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Left Hand Creek is a tributary of Saint Vrain Creek, approximately long,〔U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. (The National Map ), accessed March 25, 2011〕 in Boulder County, Colorado in the United States. The creek drains a section of the foothills of the Front Range northwest of Boulder, descending from the mountains in a steep canyon, known as Left Hand Canyon. Left Hand Creek issues from Left Hand Park Reservoir along the north flank of Niwot Mountain. Flowing through a steep gorge to the East, passing below Ward (which sits roughly at the head of the canyon). It emerges from the foothills North of Boulder and crosses ranch lands the Colorado Piedmont, passing north of Niwot and joining St. Vrain Creek on the South edge of Longmont. Lower Left Hand canyon is a popular destination for road biking, hiking, whitewater kayaking and rock climbing. It contains several City of Boulder Open Space parks along the Boulder County road that ascends into the canyon from U.S. Highway 36 north of Boulder. The canyon rims provide habitat for raptors and are seasonally closed to rock climbing during the late winter and early spring during nesting season. The creek was named for Chief Left Hand of the Arapaho Indians. In 1859, during the Colorado Gold Rush, the canyon was the site of an early discovery of gold at Gold Hill located on a side gully approximately halfway up the canyon. Left Hand Creek experienced a significant flood event in September 2013. This flood killed one resident of Jamestown in a debris flow from an adjacent ravine in the town. The flood of September 2013 considerably redistributed stream sediment and re-channelized the stream bed in places. Mitigation and recovery efforts in the town of Jamestown and for all Left Hand canyon residents is ongoing in 2015. An obscure kayak run until 2000, Left Hand Canyon was first run in 1998 by Brook Aitken, Chris McEniry, Craig D. Irwin, and Mitchaleneous K Benning. The kayakers first descended the Class V mini-gorge by entering through a small culvert passing under Left Hand Canyon Drive and beginning a tight and snaking boulder garden entrance through a cascade along the road. The City of Boulder Mountain Parks and Open Space has one parking facility at Buckingham Park. ==See also== * List of rivers of Colorado * 2013 Colorado floods 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「Left Hand Creek (Colorado)」の詳細全文を読む スポンサード リンク
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