Blog · October 14, 2026 · Minnesota
Using the Winona Flood Map
The zone on FEMA's map affects insurance, building and resale near Altura.
Main page: Winona County, MN GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Ahead of any purchase around Stockton, look at the Winona flood map: the zone on that map shapes insurance, building rules and resale. Covered here for Winona: locating a parcel on FEMA's map, reading the zone codes, and pairing it with the Winona County Beacon site.
Where the Winona flood map lives
The official source is FEMA's Flood Map Service Center: type an address near Minnesota City, and pick the FIRMette or map view. Vacant ground around Lewiston can still be found: search the nearest road then click the parcel area.
Where the parcel data lives
Begin with the Winona County Beacon site; it maps every tax parcel in the county, Goodview included. Closer to Lewiston, type a street address, an owner's name or a parcel number, and the matching parcel lights up. For land near Stockton, the parcel card usually lists the owner of record, assessed acreage, a parcel ID and sometimes recent sales.
Land on the county line
Winona County meets Fillmore County, Houston County, Olmsted County, Wabasha County, and Buffalo County, WI; every one of them runs a separate parcel map. A tract near the line by Minnesota City may be split in two county records, so look at the neighboring map before you assume the acreage. For acreage around Altura, the Platbookmapper state page links each bordering county map for Minnesota.
The paper trail behind a parcel
The map is an index, not the title: deeds, plats and easements covering ground around Goodview are filed with the County Recorder. Inherited tracts near Lewiston can trace back through several deeds, so a title company can sort it out before a purchase.
Getting answers from the right desk
Deeds, mortgages and recorded plats for land near Stockton are with the County Recorder, often with an online index. Building or septic questions for a lot near Rollingstone are for the local planning and health departments, depending on whether the land is inside town limits.
Getting your bearings
Winona holds the county offices, where most land records are kept. Other places on the map include Goodview, Minnesota City, Stockton, and Rollingstone, each with its own cluster of lots. Roughly 49,721 people call Winona County home (Census estimate, 2023) across some 626 square miles. Winona County dates to 1854, which matters when you trace an old farm's title.
Where Winona fits in
Winona sits in Winona County, Minnesota, and the county assessor maps its lots. Winona is also the county seat, so deeds and plats are filed in town. If the land is near Altura, the municipality handles matters such as zoning, permits and utilities for lots inside the boundary, but the county runs assessment and recording. Lots just outside the city limits out by Stockton usually follows county rules, not municipal ones.
A short flood checklist
Request whether the home has flooded on the property near Minnesota City; getting a quote early keeps the budget honest.
Before you lean on the lines
Tax maps are drawn for assessment, not surveyed, so a tree line near Altura can sit several feet off the line on screen. If you're looking near Goodview, records update in batches, so a deed recorded last month might lag behind.
Zones on the Winona flood map
For a home near Minnesota City, zones beginning with A or V mark the Special Flood Hazard Area, meaning a 1% or greater chance of flooding each year. If the land is near Rollingstone, shaded Zone X is moderate risk, between the 1% and 0.2% annual chance floods; unshaded X is minimal risk.
Lining it up with the parcel map
FEMA's map shows zones but not ownership, so open the Winona County Beacon site next to confirm you have the right parcel near Altura.
Money questions tied to the zone
For acreage around Goodview, an Elevation Certificate from a surveyor helps: it compares the building to the BFE. Building or adding on near Lewiston in a mapped zone usually means extra permit review; check with the county or town building office early.
Beyond the mapped zones
Creeks and ditches near Rollingstone aren't always studied in detail, so ask neighbors about past flooding. Marshy spots near Lewiston can limit building too; check the National Wetlands Inventory mapper for a first look.
Questions about the Winona flood map
When is flood insurance required near Lewiston?
Good question; lenders generally require it for buildings near Altura in a Special Flood Hazard Area when the loan is federally regulated or insured, in communities that take part in the NFIP.
Is AE a high-risk flood zone around Stockton?
Short answer: an AE zone has a 1% annual chance of flooding and a base flood elevation, so builders near Minnesota City design to that elevation.
Can I see flood zones on the Winona County Beacon site?
A flood layer may appear in the county Beacon site layer list; confirm a lot near Goodview on FEMA's map either way.
What is a LOMA near Minnesota City?
FEMA's LOMA process is the usual route when a building near Lewiston sits above the base flood elevation; it starts with an elevation survey.
Is the parcel map a survey near Altura?
No; boundary questions near Minnesota City need a licensed surveyor, so a fence may sit off the line
Open the official Winona County, MN 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.