Canyon County west of Boise in the Treasure Valley is the second most populous county in Idaho and one of the fastest growing in the Pacific Northwest. The Snake and Boise Rivers create flooding risk. The county faces flash flooding from desert thunderstorms wildfire risk from surrounding sage lands and smoke from regional wildfires. Caldwell and Nampa are major agricultural processing centers creating food supply chain emergency planning considerations.
// 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 | Flash Flooding / Wildfire |
| Secondary Hazard | Earthquake |
| FEMA Flood Zone | Low |
| Federally Declared Disasters | 4 |
| Last Major Event | 2021 Wildfire Smoke |
| Event Frequency | Annual |
// Emergency Operations
| Emergency Mgmt Phone | (208) 454-7510 |
| Emergency Shelters | 8 designated facilities |
| Evacuation Routes | I-84 US-20 ID-55 ID-16 |
// County Profile
| County | Canyon County ID |
| State | Idaho (ID) |
| Population | 234 |
| Area | 576 sq miles |
| FEMA Region | Low |
// Major Cities
// Cities in This County
// Other Idaho Counties
Madison County ID
Earthquake / Wildfire
5/10
Low
Bonneville County ID
Earthquake / Wildfire
5/10
Low
Fremont County ID
Earthquake / Wildfire
5/10
Low
Ada County ID
Wildfire / Flash Flooding
5/10
Moderate
Kootenai County ID
Wildfire / Flash Flooding
5/10
Moderate
Butte County ID
Earthquake / Wildfire
5/10
Low