Bumb Lake Dam
Bumb Lake Dam is an earth dam located in Franklin County, Missouri, built in 1980. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Bumb Lake Dam
The primary purpose of Bumb Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by John Bumb Revocable Trust (private). It impounds the St. Johns Creek near Washington.
The dam stands 38 feet tall and stretches 450 feet across, creates a reservoir covering 6 acres, and has a maximum storage capacity of 76 acre-feet. Completed in 1980, the structure is 46 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. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 03/07/2023.
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 | Franklin |
| Nearest City | Washington |
| River/Stream | St. Johns Creek |
| Coordinates | 38.55218, -91.09536 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 450 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 76 acre-ft |
| Max Storage | 76 acre-ft |
| Normal Storage | 64 acre-ft |
| Surface Area | 6 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | JOHN BUMB REVOCABLE TRUST |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/07/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MO60983 |
| Federal ID | MO60983 |
| More Info | State Dam Safety Program |