Custer County ID in Idaho faces wildfire / flash flooding risk across its 4,928 square mile area. Challis serves this large remote central Idaho county on the Salmon River. Custer serves as the county seat and regional emergency coordination hub.
// Preparedness Recommendations
- Evacuation routes inland should be identified in advance.
- Store at least 72 hours of food and water.
- Elevate critical belongings above flood level.
- Have backup power ready in case of grid failure.
// Recommended Supplies
Essential gear for power outages, severe weather, and emergency situations in your area.
- Emergency Food Supplies
- Water Filtration & Storage
- Backup Generator
- Solar Backup Power
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// Risk Intelligence
| Threat Score | 4 / 10 Low Risk |
| Primary Hazard | Wildfire / Flash Flooding |
| Secondary Hazard | Winter Storm |
| FEMA Flood Zone | Low |
| Federally Declared Disasters | 5 |
| Last Major Event | 2021 Wildfire |
| Event Frequency | Annual |
// Emergency Operations
| Emergency Mgmt Phone | (208) 879-2360 |
| Emergency Shelters | 2 designated facilities |
| Evacuation Routes | State and US highways |
// County Profile
| County | Custer County ID |
| State | Idaho (ID) |
| Population | 4 |
| Area | 4,928 sq miles |
| FEMA Region | Low |
// Other Idaho Counties
Madison County ID
Earthquake / Wildfire
5/10
Low
Fremont County ID
Earthquake / Wildfire
5/10
Low
Ada County ID
Wildfire / Flash Flooding
5/10
Moderate
Bonneville County ID
Earthquake / Wildfire
5/10
Low
Kootenai County ID
Wildfire / Flash Flooding
5/10
Moderate
Oneida County ID
Earthquake / Wildfire
5/10
Low