Hancock Lake is a gravity dam located in Oneida County, Wisconsin, built in 1930. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 11 ft11 ft tall and 50 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Hancock Lake
The primary purpose of Hancock Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town of Woodboro (local government). It impounds the Little Rice Creek.
The dam stands 11 feet tall and stretches 50 feet across, creates a reservoir covering 259 acres, has a maximum storage capacity of 2,600 acre-feet, and collects water from a drainage area of 22 square miles. Completed in 1930, the structure is well-established, with more than 75 years of service.
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 08/23/2013. That was over 13 years ago.
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Location
| State | Wisconsin |
| County | Oneida |
| Nearest City | None |
| River/Stream | Little Rice Creek |
| Coordinates | 45.60832, -89.63954 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 50 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 2,600 acre-ft |
| Max Storage | 2,600 acre-ft |
| Normal Storage | 1,500 acre-ft |
| Surface Area | 259 acres |
| Drainage Area | 22 sq mi |
| Max Discharge | 500 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Woodboro |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 08/23/2013 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00684 |
| Federal ID | WI00684 |
| More Info | State Dam Safety Program |