Decker, located in Sheridan, Wyoming, is a private earth dam designed by Doyle M. Fritz for irrigation purposes. Completed in 1992, this structure on Wolf Creek Offstream stands at 14 feet high and spans 850 feet in length, with a storage capacity of 84 acre-feet. Despite being regulated by the State of Wyoming and having undergone inspections, Decker is classified as having a low hazard potential but with a poor condition assessment.

The dam features an uncontrolled spillway with a width of 60 feet and a slide (sluice gate) outlet gate. While the risk assessment indicates a moderate level of risk, with a rating of 3, there are no specific risk management measures or emergency action plans mentioned in the data. With its location in RANCHESTER and proximity to the Wolf Creek Offstream, Decker serves multiple purposes including fire protection, stock, fish and wildlife pond, and irrigation, making it a vital resource for the local community and ecosystem. For water resource and climate enthusiasts, Decker presents an interesting case study in dam infrastructure management and the importance of regular inspections and maintenance to ensure safety and functionality in the face of changing environmental conditions.