鸿沟是始开掘于战国时代的一条重要人工运河,其主干道到汉代又称浪荡渠。浪荡渠起于河、济,东至陈留折向南,最终汇入颖水。鸿沟水系包括主干道浪荡渠及其众多分支,主要分支有涡水、涣水、睢水、汳水等。这些河流是组成中国东部水陆交通网的重要一环,促进了当时经济发展。西汉末年,由于黄河泛滥,鸿沟水系诸水淤塞。 Gap is the beginning of digging in the Warring States Period, an important artificial canal, the main road to the Han Dynasty, also known as the wave channel. Swirling Drainage in the river, economy, Chen left to the east confluence, and ultimately remitted Yingshui. The chasm water system includes the main channel of the excitant channel and its many branches, the main branch of the eddy water, water, water, water and so on. These rivers constitute an important part of the water and land transportation network in eastern China and promote the economic development at that time. The late Western Han Dynasty, due to the flooding of the Yellow River, water diversion of the water silting.