潮河、白河在密云县城南汇合为潮白河。密云水库就是拦截潮自河而成。 潮河、白河上游河道都是在山区，弯弯曲曲，急流缓流河道很多，汛期经常洪水涨落不定，两岸及河道内大小河卵石到处可取，要想定点垂钓就要采取以下方法： 一、选位：每年五六月份以后汛期来临，河水困降雨 Chao River, the White River in Miyun County converges to the Chaobai River. Miyun Reservoir is to intercept the tide from the river. Tidal river, the upper reaches of the Shirakawa River are in the mountains, winding, a lot of slow-flow rivers, the flood often fluctuate, cross-strait and river pebbles in large and small desirable everywhere, in order to point the fishing will take the following methods: First, Location: every year after the arrival of the flood season in May and June, the river was stormy