Boltonville is a gravity dam located in Washington County, Wisconsin, built in 1848. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 12 ft12 ft tall and 200 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 Boltonville
The primary purpose of Boltonville is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Boltonville Sportsmen Club (private). It impounds the Stony Creek near Boltonville.
The dam stands 12 feet tall and stretches 200 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 50 acre-feet, and collects water from a drainage area of 16 square miles. Completed in 1848, the structure is one of the older dams in the region, with over a century and a half 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. The most recent inspection on record was 11/20/2012. That was over 13 years ago.
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Location
| State | Wisconsin |
| County | Washington |
| Nearest City | Boltonville |
| River/Stream | Stony Creek |
| Coordinates | 43.52570, -88.10373 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 200 ft |
| Year Completed | 1848 (178 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 35 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 16 sq mi |
| Max Discharge | 1,300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Boltonville Sportsmen Club |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 11/20/2012 |
| Emergency Action Plan | No |
Identifiers
| NID ID | WI00327 |
| Federal ID | WI00327 |
| More Info | State Dam Safety Program |