9 flood insurance claims·$110,245 paid·3 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 Grant County, Oklahoma. 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 severe weather events dominates the flood history of Grant County, Oklahoma, accounting for 32 recorded events alongside 13 general flood events over the last 30 years.
Severe storms have repeatedly impacted the area, as seen in May 2019, when an extremely unstable environment brought widespread severe weather and flash flooding on the 20th, following a large line of thunderstorms that produced severe weather on the evening of May 7th into the 8th.
National Flood Insurance Program records show that claims in Grant County are concentrated in designated high-risk areas. Specifically, Zone A properties account for 8 claims with an average payout of $17,338 and an average recorded water depth of 4 inches. An additional single claim in an unknown zone averaged a $6,219 payout with an average recorded water depth of 1 inch. Homeowners, real estate agents, and journalists working with properties located in Zone A should pay the closest attention to these flood risks.
Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.
In flood insurance claims here that reported a flood depth, the average was 4 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 2008, with 2 claims and $45,539 paid, the year of Severe Storms and Flooding and Severe Storms, Tornadoes, and Flooding.
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.
2 NOAA storm reports from Grant County describe what happened, in the words of the forecasters who covered it. Read the Oklahoma flood stories →
32 federal disaster declarations since 1973, 3 of them floods, coastal storms or hurricanes.
| Disaster | Began |
|---|---|
| Severe Winter Storm | Feb 8, 2021 |
| Severe Winter Storms | Feb 8, 2021 |
| Severe Winter Storm | Oct 26, 2020 |
| Severe Storms, Straight-line Winds, Tornadoes, And Flooding | May 7, 2019 |
| Severe Winter Storms And Flooding | Dec 26, 2015 |
| Severe Winter Storms And Flooding | Nov 27, 2015 |
| Severe Storms, Tornadoes, Straight-line Winds, And Flooding | May 5, 2015 |
| Severe Winter Storm And Snowstorm | Feb 24, 2013 |
Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.
45 since 1996: 32 flash floods and 13 river or area floods.
| Event | Date | Damage |
|---|---|---|
| Flood | May 21, 2019 | — |
| Flash Flood | May 20, 2019 | — |
| Flood | May 7, 2019 | — |
| Flash Flood | Oct 6, 2016 | — |
| Flash Flood | Oct 4, 2016 | — |
| Flash Flood | Aug 17, 2009 | — |
| Flood | Sep 13, 2008 | — |
| Flood | Sep 12, 2008 | — |
— = no damage estimate in the record. Source: NOAA Storm Events Database.
Flood · May 21, 2019. An extremely unstable environment led to widespread severe weather across Texas and Oklahoma on the 20th into the morning of the 21st.
Flash Flood · May 20, 2019. An extremely unstable environment led to widespread severe weather across Texas and Oklahoma on the 20th into the morning of the 21st.
Flood · May 7, 2019. Numerous supercell storms were followed by a large line of thunderstorms that produced severe weather on the evening and overnight of the 7th into the 8th.
Flash Flood · Oct 6, 2016. An area of storms formed overnight on the 5th into the morning hours of the 6th in the vicinity of a retreating front across northern Oklahoma.
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 Grant 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.