Green Lake Dam
Green Lake Dam is an earth dam located in Washtenaw County, Michigan, built in 1981. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Green Lake Dam
Green Lake Dam is a dam in Washtenaw, Michigan. The dam is owned by Mdnr Parks & Recreation (state). It impounds the Tributary To Portage River near Troy.
The dam stands 9 feet tall and stretches 200 feet across, creates a reservoir covering 90 acres, has a maximum storage capacity of 550 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1981, the structure is 45 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 06/05/2017.
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Location
| State | Michigan |
| County | Washtenaw |
| Nearest City | Troy |
| River/Stream | Tributary To Portage River |
| Coordinates | 42.37172, -84.07602 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 200 ft |
| Year Completed | 1981 (45 years old) |
Storage & Hydraulics
| NID Storage | 550 acre-ft |
| Max Storage | 550 acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 90 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 191 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | MDNR Parks & Recreation |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/05/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MI00790 |
| Federal ID | MI00790 |
| More Info | State Dam Safety Program |