Manke
Manke is an earth dam located in Niobrara County, Wyoming, built in 1950. It carries a Low hazard potential classification and has a poor condition assessment.
About Manke
The primary purpose of Manke is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Barker Ranch, Llc (private). It impounds the Little Alkali Creek near Edgemont, Sd.
The dam stands 27 feet tall and stretches 575 feet across, and has a maximum storage capacity of 447 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 04/22/2024.
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Location
| State | Wyoming |
| County | Niobrara |
| Nearest City | Edgemont, Sd |
| River/Stream | Little Alkali Creek |
| Coordinates | 43.39300, -104.27000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 575 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 447 acre-ft |
| Max Storage | 447 acre-ft |
| Normal Storage | 269 acre-ft |
Ownership & Safety
| Purpose | Irrigation |
| Owner | BARKER RANCH, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 04/22/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00732 |
| Federal ID | WY00732 |
| More Info | State Dam Safety Program |