Koyukuk

Koyukuk is a river in the U.S. state of Alaska. It is a major tributary of the Yukon River, approximately 425 miles (684 km) long. The Koyukuk is formed by the confluence of the John River and the Alatna River in the Endicott Mountains, part of the Brooks Range in the Gates of the Arctic National Park and Preserve.

Geography

The Koyukuk River's headwaters are located in the Endicott Mountains, part of the Brooks Range. From there, it flows west and southwest into the Yukon River. The river's course takes it through a diverse range of ecosystems, from the alpine tundra of the Brooks Range to the wetlands and boreal forests of the Yukon lowlands.

Flora and Fauna

The Koyukuk River basin is home to a diverse array of flora and fauna. The river itself is a significant habitat for many species of salmon, and the surrounding forests and tundra are home to species such as the moose, grizzly bear, and caribou.

Human History

The Koyukuk River has been used by humans for thousands of years. The Koyukon people, for whom the river is named, have lived in the area for at least the last 1,000 years. The river was also used by gold miners during the Klondike Gold Rush at the end of the 19th century.

Health and Environment

The health of the Koyukuk River is of significant concern to both the people who live in its watershed and the wildlife that depend on it. Issues such as climate change, pollution, and overfishing have all had impacts on the river and its ecosystems.

See Also

• List of rivers of Alaska
• Yukon River
• Koyukon people