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处于信阳地区的淮河上游,由于受副热带高压和切变线的影响,今年6～7月份连降大到暴雨,共发生了四次大的洪水过程,信阳地区23天平均降雨500毫米,占当地历年汛期(6～9月)平均雨量的83%。对淮河堤防威胁较大。由于降雨过程较长,使前期流域蓄水量增大,土壤含水量接近饱和,第四次产生洪水最大,淮南五大水库有四座超汛限水位,其
In the upper reaches of the Huaihe River in Xinyang, due to the influence of the subtropical high and the shear line, the heavy rainfall even dropped from June to July this year. There were four major floods, with an average rainfall of 500 mm in 23 days in Xinyang, Over the years the flood season (June to September) the average rainfall of 83%. The embankment on the Huaihe River threat. Due to the long rainfall process, the water storage in the early watershed increased, the soil water content was nearly saturated, the fourth flood was the largest. There were four flood control water levels in the five major reservoirs in Huainan,