Big Foot Dam, also known as Upper Jackass Creek Reservoir or Bigfoot Dam, is a gravity dam located in Harney, Oregon, on the Jackass Creek. Built in 1953 by the Bureau of Land Management, this Federal-owned structure serves as a vital water supply source for the area. With a hydraulic height of 13 feet and a structural height of 16 feet, the dam has a storage capacity of 250 acre-feet, with a normal storage level of 160 acre-feet.

Despite its low hazard potential, Big Foot Dam is currently rated as being in poor condition, highlighting the need for maintenance and improvements to ensure its long-term reliability and safety. The dam spans 503 feet in length and is primarily constructed from buttress and stone materials. Its high risk assessment level of 2 signifies the importance of implementing effective risk management measures to address any potential issues.

Situated within the Bureau of Land Management's jurisdiction, Big Foot Dam plays a crucial role in managing water resources in the region. As a key piece of infrastructure for water supply, this dam warrants ongoing attention and investment to safeguard its functionality and resilience in the face of climate challenges and evolving environmental conditions.