Chelan, also known as Lake Chelan, is a gravity dam located in Chelan Falls, Washington. Built in 1927 by the Washington Water Power Company, this hydroelectric structure serves the primary purposes of flood risk reduction and generating hydroelectric power. With a height of 33 feet and a structural height of 66 feet, Chelan stands as a significant water resource in the region.

The dam has a storage capacity of 676,100 acre-feet and covers a surface area of 32,980 acres. It is situated on the Chelan River, with a drainage area of 952 square miles. In case of emergencies, the dam is equipped with a controlled spillway with a width of 160 feet. The risk assessment for Chelan is rated as very high, emphasizing the importance of proper management and maintenance of this critical infrastructure.

Despite its age, Chelan continues to play a vital role in water resource management and electricity generation in the region. The dam is regulated by the Federal Energy Regulatory Commission and has a significant hazard potential. With its historical significance and ongoing importance in water resource management, Chelan stands as a key feature in the landscape of Chelan County, Washington.