Duncan Lake Dam
Duncan Lake Dam is an earth dam located in Warren County, Missouri, built in 1962. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Duncan Lake Dam
The primary purpose of Duncan Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Dream In The Sky, Inc (private). It impounds the Tr-peers Slough near Marthasville.
The dam stands 38 feet tall and stretches 350 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 107 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1962, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 04/30/2020.
At 38 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Missouri |
| County | Warren |
| Nearest City | Marthasville |
| River/Stream | Tr-peers Slough |
| Coordinates | 38.64221, -91.17120 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 350 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 107 acre-ft |
| Max Storage | 107 acre-ft |
| Normal Storage | 107 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 236 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | DREAM IN THE SKY, INC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/30/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MO30596 |
| Federal ID | MO30596 |
| More Info | State Dam Safety Program |