Spencer
Spencer is an earth dam located in Weston County, Wyoming, built in 1952. It carries a Significant hazard potential classification and has a poor condition assessment.
About Spencer
The primary purpose of Spencer is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by True Ranches, Inc. (randy Ferella) (private). It impounds the Stockade Beaver Creek near Edgemont, Sd.
The dam stands 45 feet tall and stretches 1,350 feet across, creates a reservoir covering 126 acres, has a maximum storage capacity of 2,847 acre-feet, and collects water from a drainage area of 20 square miles. Completed in 1952, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in 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 06/08/2023.
At 45 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Wyoming |
| County | Weston |
| Nearest City | Edgemont, Sd |
| River/Stream | Stockade Beaver Creek |
| Coordinates | 43.82333, -104.10528 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 1,350 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 2,847 acre-ft |
| Max Storage | 2,847 acre-ft |
| Normal Storage | 2,162 acre-ft |
| Surface Area | 126 acres |
| Drainage Area | 20 sq mi |
| Max Discharge | 3,827 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | TRUE RANCHES, INC. (RANDY FERELLA) |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 06/08/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00717 |
| Federal ID | WY00717 |
| More Info | State Dam Safety Program |