Pence
Pence is an earth dam located in Sheridan County, Wyoming, built in 1954. It carries a Low hazard potential classification and has a poor condition assessment.
About Pence
The primary purpose of Pence 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 Red Rock Hill Llc (private). It impounds the Lone Tree Creek near Clearmont.
The dam stands 28 feet tall and stretches 925 feet across, creates a reservoir covering 18 acres, and has a maximum storage capacity of 257 acre-feet. Completed in 1954, the structure is well into its service life at over 50 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 05/20/2025.
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Location
| State | Wyoming |
| County | Sheridan |
| Nearest City | Clearmont |
| River/Stream | Lone Tree Creek |
| Coordinates | 44.63420, -106.46570 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 925 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 257 acre-ft |
| Max Storage | 257 acre-ft |
| Normal Storage | 154 acre-ft |
| Surface Area | 18 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | RED ROCK HILL LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/20/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00574 |
| Federal ID | WY00574 |
| More Info | State Dam Safety Program |