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The Usva River ((ロシア語:Усьва)) is a river in Perm Krai in Russia, a right tributary of the Chusovaya River (Kama's basin). The river is long, and its drainage basin covers . The Usva freezes up in November and remains icebound until late April or early May. This is a lowland river for most of its course except upstream, where it has many rocks and rapids. Its banks are steep and rocky, covered with forests. The Usva crosses the Basegi range, which reaches in elevation at ''North Baseg''. There are seven localities on the banks of the river and some abandoned villages. The town of Chusovoy is at the confluence of the Usva and the Chusovaya rivers. Main tributaries: *Left: Vilva, Bolshaya Hariusnaya, Malaya Hariusnaya, Porozhnaya; *Right: Suriya, Berezovka, Persha, Tulumovka. == Etymology == The most believable explanation of the name is that it is a composite of the Komi-Permyak words ''usyny'' (to fall) and ''va'' (water); then it can be translated as "falling water". 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「Usva River」の詳細全文を読む スポンサード リンク
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