General American Life Insurance Lk Dm
General American Life Insurance Lk Dm is an earth dam located in St. Louis County, Missouri, built in 1976. It carries a High hazard potential classification.
About General American Life Insurance Lk Dm
The primary purpose of General American Life Insurance Lk Dm is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Gnrl Amer Life Insrnc Co (private). It impounds the Tr To Meramec near Arnold.
The dam stands 33 feet tall, creates a reservoir covering 4 acres, has a maximum storage capacity of 71 acre-feet, and collects water from a drainage area of 37 square miles. Completed in 1976, the structure is 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. The most recent inspection on record was 10/08/1980. That was 45 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.
At 33 feet, this dam is taller than 78% 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 | St. Louis |
| Nearest City | Arnold |
| River/Stream | Tr To Meramec |
| Coordinates | 38.49177, -90.38716 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 71 acre-ft |
| Max Storage | 71 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 37 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | GNRL AMER LIFE INSRNC CO |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Last Inspection | 10/08/1980 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO31390 |
| Federal ID | MO31390 |
| More Info | State Dam Safety Program |