Rock County anchored by Janesville in southern Wisconsin faces moderate tornado risk and Rock River flooding. The Rock River has flooded Janesville multiple times. General Motors operated a major assembly plant in Janesville until its controversial closure in 2009. The county serves as a regional hub for southern Wisconsin emergency coordination and borders Illinois creating bi-state emergency coordination requirements.
// 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 | 5 / 10 Moderate Risk |
| Primary Hazard | Tornado / Flash Flooding |
| Secondary Hazard | Rock River Flooding |
| FEMA Flood Zone | Moderate |
| Federally Declared Disasters | 6 |
| Last Major Event | 2018 Flooding |
| Event Frequency | Annual |
// Emergency Operations
| Emergency Mgmt Phone | (608) 757-5559 |
| Emergency Shelters | 8 designated facilities |
| Evacuation Routes | I-90 I-43 US-14 WI-26 |
// County Profile
| County | Rock County WI |
| State | Wisconsin (WI) |
| Population | 162 |
| Area | 721 sq miles |
| FEMA Region | Moderate |
// Major Cities
// Cities in This County
// Other Wisconsin Counties
La Crosse County WI
Tornado / Mississippi River Flooding
6/10
Moderate
Juneau County WI
Tornado / Flash Flooding
5/10
Low
Waushara County WI
Tornado / Flash Flooding
5/10
Low
Buffalo County WI
Tornado / Flash Flooding
5/10
Low
Ozaukee County WI
Tornado / Flash Flooding
5/10
Low
Florence County WI
Winter Storm / Wildfire
5/10
Low