61 flood insurance claims·$292,673 paid·2 federal flood & hurricane disasters
Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.
Shaded areas are FEMA’s mapped flood hazard zones in and around Mesa County, Colorado. 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.
Flash flooding from summer thunderstorms dominates the flood risk profile in Mesa County, based on 70 recorded flash flood events compared to 38 general flood events and one flood-related death over the last 30 years. Monsoonal moisture patterns frequently drive this activity, as demonstrated by events such as the flash flood on June 20, 2024, which involved deep tropical moisture, and the monsoonal pattern that produced flash flooding on July 18, 2025. Additional summer events, including the thunderstorm-driven flash flood on September 4, 2025, illustrate how increased moisture and afternoon instability repeatedly trigger heavy rainfall over the area.
National Flood Insurance Program claims data show payouts occurring across multiple zones, with Zone A recording 30 claims averaging $6,617 and an average recorded water depth of 2 inches. Zone X accounts for 17 claims averaging $8,568 with an average recorded water depth of 2 inches, while Zone X shaded recorded 3 claims with a significantly higher average payout of $11,500 and an average recorded water depth of 1 inch. Zone X unshaded recorded 8 claims with an average payout of $0 and 0 inches of recorded water depth, and Zone unknown recorded 3 claims averaging $1,302 with an average recorded water depth of 1 inch. Homeowners, real estate agents, and journalists working with properties located in mapped flood zones, particularly Zone A and shaded Zone X areas where significant claim payouts have occurred, should pay the closest attention to this multi-zone risk.
Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.
27% of Mesa County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.
41 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.
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.
The worst year was 1983, with 23 claims and $139,858 paid.
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.
44 NOAA storm reports from Mesa County describe what happened, in the words of the forecasters who covered it. Read the Colorado flood stories →
8 federal disaster declarations since 1977, 2 of them floods, coastal storms or hurricanes.
| Disaster | Began |
|---|---|
| Pine Gulch Fire | Aug 19, 2020 |
| Hurricane Katrina Evacuation | Aug 29, 2005 |
| Co - Dierich Fire - 06/10/02 | Jun 9, 2002 |
| Wildfires | Apr 23, 2002 |
| Severe Storms, Mudslides, Landslides & Flooding | Jul 27, 1984 |
| Drought | Jan 29, 1977 |
Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.
108 since 1996: 70 flash floods and 38 river or area floods.
| Event | Date | Damage |
|---|---|---|
| Flash Flood | Jul 18, 2025 | — |
| Flash Flood | Sep 4, 2025 | $20,000 |
| Flash Flood | Jun 4, 2025 | $80,000 |
| Flash Flood | Jun 27, 2024 | — |
| Flash Flood | Jun 20, 2024 | — |
| Flood | Aug 24, 2023 | — |
| Flood | May 18, 2023 | $500 |
| Flood | Aug 17, 2023 | — |
— = no damage estimate in the record. Source: NOAA Storm Events Database.
Flash Flood · Jul 18, 2025. A somewhat classic monsoonal pattern set up in the days leading up to this flash flooding event. A high centered over the Southern Plains and a low off the West Coast, drawing tropical and subtropical moisture northward out of Mexico and the tropical Pacific ocean. In addition, a weak jet streak moving through the flow overhead helped provide some extra energy to afternoon showers and thunderstorms. By the afterno…
Flash Flood · Sep 4, 2025. On September 4th, precipitable water values increased to above normal values, with the 18z Grand Junction sounding showing 0.69 inches of precipitable water. To the west of eastern Utah and western Colorado, an area of weak rotation associated with a passing shortwave helped to provide extra lift. Morning sunshine helped to realized enough instability that, with all other factors present, thunderstorms developed o…
Flash Flood · Jun 4, 2025. Anomalously deep moisture was present across southeast Utah and southwest Colorado on the afternoon of June 4th. Enough sunshine had gotten through during the morning hours to create afternoon instability of 500-1000 J/Kg, more than enough to produce some strong storms. In addition, atmospheric profiles favored heavy rain development and slow moving, training thunderstorms. All these factors combined to lead to a…
Flash Flood · Jun 27, 2024. Deep subtropical moisture increased across eastern Utah and western Colorado and combined with forcing from a strong low pressure trough digging across the Intermountain West to result in widespread severe thunderstorms. These storms produced severe wind gusts, large hail and heavy rain that resulted in flash flooding and debris flows.
National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.
Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.
If a building in Mesa 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.