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汉水(即汉江,又叫襄河),位於长江中游,全长1,500公里,流域面积174,000平方公里,约在东经106°12′至114°14′,北纬30°08′至34°11′之间,地跨陕西、湖北、河南、四川四省,其流域面积,约占长江全部流域面积十分之一,是长江的最大支流。汉水发源於陕南,有北、中、南三源。中源出宁羌县之嶓?山,叫做漾水,据‘禹贡’载称:‘嶓?导漾,东流为汉。’故从历史习惯,以中源漾水为汉水之正源。漾水东流到沔县西,北源沮水与南源南河汇入,水势渐大,称为沔水;沔水东南流至汉中(即南郑县),始称汉水,再流到襄阳,又叫襄河。干流经过陕西、湖北两省20个县,在汉口流入长江。
Han River (also known as the Han River, also known as Xiang River), located in the middle reaches of the Yangtze River, a total length of 1,500 km, the basin area of 174,000 square kilometers, about longitude 106 ° 12 ’to 114 ° 14’, latitude 30 ° 08 ’to 34 ° 11’ Between the four provinces of Shaanxi, Hubei, Henan, Sichuan, the basin area, accounting for about one tenth of the Yangtze River basin area, is the largest tributary of the Yangtze River. Han River originated in southern Shaanxi, North, Central and South three sources. In the source of Qiangxian Qiu? Hill, called Yang water, according to ’Yu Gong’ contains: ’嶓 嶓 guide Yang, east flow for the Han. ’Therefore, from the historical tradition, Yang source water for the source of Han River. Yangshui eastward flow to Pixian West, North source of Ju water and south source Nanhe import, the water potential is gradually increasing, known as Li Shui; Liushui southeast flow Hanzhong (ie Nanzheng County), began to call Han water, and then to Xiangyang, also known as Xiang River. The mainstream flows through 20 counties in Shaanxi and Hubei provinces and flows into the Yangtze River in Hankou.