Hoffmann Lake Dam is an earth dam located in Gasconade County, Missouri, built in 1972. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall, taller than 68% 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 Hoffmann Lake Dam
The primary purpose of Hoffmann Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Vincent B Hoffman (private). It impounds the Tr-wallace Creek near High Gate.
The dam stands 30 feet tall, creates a reservoir covering 9 acres, has a maximum storage capacity of 144 acre-feet, and collects water from a drainage area of 75 square miles. Completed in 1972, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Missouri |
| County | Gasconade |
| Nearest City | High Gate |
| River/Stream | Tr-wallace Creek |
| Coordinates | 38.22062, -91.62833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 144 acre-ft |
| Max Storage | 144 acre-ft |
| Normal Storage | 78 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 75 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Vincent B Hoffman |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO31455 |
| Federal ID | MO31455 |
| More Info | State Dam Safety Program |