Sawmill is a privately owned irrigation dam located in Sheridan, Wyoming, specifically in the city of Beckton. Built in 1972, this earth dam stands at a height of 38 feet with a hydraulic height of 31 feet, serving the primary purpose of irrigation for the surrounding area. The dam has a storage capacity of 1831 acre-feet and covers a surface area of 75 acres, with a drainage area of 8.3 square miles.

Despite being classified as having a high hazard potential, Sawmill is currently in fair condition as of its last inspection in September 2021. The dam features an uncontrolled spillway and a single slide (sluice gate) outlet gate. With a maximum discharge capacity of 960 cubic feet per second, Sawmill Creek is the primary water source for this structure. While the risk assessment categorizes the dam as moderate, it is regularly inspected and maintained to ensure the safety of the surrounding community and environment.

The area is represented by Liz Cheney (R) in Congressional District 00, Wyoming, and falls under the jurisdiction of the State Regulatory Agency (SEO). With state-regulated permitting, inspection, and enforcement in place, Sawmill remains a crucial water resource for irrigation purposes in the region, highlighting the importance of sustainable water management practices for climate enthusiasts and water resource stakeholders alike.