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Nine-Mile Island (Mississippi River) : ウィキペディア英語版 | Nine-Mile Island (Mississippi River)
Nine-Mile Island is a river island located in Mosalem Township, Dubuque County, Iowa, between Dubuque, Iowa and Bellevue, Iowa on the Upper Mississippi River. ==Geography== Nine-Mile Island is situated within Pool 12 of the Upper Mississippi River, between Locks and Dams Nos. 11 and 12. The head (northwestern end) of the island is at UMR river mile 574.3, with the southeastern end at mile 571.5. It is about 2 miles long and .5 mile at its widest point, with a total area of 454 acres.〔(【引用サイトリンク】title=Electronic Code of Federal Regulations )〕 The island is immediately downriver from Frentress Lake, site of a popular marina in East Dubuque, Illinois and the former dock of the Silver Eagle Casino. It is adjacent to the unincorporated community of Massey, Iowa, which houses marina facilities. The island is bordered on the southwest by Molo Slough and on the northeast by the USACE's nine-foot navigation channel. Since it is on the Mississippi River, Nine-Mile Island is on the extreme eastern side of Iowa, adjacent to its border with Illinois. The USACE also maintains two aids to navigation on the island: Nine-Mile Island Daybeacon at UMR river mile 573.5, and Nine-Mile Island Light at mile 571.5, both on the right descending bank.〔(【引用サイトリンク】title=Upper Mississippi River Navigation Charts )〕
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