McKay Acres Dam, also known as Art McKay Dam, is a private dam located in Marion County, Oregon along the Champoeg River. Built in 1968, this earth-type dam serves primarily for irrigation purposes with a storage capacity of 510 acre-feet. The dam stands at a height of 15 feet with a hydraulic height of 13 feet and a structural height of 17 feet, encompassing a length of 130 feet. Despite its low hazard potential, the dam has not been rated for its condition assessment.

Owned and regulated by a private entity, McKay Acres Dam falls under the jurisdiction of the Oregon Water Resources Department (OWRD) with permitting, inspection, and enforcement carried out by the state agency. The dam features a slide (sluice gate) outlet for water control and has a maximum discharge capacity of 410 cubic feet per second. Although it has not been modified in recent years, the dam is inspected every 6 years to ensure its continued safety and functionality. With its picturesque location and crucial role in supporting local irrigation needs, McKay Acres Dam serves as a key water resource infrastructure in the Butteville area.