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The official Siuslaw National Forest Facebook page is a combined effort of Discover Your Northwest and the Siuslaw National Forest. Four major rivers flow out of the Siuslaw National Forest into the Pacific Ocean: the Nestucca, Alsea, Siuslaw, and Umpqua providing excellent habitat for anadromous fish. Many other smaller streams and tributaries add to the annual route salmon and steelhead take to their ancestral spawning ground. Abundant rainfall and mild winters provide growing conditions for a variety of vegetation species. The Siuslaw’s temperate rain forest, coastal influence, ocean-forest interface, relatively young Douglas-fir forest, and cultural history make it unique among all other national forests. The Siuslaw has two distinct vegetation zones, Sitka spruce and western hemlock. The hardy Sitka spruce zone grows where the coast influence of mild temperatures, winds, and dense fog discourage other types of vegetation. Western hemlock grows well in shade beneath the dense Douglas-fire canopy. As Douglas fir matures, western hemlock takes over. Both zones contain freshwater, upland, offshore, and estuarine habitats that support a wide variety of vegetation, fish, and wildlife. The climate of the Siuslaw is best described as a Pacific maritime with recorded rainfall of up to 100 inches per year in some parts of the Forest. Temperatures are moderate, averaging in the '30s to '40s during the winter with a very occasional snowfall. Summers are warm and dry, with cooler temperatures along the coast, warming up as you travel inland.

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