La Belle Old City Lake Dam
La Belle Old City Lake Dam is an earth dam located in Lewis County, Missouri, built in 1961. It carries a High hazard potential classification and has a satisfactory condition assessment.
About La Belle Old City Lake Dam
The primary purpose of La Belle Old City Lake Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of La Belle (local government). It impounds the Tr Troublesome Creek near Steffenville.
The dam stands 35 feet tall and stretches 950 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 339 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1961, 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 07/28/2022.
At 35 feet, this dam is taller than 82% 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 | Lewis |
| Nearest City | Steffenville |
| River/Stream | Tr Troublesome Creek |
| Coordinates | 40.09076, -91.91252 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 950 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 339 acre-ft |
| Max Storage | 339 acre-ft |
| Normal Storage | 109 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 530 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF LA BELLE |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/28/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO10372 |
| Federal ID | MO10372 |
| More Info | State Dam Safety Program |