黄河右岸一级支流,位于甘肃省临夏回族自治州积石山保安族东乡族撒拉族自治县,发源于海拔4308.8 m的积石山东麓,自西向东流经积石山县铺川、徐扈家、郭干、胡林家、安集、银川等6个乡镇后汇入刘家峡水库,流域面积450km2,流程48 km。多年平均流量2.31 m3/s,多年平均年径流量7285万m3。银川河上游主要有癿藏河、居集河两大支流。癿藏河流经小关、癿藏两个乡镇。居集河流经中咀岭、居集两个乡镇, A tributary of the right bank of the Yellow River, located in the Salar Autonomous County of Dongsheng in Jishishan, Shixinshan, Linxia Hui Autonomous Prefecture, Gansu Province, originates at the foot of Jishishan at 4308.8 m above sea level and flows through Yushichuan, Xuhujia and Guoqian , Hu Linjia, Anji, Yinchuan and other six towns after the import Liujiaxia Reservoir, the basin area of ​​450km2, the process of 48 km. The average annual flow of 2.31 m3 / s, annual average annual runoff of 72850000 m3. The main upstream Yinchuan River in Tibet, Juji two major tributaries. The Tibetan River flows through the small townships of Tibet and Tibet. Home River flows through the Central Tsui Ling, home set two townships,