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115 results
  • Cascade Mountain Range in Oregon

    The Cascade mountain system extends from northern California to central British Columbia. In Oregon, it comprises the Cascade Range, which is 260 miles long and, …

    Oregon Encyclopedia

  • National Forests in Oregon, 1892 to 1933

    The first forest reserves in the state were established in 1892-1893, although management of the federal forests did not begin until the summer of 1898. …

    Oregon Encyclopedia

  • Mount Thielsen

    With its summit spire towering a few hundred feet above less precipitous flanks, Mount Thielsen reigns over the High Cascades along the 38-mile stretch from …

    Oregon Encyclopedia

  • Siskiyou Mountains in Oregon

    Southwestern Oregon’s Siskiyou Mountains, which comprise the largest subrange of the Klamath Mountains, are distinctive in their geology, biology, and history. The rugged terrain includes …

    Oregon Encyclopedia

  • Willamette National Forest

      The Willamette National Forest stretches along the western slope of Oregon’s Cascade Range, from Mount Jefferson south to Windigo Pass near Diamond Lake. …

    Oregon Encyclopedia

  • Molalla Peoples

    The name Molalla ([moˈlɑlə, ˈmolɑlə], usually spelled Molala by anthropologists; also Molale, Molele, Molalis) refers to like-speaking Indigenous peoples who at the time of their …

    Oregon Encyclopedia

  • Thornton Munger (1883-1975)

    Thornton Taft Munger was the first director of the U.S. Forest Service's Pacific Northwest Forest Experiment Station (later the Pacific Northwest Forest and Range Experiment …

    Oregon Encyclopedia

  • Santiam Pass

    Santiam Pass, at an elevation of 4,817 feet, is a major highway crossing of the middle Cascade Range. Located on U.S. 20 at milepost 80.8, …

    Oregon Encyclopedia

  • Droughts in Oregon

    A standard dictionary definition for drought is “a prolonged period of abnormally low rainfall, leading to a shortage of water.” From a societal perspective, however, …

    Oregon Encyclopedia

  • Harmful Algae Blooms in Oregon

    The term “algae” is a generic description of a diverse group of single and multicellular aquatic plant organisms that produce energy and oxygen through photosynthesis. …

    Oregon Encyclopedia