Blog · October 14, 2026 · Minnesota
Reading the Oakdale Flood Zone Map for a parcel
The zone on FEMA's map affects insurance, building and resale near Willernie.
Main page: Washington County, MN GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before you buy or build near Landfall, check the Oakdale flood zone map: the zone on that map shapes insurance, building rules and resale. Covered here for Oakdale: finding the address on FEMA's map, decoding A, AE and X, and pairing it with the Washington County ArcGIS parcel map.
Checking the Oakdale flood zone map step by step
Flood zones come from FEMA's Flood Map Service Center: type an address near Lake Elmo, and pick the FIRMette or map view. A tract near Lake Elmo without an address is still easy to locate: search the nearest road and click inside the land.
The free map to start with
Begin with the Washington County ArcGIS parcel map; it covers each assessed parcel around Pine Springs and Mahtomedi. Without an address in hand, zoom in from Lake Elmo and select the outline. For land near Lake Elmo, the parcel card normally shows the owner of record, acreage on the tax roll, the parcel number and in many cases the last transfer.
Oakdale and the county around it
Oakdale is part of Washington County, Minnesota, so its parcels are on the county's map. On ground around Mahtomedi, city or town hall handles things like zoning, permits and utilities for lots inside the boundary, and the county still keeps the parcel and deed records. Lots just outside the city limits toward Willernie usually follows county rules, not municipal ones.
Reading the legal description
Minnesota is laid out under the Public Land Survey System, so deeds around Mahtomedi reference sections and townships. A standard section is about one square mile, roughly 640 acres, and a township holds 36 of them, though sections near Willernie can be irregular. Keep the legal description for land near Lake Elmo when you talk to a surveyor.
Field tips
Most viewers work in a phone browser, handy when you're parked on a road near Pine Springs, but coverage can be spotty out of town. A printout of the tract near Birchwood Village is a good backup.
Offices that can help
Anything recorded against property around Willernie sit in the index kept by the County Recorder, sometimes only in person. Building or septic questions for a lot near Willernie need the planning or permitting office, town or county, depending on location.
Reading A, AE and X
Near Pine Springs, zones beginning with A or V mark the Special Flood Hazard Area, meaning a 1% or greater chance of flooding each year. For land near Landfall, shaded Zone X marks moderate flood hazard, roughly the 100- to 500-year range; plain X, or C on older maps, is minimal risk.
Parcel lines plus flood zones
FEMA doesn't draw property lines, so pair it with the Washington County ArcGIS parcel map for the outline of the tract near Pine Springs.
Beyond the mapped zones
Creeks and ditches near Willernie aren't always studied in detail, so walk the land after rain. Wet ground around Landfall is a separate issue from flood zones; the National Wetlands Inventory mapper shows mapped wetlands.
A quick look at the area
Stillwater serves as the county seat, which is where the courthouse records live. Smaller places on the map include Lake Elmo, Landfall, Pine Springs, and Willernie, each with its own cluster of lots. Roughly 278,936 people live in Washington County (Census estimate, 2023) spread over roughly 385 square miles. Washington County was formed in 1849, and some chains of title near Pine Springs are long. Landmarks such as Afton State Park make handy reference points on the map near Mahtomedi.
When a parcel crosses a boundary
Washington County touches Anoka County, Chisago County, Dakota County, Ramsey County, and Pierce County, WI, and each of those keeps its own parcel map. A tract near the line by Pine Springs may show up across two assessors' files, so check the neighboring map too. Near Mahtomedi, the Platbookmapper state page lists each bordering county map for Minnesota.
What to request from a seller
Request for any Elevation Certificate for the house near Pine Springs; an insurance quote early avoids surprises.
Insurance, lenders and building
With a lot near Mahtomedi, ask for an Elevation Certificate: it records the building's elevation against the base flood. New construction in a floodplain near Lake Elmo usually means extra permit review; call the permitting office before you plan.
Quick answers
How often are flood maps updated near Mahtomedi?
For most people, a new study can move a zone line near Pine Springs; your community is notified before changes take effect.
Is flood insurance mandatory near Birchwood Village?
Generally, for a building near Mahtomedi in an A or V zone with a federally backed or regulated mortgage, it's generally required; outside those zones it's your call.
Is there a flood layer on the parcel viewer near Birchwood Village?
Generally, a flood layer may appear in the Washington County ArcGIS parcel map layer list; confirm a lot near Willernie on FEMA's map either way.
What is a base flood elevation around Birchwood Village?
In most cases, a BFE near Birchwood Village tells builders how high the lowest floor should be; surveyors use it often.
Is the parcel map a survey near Pine Springs?
The map near Landfall is approximate; a survey sets the real corners
Open the official Washington 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.