General situation of Jindi River

Jindi River is a river with an inclined plain. River length 159 km, riverbed gradient of 0.9 1 ~ 0.59. Originated in hua county, northern Henan, it flows through Puyang and Fanxian, and joins the Yellow River in Zhangzhuang, Taiqian County. The basin covers an area of 4869 square kilometers, with a long and narrow shape and a rhombic appearance, belonging to the alluvial plain of the Yellow River. 195 1 year, the middle and lower reaches of Jindi River were designated as flood storage and detention areas to prevent catastrophic floods in the Yellow River. The natural characteristics of the basin are wide at the top and narrow at the bottom, with many slopes and depressions and many tributaries. Because the outlet of Jindi River is affected by the siltation and elevation of the Yellow River channel year by year, the outlet of surface runoff and underground runoff is not smooth, resulting in shallow groundwater in the middle and lower reaches, bitter and salty water quality, alternating flood, waterlogging, drought and alkali, and long-term low and unstable agricultural production.

Observation data of Fanxian Station 17. 1963 Maximum natural annual runoff of Jindi River 102 billion cubic meters. 1966 bucket minimum natural annual runoff is 004 1 100 million cubic meters. The annual average natural runoff is 24.8 billion cubic meters, the annual average runoff depth is 58 mm, and the annual average runoff is 7.86 cubic meters per second. It is estimated that the flood volume in Jindi River Basin will be10.92 billion cubic meters in five years and 345 million cubic meters in 20 years.

Due to the high siltation of the Yellow River levee in Jindihe River basin year by year, the flood discharge and drainage of the main stream are not smooth, which further affects the difficulty of drainage below Puyang. Before 1963, there were not many cases of precipitation waterlogging in Fan County, and waterlogging disasters only occurred in some low-lying plots or areas where drainage ditches were blocked. The waterlogging disaster is mainly due to the flood in the main stream of Jindi River, which makes the tributaries waterlogged. After 1963, five major floods occurred, with an average of 1 time for three years, all of which were caused by the backward flow of Jindi River. Waterlogging followed, and waterlogging and underwater infiltration raised the groundwater level, which aggravated the development of salinization in the triangle.

Jindi River originates from Jing Zhang Village, Xinxiang County, passes through Jixian County, Xunxian County, hua county County, Puyang County and Fanxian County, and joins the Yellow River in Zhangzhuang, northeast of Taiqian County. The river length is 159 km, and the riverbed gradient is about110000. The average dike width on both sides of the strait is 260 meters, and the drainage area is 5047 square kilometers. There are two tributaries with a drainage area of 1000 square kilometers: one is the main canal, which starts from Luoxiaozhuang in Changyuan County and ends at Xuezhuang in hua county. The river course is 50 kilometers long, with a drainage area of 1 105 square kilometers, which mainly intercepts the west slope water; The other is Huangzhuang River, which originates from Liutan Village, hua county, and joins Jindi River in Wu Ye Temple. The river is 32km long, with a drainage area of 130 1 km2. There are also 17 tributaries with a drainage area of 100 ~ 1000 square kilometers, which mainly collect slope water. Because of the low terrain, a gate was built before entering the Yellow River to prevent the Yellow River from flooding and discharge water.

Jindi River is a plain slope river with a length of 159km and an average width of 260 m, with a gradient of 0.965,438+0 ~ 0.59. The long and narrow river basin covers an area of 4,869 square kilometers, including Xinxiang, Yanjin, Jixian, Xunxian, Fengqiu, Puyang, Changyuan, hua county, Fanxian, Taiqian and Ludong. Jindi River basin covers an area of 60% above Wu Ye Temple in Fan County and 40% below Wu Ye Temple.

Jindi River, a tributary of the lower Yellow River. The Di Chin River, the boundary river between Shandong and Henan, originated in Xinxiang County, Henan Province (referring to Gengerzhuang, Hua County) and flows northeast, passing through Henan and Shandong provinces, and crossing the Yellow River near Zhangzhuang, Taiqian County. The main stream below Huaxian County is 158.6 km long, which is a plain inclined river. The main tributaries are Huangzhuang River (including Liuqinghe River), Huimugou and Menglou River. The basin is a long and narrow triangle with an area of 4,869 square kilometers, a total population of about 2.88 million and more than 5.3 million mu of cultivated land.

Jindi River Basin is an area where the Yellow River overflows and migrates in history. 1855, the Yellow River diverted northward at the breach of Tongwa Chamber, and dikes were gradually built on both sides of the Yellow River. The water system between Taihang Dike, Huangdi Dike in the north and Beijin Dike has evolved into a modern Jindi River.

Di Chin River, in the Jin, Yuan and Ming Dynasties, with the migration of the Yellow River, gradually formed a plain inclined channel. 1855 (the fifth year of Xianfeng, Qing dynasty), after the Yellow River burst in Tongwa Room, people along the river borrowed soil and added gold fields year by year, forming a sub-river trough, which was named after its gold fields in the north. This river originates in hua county, Henan Province, enters from Gaodikou, Shenxian County, passes through Taochengpu, yanggu county, reaches Zhangzhuangmen, Henan Province, and joins the Yellow River. The river along the border is 83.4 kilometers long, with an average river width of 260 meters and a drainage area of 93 square kilometers.

Jindi River. It is a tributary of the Yellow River, which originates from Zhangjing Drainage Ditch in Xinxiang County, enters Puyang from Wuyemiao Village in Hua County, passes through Puyang County and Fanxian County, and joins the Yellow River in the north of Zhangzhuang Village at the northeast end of Taiqian County. The river length in Puyang City is 1.3 1.6km, and the drainage area is 1.750 km2. It accounts for about 4 1% of the total area of the city. The river channel ratio is reduced to111000-116480. The annual average flow is 5.26 cubic meters per second, and the annual average runoff is 654.38+66 million cubic meters. The main tributaries in the territory are Huimugou, Sanlidian, Wuxing, Liu Fang Zhuang, Qingjian, Huxiang, Pucheng, Menglou, Penglou and Liangmiao. Because of the low terrain, a gate was built before entering the Yellow River to prevent the Yellow River from flooding and discharge water. There is also a lifting station next to the gate, with a designed lifting flow of 64 cubic meters per second. When Jindi River is supported by the Yellow River water and cannot flow into the Yellow River by itself, start the pumping station to pump Jindi River into the Yellow River. The main stream of Jindi River is seriously silted, and flood disaster is imminent.