Duncan Dam
Duncan Dam is an earth dam located in Isabella County, Michigan, built in 1967. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Duncan Dam
The primary purpose of Duncan Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mary Koella (private). It impounds the Duncan Drain near Clare.
The dam stands 27 feet tall and stretches 900 feet across, creates a reservoir covering 36 acres, has a maximum storage capacity of 472 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1967, 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 05/11/2017.
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Location
| State | Michigan |
| County | Isabella |
| Nearest City | Clare |
| River/Stream | Duncan Drain |
| Coordinates | 43.78833, -84.82500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 900 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 472 acre-ft |
| Max Storage | 472 acre-ft |
| Normal Storage | 391 acre-ft |
| Surface Area | 36 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 100 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Mary Koella |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/11/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MI00426 |
| Federal ID | MI00426 |
| More Info | State Dam Safety Program |