Lake Tranquil Dam is an earth dam located in Jefferson County, Missouri, built in 1947. It carries a Low hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall, taller than 59% 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 Lake Tranquil Dam
The primary purpose of Lake Tranquil Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lk Trql Improvement Asso (private). It impounds the Tr to Ditch Creek near Morse Mill.
The dam stands 27 feet tall, creates a reservoir covering 8 acres, has a maximum storage capacity of 116 acre-feet, and collects water from a drainage area of 560 square miles. Completed in 1947, the structure is well-established, with more than 75 years of service.
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 | Jefferson |
| Nearest City | Morse Mill |
| River/Stream | Tr to Ditch Creek |
| Coordinates | 38.21861, -90.76005 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Year Completed | 1947 (79 years old) |
Storage & Hydraulics
| NID Storage | 116 acre-ft |
| Max Storage | 116 acre-ft |
| Normal Storage | 65 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 560 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lk Trql Improvement Asso |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO30378 |
| Federal ID | MO30378 |
| More Info | State Dam Safety Program |