Arpin
Arpin is a gravity dam located in Sawyer County, Wisconsin, built in 1913. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Arpin
The primary purpose of Arpin is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Flambeau Hydro, Llc (public utility). It impounds the Chippewa River near Ladysmith.
The dam stands 34 feet tall and stretches 1,590 feet across, creates a reservoir covering 294 acres, has a maximum storage capacity of 980 acre-feet, and collects water from a drainage area of 800 square miles. Completed in 1913, the structure is over a century 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 07/19/2018.
At 34 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Wisconsin |
| County | Sawyer |
| Nearest City | Ladysmith |
| River/Stream | Chippewa River |
| Coordinates | 45.75160, -91.20250 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 34 ft |
| Dam Height | 12 ft |
| Dam Length | 1,590 ft |
| Year Completed | 1913 (113 years old) |
Storage & Hydraulics
| NID Storage | 980 acre-ft |
| Max Storage | 980 acre-ft |
| Normal Storage | 980 acre-ft |
| Surface Area | 294 acres |
| Drainage Area | 800 sq mi |
| Max Discharge | 22,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Flambeau Hydro, Llc |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/19/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WI00796 |
| Federal ID | WI00796 |
| More Info | State Dam Safety Program |