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Bear Lake is a natural freshwater lake on the Utah-Idaho border in the Western United States. About in size, it is split about equally between the two states; its Utah portion comprises the second-largest natural freshwater lake in Utah, after Utah Lake.〔(Bear Lake history & facts ). ''Utah Division of Wildlife Resources.''〕 The lake has been called the "Caribbean of the Rockies" for its unique turquoise-blue color, which is due to the reflection of calcium carbonate (limestone) deposits suspended in the lake.〔(Bear Lake State Park ). ''Utah.com''〕 Its water properties have led to the evolution of several unique species of fauna that occur only within the lake.〔(Bear Lake Geological Background: Endemism ). ''U.S. Geological Survey''.〕 Bear Lake is over 250,000 years old.〔(See Rosenbaum and Kaufman, 2009 )〕 It was formed by fault subsidence that continues today, slowly deepening the lake along the eastern side.〔(Bear Lake Geological Background: Tectonism ) ''U.S. Geological Survey''.〕 Originally named "Black Bear Lake" by Donald Mackenzie, an explorer for the North West Fur Company who discovered the lake in 1819, the name was later changed to Bear Lake.〔(Bear Lake State Park: In Depth ). ''Utah State Parks and Recreation.''〕 The lake is a popular destination for tourists and sports enthusiasts, and the surrounding valley has gained a reputation for having high-quality raspberries.〔(Bear Lake Raspberry Days ). ''Utah Outdoor Activities''.〕 ==History== The first known inhabitants of the Bear Lake Valley were Shoshone tribes, but the area was known to many Native Americans. The first record of whites seeing the lake is from 1818 when French-Canadian trappers working for the North West Company followed the Bear River upstream to the valley. The south end of the lake, in the area of modern day Laketown, was the location of a rendezvous in the summer of 1827 and 1828. Mountain men, including Jedediah Smith and Jim Bridger, gathered at this location, along with trade goods suppliers, and American Indians from several different tribes. The mountain men and Indians sold their furs in exchange for various store goods and supplies, and several weeks were spent reveling in assorted amusements and liquor.〔(【引用サイトリンク】title= Mountain Man Rendezvous Sites )〕 Smith's arrival in June 1827 was especially historic, as it marked the completion of the first ever overland round-trip to California from the United States. As he wrote in his journal: "My arrival caused a considerable bustle in camp for myself and party had been given up as lost."〔Smith, Jedediah S., (G. Rogers ), and George R. Brooks (ed.). ''The Southwest Expedition of Jedediah S. Smith: His Personal Account of the Journey to California, 1826–1827'', p. 197. Lincoln and London, University of Nebraska Press, () 1989. ISBN 978-0-8032-9197-3〕 Although the lake lies relatively near the Oregon Trail, which runs north and east of the lake, and was traveled by many pioneers between 1836 and the 1850s, it seems none of them went south enough to view the lake. It wasn't until 1863 that Mormon pioneers led by Charles C. Rich settled in the Bear Lake Valley, but they made an agreement with Native Americans which left most of the Utah portion of the valley in Indian possession. The Mormons gradually moved south and established the villages of Garden City, Pickelville, and Laketown, each along the lake's shore. In later years, Bear Lake became a resort and recreation area, with many developers selling lake shore and mountain view lots. The beaches of Lakota and Ideal were given to private development in the 1970s, including the Blue Water and Sweetwater developments. The State of Utah bought the far southeast beach for use as a State Park, and also operates a marina on the lake's west side. Environmental concerns have arisen with the ongoing development of the area. The lake is diked on the Idaho side and downstream Bear River water users use it as a reservoir. 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「Bear Lake (Idaho–Utah)」の詳細全文を読む スポンサード リンク
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