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North Shore Channel : ウィキペディア英語版 | North Shore Channel
The North Shore Channel is a drainage canal built between 1907 and 1910 to flush the sewage-filled North Branch of the Chicago River down the Chicago Sanitary and Ship Canal. The sewage carrying duty has been largely taken over by the Chicago Deep Tunnel, but there are still occasional discharges due to heavy rains.〔(【引用サイトリンク】url=http://www.wilmette.com/departments/public_works/combinedsewerover.aspx )〕 ==Geography== The North Shore Channel flows from Lake Michigan to the North Branch of the Chicago River.〔("Where is the Chicago River?" ), Friends of the Chicago River. Retrieved August 18, 2014. "The Upper North Branch then continues to flow south through Niles into the city of Chicago, where it combines with the North Shore Channel at River Park and forms the North Branch of the Chicago River. The North Shore Channel starts in Wilmette flows through Skokie, Evanston and Lincolnwood to Chicago."〕 A sluice gate usually prevents the canal from back-draining out to Lake Michigan in Wilmette, although the gate must be opened occasionally to prevent downstream flooding.〔 The north end of the channel is near the Bahá'í House of Worship. The channel flows southwest, and then south, through or near Wilmette, Evanston, Skokie, and Lincolnwood, and into Chicago. The south end of the channel flows into the North Branch at approximately 5100 north and 3000 west in the Chicago street address numbering system. Chicago's only waterfall within the city limits, which looks like a concrete spillway, is in River Park, where the upper North Branch drops about through a dam into the confluence.〔("Chicago River Water Trails" ), Openland. Retrieved August 23, 2014.〕 In 1999, the system of which the canal is a part was named a Civil Engineering Monument of the Millennium (as part of the Chicago wastewater system) by the American Society of Civil Engineers (ASCE).〔(【引用サイトリンク】title=Chicago Wastewater System )〕
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「North Shore Channel」の詳細全文を読む
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