Hoh River - Natural History

Natural History

A significant part of the Hoh River flows through the Hoh Rainforest, a relatively rare example of a temperate rain forest. Abundant winter rainfall results in a lush green canopy of coniferous and deciduous trees, often covered with mosses and ferns. Annual precipitation is 140 to 170 inches (3,600 to 4,300 mm). According to the National Park Service the Hoh Rain Forest is one of the finest remaining examples of temperate rain forest in the United States. It is one of the most popular destinations of Olympic National Park. Giant Western Hemlock, Douglas-fir, Thuja plicata (Western Red Cedar), and Sitka Spruce trees dominate the landscape, while ferns and mosses cloak the trees and forest floor. Fallen trees often become nurse logs.

When Olympic National Park was created in 1938 one of its primary objectives was to protect the herds of Roosevelt elk. Today about 400 of the park's 4,000-5,000 elk live in the Hoh River valley.

The Hoh River supports a variety of salmonid fish, including spring and fall chinook, coho salmon, winter and summer steelhead trout, and sea-run cutthroat trout. There are also smaller numbers of chum and sockeye salmon. The Hoh River fishery is managed by the Hoh tribe in cooperation with the Washington Department of Fisheries.

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