Lancefield Reservoir, located in Yamhill, Oregon, is a privately-owned water resource primarily used for irrigation purposes. The reservoir was completed in 1967 and has a storage capacity of 72 acre-feet, covering a surface area of 14 acres. It is situated along Salt Creek and Ash Swale, providing essential water supply for agricultural activities in the region. The dam, constructed from concrete, stands at a height of 10 feet and spans a length of 40 feet.

Managed by the Oregon Water Resources Department, Lancefield Reservoir is regulated, inspected, and enforced by state authorities to ensure its structural integrity and safe operation. Despite its low hazard potential, the reservoir undergoes regular inspections every 6 years to assess its condition. The last inspection was conducted in June 2017, with a hazard potential rating of "Low" and a condition assessment of "Not Rated." The reservoir plays a crucial role in supporting the local agricultural community and maintaining water resources in the area.

With its strategic location and reliable water supply, Lancefield Reservoir serves as a vital resource for sustaining irrigation needs in Whiteson, Oregon. Although not federally owned or funded, the reservoir contributes significantly to the agricultural sector in the region. Climate enthusiasts and water resource professionals can appreciate the reservoir's importance in water management, drought resilience, and supporting sustainable agricultural practices in the area.