Blog · October 14, 2026 · Iowa
Marshalltown Flood Zone Map, Iowa: a practical guide
Flood zones are set by FEMA, and checking one near Melbourne takes a few minutes.
Main page: Marshall County, IA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Melbourne? Checking the Marshalltown flood zone map reveals whether it sits in a FEMA flood zone, and it costs nothing to check. Covered here for Marshalltown: locating a parcel on FEMA's map, reading the zone codes, and pairing it with the Marshall County Beacon site.
The Marshalltown flood zone map: start here
Flood zones come from FEMA's Flood Map Service Center: search an address around Ferguson, and pick the FIRMette or map view. Vacant ground around Melbourne can still be found: pan from the closest town then click the parcel area.
Getting to the right map
Your first stop is the Marshall County Beacon site; it maps every tax parcel in the county, Laurel included. When a rural tract has no street number, follow US Route 30 on the aerial and click the parcel itself. Closer to Melbourne, the record panel normally shows the owner of record, assessed acreage, the parcel number and sometimes recent sales.
Where Marshalltown fits in
Marshalltown sits in Marshall County, Iowa, which means parcel data comes from the county. As the county seat, Marshalltown hosts the courthouse, handy when you need recorded documents. Near Laurel, the municipality handles matters such as zoning, permits and utilities inside its limits, and the county still keeps the parcel and deed records. Acreage past the town limits out by Melbourne often falls under county rules, not municipal ones.
Getting answers from the right desk
Deeds, mortgages and recorded plats for land near Haverhill come from the County Recorder, sometimes only in person. Zoning, permits and septic questions near Le Grand are for the local planning and health departments, town or county, depending on location.
A short flood checklist
Request about past flood claims for the house near Le Grand; getting a quote early avoids surprises.
Sections, lots and bearings
Iowa uses the Public Land Survey System, which means a tract near Ferguson is described by section, township and range. A standard section is about one square mile, roughly 640 acres, and a township holds 36 of them, though real sections near Ferguson vary in size. Copy the legal description from the record for the parcel near Albion before you request a deed or survey.
Reading A, AE and X
If the land is near Albion, 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 Le Grand, 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 doesn't draw property lines, so open the Marshall County Beacon site next to confirm you have the right parcel near Le Grand.
Insurance, lenders and building
If a building sits in a Special Flood Hazard Area and the loan is federally backed or regulated, flood insurance is generally required in communities in the NFIP, which applies near Ferguson as much as anywhere. New construction in a floodplain near Laurel usually means extra permit review; check with the county or town building office early.
Low spots and local drainage
Small streams around Le Grand may not have detailed mapping, so look for water marks and debris lines. Wet ground around Le Grand is a separate issue from flood zones; the National Wetlands Inventory mapper shows mapped wetlands.
The paper trail behind a parcel
Before you sign anything, request the recorded deed through the County Recorder; the parcel map near Melbourne only summarizes it. Older tracts around Le Grand may go back through many deeds, so a title company earns its fee if money is changing hands.
On site with the map
The parcel map usually runs in a mobile browser, handy when you're parked on a road near Haverhill, but coverage can be spotty out of town. A saved image of the lot near Le Grand and its lines is a good backup.
When a parcel crosses a boundary
Marshall County meets Grundy County, Hardin County, Jasper County, Poweshiek County, and Story County, all with their own assessor records. A tract near the line by Albion may show up across two assessors' files, so look at the neighboring map too. For land near Ferguson, the Platbookmapper state page lists every bordering county map across Iowa.
Marshalltown: common questions
How can I tell if a house near Ferguson is in a flood zone?
It depends, but search the address near Le Grand on FEMA's Flood Map Service Center; then confirm the parcel on the county viewer.
What is a LOMA around Le Grand?
In most cases, you can ask FEMA for a LOMA if surveyed elevations show the building near Laurel is above the BFE, and lenders accept the result.
Does the county parcel map show flood zones for land near Melbourne?
Good question; a flood layer may appear in the Marshall County Beacon site layer list; confirm a lot near Melbourne on FEMA's map either way.
Do I need to worry about flooding in Zone X near Le Grand?
Zone X near Laurel means moderate (shaded) or minimal (unshaded) mapped risk, and floods still happen outside high-risk zones.
Does the parcel map work on a phone for land near Laurel?
Most viewers run in a mobile browser; load it before you lose coverage near Le Grand.
Open the official Marshall County, IA 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.