Hoffman Lake Dam is an earth dam located in Montgomery County, Missouri, built in 1968. It carries a Significant hazard potential classification.
Dam profile
NID height · 32 ft32 ft tall and 250 ft long, taller than 74% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Hoffman Lake Dam
The primary purpose of Hoffman Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Bob Hoffman (private). It impounds the Tr-rumbo Br-loutre River near Mineola.
The dam stands 32 feet tall and stretches 250 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 44 acre-feet, and collects water from a drainage area of 38 square miles. Completed in 1968, the structure is well into its service life at over 50 years old.
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.
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Location
| State | Missouri |
| County | Montgomery |
| Nearest City | Mineola |
| River/Stream | Tr-rumbo Br-loutre River |
| Coordinates | 38.91771, -91.56915 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 31 ft |
| Dam Length | 250 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 44 acre-ft |
| Max Storage | 44 acre-ft |
| Normal Storage | 26 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 38 sq mi |
| Max Discharge | 155 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Bob Hoffman |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO10367 |
| Federal ID | MO10367 |
| More Info | State Dam Safety Program |