Potagannissing Dam
Potagannissing Dam is an earth dam located in Chippewa County, Michigan, built in 1948. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Potagannissing Dam
The primary purpose of Potagannissing Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mdnr Wildlife (state). It impounds the Potagannissing River near Indian Mound.
The dam stands 7 feet tall and stretches 500 feet across, creates a reservoir covering 2,200 acres, has a maximum storage capacity of 6,160 acre-feet, and collects water from a drainage area of 32 square miles. Completed in 1948, the structure is well-established, with more than 75 years 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/09/2015. That was over 10 years ago.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Michigan |
| County | Chippewa |
| Nearest City | Indian Mound |
| River/Stream | Potagannissing River |
| Coordinates | 46.04101, -83.65506 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 7 ft |
| Dam Height | 7 ft |
| Dam Length | 500 ft |
| Year Completed | 1948 (78 years old) |
Storage & Hydraulics
| NID Storage | 6,160 acre-ft |
| Max Storage | 6,160 acre-ft |
| Normal Storage | 1,760 acre-ft |
| Surface Area | 2,200 acres |
| Drainage Area | 32 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | MDNR Wildlife |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/09/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MI00784 |
| Federal ID | MI00784 |
| More Info | State Dam Safety Program |