Decker
Decker is an earth dam located in Sheridan County, Wyoming, built in 1992. It carries a Low hazard potential classification and has a fair condition assessment.
About Decker
The primary purpose of Decker is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Eaton Brothers, Inc. (private). It impounds the Wolf Creek Offstream near Ranchester.
The dam stands 14 feet tall and stretches 850 feet across, creates a reservoir covering 14 acres, has a storage capacity of 84 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1992, the structure is 34 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 05/08/2023.
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Location
| State | Wyoming |
| County | Sheridan |
| Nearest City | Ranchester |
| River/Stream | Wolf Creek Offstream |
| Coordinates | 44.79861, -107.21944 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 850 ft |
| Year Completed | 1992 (34 years old) |
Storage & Hydraulics
| NID Storage | 84 acre-ft |
| Normal Storage | 84 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 88 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | EATON BROTHERS, INC. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 05/08/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY02075 |
| Federal ID | WY02075 |
| More Info | State Dam Safety Program |