Mach Lake Dam is an earth dam located in Perry County, Missouri, built in 1972. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 300 ft long, 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 Mach Lake Dam
The primary purpose of Mach Lake Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Joe Mach (private). It impounds the Tr-goose Creek near Saint Marys.
The dam stands 30 feet tall and stretches 300 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 100 acre-feet, and collects water from a drainage area of 160 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. The most recent inspection on record was 01/30/1981. That was over 45 years ago.
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Location
| State | Missouri |
| County | Perry |
| Nearest City | Saint Marys |
| River/Stream | Tr-goose Creek |
| Coordinates | 37.73754, -89.95946 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 29 ft |
| Dam Length | 300 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 100 acre-ft |
| Max Storage | 100 acre-ft |
| Normal Storage | 74 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 160 sq mi |
| Max Discharge | 10 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Joe Mach |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 01/30/1981 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO30133 |
| Federal ID | MO30133 |
| More Info | State Dam Safety Program |