Jia Rang

…Most of them were mainly for transportation and river diversion, and were for irrigation with surplus water. With the establishment of a unified state, flood control was also planned in general, but the first person to draw up a comprehensive flood control plan for the Yellow River system was Jia Rang, who lived during the reign of Emperor Ai of the Western Han Dynasty. He said that the best policy would be to relocate the people of Jizhou (Hebei Province) who were in charge of the waterway and to dam the barrier in Liyang (Henan Province) to allow the Yellow River to flow north, that the middle policy would be to open many canals in Jizhou and divert water, transport water, and provide irrigation, and that the worst policy would be to reinforce the current levees and compete for water and power. …

*Some of the terminology explanations that mention "Jia Rang" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…その多くは交通漕運と河水分流を主目的とし，〈余水を以て灌漑する〉ものであった。統一国家の成立とともに，治水も全般的に計画されてくるが，初めて黄河水系の総合治水プランをたてたのは前漢哀帝時代の賈譲（かじよう）である。彼は，冀州(河北省)の民で水路にあたる者は移住させ黎陽(河南省)の遮害亭を決潰させて黄河を北流させるのが上策，冀州で多数の渠を開き，分水，漕運，灌漑を図るのが中策，現在の堤防を補強して水と力を争うのは下策といっている。…

※「賈譲」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報