Central is a timber crib dam located in Rock County, Wisconsin, built in 1927. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 8 ft8 ft tall and 325 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 Central
The primary purpose of Central is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. It impounds the Rock River near Janesville.
The dam stands 8 feet tall and stretches 325 feet across, creates a reservoir covering 548 acres, has a storage capacity of 3,675 acre-feet, and collects water from a drainage area of 3,205 square miles. Completed in 1927, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 09/06/2019.
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Location
| State | Wisconsin |
| County | Rock |
| Nearest City | Janesville |
| River/Stream | Rock River |
| Coordinates | 42.68500, -89.02650 |
Physical Characteristics
| Dam Type | Timber Crib |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 325 ft |
| Year Completed | 1927 (99 years old) |
Storage & Hydraulics
| NID Storage | 3,675 acre-ft |
| Normal Storage | 3,675 acre-ft |
| Surface Area | 548 acres |
| Drainage Area | 3,205 sq mi |
| Max Discharge | 6,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | Not Listed |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/06/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WI00790 |
| Federal ID | WI00790 |
| More Info | State Dam Safety Program |