Reynolds No. 1
Reynolds No. 1 is an earth dam located in Sheridan County, Wyoming, built in 1972. It carries a Low hazard potential classification and has a fair condition assessment.
About Reynolds No. 1
The primary purpose of Reynolds No. 1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Sunlight Ranch Company (private). It impounds the Twin Creek near Wyola, Mt.
The dam stands 46 feet tall and stretches 1,000 feet across, creates a reservoir covering 44 acres, and has a maximum storage capacity of 889 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 09/15/2022.
At 46 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Wyoming |
| County | Sheridan |
| Nearest City | Wyola, Mt |
| River/Stream | Twin Creek |
| Coordinates | 44.97280, -107.39830 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 46 ft |
| Dam Height | 46 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 889 acre-ft |
| Max Storage | 889 acre-ft |
| Normal Storage | 661 acre-ft |
| Surface Area | 44 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | SUNLIGHT RANCH COMPANY |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 09/15/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00572 |
| Federal ID | WY00572 |
| More Info | State Dam Safety Program |