--- title: Ancient irrigation systems earn recognition description: Breaking news and analysis from time.com. Politics, world news, photos, video, tech reviews, health, science, and entertainment news. canonical: https://time.com/branded-content/china-daily/ancient-irrigation-systems-earn-recognition/ article:opinion: false article:content_tier: free article:published_time: 2026-06-18T14:28:07.076Z article:modified_time: 2026-06-09T07:28:05.763Z article:section: Paid Content og:title: Ancient irrigation systems earn recognition og:description: Breaking news and analysis from time.com. 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They are at time.com/newsletters and are separate from a paid subscription.  _This content was paid for and prepared by China Daily, an official publication of the People's Republic of China. The TIME editorial and advertising departments were not involved in the creation of this content._ The Honghe Hani Rice Terraces in Honghe Hani and Yi autonomous prefecture, Yunnan province, date back to the Tang Dynasty (618-907). PROVIDED TO CHINA DAILY By HOU LIQIANG Four ancient Chinese irrigation projects have been designated World Heritage Irrigation Structures, raising the number of such Chinese facilities on the WHIS list to 42, the Ministry of Water Resources said. The Honghe Hani Rice Terraces, the Chishan Lake irrigation project, the Jianjiangyan irrigation system and the Yongding River ancient canal irrigation project were included in the list on September 6 during the 76th International Executive Council Meeting of the International Commission on Irrigation and Drainage in Kuala Lumpur, Malaysia. The council is the commission’s highest decision-making body. Also a UNESCO World Heritage site, the Honghe Hani Rice Terraces in Honghe Hani and Yi autonomous prefecture, Yunnan province, date back more than 1,300 years to the Tang Dynasty (618-907). Spread over 9,240 acres, the site features a complex ecosystem of forests, villages, terraces and waterways that is intricately intertwined with the daily lives of the people, the process of growing crops and the ecology. For centuries, villagers have built channels to direct water from mountaintop forests, where it is conserved, to their fields. This water flows through the villages, eventually merging into rivers, where the water naturally evaporates and returns as rainfall, creating a sustainable and complete natural cycle. The Chishan Lake irrigation project in Jurong, Jiangsu province, was built more than 1,700 years ago. It remains a crucial irrigation and flood-control project in the upper Qinhuai River, serving more than 12,670 acres. The project is known for harnessing the natural terrain to its advantage. In plain polder or low-lying areas, embankments have been built to create retention lakes. Equipped with bidirectional sluice gates, the lakes mitigate flooding and drought in the low-lying areas. In hilly areas, dams have created stepped canals for navigation while providing irrigation water. Construction of the Jianjiangyan irrigation system began around 141 B.C. in Pengzhou, Sichuan province. It continues to irrigate 26,700 acres of farmland. Builders used bamboo cages filled with pebbles to create weirs that coordinated irrigation, floodwater discharge and sediment removal. The system also features weirs that divert spring water from artesian wells, ensuring irrigation even during droughts when river water is scarce. The Yongding River ancient canal irrigation project in Mentougou district, Beijing, is believed to have been built during the Liao Dynasty (916-1125). It still irrigates about 329 acres and provides supplementary water for orchards and ecological areas. The canal uses a bend in the Yongding River to draw water. Its sloped design ensures natural sedimentation, turning silt-laden river water into clean irrigation water. Nineteen other projects from eight countries were also added to the list, taking the total number of global heritage irrigation sites to 200. The commission instituted the designation in 2014 to protect and promote irrigation works of historical significance and scientific value. ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/branded-content/china-daily/ancient-irrigation-systems-earn-recognition/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/branded-content/china-daily/ancient-irrigation-systems-earn-recognition/"},"headline":"Ancient irrigation systems earn recognition","datePublished":"2026-06-18T14:28:07.076Z","dateModified":"2026-06-09T07:28:05.763Z","description":"","url":"https://time.com/branded-content/china-daily/ancient-irrigation-systems-earn-recognition/","keywords":[],"thumbnailUrl":"","author":[],"articleSection":"Paid Content","image":[],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https://time.com/branded-content/china-daily/ancient-irrigation-systems-earn-recognition/","name":"Ancient irrigation systems earn recognition"}}]}] ```