Tian Yang Weir is located in Dingjia Village, Baoshan Town, 7.5 kilometers north of Chenggu County. In September 2008, it was announced by the Shaanxi Provincial People's Government as a cultural relics protection unit in Shaanxi Province.
According to legend, in the Western Han Dynasty, Xiao He, Cao Can and Sean were the first to talk about developing agriculture and provide food and grass for the Han army. During the Three Kingdoms period, Zhuge Liang's Northern Expedition, Xiao He and Cao Can opened, and Hanzhong was the base camp, teaching soldiers to practice martial arts and persuading farmers to "build more dams on their heels" to expand production and ensure the supply of soldiers. In the Southern Song Dynasty, Yang Yigao, a famous anti-gold star in the northwest, retired from Shuibei Village in Chenggu County and called on the local people to repair the canal vigorously. The people affectionately called this weir Yang Guanyan, and it was the same before the Southern Song Dynasty.
According to Hanzhong Fu Zhi, "Yang fills the weir, which is located in the north of Chenggu County, cutting off the middle reaches of the water river, and the stone is the weir. According to legend, it was also created by Hou Xiaohe and Pingyang Hou Cao Can. To the song dynasty, to Yang Taishou Yang made great efforts to repair, and the people relied on it "; The Qing Dynasty's "Chenggu County Records" contained: "Yang fills the weir, fifteen miles north, and flows out of the _ water river. Song Houyang filled this weir in Hanoi, hence the name "river bank".
Yang fills the weir at Dingjia Village, Liucun Village and Baoshan in the east longitude, reaches Yangxian County, then turns south, flows to xie cun and flows into the Han River. There are few irrigation cities and many foreign counties in this weir, and water is never used. There is an example of "Three Rivers and Seven Cities". Although the weir is not long, it is only more than forty miles, but the people of Chengyang County in Chenggu have been using it for more than 800 years. It is one of the earliest water conservancy buildings in Hanzhong and has certain value in the history of water conservancy in China. After liberation, after many repairs and expansions, the irrigation area has been increasing. At present, the benefit area of weir irrigation area in Yang Zhan has reached 1. 1 10,000 mu.
The cultural relics of Tian Yang Weir include: Weir Head Weir Dam, which was built in the Southern Song Dynasty. It was originally built of mud and stone, but after maintenance, it was all built of stone. Its weir is120m long, 5m wide and 2m high. The weir crest is 25m long, 6m wide and 5m high. There are also five stone tablets and one stone tablet, which was erected in the fourth year of Tongzhi in the Qing Dynasty (1865). The regular script reads: "The Tongzhi Department of Qin Family added three-level notes to the main hall of Yangxian County five times", which records the regulations and compilation format of ditching and weir repair. The stone tablet is150m high, 77cm wide and17cm thick. Monument II, established in the ninth year of Tongzhi in Qing Dynasty (AD 1870), reads in regular script: "Qin Jia carried salt, won the title of armament road in Shang Tong, Shaanxi Province for ten times, and was in charge of water conservancy station affairs plus five grades." The monument is157cm high, 78cm wide and17cm thick; Monument III, established in the 12th year of Tongzhi in Qing Dynasty (1873), is written in regular script: "Sanfenyan Architectural Monument". The monument is123cm high, 67cm wide and15cm thick; Monument No.4, which was established in the thirty-fourth year of Guangxu reign in Qing Dynasty (1908), reads in regular script: "The case of encroaching on the weir pond and Zhang's case of opening a field to block the weir canal in Xiying Village was put on file and passed the county lawsuit." The monument is163cm high, 78cm wide and18cm thick; Monument No.5 was erected in the fourth year of the Republic of China (A.D. 19 14), with the regular script: "Complementing the Inscription on the Three-Point Yanlong Building". The monument is150cm high, 77cm wide and17cm thick. These five stone tablets are now placed in Yang Wenguan.