1. Lake Chelan: Located in the eastern part of the state, Lake Chelan is known for its stunning beauty and deep blue water. It is the largest natural lake in Washington by volume and the third-deepest lake in the United States. The lake stretches for over 50 miles and is surrounded by towering mountains, including the North Cascades.
2. Lake Washington: Situated in the Puget Sound region, Lake Washington is the second largest natural lake in the state and the largest freshwater lake in the region. It is a popular destination for boating, swimming, fishing, and other water sports. The lake is also home to several islands, including Mercer Island and Bainbridge Island.
3. Lake Roosevelt: Formed by the Grand Coulee Dam on the Columbia River, Lake Roosevelt is the largest reservoir in Washington and one of the largest in the United States. It stretches for over 150 miles and has over 600 miles of shoreline. The lake is a popular spot for fishing, boating, and other outdoor activities.