Black Brook is an earth dam located in Washburn County, Wisconsin, built in 1964. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 460 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 Black Brook
The primary purpose of Black Brook is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Washburn County (local government). It impounds the Black Brook.
The dam stands 10 feet tall and stretches 460 feet across, creates a reservoir covering 70 acres, has a maximum storage capacity of 350 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1964, 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. The most recent inspection on record was 12/12/2012. That was over 13 years ago.
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Location
| State | Wisconsin |
| County | Washburn |
| Nearest City | None |
| River/Stream | Black Brook |
| Coordinates | 46.13453, -91.61328 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 460 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 350 acre-ft |
| Max Storage | 350 acre-ft |
| Normal Storage | 140 acre-ft |
| Surface Area | 70 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 35 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Washburn County |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 12/12/2012 |
| Emergency Action Plan | No |
Identifiers
| NID ID | WI01011 |
| Federal ID | WI01011 |
| More Info | State Dam Safety Program |