免渡河或門都克依河(蒙古語:ᠮᠢᠶᠠᠨ᠋
ᠳ᠋᠋᠋ᠦ᠋
ᠾ᠋᠋ᠧ
或
ᠮᠢᠶᠠᠨ᠋
ᠳ᠋᠋᠋ᠦ᠋
ᠭᠤᠤᠯ[1])位於中華人民共和國內蒙古自治區牙克石市南部,是海拉爾河左岸支流,發源於烏奴耳鎮以南大興安嶺北麓牛房山,蜿蜒向西北流經烏奴耳鎮、免渡河鎮及牙克石市區東郊,於市區以北莫拐農場附近匯入海拉爾河。河長194千米,流域面積6704平方千米,河道比降1.9‰,年均徑流量8.669億立方米。流域內森林密布,覆蓋率達60%以上。[2]
參考資料
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