Lake St. Gallen Dam
Lake St. Gallen Dam is an earth dam located in Warren County, Missouri, built in 1979. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Lake St. Gallen Dam
The primary purpose of Lake St. Gallen Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Innsbrook Owners Association (private). It impounds the Trib To Charrette Creek near Innsbrook.
The dam stands 57 feet tall and stretches 410 feet across, creates a reservoir covering 30 acres, has a maximum storage capacity of 1,087 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1979, the structure is 47 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 10/27/2022.
At 57 feet, this dam is taller than 95% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Missouri dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Missouri |
| County | Warren |
| Nearest City | Innsbrook |
| River/Stream | Trib To Charrette Creek |
| Coordinates | 38.75040, -91.03008 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 57 ft |
| Dam Height | 57 ft |
| Dam Length | 410 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 1,087 acre-ft |
| Max Storage | 1,087 acre-ft |
| Normal Storage | 694 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 656 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | INNSBROOK owners association |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/27/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO31919 |
| Federal ID | MO31919 |
| More Info | State Dam Safety Program |