Amelia No. 1
Amelia No. 1 is an earth dam located in Niobrara County, Wyoming, built in 1961. It carries a Low hazard potential classification and has a poor condition assessment.
About Amelia No. 1
The primary purpose of Amelia 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 D & B Moen Ranch, Llc (private). It impounds the Alum Creek near Edgemont, Sd.
The dam stands 29 feet tall and stretches 460 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 125 acre-feet, and collects water from a drainage area of 15 square miles. Completed in 1961, 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 06/26/2023.
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Location
| State | Wyoming |
| County | Niobrara |
| Nearest City | Edgemont, Sd |
| River/Stream | Alum Creek |
| Coordinates | 43.16250, -104.31056 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 24 ft |
| Dam Length | 460 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 125 acre-ft |
| Max Storage | 125 acre-ft |
| Normal Storage | 71 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 15 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | D & B MOEN RANCH, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/26/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00531 |
| Federal ID | WY00531 |
| More Info | State Dam Safety Program |