Three Creek is a federal water resource in Sisters, Oregon, managed by the USDA Forest Service for irrigation purposes. The dam at Three Creek is an earth dam standing at 21 feet tall, with a length of 230 feet and a storage capacity of 1500 acre-feet. The dam's spillway is uncontrolled, with a width of 15 feet, and it is considered to have a significant hazard potential.

Despite being in a moderate risk category, Three Creek has not been rated for its condition assessment. The last inspection took place in November 2019, and the dam is regulated by the Oregon Water Resources Department. Although the dam is currently not rated for its condition, it serves as a vital resource for irrigation in the area, highlighting the importance of continued monitoring and maintenance to ensure its safety and efficiency for the surrounding community and ecosystem.