Mcginnis Lake is an earth dam located in Franklin County, Missouri, built in 1975. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 540 ft long, taller than 62% 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 Mcginnis Lake
The primary purpose of Mcginnis Lake 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 Bill Mcginnis (private). It impounds the Tr-st Johns Creek near Washington.
The dam stands 28 feet tall and stretches 540 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 137 acre-feet, and collects water from a drainage area of 371 square miles. Completed in 1975, 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 | Franklin |
| Nearest City | Washington |
| River/Stream | Tr-st Johns Creek |
| Coordinates | 38.45512, -91.18390 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 27 ft |
| Dam Length | 540 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 137 acre-ft |
| Max Storage | 137 acre-ft |
| Normal Storage | 78 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 371 sq mi |
| Max Discharge | 410 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Bill Mcginnis |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO11391 |
| Federal ID | MO11391 |
| More Info | State Dam Safety Program |