FEMA flood zones · Texas

Orange County, Texas Flood Zone Map

12,876 flood insurance claims·$1.0B paid·12 federal flood & hurricane disasters

56% of Orange County’s area is in FEMA’s high-risk flood zones, and another 11% in shaded X (mostly the 0.2% floodplain and areas behind levees).

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 Orange 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 Orange County floods

Flash flooding from recurring heavy rain events dominates the local flood profile, accounting for 64 recorded events and 10 deaths over the last 30 years compared to 13 general flood events and 1 death. Recent occurrences illustrate this pattern, including an event on May 16, 2024, caused by an upper trough parked over the region for nearly a week, and an event on April 29, 2024, when thunderstorms produced flooding in areas that had not completely drained from earlier rainfall. Additional flash flooding occurred on June 1, 2024, from an unstable airmass interacting with upper disturbances, and on June 11, 2024, when a frontal boundary stalled along Interstate 10.

National Flood Insurance Program records show significant claim volumes across multiple zones. Zone A accounts for 4,192 claims with an average payout of $94,743 and an average recorded water depth of 8 inches. Shaded and unshaded Zone X areas also experience substantial impacts, with unshaded Zone X recording 3,190 claims averaging $105,673 and 7 inches of water, shaded Zone X recording 2,593 claims averaging $98,386 and 11 inches of water, and general Zone X recording 2,305 claims averaging $92,208 and 5 inches of water. Homeowners and real estate professionals in both high-risk Special Flood Hazard Areas and moderate-to-low risk Zone X areas should pay close attention to these historical payout and water depth averages when evaluating property risk.

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

Where the flood claims came from

58% of Orange County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.

9,978 NFIP claims with a recorded rated flood zone, 1978 to date. The zone is the one FEMA used to rate that policy, which may not match today’s map. Source: OpenFEMA NFIP claims.

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 8 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.

Flood claims, year by year

The worst year was 2017, with 4,395 claims and $466.3M paid, the year of Hurricane Harvey.

1978: 2 claims1979: 176 claims1980: 178 claims1981: 7 claims1982: 120 claims1983: 31 claims1984: 7 claims1985: 4 claims1986: 17 claims1987: 11 claims1988: 2 claims1989: 152 claims1990: 2 claims1991: 59 claims1992: 19 claims1993: 12 claims1994: 122 claims1995: 26 claims1996: 42 claims1997: 4 claims1998: 86 claims1999: 4 claims2000: 8 claims2001: 79 claims2002: 322 claims2003: 50 claims2004: 7 claims2005: 643 claims2006: 146 claims2007: 43 claims2008: 3,416 claims2009: 10 claims2010: 5 claims2011: 5 claims2012: 56 claims2013: 7 claims2014: 36 claims2015: 17 claims2016: 167 claims2017: 4,395 claims2018: 29 claims2019: 2,167 claims2020: 89 claims2021: 19 claims2022: 10 claims2023: 10 claims2024: 31 claims2025: 3 claims2026: 23 claims19801990200020102020

Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.

In their words

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

Federal disasters

31 federal disaster declarations since 1973, 12 of them floods, coastal storms or hurricanes.

DisasterBegan
Hurricane BerylJul 5, 2024
Severe Winter StormFeb 11, 2021
Severe Winter StormsFeb 11, 2021
Hurricane LauraAug 23, 2020
Tropical Storms Marco And LauraAug 23, 2020
Tropical Storm ImeldaSep 17, 2019
Hurricane HarveyAug 23, 2017
Severe Storms, Tornadoes, And FloodingMar 7, 2016

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

Recorded flood events

77 since 1996: 64 flash floods and 13 river or area floods.

EventDateDamage
Flash FloodApr 29, 2024—
Flash FloodJan 25, 2024—
Flash FloodJan 24, 2024—
Flash FloodMay 16, 2024—
Flash FloodJun 11, 2024—
Flash FloodMay 2, 2024—
Flash FloodJun 1, 2024—
Flash FloodMay 8, 2023$5,000

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

From the storm reports

Flash Flood · Apr 29, 2024. A line of thunderstorms moved across Southeast Texas causing another round of heavy rain and severe weather. This produced more flooding in areas that had not completely drained from rain earlier in the month.

Flash Flood · Jan 25, 2024. A slow moving storm system affected the region with multiple days of heavy rain and a few severe storms.

Flash Flood · Jan 24, 2024. A slow moving storm system affected the region with multiple days of heavy rain and a few severe storms.

Flash Flood · May 16, 2024. An upper trough parked over the region for near a week. Short waves kept traversing the base of the trough for the duration of the event causing several days of unsettled weather. Some days produced severe squall lines with numerous reports of damage.

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 Orange County

If a building in Orange 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.