Etb Waterway Dams is an earth dam located in Marquette County, Michigan, built in 1986. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 20 ft20 ft tall and 800 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Etb Waterway Dams
Etb Waterway Dams is a dam in Marquette, Michigan. The dam is owned by Empire Iron Mining Partnership (private). It impounds the Green Creek near Gwinn.
The dam stands 20 feet tall and stretches 800 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 83 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1986, the structure is 40 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 09/01/2016. That was over 10 years ago.
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Location
| State | Michigan |
| County | Marquette |
| Nearest City | Gwinn |
| River/Stream | Green Creek |
| Coordinates | 46.38861, -87.68139 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 800 ft |
| Year Completed | 1986 (40 years old) |
Storage & Hydraulics
| NID Storage | 83 acre-ft |
| Max Storage | 83 acre-ft |
| Normal Storage | 80 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 5 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Empire Iron Mining Partnership |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/01/2016 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MI00838 |
| Federal ID | MI00838 |
| More Info | State Dam Safety Program |