The Koyuk River is a river located in western Alaska, flowing into the Bering Sea. It is approximately 150 miles long and is known for its winding path through the Koyukuk National Wildlife Refuge. The river is an important habitat for various wildlife species and supports local ecosystems. The Koyuk River is also significant for the Koyuk community, which relies on it for subsistence fishing and transportation. The river's waters are rich in salmon, making it a vital resource for both the local economy and cultural practices. Its natural beauty attracts visitors interested in outdoor activities like fishing and kayaking.