Grosse
Grosse is an earth dam located in Marinette County, Wisconsin, built in 1970. It carries a Low hazard potential classification and has a fair condition assessment.
About Grosse
The primary purpose of Grosse is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Grosse, Fred (private). It impounds the Murphy Creek.
The dam stands 18 feet tall and stretches 480 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 80 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1970, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 06/22/2018.
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Location
| State | Wisconsin |
| County | Marinette |
| Nearest City | None |
| River/Stream | Murphy Creek |
| Coordinates | 45.12161, -88.09552 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 480 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 80 acre-ft |
| Max Storage | 80 acre-ft |
| Normal Storage | 25 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 240 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Grosse, Fred |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/22/2018 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00491 |
| Federal ID | WI00491 |
| More Info | State Dam Safety Program |