Arntz Dam, located in Burns, Oregon, is a privately owned structure primarily used for irrigation purposes. Completed in 1957, this earth dam stands at 20 feet high with a length of 1026 feet, providing a storage capacity of 290 acre-feet. Situated in Harney County, this dam plays a crucial role in managing water resources in the region, with a low hazard potential and a condition assessment that is currently not rated.

Managed by the Oregon Water Resources Department, Arntz Dam is equipped with needle outlet gates and has a maximum discharge capacity of 500 cubic feet per second. Despite being inspected every 6 years, the last inspection took place in 2009. The dam's location in an unnamed river or stream contributes to its importance in sustaining agricultural activities in the area, ensuring a reliable water supply for irrigation purposes.

With its strategic position in the Portland District, Arntz Dam serves as a vital infrastructure for water management in the region. Its construction and operation are regulated by the state of Oregon, highlighting the significance of this earth dam in sustaining water resources and supporting the local ecosystem in Harney County.