Siem Lake Dam
Significant HazardNot Rated ConditionEmergency Action Plan: Not Required
Location
| State | Missouri |
| County | St. Charles |
| Nearest City | AUGUSTA |
| River/Stream | TR-MISSOURI RIVER |
| Coordinates | 38.58082, -90.94365 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 600 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 135 acre-ft |
| Max Storage | 135 acre-ft |
| Normal Storage | 80 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 106 sq mi |
| Max Discharge | 1,200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | MARVIN SIEM |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |