FEMA flood zones · Texas

Stonewall County, Texas Flood Zone Map

1 flood insurance claims·$5,952 paid·1 federal flood & hurricane disasters

FEMA’s digital flood map shows no high- or moderate-risk zones in Stonewall County. That can mean the area was never studied in detail or has no digital map, not that it can’t flood; the county floodplain administrator can say which.

Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.

Coastal high risk (V, VE)FloodwayHigh risk (A, AE)Moderate (X, 500-year)Minimal (X)Undetermined (D)

Shaded areas are FEMA’s mapped flood hazard zones in and around Stonewall County, Texas. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.

How deep the water got

outlet80″ door12″24″36″48″60″72″84″

In flood insurance claims here that reported a flood depth, the average was 1 inches.

Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.

Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.

In their words

3 NOAA storm reports from Stonewall County describe what happened, in the words of the forecasters who covered it. Read the Texas flood stories →

Federal disasters

16 federal disaster declarations since 1993, 1 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Winter StormFeb 11, 2021
Severe Winter StormsFeb 11, 2021
Severe Winter Storms, Tornadoes, Straight-line Winds, And FloodingDec 26, 2015
Cooper Mountain Ranch FireApr 11, 2011
Swenson FireApr 6, 2011
WildfiresApr 6, 2011
WildfiresMar 14, 2008
Extreme Wildfire ThreatNov 27, 2005

Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.

Recorded flood events

8 since 1996: 5 flash floods and 2 river or area floods.

EventDateDamage
Flash FloodMay 25, 2025—
Flash FloodApr 27, 2024—
FloodMay 20, 2019—
Tropical DepressionAug 17, 2007—
Flash FloodJun 11, 2004—
Flash FloodJul 6, 2002—
FloodMar 23, 2000—

— = no damage estimate in the record. Source: NOAA Storm Events Database.

From the storm reports

Flash Flood · May 25, 2025. A short wave trough moving out of northern Mexico into the Southern High Plains brought widespread and intense convection to the South Plains and Rolling Plains of West Texas on the afternoon and evening of the 25th. This short wave trough brought the necessary large scale ascent that was missing the past several days to create the more widespread activity on the 25th. At the same time, a slow moving cold front wa…

Flash Flood · Apr 27, 2024. Late on the evening of the 27th, severe wind gusts were occurring in the extreme southwestern Texas Panhandle while flash flooding was transpiring in Stonewall County. A dryline which had mixed east of the Rolling Plains during the daytime had retreated back into the southeastern Rolling Plains. Very unstable air east of the dryline and convergence along the dryline allowed intense thunderstorms to develop. These…

Flood · May 20, 2019. The afternoon of the 20th was the beginning of an extended period of several weeks of severe weather for the South Plains and Rolling Plains of West Texas. A high risk of severe weather was issued by the Storm Prediction Center in the morning for the afternoon of the 20th. Southwest flow aloft with an embedded mid level jet streak contributed to an ample amount of lift across the region. Numerous thunderstorms dev…

Tropical Depression · Aug 17, 2007. Tropical Depression Erin, previously a tropical storm during landfall on the middle Texas coast early on the 16th, brought large amounts of rain to portions of west Texas. This rain fell primarily on the 17th and 18th of August on the South Plains and Rolling Plains before the system moved northeastward over Oklahoma. ||Erin maintained a defined circulation well after making landfall, and even strengthened signifi…

National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.

The zones you’ll see on the map

Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.

Cross-section of a river floodplainDiagram: a river valley. The floodway is the channel and the land beside it; the 1%-annual-chance flood surface (the base flood elevation) covers the valley floor as zone A or AE; a narrow band higher up is shaded X, the 0.2% floodplain; higher ground is X.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXAEFloodwayAEX
  1. A / AE Inside the 1%-a-year floodplain: about a 26% chance of flooding over a 30-year mortgage. AE has a mapped base flood elevation; plain A does not.
  2. Floodway The channel and the land beside it that has to be kept clear enough to carry the flood. Building here is tightly limited.
  3. X shaded The 0.2% (500-year) floodplain, plus some levee-protected and very shallow flood areas.
  4. X Outside both lines. No federal requirement to insure, which is not the same as no risk.

Every flood zone code explained →

Flood insurance in Stonewall County

If a building in Stonewall County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.

Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.