Wallace No. 2
Wallace No. 2 is an earth dam located in Niobrara County, Wyoming, built in 1958. It carries a Low hazard potential classification and has a poor condition assessment.
About Wallace No. 2
The primary purpose of Wallace No. 2 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Muddy Creek Limited Partnership (private). It impounds the N Brush Crk, Trib. Brush Creek near Ardmore, Sd.
The dam stands 20 feet tall and stretches 1,250 feet across, creates a reservoir covering 25 acres, and has a maximum storage capacity of 280 acre-feet. Completed in 1958, 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 05/20/2024.
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Location
| State | Wyoming |
| County | Niobrara |
| Nearest City | Ardmore, Sd |
| River/Stream | N Brush Crk, Trib. Brush Creek |
| Coordinates | 43.07250, -104.18972 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 1,250 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 280 acre-ft |
| Max Storage | 280 acre-ft |
| Normal Storage | 155 acre-ft |
| Surface Area | 25 acres |
| Max Discharge | 4,152 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | MUDDY CREEK LIMITED PARTNERSHIP |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/20/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00948 |
| Federal ID | WY00948 |
| More Info | State Dam Safety Program |