Glenwilfern Lake Dam
Glenwilfern Lake Dam is an earth dam located in Jefferson County, Missouri, built in 1953. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Glenwilfern Lake Dam
The primary purpose of Glenwilfern Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Paul Larson (private). It impounds the Tributary To La Barque Creek near Labarque Creek.
The dam stands 38 feet tall and stretches 540 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 114 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1953, the structure is well into its service life at over 50 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 05/18/2021.
At 38 feet, this dam is taller than 85% of dams nationwide.
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 | Jefferson |
| Nearest City | Labarque Creek |
| River/Stream | Tributary To La Barque Creek |
| Coordinates | 38.42541, -90.70189 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 540 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 114 acre-ft |
| Max Storage | 114 acre-ft |
| Normal Storage | 93 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 483 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | PAUL LARSON |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/18/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO30464 |
| Federal ID | MO30464 |
| More Info | State Dam Safety Program |