Duffy's Marsh
Low HazardFair ConditionEmergency Action Plan: No
Location
| State | Wisconsin |
| County | Marquette |
| River/Stream | UNNAMED TRIB TO GRAND RIVER |
| Coordinates | 43.73782, -89.30688 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 10,000 ft |
| Year Completed | 1997 (29 years old) |
Storage & Hydraulics
| NID Storage | 5,750 acre-ft |
| Max Storage | 5,750 acre-ft |
| Surface Area | 1,302 acres |
| Drainage Area | 6 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | DUFFY MARSH PROPERTY OWNERS |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 04/27/2021 |
| Emergency Action Plan | No |