Nonvianuk River
The Alagnak River, originating in Katmai National Preserve’s Kukaklek and Nonvianuk Lakes, has abundant wildlife, including brown bear, moose, beaver, river otter, bald eagle, and osprey. Visitors enjoy the fishing along this clear, braided river, as well as the striking changes in landscape, large undeveloped lakes, boreal forest, wet sedge tundra, shrubby islands, and Class I-III rapids. The Alagnak River consists of two distinct river segments—the Alagnak and the Nonvianuk Rivers. Approximately 83% of the lands within the Alagnak River corridor are federally owned; the remaining 17%
River conditions are community-verified. CFS ranges, difficulty ratings, and access points may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level.