Mcginnis Lake Dam, located in Grand Blanc, Michigan, is a state-owned structure primarily used for recreation purposes.
Wind
Humidity
Built in 1978, this earth dam stands at a height of 19 feet and has a hydraulic height of 14 feet, with a length of 400 feet. The dam has a normal storage capacity of 16 acre-feet and a maximum storage capacity of 125 acre-feet, serving as a vital resource for the surrounding area.
With an uncontrolled spillway width of 15 feet, Mcginnis Lake Dam has a low hazard potential and is currently assessed to be in fair condition as of October 2020. The dam is inspected every five years, with the most recent inspection revealing moderate risk levels. Despite its moderate risk assessment, the dam is equipped to handle a maximum discharge of 200 cfs and plays a crucial role in managing water resources for the tributary to Thread Creek.
As a significant feature in the region, Mcginnis Lake Dam provides not only recreational opportunities but also serves as a crucial resource for water management. With its strategic location and moderate risk assessment, the dam is an essential component in the overall infrastructure of Michigan's water resource system.
Year Completed |
1978 |
Dam Length |
400 |
Dam Height |
19 |
River Or Stream |
Tributary to Thread Creek |
Primary Dam Type |
Earth |
Surface Area |
25 |
Hydraulic Height |
14 |
Drainage Area |
0.41 |
Nid Storage |
125 |
Structural Height |
19 |
Hazard Potential |
Low |
Nid Height |
19 |
Kearsley Creek Near Davison
|
35cfs |
Huron River At Milford
|
73cfs |
Farmers Creek Near Lapeer
|
12cfs |
Flint River Near Flint
|
239cfs |
Flint River Near Otisville
|
135cfs |
Clinton River At Auburn Hills
|
123cfs |
| Location | Reservations | Toilets |
|---|---|---|
Holly State Rec Area
|
||
Group Camping Area 14
|
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Group Camping Area 12
|
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Group Camping Area 11
|
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Group Camping Area 10
|
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Groveland Oaks County Park
|