1975年8月5日至8日,淮河上游洪汝河流域,以泌阳县林庄为中心降落了一场罕见的特大暴雨。汝河支流臻头河上的薄山水库,距暴雨中心很近,库水位迅猛上涨,水库管理局对外通汛联络和交通全部中断,情况万分紧急。7日下午至夜间,水库水位接连超过设计水位、校核水位,水势仍在继续上涨。在这千 August 5, 1975 to August 8, the upper reaches of the Huaihe River Basin, to Biyang Lin Zhuang as the center of a rare heavy rainfall. The thin river reservoir on the head of Zhen River, a tributary of the Ru River, is very close to the rainstorm center. The water level of the reservoir rises rapidly. All the traffic and flood control of the reservoir management bureau are totally interrupted. The situation is extremely urgent. On the afternoon of the 7th to the night, the water level of reservoirs successively surpassed the design water level, water level was checked and the water potential continued to rise. In this thousand