Republic Mine Tailings Pond Dams
Republic Mine Tailings Pond Dams is an earth dam located in Marquette County, Michigan, built in 1960. It carries a Low hazard potential classification.
About Republic Mine Tailings Pond Dams
The primary purpose of Republic Mine Tailings Pond Dams is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Marquette Iron Mining Partnership (private). It impounds the Tributary To Michigamme River near Republic.
The dam stands 91 feet tall and stretches 22,300 feet across, creates a reservoir covering 220 acres, and has a maximum storage capacity of 880 acre-feet. Completed in 1960, the structure is well into its service life at over 50 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. The most recent inspection on record was 01/01/1901. That was over 125 years ago.
At 91 feet, this dam is taller than 98% of all dams in the United States.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Michigan |
| County | Marquette |
| Nearest City | Republic |
| River/Stream | Tributary To Michigamme River |
| Coordinates | 46.37333, -87.95833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 91 ft |
| Dam Height | 91 ft |
| Dam Length | 22,300 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 8,000 acre-ft |
| Max Storage | 880 acre-ft |
| Normal Storage | 8,000 acre-ft |
| Surface Area | 220 acres |
| Max Discharge | 200 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Tailings |
| Owner | Marquette Iron Mining Partnership |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 01/01/1901 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MI00578 |
| Federal ID | MI00578 |
| More Info | State Dam Safety Program |