Klonaqua Lake Dam, located in Leavenworth, Washington, was completed in 1933 and is owned by a public utility. The dam serves primarily for irrigation purposes, with additional benefits for recreation. It is a rockfill dam standing at a hydraulic height of 35.1 feet and a structural height of 19.3 feet, with a normal storage capacity of 1171.7 acre-feet and a maximum storage of 1223 acre-feet. The dam is situated on Tr-French Creek and falls under the regulatory oversight of the Washington Dept of Ecology, ensuring its compliance with state regulations and permitting requirements.

Despite its historical significance and vital role in water resource management, Klonaqua Lake Dam poses a high hazard potential and has been assessed as being in poor condition. The last inspection in August 2018 revealed the need for improvements to enhance the dam's safety and stability. The emergency action plan (EAP) for the dam was last updated in June 2021, indicating ongoing efforts to address potential risks and ensure preparedness for emergencies. With a drainage area of 0.77 square miles and a surface area of 62 acres, the dam's significance extends beyond irrigation to include environmental and recreational considerations.

As a key structure in the region's water infrastructure, Klonaqua Lake Dam plays a crucial role in water supply management and agricultural activities. Its association with Tr-French Creek and its location within the scenic landscape of Chelan County, Washington, make it a focal point for water resource and climate enthusiasts. The dam's historical legacy, combined with its current operational challenges and the need for maintenance and risk management measures, highlight the complex interplay between human development and environmental stewardship in the context of water resource management.