北洛河是黄河流域渭河水系兩大支流之一,發源于陝西定边白于由南麓石澇池,河源分为三支,西支为石涝河,中支为狼兒溝,东支为乱石头川,在吳旗匯流后称为洛河(为別于伊洛河水系的洛河,所以一般称北洛河)。东南流經志丹、甘泉、鄜縣、洛川、黄陵、宜君、澄城、白水、蒲城、大荔、朝邑等十一縣,在華阴縣境之葫蘆灘入渭,全长596公里,流域面积31,400平方公里。地理位置約在北纬34°40′,～37°20′,东经107°35′～110°8′之間。流域西以子 North Luo River is one of the two major tributaries of the Weihe River system in the Yellow River Basin, originating from Dingbai, Shaanxi white from the south of the stone pool, Heyuan is divided into three branches, the West Branch of the Stone River, the branch for the wolle ditch, the East Branch Stone for the chaos, in Wujiang confluence after the river called Luo (not to the Yiluo River Luohe, it is generally called the North Luohe). Southeast flows through Zhidan, Oasis, Pixian, Luochuan, Huangling, Yijun, Chengcheng, Baishui, Pucheng, Dali, Chaoyi and other eleven counties in Huayin County Hulu beach into Wei, all 596 kilometers long, the basin area of ​​31,400 square kilometers. The geographical location is about 34 ° 40 ’north latitude, ~ 37 ° 20’ east longitude 107 ° 35 ’~ 110 ° 8’. Waters west to son