The Klamath people are a Native American tribe of the Plateau culture area in Southern Oregon and Northern California. Today Klamath people are enrolled in the federally recognized tribes:Klamath Tribes, Oregon Quartz Valley Indian Community, California.

Upper Klamath Lake is a large, shallow freshwater lake east of the Cascade Range in south-central Oregon in the United States. The largest body of fresh water by surface area in Oregon, it is approximately 25 miles (40 km) long and 8 miles (13 km) wide and extends northwest from the city of Klamath Falls. It sits at an average elevation of 4,140 feet (1,260 m).