Dorchester is a gravity dam located in Clark County, Wisconsin, built in 2011. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 13 ft13 ft tall and 400 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 Dorchester
The primary purpose of Dorchester is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Village of Dorchester (local government). It impounds the N.fork Poplar River near Osseo.
The dam stands 13 feet tall and stretches 400 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 177 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 2011, the structure is relatively new.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 08/21/2013. That was over 13 years ago.
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Location
| State | Wisconsin |
| County | Clark |
| Nearest City | Osseo |
| River/Stream | N.fork Poplar River |
| Coordinates | 44.99906, -90.33008 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 400 ft |
| Year Completed | 2011 (15 years old) |
Storage & Hydraulics
| NID Storage | 177 acre-ft |
| Max Storage | 177 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,360 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Village of Dorchester |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/21/2013 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00317 |
| Federal ID | WI00317 |
| More Info | State Dam Safety Program |