Harry L. Wolff No. 1
Harry L. Wolff No. 1 is an earth dam located in Campbell County, Wyoming, built in 1999. It carries a Low hazard potential classification and has a fair condition assessment.
About Harry L. Wolff No. 1
The primary purpose of Harry L. Wolff No. 1 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Harry L. And Ruth Wolff Living Trust (private). It impounds the Gap Butte Draw near Union Chappel Road.
The dam stands 35 feet tall and stretches 435 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 41 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1999, the structure is 27 years old.
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 04/23/2024.
At 35 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Wyoming |
| County | Campbell |
| Nearest City | Union Chappel Road |
| River/Stream | Gap Butte Draw |
| Coordinates | 44.19972, -105.43028 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 27 ft |
| Dam Length | 435 ft |
| Year Completed | 1999 (27 years old) |
Storage & Hydraulics
| NID Storage | 41 acre-ft |
| Max Storage | 41 acre-ft |
| Normal Storage | 28 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 590 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | HARRY L. AND RUTH WOLFF LIVING TRUST |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 04/23/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY02278 |
| Federal ID | WY02278 |
| More Info | State Dam Safety Program |