Blog · October 14, 2026 · Texas
Bastrop County Flood Zone Map, Texas
FEMA's free flood maps and the Bastrop County parcel viewer, used together for property near Mustang Ridge.
Main page: Bastrop County, TX GIS & Parcel Viewer (official map link, Bastrop County facts and neighboring maps).
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Before you buy a house in Mustang Ridge, add on to a barn near Smithville, or price a lot along the creek bottoms near Camp Swift, check the Bastrop County flood zone map. FEMA's free Flood Map Service Center and the Bastrop County parcel viewer answer it together.
The sections below go from the FEMA search to the Bastrop County parcel record, then cover insurance, permits and map changes near Smithville.
Look up the Bastrop County flood zone map step by step
Open the FEMA Flood Map Service Center and type a county street address, say one in Smithville. Search returns the effective FIRM panel for the spot in Bastrop County, plus any pending changes FEMA has posted. On acreage outside Smithville, FEMA's National Flood Hazard Layer viewer draws the zones over aerial imagery and reports the zone wherever you click near Smithville. Then open the Bastrop County parcel viewer for Bastrop County to confirm the parcel near Smithville. The Bastrop County record gives the parcel number and legal description that an insurer or lender near Smithville may ask for.
Opening the Bastrop County parcel viewer
The county's own public map is the Bastrop County parcel viewer, and it opens without an account for parcels in Mustang Ridge and the rest of the county. Click any Bastrop County parcel near Mustang Ridge to open its record: owner, parcel ID and assessed acreage are generally listed. Bookmark our Bastrop County page too; it tracks the official Texas link if it moves and lists the maps around Mustang Ridge.
What the flood zone letters mean
Any Bastrop County parcel shaded as Zone A, AE, AH or AO sits in what FEMA calls a Special Flood Hazard Area, land with a 1-percent chance of flooding in any given year (the base or 100-year flood). Where a Bastrop County tract lists Zone AE, there's a base flood elevation to compare a building against; in Zone A there isn't one. If a Bastrop County parcel lists shaded Zone X, it falls between the base flood and the 500-year flood. Unshaded X (or C) on the Bastrop County panel means minimal risk.
Unmapped creeks in Bastrop County
Small streams and ditches near Smithville may not be studied in detail, which is why it's worth walking the ground after a heavy rain.
A short buyer checklist for Smithville
Request any past flood claims history for a Bastrop County property before closing; it tells you more than the map alone. Then call an insurance agent who writes policies around Smithville and get a quote using the zone and the county parcel address.
Floodways and restudies near Smithville
The FIRM panel for Bastrop County carries an effective date; if it's old, ask the county floodplain office if new maps for land near Smithville are in progress. Floodways, shown as hatched areas on some panels, are the channel and nearby land that must stay open, and building there near Mustang Ridge faces the strictest rules.
Flood insurance and building rules in Bastrop County
Lenders watch the zone closely on Bastrop County properties. When a structure near Mustang Ridge falls inside an A or V zone and carries a federally backed mortgage, the lender must require flood coverage, provided the community near Smithville takes part in the National Flood Insurance Program. For a Bastrop County home in shaded or unshaded X, coverage is optional, although some lenders require it anyway. When a county homesite is on a rise inside a mapped zone, a Letter of Map Amendment request is the formal route; a surveyor near Mustang Ridge can supply the elevation data. Building or filling inside a mapped zone near Smithville has to meet local floodplain rules, so call the county or the town office in Smithville before work starts.
Bastrop County flood zones questions
Who prepares an elevation certificate for a house in Elgin?
A licensed land surveyor or engineer prepares it, and the building office serving Elgin may already have one on file for newer construction.
Do I need a permit to build in the floodplain near Elgin?
Building in a Special Flood Hazard Area near Elgin generally needs a floodplain permit and may require elevating the structure, so check with the county floodplain administrator.
What is a base flood elevation for a Bastrop County property?
Near Smithville, it's the projected water surface in the base flood; elevation certificates in Bastrop County are measured against it.
Is Zone AE near Smithville high risk?
Zone AE on a lot in Elgin is a mapped 100-year floodplain with a base flood elevation, so mandatory insurance rules apply to federally backed mortgages.
Is flood insurance required for a Zone X lot in Elgin?
For a Zone X house near Smithville, federal rules do not require flood insurance; buying it is still a choice worth pricing.
Open the official Bastrop County, TX parcel map Bastrop 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.