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The Omolon River ((ロシア語:Омолон)) is the principal tributary of the Kolyma River in northeast Siberia. The length of the river is . The area of its basin is . The Omolon River freezes up in October and stays under ice until late May through early June. The lower are navigable. It begins in the Magadan Oblast less than from the Sea of Okhotsk, flows north, forms part of the border of Magdan and Chukotka, crosses Chukota, briefly enters the Sakha Republic and joins the Kolyma about from the Arctic. Its basin is surrounded by: (west) branches of the Kolyma, (south) Penzhina River and others that flow south, (east) Anadyr River and (northeast) Bolshoy Anyuy River. The upper Omolon is subalpine in the highlands, the middle is boreal forest and the lower part tundra. There is a Zakaznik in Chukotka to protect the forests. Its main tributaries are the Molongda, the west-flowing Oloy River (at , the largest tributary), Oloychan, Kedon. ==References== * (Omolon river problems ) * * (Meteorite found near the Omolon River ) 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「Omolon River」の詳細全文を読む スポンサード リンク
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