Walker
Walker is an earth dam located in Niobrara County, Wyoming, built in 1972. It carries a Low hazard potential classification and has a fair condition assessment.
About Walker
The primary purpose of Walker is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Loren R. Walker Family Ltd. Partnership (private). It impounds the Zimmerman Draw near Edgemont, Sd.
The dam stands 21 feet tall and stretches 533 feet across, creates a reservoir covering 8 acres, and has a maximum storage capacity of 103 acre-feet. Completed in 1972, 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 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 09/28/2023.
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Location
| State | Wyoming |
| County | Niobrara |
| Nearest City | Edgemont, Sd |
| River/Stream | Zimmerman Draw |
| Coordinates | 43.30306, -104.41722 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 533 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 103 acre-ft |
| Max Storage | 103 acre-ft |
| Normal Storage | 59 acre-ft |
| Surface Area | 8 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | LOREN R. WALKER FAMILY LTD. PARTNERSHIP |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 09/28/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00430 |
| Federal ID | WY00430 |
| More Info | State Dam Safety Program |