Elms Reservoir, located in Baker, Oregon, is a private irrigation reservoir with a primary purpose of providing water for agricultural use. Completed in 1908, this Earth-type dam stands at a height of 14 feet and has a storage capacity of 190 acre-feet. The reservoir covers a surface area of 35.9 acres and is fed by a tributary to Job Creek, making it an essential water source for the surrounding area.

Despite its age, Elms Reservoir maintains a low hazard potential and has not been rated for overall condition. The outlet gates consist of a slide (sluice gate) for water control, and the last inspection in May 2017 revealed no significant issues. The reservoir is under state regulation by the Oregon Water Resources Department, ensuring that it meets permitting, inspection, and enforcement requirements to safeguard its integrity and water supply reliability.

For water resource and climate enthusiasts, Elms Reservoir serves as a historical and functional piece of infrastructure that highlights the importance of water management for agricultural sustainability in the region. With its modest size and low hazard potential, this reservoir continues to play a vital role in supporting local irrigation needs and contributing to the overall water resource management efforts in Oregon.