Water Storage
Water Storage is an earth dam located in Niobrara County, Wyoming, built in 1939. It carries a Low hazard potential classification and has a fair condition assessment.
About Water Storage
The primary purpose of Water Storage is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Usdi Blm (private). It impounds the Lance Creek near Edgemont, Sd.
The dam stands 30 feet tall and stretches 344 feet across, creates a reservoir covering 3 acres, and has a maximum storage capacity of 51 acre-feet. Completed in 1939, the structure is well-established, with more than 75 years of service.
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 08/25/2022.
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Location
| State | Wyoming |
| County | Niobrara |
| Nearest City | Edgemont, Sd |
| River/Stream | Lance Creek |
| Coordinates | 43.05500, -104.64550 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 344 ft |
| Year Completed | 1939 (87 years old) |
Storage & Hydraulics
| NID Storage | 51 acre-ft |
| Max Storage | 51 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 3 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | USDI BLM |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 08/25/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00827 |
| Federal ID | WY00827 |
| More Info | State Dam Safety Program |