Diamond Lake is a natural freshwater lake located in the Umpqua National Forest of southern Oregon in the United States. The lake is situated at an elevation of 5,183 feet (1,580 meters) and has a surface area of about 2,824 acres (1,143 hectares).
Diamond Lake is known for its excellent fishing opportunities, with rainbow trout being the most common species found in the lake. The lake is also popular for water sports, including boating, swimming, and kayaking.
In addition to recreational activities, the Diamond Lake area is home to several hiking trails, including the Mount Thielsen Trail and the Pacific Crest Trail, which passes through the area. There are also several campgrounds and resorts located around the lake, providing visitors with lodging options.
During the winter months, Diamond Lake is a popular destination for snowmobiling, cross-country skiing, and snowshoeing. The nearby Mount Bailey and Mount Thielsen also provide opportunities for downhill skiing and snowboarding.