为及时了解下游1982年8月洪水(以下简称“82·8”洪水)期间的洪水、河势、工程和漫滩等情况,先后派出了几个调查组进行了解,现将有关情况综述如下。一、河势变化“82·8”洪水期间,黄河下游兰考东坝头以下河势的基本流路无大变化,主要是河道整治工程发挥了控导作用。东坝头以上河段因整 In order to keep abreast of floods, river regimes, works and floodplains in the lower reaches of the flood in August 1982 (hereinafter referred to as “82.8 floods”), several investigation teams have been dispatched for understanding so far. The relevant situations are summarized as follows. I. Change of river regime During the flood of “82.8”, there was no major change in the basic flow path of the river regime below the Lankao east dam headway in the lower Yellow River, mainly because the river regulation works played a leading role. East dam over the river due to the whole