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汉江(也叫汉水、襄河),发源於陕西,流经鄂北,到汉口流入长江,全长约一千五百公里,流域面积一十七万四千平方公里,是我国长江干流的最大支流。汉江自马良以下流入平原,称为下游,长约三百三十公里;经过地区包括湖北省的十五个县和武汉市,共有耕地面积一千一百六十八万亩,人口六百七十八万,是富庶的粮棉产区。但因中上游流域面积广阔,占全流域的百分之八十以上,且多为山地,每年秋季暴雨集中,迳流浩大,常形成连续的洪水高峰;下游河道愈下愈窄,断面愈下愈小(如仙桃镇以下河槽断面仅及泽口以上的一半),旧有的一些分支如天门河、牛蹄河等,已相继淤缩堵
Han River (also known as Han River, Xiang River), originated in Shaanxi, flows through northern Hubei, Hankou flows into the Yangtze River, a total length of about 1,500 kilometers, the drainage area of 174,000 square kilometers, is China’s main stream of the Yangtze River The largest tributary. The Han River flows into the plains from below Ma Maliang and is called the lower reaches, about 330 kilometers in length. After passing through areas including 15 counties in Hubei Province and Wuhan City, the Han River has a total area of 11,668 mu of arable land and a population of 677 180,000, is rich in grain and cotton producing areas. However, due to the vast area of middle and upper reaches of the basin, accounting for more than 80% of the basin, and mostly mountainous, each autumn heavy rain concentrated, huge stream of current, often form a continuous flood peak; (Such as Xiantao below the river channel section and only Ze mouth more than half), some of the old branches such as Tianmen River, Niuti River, have been shrinkage blocked