沙河流域属大陆性气候,年降雨量的60%集中在6、7、8三个月,常常出现暴雨。加之山丘区面积占漯河以上面积的74%.以及上游三面环山的地形所致,洪水暴涨暴落,成为沙颍河区域洪水的重要发源地,而中下游河道渲泄能力小,且岸坡土质松软,极易坍塌,造成河道弯道多,险工多,目前防洪能力仅达10至20年一遇标准。 Shahe Basin is a continental climate, 60% of annual rainfall concentrated in 6,7,8 three months, often heavy rain. Combined with the hillock area accounted for 74% of the area above the Luohe, as well as the upper three sides of the mountain due to the terrain, the ups and downs of floods have become an important source of floods in the Shaying River region, while the middle and lower reaches of the river rendezvous ability is small, Soft, easily collapsed, resulting in many corners of the river, many dangerous jobs, the current flood control capacity of only 10 to 20 years once the standard.