Foster No. 1 Dam 1a (2nd Enl.) is an earth dam located in Park County, Wyoming, built in 1953. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 24 ft24 ft tall and 465 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 Foster No. 1 Dam 1a (2nd Enl.)
The primary purpose of Foster No. 1 Dam 1a (2nd Enl.) is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Hoodoo Land Holdings, LLC (private). It impounds the Sage Creek near Byron.
The dam stands 24 feet tall and stretches 465 feet across, creates a reservoir covering 40 acres, and has a maximum storage capacity of 783 acre-feet. Completed in 1953, 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 08/15/2024.
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Location
| State | Wyoming |
| County | Park |
| Nearest City | Byron |
| River/Stream | Sage Creek |
| Coordinates | 44.28139, -109.18778 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 465 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 783 acre-ft |
| Max Storage | 783 acre-ft |
| Normal Storage | 573 acre-ft |
| Surface Area | 40 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Hoodoo Land Holdings, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 08/15/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01158 |
| Federal ID | WY01158 |
| More Info | State Dam Safety Program |