Lonesome Lake, located in Malheur, Oregon, is a private irrigation reservoir with a dam height of 35 feet and a storage capacity of 186 acre-feet. The dam, primarily used for irrigation purposes, is classified as an earth dam and is regulated by the Oregon Water Resources Department. Despite its critical role in providing water for agricultural activities, the dam is considered to have a high hazard potential and is in poor condition, as indicated by a recent inspection in August 2020.

The dam at Lonesome Lake poses a potential risk to the surrounding area due to its deteriorating condition, highlighting the importance of regular maintenance and monitoring to ensure public safety and water resource sustainability. While the dam has not been modified in recent years, its hazard potential underscores the need for proactive risk management measures and emergency preparedness protocols. With the dam being located in a private setting and subject to state jurisdiction and regulation, collaboration between stakeholders is essential to address the safety concerns and maintain the integrity of the infrastructure.

As climate change continues to impact water resources and weather patterns, the maintenance and monitoring of dams like Lonesome Lake become increasingly crucial in safeguarding communities and ecosystems from potential hazards. The high hazard potential of the dam necessitates a comprehensive risk assessment and management strategy to mitigate the risks associated with its condition. By addressing the poor state of the dam and implementing necessary improvements, stakeholders can ensure the long-term viability of Lonesome Lake as a vital water resource for irrigation in the region.