Swan is a privately owned earth dam located in Laramie, Wyoming, near the city of Cheyenne. Built in 1907 for irrigation purposes, Swan stands at a height of 25 feet and has a storage capacity of 356 acre-feet. The dam spans 1450 feet in length and is situated on Clear Creek, with a drainage area of 11.6 square miles.

Despite its age, Swan has been maintained and regulated by the Wyoming State Engineer's Office, with regular inspections and enforcement measures in place. However, the dam is classified as having a significant hazard potential and is currently in poor condition, highlighting the need for ongoing risk management and potential rehabilitation efforts to ensure the safety and integrity of the structure.

With a spillway width of 150 feet and a maximum discharge capacity of 72 cubic feet per second, Swan is a vital water resource for the region. Its location within Congressional District 00, Wyoming, under the oversight of the Omaha District of the US Army Corps of Engineers, underscores its importance in water management and climate resilience efforts in the area.