Roberts is an earth dam located in Sheridan County, Wyoming, built in 1952. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 25 ft25 ft tall and 660 ft long, taller than 50% of U.S. dams with a recorded height. 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 Roberts
The primary purpose of Roberts is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Wyoma J. Sampson Trustee, the Wyoma Jean Sampson Trust (private). It impounds the South Dry Creek near Acme.
The dam stands 25 feet tall and stretches 660 feet across, creates a reservoir covering 9 acres, and has a maximum storage capacity of 128 acre-feet. Completed in 1952, 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 09/16/2022.
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Location
| State | Wyoming |
| County | Sheridan |
| Nearest City | Acme |
| River/Stream | South Dry Creek |
| Coordinates | 44.84160, -107.12960 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 660 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 128 acre-ft |
| Max Storage | 128 acre-ft |
| Normal Storage | 72 acre-ft |
| Surface Area | 9 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Wyoma J. Sampson Trustee, the Wyoma Jean Sampson Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 09/16/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00664 |
| Federal ID | WY00664 |
| More Info | State Dam Safety Program |