Big Mosherville Dam is an earth dam located in Hillsdale County, Michigan, built in 1898. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 180 ft long. 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 Big Mosherville Dam
The primary purpose of Big Mosherville Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Hillsdale County Drain Commissioner (private). It impounds the South Branch Kalamazoo River near Mosherville.
The dam stands 10 feet tall and stretches 180 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 110 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1898, the structure is over a century 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 11/24/2019.
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Location
| State | Michigan |
| County | Hillsdale |
| Nearest City | Mosherville |
| River/Stream | South Branch Kalamazoo River |
| Coordinates | 42.05885, -84.66017 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 180 ft |
| Year Completed | 1898 (128 years old) |
Storage & Hydraulics
| NID Storage | 110 acre-ft |
| Max Storage | 110 acre-ft |
| Normal Storage | 92 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 82 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Hillsdale County Drain Commissioner |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 11/24/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MI00083 |
| Federal ID | MI00083 |
| More Info | State Dam Safety Program |