FEMA flood zones · Texas

Crockett County, Texas Flood Zone Map

3 flood insurance claims·$26,662 paid·1 federal flood & hurricane disasters

Less than 1% of Crockett County’s area is in FEMA’s high-risk flood zones.

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 Crockett 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 Crockett County floods

Flash flooding driven by severe thunderstorms and heavy rainfall dominates the flood risk profile in Crockett County, based on 31 recorded flash flood events compared to 5 general flood events and 1 tropical depression over the last 30 years.

Recent weather events illustrate this localized hazard. In September 2018, slow-moving troughs and abundant Gulf moisture produced devastating flash flooding, including a wall of water that hit the town of Sonora along the Dry Devil's Draw. Another significant heavy rain event occurred in October 2018, when upper-level disturbances interacting with Gulf moisture caused major flooding along regional rivers and creeks.

National Flood Insurance Program records show limited historical claims in the county, with two claims in Zone A averaging a payout of $13,331 and an average recorded water depth of 3 inches. One claim was recorded in Zone X with an average payout of $0 and an average recorded water depth of 0 inches. Property owners located in designated Special Flood Hazard Areas, such as Zone A near waterways and flash-flood-prone draws, should pay the closest attention to local flood risks.

Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.

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 3 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

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

Federal disasters

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

DisasterBegan
Severe Winter StormFeb 11, 2021
Severe Winter StormsFeb 11, 2021
WildfiresAug 30, 2011
WildfiresApr 6, 2011
WildfiresMar 14, 2008
Extreme Wildfire ThreatNov 27, 2005
Hurricane RitaSep 23, 2005
Hurricane Katrina EvacuationAug 29, 2005

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

Recorded flood events

37 since 1996: 31 flash floods and 5 river or area floods.

EventDateDamage
Flash FloodMay 7, 2023—
Flash FloodOct 16, 2022—
Flash FloodSep 21, 2018—
FloodOct 9, 2018—
FloodSep 7, 2018—
FloodJun 27, 2016—
Flash FloodMay 17, 2015—
Flash FloodMay 16, 2015—

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

From the storm reports

Flash Flood · May 7, 2023. The combination of a well defined surface dryline, weak upper level disturbances, and strong to extreme instability, resulted in scattered afternoon and evening severe thunderstorms across portions of the Big Country and Concho Valley. The severe storms were mainly north and east of a Rotan to Abilene to San Angelo to Cross Plains line. The vertical wind shear was strong enough for most of the storms to become sup…

Flash Flood · Oct 16, 2022. Thunderstorms produced localized flash flooding in Crockett County.

Flash Flood · Sep 21, 2018. A slow moving upper and surface trough, an abundance of Gulf of Mexico moisture, and remnants of moisture from a dying Pacific tropical cyclone resulted in devastating flash flooding in part of West Central Texas. The town of Sonora along the Dry Devil's Draw was hardest hit by a wall of water and subsequent flash flooding.

Flood · Oct 9, 2018. Upper level disturbances interacted with plenty of gulf moisture to produce rounds of very heavy rain. In fact, very heavy rainfall moved north into Kimble County from Edwards County, up the South Llano River watershed area during the early morning hours of Monday, October 8. ||About eight to 12 inches of rain fell on already saturated ground, causing major flooding over the banks of Cedar Creek and the South Ll…

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 Crockett County

If a building in Crockett 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.