Green Lake Dam, located in Washtenaw, Michigan, is a state-regulated structure with a primary purpose classified as "Other." This earth dam, completed in 1981, stands at a height of 9 feet with a hydraulic height of 6.3 feet and a length of 200 feet.
Wind
Humidity
The reservoir created by the dam has a normal storage capacity of 200 acre-feet and a maximum storage of 550 acre-feet, covering a surface area of 90 acres and draining an area of 0.99 square miles.
With a low hazard potential and a satisfactory condition assessment as of June 2017, Green Lake Dam features an uncontrolled spillway with a width of 13 feet. The dam has a moderate risk assessment level of 3 and is inspected every five years to ensure its safety and functionality. The structure is situated in a picturesque location near the Portage River, providing vital water resource management for the surrounding area while also serving as a point of interest for climate and water resource enthusiasts.
Year Completed |
1981 |
Dam Length |
200 |
Dam Height |
9 |
River Or Stream |
Tributary to Portage River |
Primary Dam Type |
Earth |
Surface Area |
90 |
Hydraulic Height |
6.3 |
Drainage Area |
0.99 |
Nid Storage |
550 |
Structural Height |
9 |
Hazard Potential |
Low |
Nid Height |
9 |
Mill Creek Near Dexter
|
29cfs |
River Raisin Near Manchester
|
17cfs |
Huron River Near Hamburg
|
150cfs |
Grand River At Jackson
|
79cfs |
Huron River At Ann Arbor
|
293cfs |
Malletts Creek At Ann Arbor
|
2cfs |
| Location | Reservations | Toilets |
|---|---|---|
Green Lake Rustic Campground
|
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Green Lake - Waterloo State Rec Area
|
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Sugarloaf Lake - Waterloo State Rec Area
|
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Menominee
|
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Peach Area
|
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Erie
|