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Six Rivers National Forest is a U.S. National Forest located in the northwestern corner of California. It was established on June 3, 1947 by U.S. President Harry S. Truman from portions of Klamath, Siskiyou and Trinity National Forests. Its over one million acres (4,000 km2) of land contain a variety of ecosystems and of old growth forest. It lies in parts of four counties; in descending order of forestland area they are Del Norte, Humboldt, Trinity, and Siskiyou counties. Six Rivers is named after the six major rivers that pass near or through the forest and include: * the Eel River * the Van Duzen River (tributary of the Eel) * the Klamath River * the Trinity River (tributary of the Klamath) * the Mad River * the Smith River The forest has 366 miles (589 km) of wild and scenic rivers, six distinct botanical areas, and public-use areas for camping, hiking, and fishing. The northernmost section of the forest is known as the Smith River National Recreation Area. Forest headquarters are located in Eureka, California. There are local ranger district offices in Bridgeville, Gasquet, Orleans, and Willow Creek.〔(USFS Ranger Districts by State )〕 Its old-growth forests include Coast Douglas-fir (''Pseudotsuga menziesii var. menziesii''), Tanoak (''Lithocarpus densiflorus''), Pacific madrone (''Arbutus menziesii''), and White Fir (''Abies concolor'').〔 == Wilderness areas == There are five designated wilderness areas in Six Rivers National Forest that are part of the National Wilderness Preservation System. Two of them lie mostly in other National Forests or on Bureau of Land Management land. * Mount Lassic Wilderness * North Fork Wilderness * Siskiyou Wilderness (partly in Klamath NF) * Trinity Alps Wilderness (mostly in Trinity NF; partly in Shasta NF, Klamath NF, or on BLM land) * Yolla Bolly-Middle Eel Wilderness (mostly in Mendocino NF; partly in Trinity NF, or BLM land) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Six Rivers National Forest」の詳細全文を読む スポンサード リンク
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