Luttrell Lake Upper Dam
Luttrell Lake Upper Dam is an earth dam located in Washington County, Missouri, built in 1934. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Luttrell Lake Upper Dam
The primary purpose of Luttrell Lake Upper Dam is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by 2 Owners (private). It impounds the Tr-mine A Breton near Potosi.
The dam stands 55 feet tall and stretches 2,000 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 257 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1934, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 11/17/2020.
At 55 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Missouri |
| County | Washington |
| Nearest City | Potosi |
| River/Stream | Tr-mine A Breton |
| Coordinates | 37.99562, -90.82617 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 55 ft |
| Dam Height | 44 ft |
| Dam Length | 2,000 ft |
| Year Completed | 1934 (92 years old) |
Storage & Hydraulics
| NID Storage | 257 acre-ft |
| Max Storage | 257 acre-ft |
| Normal Storage | 257 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 119 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Tailings |
| Owner | 2 owners |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/17/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MO30747 |
| Federal ID | MO30747 |
| More Info | State Dam Safety Program |