LaSalle County IL in Illinois faces tornado / flash flooding risk across its 1,135 square mile area. Ottawa serves this large north-central county with Illinois River flooding and Dresden nuclear zone. LaSalle 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
* We may earn a commission from qualifying purchases.
// Risk Intelligence
| Threat Score | 5 / 10 Low Risk |
| Primary Hazard | Tornado / Flash Flooding |
| Secondary Hazard | Winter Storm |
| FEMA Flood Zone | Low |
| Federally Declared Disasters | 6 |
| Last Major Event | 2019 Flooding |
| Event Frequency | Annual |
// Emergency Operations
| Emergency Mgmt Phone | (815) 434-8200 |
| Emergency Shelters | 2 designated facilities |
| Evacuation Routes | State and US highways |
// County Profile
| County | LaSalle County IL |
| State | Illinois (IL) |
| Population | 110 |
| Area | 1,135 sq miles |
| FEMA Region | Low |
// Other Illinois Counties
// Nearby Infrastructure Risks
Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.
Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.