1 flood insurance claims·$2,525 paid·1 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 Franklin County, Idaho. 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.
In flood insurance claims here that reported a flood depth, the average was 1 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.
2 NOAA storm reports from Franklin County describe what happened, in the words of the forecasters who covered it. Read the Idaho flood stories →
4 federal disaster declarations since 2005, 1 of them floods, coastal storms or hurricanes.
| Disaster | Began |
|---|---|
| Severe Winter Storms And Flooding | Feb 5, 2017 |
| Hurricane Katrina | Aug 29, 2005 |
Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.
7 since 1996: 4 flash floods and 3 river or area floods.
| Event | Date | Damage |
|---|---|---|
| Flash Flood | Jun 1, 2023 | — |
| Flash Flood | Jul 26, 2017 | — |
| Flood | Jan 9, 2017 | — |
| Flash Flood | Aug 9, 2017 | $25,000 |
| Flood | Feb 5, 2017 | $1.7M |
| Flood | Mar 1, 2017 | $77,000 |
| Flash Flood | Jun 1, 2009 | — |
— = no damage estimate in the record. Source: NOAA Storm Events Database.
Flash Flood · Jun 1, 2023. Large hail and flash flooding occurred in the southern mountains.
Flash Flood · Jul 26, 2017. Several instances of flash flooding, strong winds and hail were reported.
Flood · Jan 9, 2017. A long dawn out atmospheric river event brought a variety of impacts to southeast Idaho including extremely heavy mountain snow, valley snow then rain on snow leading to flooding and roads covered with ice in the Snake River Plain, and many mountain avalanches. Many roads were closed for extended periods due to the heavy snow and avalanches. Custer County was declared a disaster area due to the prodigious snow…
Flash Flood · Aug 9, 2017. Heavy rains caused flash flooding in Fairview in Franklin County. Several residents of Fairview reported flooding in their homes with 128 homes also without power for 3 to 4 hours. Power was restored at 7:30 pm MDT.
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 Franklin 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.