Helms Reservoir, located in Linn County, Oregon, is a privately owned water storage facility primarily used for irrigation purposes. Built in 1968, this earth dam structure stands at 25 feet high, with a storage capacity of 120 acre-feet and a surface area of 13.7 acres. The reservoir is fed by the South Santiam River, a tributary in the region, and has a maximum discharge rate of 140 cubic feet per second.

Though classified as having low hazard potential, Helms Reservoir is regulated, inspected, and enforced by the Oregon Water Resources Department to ensure its safety and compliance with state regulations. The dam has not been rated for its condition, and the last inspection took place in December 2018, with a frequency of every 6 years. Despite being privately owned, the design of the dam was overseen by the Natural Resources Conservation Service.

Water resource and climate enthusiasts will appreciate the valuable role that Helms Reservoir plays in supporting irrigation activities in the region, as well as its impact on the surrounding ecosystem. With its modest storage capacity and low hazard potential, the reservoir serves as a vital water source for agricultural purposes while also ensuring the safety and well-being of the community. As climate change continues to impact water resources, the management and maintenance of structures like Helms Reservoir are crucial in sustaining water availability for future generations.