Alagnak Wild River protects 67 miles of the upper Alagnak River and the 11-mile Nonvianuk tributary on the Alaska Peninsula, roughly 290 miles southwest of Anchorage. It was designated as one of the wild rivers brought into the National Wild and Scenic Rivers System by the Alaska National Interest Lands Conservation Act of 1980 - the sweeping law that also established most of Alaska's modern national parks and preserves. The Alagnak flows west out of Kukaklek Lake, which sits inside Katmai National Park and Preserve, and drops across the peninsula to the Kvichak River and Bristol Bay. Despite the wild designation, Alaska Natives still own portions of the land along the corridor, and traditional subsistence hunting and fishing continue on the river - a reality baked into the unit's founding legislation. The river's character is defined by its salmon and its bears. All five species of Pacific salmon run the Alagnak, with sockeye returns in the hundreds of thousands and king, chum, pink, and silver runs all represented; combined with resident rainbow trout, Arctic char, Dolly Varden, and Arctic grayling, the Alagnak supports one of the most productive sport fisheries in Alaska and draws fly anglers from around the world. The salmon concentrate brown bears in numbers rarely seen on protected rivers - Alaska Peninsula brown bears fish the riffles, sows lead cubs along the banks, and large boars contest the best holes. Moose, caribou, wolves, wolverines, beaver, fox, and otter all live in the corridor as well. The hydrology and the name tell the other story. In Yup'ik, alagnak translates roughly as "making mistakes" - a reference to the river's dynamic channels, which shift, split, and re-braid each year, sometimes abandoning entire channels. Locally the river is still called the Branch River for exactly that reason. The upper reach above the Nonvianuk confluence runs slowly through open tundra; the middle section threads a narrow canyon about seven miles long with a Class III gorge that is difficult to portage or line due to vertical walls; the lower reaches braid heavily across the peninsula. There are no roads, no NPS facilities, and no developed access within the unit. Visitors arrive by floatplane from King Salmon, typically landing on Kukaklek or Nonvianuk Lake to begin multi-day raft trips, or staying at one of several private fishing lodges along the lower river. Class I-II water dominates, with the canyon section the one technical passage. Bear encounters are constant rather than occasional and require genuine bear-country competence. Administrative office is in King Salmon, AK, co-located with Katmai's headquarters.