Pat is a privately owned Earth dam located in Johnson, Wyoming, along Caple Draw river. Built in 1958 for fire protection, stock, and small fish pond purposes, Pat stands at a height of 36 feet with a hydraulic height of 32 feet. Despite its low hazard potential, the dam is in poor condition and was last inspected in June 2021.

The dam has a storage capacity of 65 acre-feet and a surface area of 9 acres. With an uncontrolled spillway type and a spillway width of 46 feet, Pat poses a moderate risk (3) due to its condition assessment. Although the dam is not regulated by federal agencies, the State of Wyoming oversees its permitting, inspection, and enforcement processes.

Water resource and climate enthusiasts interested in Pat will find its location and historical significance compelling. As one of the many dams contributing to water management in Wyoming, Pat serves as a reminder of the importance of maintaining and monitoring infrastructure in the face of changing environmental conditions.