Blog · October 14, 2026 · Texas
Irion County Flood Zone Map: checking a property's flood zone
Flood zones are set by FEMA, and checking one near Sherwood takes a few minutes.
Main page: Irion County, TX GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Mertzon? A quick look at the Irion County flood zone map shows whether the lot falls inside a mapped floodplain, and it costs nothing to check. In this county guide: locating a parcel on FEMA's map, reading the zone codes, and matching it with the county parcel viewer, at least around Barnhart.
Checking the Irion County flood zone map step by step
If you'd rather pan and zoom, use the National Flood Hazard Layer viewer, where zone shading sits over a photo base, for land near Sherwood included. Vacant ground around Sherwood is still easy to locate: pan from the closest town and click the spot.
Opening the official parcel viewer
Property in and around Mertzon are published on the Irion County parcel viewer, free to use and open without a login. When a rural tract has no street number, follow the nearest road on the aerial and click the parcel itself, for land near Barnhart included. On ground around Barnhart, copy the parcel ID from that panel; every clerk in the county asks for it first.
On site with the map
Most viewers work in a phone browser, which helps when you're standing on land near Mertzon, so load it before you lose signal. A screenshot of the parcel near Mertzon with its ID helps when you meet an owner or agent.
Zones on the Irion County flood zone map
For a parcel near Sherwood, A and V zones mark the Special Flood Hazard Area, which FEMA defines as a 1% annual chance of flooding. For a parcel near Barnhart, a shaded X area is moderate risk, roughly the 100- to 500-year range; plain X, or C on older maps, means minimal mapped risk.
Water near Sherwood
Low-lying fields near Barnhart aren't always studied in detail, so walk the land after rain. Marshy spots near Sherwood can limit building too; check the National Wetlands Inventory mapper for a first look.
Reading the legal description
Rural deeds near Mertzon commonly use metes-and-bounds descriptions, a series of courses and distances from a starting point. Platted lots around Sherwood usually use lot and block from a recorded plat instead, making them easier to find. Copy the legal description from the record for the parcel near Sherwood when you talk to a surveyor.
Lining it up with the parcel map
If only part of a parcel near Mertzon is shaded, the location of the house or building pad decides a lot.
Recorded documents worth pulling
On ground around Mertzon, the map is an index, not the title: deeds, plats and easements for parcels in the county are filed with the County Clerk. For a home near Barnhart, bring the book and page shown in the record panel so staff can find the deed fast.
Neighboring parcel maps
Irion County borders Crockett County, Reagan County, Schleicher County, and Tom Green County, and each of those keeps its own parcel map. A tract near the line by Mertzon may show up across two assessors' files, so open the neighboring map before you assume the acreage. In and around Barnhart, our state page links every bordering county map for Texas.
Irion County in a few facts
Mertzon serves as the county seat, which is where the courthouse records live. Other places on the map include Barnhart and Sherwood, each with its own cluster of lots. About 1,549 people live in Irion County (Census estimate, 2023) across some 1,052 square miles. The county was organized in 1889, and some chains of title near Mertzon are long.
Which office to call
If the acreage or value on a parcel near Sherwood looks off go to the appraisal district, the office behind the parcel record. Building or septic questions for a lot near Mertzon go to planning, building or health offices, town or county, depending on location.
What to request from a seller
On ground around Mertzon, ask the listing agent for any Elevation Certificate before closing; an insurance quote early avoids surprises.
What a flood zone means for a buyer
For acreage around Mertzon, an Elevation Certificate from a surveyor helps: it records the building's elevation against the base flood. Building or adding on near Sherwood in a mapped zone often needs a floodplain permit; call the permitting office before you plan.
What the map can't tell you
For property near Sherwood, listed acreage is an assessed number; just a licensed surveyor sets the real lines on the ground. For property near Mertzon, owner names and values update on a schedule, so a deed recorded last month can take weeks to appear.
Quick answers
Do I need flood insurance in Irion County?
It depends, but for a building near Mertzon in an A or V zone with a federally backed or regulated mortgage, it's generally required; elsewhere it's optional.
What is a base flood elevation near Sherwood?
The BFE is printed in AE zones on FEMA's map; surveyors near Sherwood use it often.
How often are flood maps updated around Barnhart?
A new study can move a zone line near Mertzon; your community is notified before changes take effect.
How do I check the flood zone for an address near Sherwood?
Generally, look up the spot near Sherwood in FEMA's National Flood Hazard Layer viewer; no account is needed.
Is the parcel map a survey around Mertzon?
No; boundary questions near Mertzon need a licensed surveyor.
Open the official Irion County, TX 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.