Blog · October 17, 2026 · Texas
Reading the Progreso Flood Zone Map for a parcel
Flood zones are set by FEMA, and checking one near Mercedes takes a few minutes.
Main page: Hidalgo County, TX GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Ahead of any purchase around Progreso Lakes, look at the Progreso flood zone map: a mapped flood zone changes insurance, permits and resale. What this town guide covers: finding the address on FEMA's map, reading the zone codes, and pairing it with the appraisal district map, at least around Donna.
Checking the Progreso flood zone map step by step
The official source is FEMA's Flood Map Service Center: search an address around Weslaco, and choose the dynamic map. Rural land in the town Lakes with no street number can still be found: pan from the closest town then click the parcel area around Edcouch.
Getting to the right map
Begin with the appraisal district map; it includes every assessed parcel around Weslaco and Edcouch. For acreage around Donna, enter a street address, an owner's name or a parcel number, and the matching parcel lights up. For a tract near Edcouch, the record panel usually lists the owner of record, assessed acreage, the parcel number and sometimes recent sales.
Legal descriptions in Texas
Older tracts around Mercedes are often described by metes and bounds, which trace the boundary call by call. Platted lots around Weslaco 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 Edcouch before you request a deed or survey.
A short flood checklist
Ask the seller whether the home has flooded for the house near Mercedes; getting a quote early keeps the budget honest.
Field tips
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Weslaco, so load it before you lose signal. A screenshot of the parcel near Progreso Lakes with its ID helps when you meet an owner or agent.
City limits and county records
Progreso sits in Hidalgo County, Texas, which means parcel data comes from the county. In and around Weslaco, the municipality handles matters such as zoning, permits and utilities for lots inside the boundary, but the county runs assessment and recording. Acreage past the town limits near Donna generally falls under county rules, not municipal ones.
Land on the county line
Closer to Donna, Hidalgo County borders Brooks County, Cameron County, Kenedy County, Starr County, and Willacy County; every one of them runs a separate parcel map. Acreage along the edge near Weslaco may show up across two assessors' files, so look at the adjacent map as well. For property near Weslaco, our state page lists each bordering county map across Texas.
Offices that can help
For assessment questions about property around Edcouch go to the appraisal district, which maintains the tax roll. Questions about what you can build around Mercedes need the planning or permitting office, and the answer depends on jurisdiction.
Zones on the Progreso flood zone map
For a tract near Donna, zones beginning with A or V mark the Special Flood Hazard Area, meaning a 1% or greater chance of flooding each year. For a tract near Alamo, shaded Zone X is moderate risk, between the 1% and 0.2% annual chance floods; unshaded X means minimal mapped risk.
Matching the zone to the lot lines
FEMA doesn't draw property lines, so check the appraisal district map too for the outline of the tract near Weslaco.
A quick look at the area
If the land is near Progreso Lakes, edinburg serves as the county seat, home to the main records offices. You'll also find Progreso Lakes, Mercedes, Weslaco, and Donna. Roughly 898,471 people call Hidalgo County home (Census estimate, 2023) across about 1,571 square miles. For property near Edcouch, Hidalgo County dates to 1852, so old deeds can run back a long way. Features like Lower Rio Grande Valley National Wildlife Refuge are easy to spot when you zoom out from Donna.
Water near Alamo
Creeks and ditches near Alamo may not have detailed mapping, so look for water marks and debris lines. Wetlands near Weslaco can limit building even outside a flood zone; check the National Wetlands Inventory mapper for a first look.
Insurance, lenders and building
For a parcel near Weslaco, get the Elevation Certificate if one exists: it records the building's elevation against the base flood. New construction in a floodplain near Alamo usually means extra permit review; ask the local floodplain administrator before you plan.
Questions about the Progreso flood zone map
How do I check the flood zone for an address in Progreso?
Look up the spot near Progreso Lakes in FEMA's National Flood Hazard Layer viewer, and the zone code appears on the map.
How often are flood maps updated around Edcouch?
Zones near Alamo can shift when FEMA updates a panel; your community is notified before changes take effect.
Do I need to worry about flooding in Zone X for land near Progreso Lakes?
Short answer: X zones around Alamo are lower risk, not no risk; FEMA notes that a large share of claims come from these areas.
What is a LOMA near Weslaco?
In most cases, you can ask FEMA for a LOMA if surveyed elevations show the building near Mercedes is above the BFE; it starts with an elevation survey.
How is land described in Texas deeds around Alton?
Around Alamo, deeds use lot and block, metes and bounds or survey descriptions; copy it for any survey or title request.
Open the official Hidalgo 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.