Blog · October 14, 2026 · Iowa
Jones County Flood Zone Map in Iowa
How to check if a property in Jones County sits in a FEMA flood zone, and what the answer means for a buyer near Morley.
Main page: Jones County, IA GIS & Parcel Viewer (official map link, Jones County facts and neighboring maps).
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A Jones County flood zone map check belongs in the due diligence for any Jones County property, from a house lot in Cascade to farm ground near Monticello. Here's how to read FEMA's map for a Jones County, IA property and match it to the parcel record.
Below are the FEMA links, a plain reading of the zone labels, notes on where water shapes land around Cascade, and short answers to common questions.
Where to see the official Jones County flood zone map
Start at the FEMA Flood Map Service Center and enter the property address in Monticello or anywhere else in the county. Download the FIRM panel FEMA lists as effective for that part of Jones County. On acreage outside Monticello, the National Flood Hazard Layer viewer is easier to use; zoom to the tract close to Martelle and click. Then open the Jones County Beacon site for Jones County to confirm the parcel near Monticello. Laying the county parcel outline beside the FEMA shading shows if a homesite near Martelle sits above or inside the zone.
The county map you'll pair it with
The county's own public map is the Jones County Beacon site, built on Schneider Geospatial's Beacon platform, and it opens without an account for parcels in Cascade and the rest of the county. In the county version, the search page takes an owner, an address or a parcel ID, and each report links back to the map view for the tract close to Cascade. If the official address for the Jones County, IA map ever changes, our directory page carries the current link for Cascade and the rest of the county.
Zone A, AE and X in plain English
For a lot in Monticello, the label matters more than the color: A and V zones are Special Flood Hazard Areas, meaning FEMA estimates a 1-percent annual chance of flooding. Where a Jones County tract shows Zone AE, there's a base flood elevation to compare a building against; in Zone A there isn't one. If a Jones County parcel shows shaded Zone X, it sits in the moderate band between the 100-year and 500-year floods. Unshaded X (or C) on the Jones County panel means minimal risk.
Waterfront parcels near Martelle
The Jones County landscape includes Wapsipinicon River, and that's where flood questions cluster. Lines on those Jones County parcels commonly follow the water, so part of the tract can be mapped as high risk. A low spot on a Jones County tract outside any mapped zone can still flood; FEMA says moderate- and low-risk areas still carry risk.
A short buyer checklist for Anamosa
For a house near Cascade, ask the seller for any elevation certificate on file and the current flood insurance declarations page. Then call an insurance agent who writes policies around Anamosa and get a quote using the zone and the county parcel address.
What a flood zone means for a Jones County buyer
The zone shows up again when a loan on a house near Martelle is underwritten. If a house near Martelle falls inside an A or V zone and carries a federally backed mortgage, flood insurance is mandatory, provided the community near Monticello takes part in the National Flood Insurance Program. For a Jones County home in shaded or unshaded X, insurance is a choice, not a mandate, although a lender in Iowa can still ask for it. When a Jones County homesite is on a rise inside a mapped zone, the landowner can ask FEMA for a Letter of Map Amendment (LOMA), supported by elevation data from a licensed surveyor. Building or filling inside a mapped zone near Monticello has to meet local floodplain rules; the county floodplain administrator can say what applies.
Quick answers for Jones County
How can I check a Jones County, IA flood zone?
Look it up at FEMA's Flood Map Service Center, then match the parcel lines in the Jones County Beacon site; for land near Martelle, a zone starting with A or V is high risk.
Is there a floodplain layer in the Jones County Beacon site?
Check the layer list in the Jones County Beacon site; if Jones County includes a floodplain layer, confirm the zone on FEMA's map anyway.
Is flood insurance required for a Zone X lot in Monticello?
FEMA does not require it for a Zone X lot in Monticello, but coverage is available and some lenders ask for it.
Do I need a permit to build in the floodplain near Monticello?
Building in a Special Flood Hazard Area near Monticello typically needs a floodplain permit and may require elevating the structure, so check with the county floodplain administrator.
Who prepares an elevation certificate for a house in Monticello?
A licensed surveyor or engineer prepares it, and the building office serving Monticello may already have one on file for newer construction.
Open the official Jones County, IA parcel map Jones County 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.