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The Chain of Lakes are a famous series of lakes in Central Florida. There are two chains of lakes, the northern chain and the southern chain. The northern chain extends across three cities; Winter Haven, Lake Alfred, and Lake Hamilton. It has ten lakes, connected by a series of canals.〔http://www.mywinterhaven.com/documents/comm_srvs_nr_20071001_WHAreaLakes_AmenitiesMap.pdf〕 The ten lakes on the northern chain are: Lake Haines, Lake Rochelle, Lake Echo, Lake Conine, Lake Fannie, Lake Smart, Lake Henry, Lake Hamilton (Florida), Middle Lake Hamilton, and Little Lake Hamilton.〔(【引用サイトリンク】title=Howard, Lake )〕 The southern chain is located almost entirely within the city of Winter Haven. It has 16, sometimes 18, lakes connected by a series of canals.〔 The principle 16 lakes on the southern chain are: Lake Howard, Lake Cannon, Lake Shipp, Lake Jessie, Lake Hartridge, Lake Lulu, Lake Roy, Lake Eloise, Little Lake Eloise, Lake Winterset, Little Lake Winterset, Lake May, Lake Mirror (Winter Haven), Lake Idylwild, Spring Lake (Winter Haven) and Lake Summit.〔 When water levels are high, Lake Blue and Lake Marianna also connect to the southern chain.〔Winter Haven Chain of Lake pre-BMAP Assessment, PBS&J, FDEP Contract #WM913, Sept 2008 pg1-2 http://www.swfwmd.state.fl.us/documents/numeric-nutrient/ATTACHMENT_R_PBSJ_BMAP.pdf〕 ==Hydrography== Winter Haven and the chain of lakes sit at the headwaters of the Peace River basin.〔 The southern chain has a total surface area of approximately .〔 The largest lake in the southern chain is Lake Eloise, with a surface area of .〔 The smallest lake in the southern chain is Spring Lake, with a surface area of .〔 Paleolimnological studies have shown that the chain of lakes should have naturally high levels of tannins, which are algae and plant nutrients in the water. This creates the brown water color. These levels are scientifically measured using the Trophic state index (TSI), and the chain of lakes should have TSI numbers of 60 or higher.〔Winter Haven Chain of Lake pre-BMAP Assessment, PBS&J, FDEP Contract #WM913, Sept 2008 pg1-3 http://www.swfwmd.state.fl.us/documents/numeric-nutrient/ATTACHMENT_R_PBSJ_BMAP.pdf〕 Currently, the majority of the lakes in both chains are officially listed as 'impaired' by the Florida Department of Environmental Protection.〔City of Winter Haven Memorandum, May 14, 2010, "Status of Nutrient Criteria / Impaired Waters in Winter Haven" http://www.polk.wateratlas.usf.edu/upload/documents/WinterHavenNutrientCriteriaMemoMay2010.pdf〕 This effects how 'swimmable' and 'fishable' the lakes are. The impaired lakes on the southern chain are: Lulu, Shipp, May, Howard, Mirror, Cannon, Jessie, Idylwild, Spring, and Roy. The impaired lakes on the northern chain are: Conine, Smart, Haines, Rochelle, and Hamilton.〔 These lakes have TSI numbers below 60. The chain of lakes, as the head waters of the Peace River, are important to the hydrological and environmental health of region. The city of Winter Haven, Polk County, the Southwest Florida Water Management District, the state of the Florida, and the federal government all have working projects to improve the water quality levels within the chain of lakes. Sometimes these projects work well with each other, sometimes they do not.〔 Rapid urbanization around the chain of lakes threatens their long term environmental health. Greater care by the residents in the area will be required to preserve the chain of lakes for future generations. 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「Chain of Lakes (Winter Haven)」の詳細全文を読む スポンサード リンク
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