Plum Tree is a privately owned earthen dam located in Campbell County, Wyoming, specifically in the city of Powderville. Built in 1955, the dam stands at a height of 36 feet and serves multiple purposes, including fire protection, stock, and a small fish pond. It has a maximum storage capacity of 111 acre-feet and a normal storage capacity of 72 acre-feet, with a surface area of 7 acres.

The dam's primary source is Plum Tree Draw, and it is regulated by the State Engineer's Office in Wyoming. Despite its low hazard potential and fair condition assessment, the dam is inspected every 5 years to ensure its structural integrity. It features an uncontrolled spillway with a width of 50 feet and no outlet gates. The risk assessment for the dam is considered moderate, and it is under the jurisdiction of the Omaha District of the US Army Corps of Engineers.

For water resource and climate enthusiasts, Plum Tree represents a unique example of a multi-purpose dam supporting various water-related activities in the region. Its historical significance, combined with its moderate risk assessment and state regulation, make it a noteworthy structure for those interested in water resource management and climate resilience. The dam's location in Campbell County, Wyoming, further adds to its appeal for those studying water infrastructure in the American West.