Anvik River

The Anvik River (Yup'ik: Tuilnguq) is a 140-mile (230 km) tributary of the Yukon River in the U.S. state of Alaska. It flows southeast from the Nulato Hills to its mouth on the larger river 1.5 miles (2.4 km) north of Anvik. The watershed is classified is characterized by seasonal flooding, high sediment loads, and permafrost influence. Geological surveys describe the Anvik-Andreafski region as dominated by schist, quartzite, and alluvial deposits, which contribute to the river's sediment load and seasonal flow variations. The river's annual discharge patterns significantly impact fish migration and habitat conditions, particularly salmon species. The annual production of summer chum salmon (Oncorhynchus keta) along the Anvik River is thought to be the largest in the Yukon River basin. The river has excellent fishing for four species of salmon as well as northern pike, sheefish, Arctic char, rainbow trout, and grayling. Rated Class 1 (easy) on the International Scale of River Difficulty, about 121 miles (195 km) of the Anvik is suitable for floating by open canoes, folding boats and kayaks, and inflatable canoes, kayaks, and rafts. Floatplanes, riverboats, and wheeled airplanes that can land on gravel bars can transport boaters as far as McDonald Creek, near the headwaters.

Flows through: United States.

River data from Wikidata (CC0); lengths normalised to a common unit.