East No. 1 Beardsley
East No. 1 Beardsley is an earth dam located in Niobrara County, Wyoming, built in 1959. It carries a Low hazard potential classification and has a poor condition assessment.
About East No. 1 Beardsley
The primary purpose of East No. 1 Beardsley 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 Stanley O. Swanson (private). It impounds the Greasewood Draw near Edgemont, Sd.
The dam stands 35 feet tall and stretches 222 feet across, creates a reservoir covering 4 acres, and has a maximum storage capacity of 58 acre-feet. Completed in 1959, 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 10/10/2022.
At 35 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Wyoming |
| County | Niobrara |
| Nearest City | Edgemont, Sd |
| River/Stream | Greasewood Draw |
| Coordinates | 43.31940, -104.51460 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 29 ft |
| Dam Length | 222 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 58 acre-ft |
| Max Storage | 58 acre-ft |
| Normal Storage | 36 acre-ft |
| Surface Area | 4 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | STANLEY O. SWANSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 10/10/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00742 |
| Federal ID | WY00742 |
| More Info | State Dam Safety Program |