FEMA flood zones · New Mexico

Lea County, New Mexico Flood Zone Map

208 flood insurance claims·$931,258 paid·1 federal flood & hurricane disasters

Less than 1% of Lea 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 Lea County, New Mexico. 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 Lea County floods

Flash flooding from severe thunderstorms dominates the flood risk profile in Lea County, New Mexico, accounting for 88 out of 93 total recorded flood events over the last 30 years, alongside 5 general flood events. Meteorological drivers include upper-level disturbances, drylines, cold fronts, and tropical moisture remnants. For example, a slow-moving upper-level low pressure system over a stationary frontal boundary generated repeated rounds of moderate to heavy rainfall causing significant flash flooding on September 2, 2024. Earlier, on May 31, 2024, afternoon thunderstorms merged into a mesoscale convective system that tracked through the region, producing flash flooding alongside damaging winds and large hail.

National Flood Insurance Program records indicate that claims are concentrated in specific zones with distinct payout patterns. Zone A accounts for 115 claims with an average payout of $7,301 and an average recorded water depth of 2 inches. Properties with an unknown zone designation account for 83 claims with an average payout of $4,428 and an average recorded water depth of 2 inches. Zone X accounts for 10 claims with a higher average payout of $15,716 and an average recorded water depth of 2 inches. Homeowners, real estate agents, and journalists should pay the closest attention to properties located within Zone A and unmapped or unknown zones, as these areas carry the highest frequency of historical claims associated with convective storm runoff.

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

Where the flood claims came from

Less than 1% of Lea County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.

115 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 2 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 1992, with 75 claims and $548,002 paid, the year of Thunderstorms, Hail & Flooding.

1979: 3 claims1980: 6 claims1981: 2 claims1984: 18 claims1985: 11 claims1988: 21 claims1990: 3 claims1991: 3 claims1992: 75 claims1994: 3 claims1995: 17 claims1996: 3 claims2000: 1 claims2002: 1 claims2003: 2 claims2004: 5 claims2005: 1 claims2006: 2 claims2007: 1 claims2008: 1 claims2010: 2 claims2014: 2 claims2015: 2 claims2016: 13 claims2018: 1 claims2019: 3 claims2021: 1 claims2022: 2 claims2023: 1 claims2024: 1 claims2026: 1 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

19 NOAA storm reports from Lea County describe what happened, in the words of the forecasters who covered it. Read the New Mexico flood stories →

Federal disasters

7 federal disaster declarations since 1992, 1 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Storms And FloodingSep 15, 2014
Southeast New Mexico Fire ComplexJan 1, 2006
Hurricane Katrina EvacuationAug 29, 2005
Severe Fire ThreatsMay 5, 2000
Thunderstorms, Hail & FloodingMay 22, 1992

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

Recorded flood events

93 since 1996: 88 flash floods and 5 river or area floods.

EventDateDamage
Flash FloodMay 29, 2025—
FloodJul 3, 2025—
Flash FloodMay 31, 2024—
Flash FloodMay 16, 2024—
Flash FloodSep 2, 2024—
Flash FloodOct 2, 2023—
Flash FloodAug 25, 2018$8,000
Flash FloodJun 23, 2017$10,000

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

From the storm reports

Flash Flood · May 29, 2025. A disturbance in the quasi-zonal/northwesterly flow aloft, a dryline, and a cold front moving across the northern Permian Basin allowed for the development of scattered thunderstorms across Southeast New Mexico and West Texas. Thunderstorm coverage continued to increase into the afternoon and evening, and a number of storms became severe. The strongest storm of the day was in Dawson and Howard counties. This storm…

Flood · Jul 3, 2025. Anomalously high moisture associated with the remnants of Tropical Storm Barry encouraged the development of tropical downpours across West Texas and Southeast New Mexico. These downpours resulted in Flash Flooding for portions of the area.

Flash Flood · May 31, 2024. Afternoon severe thunderstorms would develop across eastern New Mexico and merge into an MCS that would track through portions of southeast New Mexico and the Permian Basin late in the evening. An outflow boundary from other thunderstorms would also initiate a few supercells ahead of the MCS. Damaging winds, flash flooding, and large hail were all reported with these thunderstorms.

Flash Flood · May 16, 2024. A positively tilted shortwave trough lifting out of the Four Corners and a stalled cold front over the Permian Basin aided in afternoon thunderstorm development. Numerous thunderstorms formed along and north of the cold front and became an intense squall line with damaging winds.

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 Lea County

If a building in Lea 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.