Elgin Mill Treatment Lagoon #1 in Oregon is a privately owned water resource facility that serves multiple purposes, including irrigation and other water management activities. The lagoon, completed in 1976, stands at a height of 14 feet with a storage capacity of 131 acre-feet. Located in Union County, the lagoon is regulated by the Oregon Water Resources Department and undergoes regular inspections to ensure compliance with state regulations.

This Earth-type dam structure has a low hazard potential and is not currently rated for its condition. Despite its age, the Elgin Mill Treatment Lagoon #1 has been well-maintained and meets operational guidelines. The lagoon covers a surface area of 14.73 acres and is crucial for managing wastewater in the region. The facility's emergency action plan (EAP) status, risk assessment, and inundation maps are pending updates, indicating a proactive approach to maintaining safety and functionality.

With its strategic location in Elgin and proximity to the WASTE WATER stream, Elgin Mill Treatment Lagoon #1 plays a vital role in water resource management in the area. Its construction and operational history demonstrate a commitment to sustainability and environmental stewardship. For water resource and climate enthusiasts, this lagoon serves as a prime example of effective infrastructure for managing water resources in the face of changing environmental conditions.