Erity Dam is a gravity dam located in Oakland County, Michigan, built in 1913. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 16 ft16 ft tall and 320 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Erity Dam
The primary purpose of Erity Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Village of Beverly Hills (local government). It impounds the River Rouge near Beverly Hills.
The dam stands 16 feet tall and stretches 320 feet across, creates a reservoir covering 27 acres, has a maximum storage capacity of 200 acre-feet, and collects water from a drainage area of 41 square miles. Completed in 1913, 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 09/25/2012. That was over 14 years ago.
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Location
| State | Michigan |
| County | Oakland |
| Nearest City | Beverly Hills |
| River/Stream | River Rouge |
| Coordinates | 42.52500, -83.24500 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 320 ft |
| Year Completed | 1913 (113 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 150 acre-ft |
| Surface Area | 27 acres |
| Drainage Area | 41 sq mi |
| Max Discharge | 800 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Village of Beverly Hills |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 09/25/2012 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MI00247 |
| Federal ID | MI00247 |
| More Info | State Dam Safety Program |