Woolhizer Dam
Woolhizer Dam is an earth dam located in Tripp County, South Dakota, built in 1935. It carries a Low hazard potential classification.
About Woolhizer Dam
The primary purpose of Woolhizer Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Donn Paulson (private). It impounds the Tr-rock Bridge Creek.
The dam stands 30 feet tall and stretches 520 feet across, creates a reservoir covering 10 acres, and has a maximum storage capacity of 450 acre-feet. Completed in 1935, 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.
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Location
| State | South Dakota |
| County | Tripp |
| Nearest City | None |
| River/Stream | Tr-rock Bridge Creek |
| Coordinates | 43.03973, -99.72212 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 520 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 450 acre-ft |
| Max Storage | 450 acre-ft |
| Normal Storage | 160 acre-ft |
| Surface Area | 10 acres |
| Max Discharge | 1,386 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Donn Paulson |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00556 |
| Federal ID | SD00556 |
| More Info | State Dam Safety Program |