Mays is a privately owned earth dam located on Muddy Creek in Jefferson, Oregon. Built in 1960, it serves primarily for irrigation purposes with a storage capacity of 457 acre-feet. The dam stands at a height of 37 feet, with a hydraulic height of 34 feet and a structural height of 38 feet. However, recent data indicates a high hazard potential and poor condition assessment, raising concerns for its safety and stability.

Despite being regulated by the Oregon Water Resources Department and subject to state permitting, inspection, and enforcement, Mays' poor condition assessment highlights the need for immediate attention and potential rehabilitation efforts. With a drainage area of 25.4 square miles and a maximum discharge of 40 cubic feet per second, any failure or breach could have significant implications for downstream communities and ecosystems. It is crucial for water resource and climate enthusiasts to monitor Mays closely and advocate for necessary maintenance and risk management measures to ensure its long-term safety and functionality.