Miller Reservoir in Wasco, Oregon, is a privately owned water resource managed by the Natural Resources Conservation Service for the primary purpose of irrigation. The reservoir, completed in 1952, stands at a dam height of 30 feet and has a storage capacity of 106 acre-feet. Situated along an unnamed tributary of the White River, the reservoir covers a surface area of 10 acres and serves the surrounding agricultural community in Wamic.

Although the dam's hazard potential is rated as low and its condition is not currently assessed, regular inspections are conducted every six years to ensure its structural integrity and safety. The reservoir is regulated by the Oregon Water Resources Department, with the state agency overseeing permitting, inspection, and enforcement activities. Despite its small drainage area of 0.54 square miles, Miller Reservoir plays a vital role in water management for the region, supporting local farmers and contributing to the sustainability of the area's agricultural practices. Enthusiasts interested in water resources and climate will appreciate the role of Miller Reservoir in providing essential irrigation water to the agricultural community in Wasco, Oregon, while also serving as a valuable asset for understanding regional water management strategies and practices.