// Risk Intelligence
| Risk Score | 7 / 10 High |
| Facility Type | 🌊 Major Dam / Flood Control |
| Operator / Branch | US Army Corps of Engineers |
| Host County | St. Louis County MO |
| Nearest City | Washington DC |
| Primary Risk Radius | 10 miles |
| Secondary Risk Radius | 50 miles |
// Strategic Significance
The Meramec River south of St. Louis floods repeatedly with the 2015 and 2016 floods causing major damage in St. Louis County. The 2015 flood was the worst Meramec River flood in recorded history with water reaching 46 feet at Arnold MO. Numerous communities along the Meramec lack adequate levee protection.
// Civilian Impact Assessment
St. Louis County communities along the Meramec River including Arnold Fenton and Valley Park face repeated flooding. The 2015 flood forced 2,000 evacuations and caused $170 million in damage.
// Evacuation & Shelter Guidance
I-44, I-270, Missouri Route 141. St. Louis County Emergency Management coordinates Meramec River flood protocols with multiple municipal emergency managers.