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Islais Creek or Islais Creek Channel (previously known as Du Vrees Creek, Islais Channel and Islais Swamp)〔According to the (URL--> Geographic Names Information System by USGS ), other lesser known variant names for Islais Creek or Islais Creek Channel include Arroyo Islais, El Arroyo De Los Yslais, Islar Creek, and Du Urees Creek.〕 is a small creek in San Francisco, California. The name of the creek is derived from a Salinan Native American word "''slay''" or "''islay''", the name for the ''Prunus ilicifolia'' wild cherries. Around the time of the Gold Rush, the area became an industrial hub, and the condition of the creek worsened. After the devastating earthquake in 1906, the city decided to reclaim the creek using earthquake debris, reducing the waterbody to its present size. Though much of Islais Creek has been converted to an underground culvert, remnants still exist today at both Glen Canyon Park and Third Street. Several community organizations are dedicated to preserve these remnants, as they are important wildlife habitats. ==Course== The historic Islais Creek, the largest body of water in the city covering an area of nearly ,〔 had two main branches. One originated near the southern slope of Twin Peaks, slightly north of Portola Drive. It flowed downstream southeastward through the Glen Canyon Park paralleling Bosworth Street and eventually reaching the bottom of the Mission Street viaduct at I-280. The other branch began at the intersection of Cayuga Avenue and Regent Street. It flowed generally eastward along Mission Street and reached the I-280 viaduct. Together, as a wider creek, it ran parallel to Alemany Boulevard and I-280 and emptied into the Islais Creek estuary, near Industrial Street and Oakdale Avenue.〔 Precita Creek, a nearby creek that originated from Noe Valley, also joined Islais Creek at the César Chávez Boulevard and Evans Avenue intersection. From its sources in the Glen Canyon, the entire creek stretched about to the San Francisco Bay. The mouth was nearly wide, providing up to 85% of the drinking water in San Francisco.〔〔 Due to urban development, however, the watershed of Islais Creek has been reduced by roughly 80% from its historical extent.〔 A large number of neighborhoods in San Francisco today, such as Bernal Heights, Hunters Point, Visitacion Valley, parts of the Mission and Potrero Hill, was once covered by the extent of the creek. In 2007, the San Francisco Public Utilities Commission, which manages the city's water, began investigating the possibility of "daylighting" underground portions of the creek.〔(【引用サイトリンク】title=Urban Watershed Planning )〕 As of 2009, remnants of the creek remain inside the Glen Canyon Park〔 and a channel near Third Street where Islais Creek emptied into the bay. 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「Islais Creek」の詳細全文を読む スポンサード リンク
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