Lake St. Louis Dam
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | Missouri |
| County | St. Charles |
| Nearest City | O'FALLON |
| River/Stream | PERUQUE CREEK |
| Coordinates | 38.80179, -90.76519 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 47 ft |
| Dam Height | 47 ft |
| Dam Length | 900 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 14,650 acre-ft |
| Max Storage | 14,650 acre-ft |
| Normal Storage | 6,300 acre-ft |
| Surface Area | 563 acres |
| Drainage Area | 56 sq mi |
| Max Discharge | 36,700 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | LAKE ST LOUIS COMM ASSOC |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/05/2022 |
| Emergency Action Plan | Yes |