翻訳と辞書 Words near each other ・ River Oaks Elementary School (Houston) ・ River Oaks Garden Club Forum of Civics ・ River Oaks International Tennis Tournament ・ River Oaks Shopping Center ・ River Oaks Theatre ・ River Oaks, California ・ River Oaks, Houston ・ River Oaks, Texas ・ River Ock ・ River Ock (disambiguation) ・ River Ock, Surrey ・ River of Blood ・ River of Blue Fire ・ River of Darkness ・ River of Death ・ River Lee Flood Relief Channel ・ River Leen ・ River Lees ・ River Legend ・ River Leith ・ River Lemon ・ River Len ・ River Lethe ・ River Lethe in popular culture ・ River Lett ・ River Leven ・ River Leven, Cumbria ・ River Leven, Dunbartonshire ・ River Leven, Fife ・ River Leven, North Yorkshire Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク River Lee Flood Relief Channel ： ウィキペディア英語版 River Lee Flood Relief Channel The River Lee Flood Relief Channel (FRC) is located in the Lea Valley and flows between Ware, Hertfordshire, and Stratford, east London. Work started on the channel in 1947 following major flooding and it was fully operational by 1976. The channel incorporates existing watercourses, lakes and new channels. ==Design== Flood defences are rated according to the probability that a particular level of flood water will be exceeded at least once in a specific period, so a 100-year flood represents a level that would only be expected to occur once in 100 years. This is often known as 1 per cent protection. The level of flooding in 1947 was estimated to be a 1.4 per cent occurrence, and the flood channel, when it was first designed, was built to cope with this level of flooding. Since it was completed in 1976, there have been no major flood events in the Lea Valley, although there have been three occasions when the river system was full virtually to its capacity: in 1987, 1993 and 2000. Since its completion, the level of protection afforded by the structure has declined, so that in some areas it offers 2 per cent protection, and in some, only 5 per cent protection. The Environment Agency published a strategic environmental assessment in 2008, which looked at ways to maintain the flood defences in the Lea Valley. 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「River Lee Flood Relief Channel」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.