Williams Mill Dam
Williams Mill Dam is an earth dam located in Allegan County, Michigan, built in 1870. It carries a Low hazard potential classification.
About Williams Mill Dam
The primary purpose of Williams Mill Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by I & L Williams (private). It impounds the Mill Creek near Otsego.
The dam stands 17 feet tall and stretches 200 feet across, creates a reservoir covering 4 acres, and has a maximum storage capacity of 70 acre-feet. Completed in 1870, the structure is one of the older dams in the region, with over a century and a half 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. The most recent inspection on record was 01/01/1901. That was over 125 years ago.
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Location
| State | Michigan |
| County | Allegan |
| Nearest City | Otsego |
| River/Stream | Mill Creek |
| Coordinates | 42.43333, -85.74333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 200 ft |
| Year Completed | 1870 (156 years old) |
Storage & Hydraulics
| NID Storage | 70 acre-ft |
| Max Storage | 70 acre-ft |
| Normal Storage | 55 acre-ft |
| Surface Area | 4 acres |
| Max Discharge | 760 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | I & L Williams |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 01/01/1901 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MI00007 |
| Federal ID | MI00007 |
| More Info | State Dam Safety Program |