zone on FEMA's map affects insurance, building and resale near Elk Mound.
Main page: Dunn County, WI GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Caryville? The Dunn County flood zone map tells you whether it sits in a FEMA flood zone, and no account is needed. Covered here for this county: finding the address on FEMA's map, reading the zone codes, and pairing it with the county Beacon site, especially near Baxter.
Getting started with the Dunn County flood zone map
For a more interactive look, open the National Flood Hazard Layer viewer, where zone shading sits over a photo base, which applies near Elk Mound as much as anywhere. Vacant ground around Elk Mound can still be found: zoom in from Interstate 94 and click the spot.
Opening the official parcel viewer
Go first to the Dunn County Beacon site; it covers each tax parcel from Rock Falls to Colfax. Without an address in hand, pan along Interstate 94 and click the parcel itself. For a tract near Caryville, copy the parcel ID from that panel; each records desk in the county asks for it first.
Water near Baxter
Low-lying fields near Ridgeland may not have detailed mapping, so look for water marks and debris lines. Wet ground around Knapp is a separate issue from flood zones; the National Wetlands Inventory mapper shows mapped wetlands.
Next door to Dunn County
Dunn County borders Barron County, Chippewa County, Eau Claire County, Pepin County, and Pierce County; every one of them runs a separate parcel map. Acreage along the edge near Downing may show up in two county records, so open the adjacent map as well. With a lot near Boyceville, our state page lists each neighboring county map for Wisconsin.
Zones on the Dunn County flood zone map
For property near Colfax, A and V zones are Special Flood Hazard Areas, which FEMA defines as a 1% annual chance of flooding. Closer to Colfax, minimal risk is not no risk: according to FEMA, floods happen outside mapped zones too.
Field tips
Most viewers work in a phone browser, which helps when you're standing on land near Elk Mound, though signal can drop in rural spots. A saved image of the lot near Colfax and its lines is a good backup.
Where the recorded documents are
If the land is near Ridgeland, the map is an index, not the title: deeds, plats and easements for parcels in the county are filed with the Register of Deeds. Older tracts around Elk Mound may trace back through a long string of deeds, and a title company can sort it out before a purchase.
Parcel lines plus flood zones
FEMA's map shows zones but not ownership, so pair it with the Dunn County Beacon site to see exactly which lot near Boyceville you're looking at.
Money questions tied to the zone
Out toward Tainter Lake, get the Elevation Certificate if one exists: it records the building's elevation against the base flood. New construction in a floodplain near Elk Mound usually means extra permit review; ask the local floodplain administrator before you plan.
A word on accuracy
For a tract near Baxter, acreage on the record is an estimate; only a licensed surveyor establishes the real lines on the ground. For a parcel near Baxter, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Questions to ask before you buy
With a lot near Downing, request for any Elevation Certificate before closing; getting a quote early avoids surprises.
Places you'll see on the map
Menomonie serves as the county seat, where most land records are kept. Smaller places on the map include Boyceville, Colfax, Downing, and Elk Mound. About 45,794 people call Dunn County home (Census Bureau estimate, 2023) spread over roughly 850 square miles. The county was formed in 1857, and some chains of title near Downing are long.
Legal descriptions in Wisconsin
Wisconsin is laid out under the Public Land Survey System, so rural legal descriptions near Rock Falls cite section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though real sections near Rock Falls vary in size. Write down the legal description for the tract near Downsville when you talk to a surveyor.
Dunn County: common questions
What is a LOMA for land near Colfax?
Out toward Downsville, a Letter of Map Amendment (LOMA) from FEMA can remove a structure on naturally high ground; a surveyor's elevation data supports it.
Is Zone X safe from flooding around Boyceville?
For land near Downsville, shaded X is moderate risk and unshaded X is minimal risk; FEMA notes that a large share of claims come from these areas.
Is flood insurance mandatory near Knapp?
Out toward Menomonie, it's typically required only for structures in high-risk zones with federally backed loans; outside those zones it's your call.
What does an AE label mean for a lot near Downing?
It depends, but an AE zone has a 1% annual chance of flooding and a base flood elevation, which shapes building rules near Rock Falls.
Does the parcel map work on a phone for land near Baxter?
For a home near Boyceville, most viewers run in a mobile browser; screenshots help offline.
Open the official Dunn 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.