The Klamath River, located in northern California and southern Oregon, is a large river that flows for over 250 miles. The river has many synonyms, including the Treaty Klamath River, the Trinity-Klamath River, and the Klamath. The river is also referred to as the Yurok "Big River" or the Karuk "Tolowa Dee-ni" River. The Klamath River is a popular destination for fishing, whitewater rafting, and other outdoor activities. It is home to many species of fish, including salmon and steelhead trout. The river also plays an important role in the culture and history of the surrounding indigenous communities.