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一、白龙江河道的基本情况白龙江发源于岷山北麓,自西向东,经碧口流入四川昭化汇入嘉陵江。全长570多公里,流域面积32,252平方公里。白龙江与一般河流一样,具有上游比降大,水量小,下游比降小,水量大的特点。迳流补给主赖冬季积雪和夏秋降水。4—10月降水量约为全年的95％。从多年平均流量值看,4月开始涨水以后逐月增大,7—9月为洪水期,11月至次年3月为枯水期。白龙江干流分为上、中、下三段。上游从河源至洛大,河道长209公里,白云以上水
First, the basic situation of Bailongjiang Bailongjiang originated in the northern foot of Minshan, from west to east, the Bikou flows into Sichuan Zhaoyan into the Jialing River. More than 570 kilometers in length, the basin area of 32,252 square kilometers. Like the general rivers, Bailong River has the characteristics of larger upstream ratio, smaller water volume, lower downstream ratio and larger water volume. Succubus relies on winter snow and summer precipitation. April-October precipitation is about 95% of the year. From the average flow value for many years to see, since April began to rise after the monthly increase, July-September for the flood period, November to March next year for the dry season. Bailongjiang mainstream is divided into upper, middle and lower three sections. Upstream from Luyuan to Luo, river 209 km long, white clouds above water