Chilkat River

About

Chilkat River, Alaska — Chilkat Bald Eagle Preserve, Late-Run Chum, Tlingit. The Chilkat is a mild-water river by whitewater reckoning, rated Class I–II, with an average flow near 1,400 cubic feet per second recorded at USGS gauge 15056500. Optimal paddling flows run from roughly 500 to 4,000 CFS. But the river's fame rests less on its rapids than on its fish and the birds those fish sustain. The Chilkat is internationally known for a late-season chum salmon run that arrives October through December—so late that it draws bald eagles from across the region to a river that, elsewhere, would already be frozen. Warm groundwater upwellings keep key reaches open, and by November up to 3,000 to 4,000 eagles congregate along the geothermal upwelling stretch.

This has been Tlingit homeland since long before contact. The Chilkat is the territory of the Jilkáat Ḵwaan—the Chilkat Tlingit—who have lived along the river for thousands of years. The village of Klukwan, on the upper Chilkat at the confluence of the Chilkat and Klehini rivers, is one of the oldest continuously occupied Tlingit settlements in Alaska. It served as the principal traditional village and a Tlingit stronghold through the 19th-century Russian-American and American eras, and the Chilkat Trail was a major pre-contact trade route linking the Tlingit coast to interior Athabascan nations.

The watershed's industrial history is comparatively brief. The Chilkat corridor was logged from the 1830s through the 1920s to support the regional timber industry and railroad expansion, worked by local sawmills, logging drives, and downstream lumber operations. That era wound down as the old-growth stands were exhausted around 1910, state forestry conservation began in 1915, and state forests were established in the 1930s. Sustained Euro-American contact had come earlier, with the 1880s–1910s era of commercial fishing, followed by a 1920s–1940s mining era on the Klehini tributary. Early hydrological study came through USGS surveys and gauging stations established across the late 19th and early 20th centuries.

The river reads in three distinct sections. The Upper Chilkat, running 15 miles from Klukwan to the Tsirku confluence, holds Dolly Varden and char. The Middle Chilkat covers 20 miles from the Tsirku to Chilkat Lake and fills with sockeye in July. The Lower Chilkat runs 17 miles from the Haines Highway to the estuary, where silver salmon and eagle viewing share the water. Beyond the chum, the river carries a king salmon run that supports a separate summer fishery.

Today the Chilkat holds a layered set of designations: the Alaska Chilkat Bald Eagle Preserve, established in 1982 and administered by Alaska State Parks; the Tongass National Forest; and an ADF&G-managed salmon fishery. American Rivers lists it among its Most Outstanding Rivers for its ecological and cultural values. Yet the river's future is unsettled. In 2026 the Chilkat was named one of America's Most Endangered Rivers, imperiled by a proposed copper and zinc mine that threatens the salmon and the eagles their abundance feeds—a reminder that this ancient watershed still depends on vigilant protection.