Werner is an earth dam located in Converse County, Wyoming, built in 1950. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 22 ft22 ft tall and 1,170 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Werner
The primary purpose of Werner is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by J. P. Werner & Sons, Inc. (private). It impounds the Lightning Creek near Edgemont, Sd.
The dam stands 22 feet tall and stretches 1,170 feet across, creates a reservoir covering 43 acres, and has a maximum storage capacity of 570 acre-feet. Completed in 1950, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 06/12/2024.
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Location
| State | Wyoming |
| County | Converse |
| Nearest City | Edgemont, Sd |
| River/Stream | Lightning Creek |
| Coordinates | 43.07167, -105.13944 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 1,170 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 570 acre-ft |
| Max Storage | 570 acre-ft |
| Normal Storage | 322 acre-ft |
| Surface Area | 43 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | J. P. Werner & Sons, Inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/12/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00794 |
| Federal ID | WY00794 |
| More Info | State Dam Safety Program |