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Ubort River ((ロシア語:Уборть)) is a river in Zhytomyr Oblast (Ukraine) and Homiel Voblast (Belarus), a right tributary to the Pripyat River, in the Dnieper river basin.〔 in ''Słownik geograficzny Królestwa Polskiego'' (''Geographical Dictionary of the Kingdom of Poland'') volume XII, page 734, (1892)〕 The Ubort River is fed mostly by snow melt (~70%), and peaks during the Spring run-off, usually mid March to early May, and maintains an even, albeit lower, flow during the summer months. It can freeze up as early as mid November or as late as January, and the ice breaks up as early as mid February or as late as mid April. It was contaminated during the Chernobyl disaster. ==Course== The Ubort River originates in the hills above and south of the village of Andreyevichi〔, United States National Geospatial-Intelligence Agency〕 in Zhytomyr Oblast. It arises at , elevation 207 m., from a series of small creeks flowing westward off of the Simony Hills, elevation 222 m, and northeastward off of the Marynivka Hills, elevation 225 m. The river flows north past Yemilchyne and Olevsk, thence across the international border into Belarus near Borovoye〔, United States National Geospatial-Intelligence Agency〕 (Баравое). It then flows northeast and north past Lelchytsy, and Moiseyevichi, before entering the Pripyat at Pyetrykaw. The mouth of the river is at with an elevation of 120 meters. The principle tributaries〔Other tributaries are the Бересток, Мала Глумча, Зольня, Телина, Угля, Мудрич, Божанка, and Силець.〕 of the Ubort are the 67 km Prega River (Перга) with its mouth at in the Ukraine, and the 58 km Svidovets (Свидовець) with its mouth at in Belarus.〔 in ''Słownik geograficzny Królestwa Polskiego'' (''Geographical Dictionary of the Kingdom of Poland'') volume XI, page 649, (1890)〕 The river has a low incline dropping only 87 meters over its 292 kilometer length. The result is a meandering river with lots of swamps and oxbox lakes. The area of its drainage basin is . The average annual flow of water at the mouth of the Ubort River is 24.4 Cubic metres per second. 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「Ubort River」の詳細全文を読む スポンサード リンク
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