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黑河发源于祁连山北麓,干流全长821公里。出山口莺落峡以上为上游,河道长303公里,面积1.0万平方公里,两岸山高谷深,河床陡峻,气候阴湿寒冷,植被较好,年降水量350毫米,是黑河流域的产流区;莺落峡至正义峡为中游,河道长185公里,面积2.66万平方公里,两岸地势平坦,光热资源充足,但干旱严重,年降水量仅有140毫米,蒸发能力达1410毫米,人工绿洲面积较大,部分地区土地盐碱化严重;正义峡以下为
Heihe originated in the northern foot of the Qilian Mountains, the total length of 821 kilometers of the mainstream. Over the Outfall of Yingluo Gorge at the mouth of the upper reaches of the upstream, the river 303 km long, an area of 10,000 square kilometers, both sides of the mountains and valleys deep, steep riverbed, cold and humid climate, vegetation is good, the annual rainfall of 350 mm, is the Heihe River Basin ; Yingluo Xia to Zhengyi Gorge is the middle reaches of the river 185 km long, an area of 26,600 square kilometers, flat terrain, sufficient light and heat resources, but the drought is serious, the annual rainfall is only 140 mm, the evaporation capacity of 1410 mm, artificial oasis Large area, serious salinization of land in some areas;