Characteristics of Jiaoxi River Water Text

Xixi basin, the source of the upper reaches of Jiaoxi River, gradually expanded from top to bottom to both sides, forming two rainstorm centers, with an average rainstorm of 220 ~ 180mm in 24 hours. The distribution of annual rainfall in the basin is uneven, decreasing from mountainous areas to coastal areas, with an average annual rainfall of 2000 ~ 1400 mm, and the annual variation of rainfall is also great. The rainfall in dry years is only about 60% of the annual average rainfall, while in wet years it can reach 1.5 times of the annual average rainfall. The annual rainfall in Fuan Basin is 1.567mm, mostly in May-June.

The distribution of annual runoff in the basin is similar to that of the current year, with the highest in Zherong and Zhouning mountainous areas. River runoff is abundant, with an average annual runoff of about 4 billion cubic meters for many years. There is a great difference in annual runoff between wet year and dry year. More serious droughts occur in summer. Mountain torrents are mainly caused by typhoons and heavy rains, and floods have skyrocketed and plummeted, and coastal areas have been affected by floods. According to historical records, during the Song Dynasty and the Republic of China, two catastrophic floods and a tidal disaster occurred in Fuan County. The biggest one, the three-day rainfall in Chengguan was169.3mm, and the maximum peak flow reached12700m3 per second. The county seat was flooded, with 334 houses collapsed, casualties 120 people, and about 4700 hectares of flooded farmland. The main tributaries of Jiaoxi River are: Qianyang River, Muyang River, Guanyang River, Shuangxi River, Shouning River, Zherong River and Qibu River.

Qianyangxi, whose upstream is called Dongxi and Mingrenqiao Creek, originates from Qinglangang, Fuxi Township, Zherong County (Dongyuan Township is called Yuanyangtou Village), meanders southward, reaches the intersection of Xiping Village and Xixi Village in Zhaizhong Township, leaves the country at Jiaxikou, the junction of Jiuwan Village and Xiapu, and then flows southward to Saijiang River downstream of Jiaoxi via Fuan Creek Handle. The county seat is 29.7 kilometers long and the drainage area is 68.68 square kilometers. The river is 52 kilometers long and the territory is 20 kilometers long; The total basin area is 402 square kilometers, and the domestic area is 142 square kilometers.

Muyangxi, which originated in front of Zhenghe County, Zhejiang Province, flows through Heyang, Shekou, Muyang, Kangcuo and Xitan in zhouning county and joins Fuchun River in front of Lianshou Village in Saiqi Town. Full-length 1 16 km, 46.4 km in China; The total drainage area is 1389 km2, and the domestic drainage area is 5 18 km2. Houxi, in Shouning County and Taishun County, is called Shoutai River, which originates from the Maple Ocean at the southern foot of Shanyangjian and flows from northwest to southeast. The section from the source that flows through Longxi and Yang Di to Changling is called Diyangxi. After flowing into the tributary Xiaodongxi, the flow doubles, turning southeast from Yangmeizhou to Wuxi, Si Qian, which is called Tiegengxi, and after flowing out of Wuxi, it is called Houxi. Along the border of Shouning and Taishun counties in Zhejiang Province, it flows south, through Qikeng and Dawangqian to the intersection of Dujiayang and Xixi, flows into Fuan County through the boundary of Jiakeng, and flows into Dongxi, where it meets Jiaoxi, with a total length of 48 kilometers, a drainage area of 335.2 square kilometers and an annual runoff of 297 million cubic meters.

The birthplace of the goat's tip is located in the northernmost part of the county, with an altitude of 1649 meters, which is the highest peak in Shouning County and the highest among the peaks in eastern Fujian. It is named because of the sparsely populated land and frequent goat activities. Located in the traffic artery of Fujian and Zhejiang, it is an ancient military place. In the 24th year of Jiajing in Ming Dynasty (1545), Zhang Henian, the magistrate of a county, built Caoqingguan here to guard against the enemy. During the Second Revolutionary Civil War, the Seventh Army of the Chinese Workers and Peasants Red Army went north to resist Japan and passed here to Qingyuan.

Xixi, a tributary of Houxi in the upper reaches of Dongxi. Originated in the northeast corner of Houxixi at the southern foot of Toufengjian in China, it flows from northwest to southeast, passes through Houxixi, Fuji, Xitan, Tanshan and Tanyang to Xipu, and flows into Panyangxi, a tributary (Panyangxi originated in Mount Fuji, passed through Da 'an and Cuntou in Pan Yang to Xipu Tombs, and then flowed into Houxi through Dujiayang). The total length is 33.5 kilometers, the drainage area is 182 square kilometers, and the total annual runoff is 244 million cubic meters.

Chanxi is an important water system in the county, which originated from Dashushan Mountain under Bush forest on the western border. From northwest to southeast, it flows through Dashu, Liuliuxi, Aoyang, Zhang 'an, Jiaolin, Guiling, Pangyang, Shigu, Houyang, Lu Guan and Zhuguanlong, and flows into the tributary Nanyang Creek (Nanyang Creek originated at the southern foot of Nanfeng, and its upstream is divided into two tributaries, one originated from Chilingyang, the other originated from Tiechang, and then flows to brolin via Lu Guan to inject into Zen West). The upper reaches of the riverbed are narrow, steep, swift and condescending, forming many waterfalls and narrow valleys, especially the Sanquling Waterfall. The slope of the middle and lower reaches is relatively gentle and the water flow is slightly slow, but there are many gravel piles at the bottom of the stream and the rocks are prominent, which makes it impossible to navigate. Chanxi River has a total length of 45.5 kilometers, a drainage area of 226.7 square kilometers, and an annual runoff of 298 million cubic meters, ranking first in the Shouning River in terms of hydraulic resources. A section of Hama Creek that passes through the county seat. Before the establishment of the county, the Ximen Bridge, which has been flowing to this day, forms a 90-degree right angle with the foot of the Half Moon Mountain and falls to the south of the city. Every time a flash flood breaks out, the flood often changes direction and goes straight to the east of the city. The annual eclipse gradually turned into a depression, forming an eastward river. After the establishment of the county, due to the need of fortification and the hydrological situation, the river at the foot of Nanliu Banyue Mountain was blocked and a new river was excavated. The diversion flows downstream through the city, such as the jade belt in front of the old county government, eastward to the door, and turns southeast along the edge of the city. It is not only convenient for residents to take water to change the style of Australia and the ocean, but also can be used as a moat for solid defense. After the diversion, the residential area by the stream was named Xinxizai, and the place name is still in use today. The original river at the foot of the Half Moon Mountain has now become a residential area, and the old traces of the underground ancient river still exist, with sand and gravel as thick as 3 ~ 4 meters.

Pingxi is the largest tributary of the inclined beach. Originated at the foot of Zicui Rock in Xibiaoling, Zhenghe County, and flowed into Nanxi in the west of the county. It flows eastward through Xidi, Dongmuyang, Pingxi, Huanxi, Lingdou, Changxi, Yintan, Xialao and Zhu Muyan, with a total length of 50 kilometers and a drainage area of 320 square kilometers.

Fengyangxi, originated in the eastern foot of Laoya Mountain on the northeast border of Shouning County. It enters from Liucuo, Fengyang Township, flows through Liucuo, Kidd, Tingjiayang and Dongling from west to east, and flows into Fuan at the exit of Xiaoxi. The total length of the territory is18.3km, the drainage area is 59.3km2, and the annual runoff is 64 million cubic meters. The streams and rivers in the north, northeast, west and south are the first and second tributaries of the Jiaoxi River system.

Longxi (called Zherongxi in Anhui) originates from the west foot of Taimushan Mountain range, that is, the top of Hou Xian Village in Dongyuan Township between Dongshishan and Niulangang in Shidinggang, flows southwest through Chengguan Basin, turns north, and joins the Dongxia reach of Jiaoxi Dongyuan between Cheng Jiao Township and Longshan Village and Dongping Village in Yingshan Township, with a length of 29.6 kilometers and a drainage area of 106.3 square kilometers.

Wupuxi, which originates from the top of the lake in Ling Ke Village, Zhayang Township, flows northward through the suburban township and joins the Dongxi reach of Jiaoxi Dongyuan under Jianling, with a length of12.4km and a drainage area of 310.4km2..

Junping Creek originates from Shidie Peak, Hutou Village, Junping Township, flows through Junping Township to the northwest, and joins the Jiaoxi reach of Dongyuan Dongxia near Houlong Village and Fuan in Yingshan Township. The length of the county seat is 1 1.6 kilometers, and the drainage area is 4 1.5 square kilometers.

Xixi, originating in Mabiyang, Fuxi Township, flows southeast to Xiping Village, Zhazhong Township, and joins Dongxi, with a length of 18.4 km and a drainage area of 77.75 square kilometers.

Taokengxi, which originates from Dawan Mountain in Dongyuan Township, flows southwest to Jiaxikou in Zhaizhong Township, joins the boundary river with Xiapu County, and joins Qianyangxi at Jiaxikou. The county seat is 20 kilometers long and the drainage area is 50.4 square kilometers. Chixi, which originated in the back hill of Chengyuan Township, flows through Chixi Village, enters qingyuan county, Zhejiang Province, and turns into Xixi in Shouning County. The basin covers an area of 46.3 square kilometers with a total length of 15.9 kilometers, with an average gradient of 2.09%, an average annual flow of 2.06 cubic meters per second and an average annual runoff of 64.9 million cubic meters.

Nuanxi, which originated in Beidou, Chengyuan Township, flows through Huangling, Xinkang, Niutu and other villages, enters Shouning County and flows into Xixi. The basin covers an area of 65.5 square kilometers, with a total length of 19.9 kilometers, an average gradient of 13%, an average annual flow of 2.74 cubic meters per second and an average annual runoff of 86.4 million cubic meters. Long Ting Creek is the largest river in the county and the main stream of Muyang Creek, which is connected with Zhenghe Yangxiu Creek. Huanghuakeng, which originated in Banyuan, Zhenghe County, entered the country near Dongxing Farm, passing through Yushulin, Xikou, Nakeng, Long Ting, Deng Jin, Daqianping and Huangxian County (Mindong Power Station Dam) to Wentan and then to Muyangxi. Among them, Zhouning and Zhenghe River are above the western part of Qinshan Wayaozi Mountain in Siqiao Township, and Zhouning and Fuan River are above Shimentou Village to the eastern part of Qibu Township in Daqianping Town. The territory is 56 kilometers long, the drainage area is 483.7 square kilometers, the drop is 6 16 meters, and the average gradient is 1 1‰. The theoretical reserve of hydropower reaches 137900 kw. There are tributaries such as Siqiao Creek, Qianxi Creek, Hexi Creek, Chunchi Creek and Qibu Creek that are injected into Longting Creek.

Qibuxi is the main tributary of Longtingxi. Originated in the foothills of Shengyinlou, it flows through Lidun, Qibu and Jiulong River and flows into Longting River, and its upstream is called Lidun River. The total length is 34 kilometers, and the drainage area is 155.6 square kilometers. Drop1025m, with an average slope of 30‰. The theoretical reserve of hydropower is 29,900 kilowatts. The tributaries that flow into Qibu Stream are Dongyang Stream and Jiping Stream.

Toyo Creek, a tributary of Qibu Creek, was named Toyo Creek because its place name was originally called "Toyo". Originated in Yuantou Village, Puyuan Township, it flows through Xiping, Duanyuan, Shicheng Town and Xiao Jian, Zhu Na, and flows into Qibuxi. Total length 18km, drainage area 5 1. 1 km2, average gradient 16.3‰. The theoretical reserve of hydropower generation is 4500 kilowatts.

Bapuxi is a tributary of Muyangxi. Xianggangtou, which originated in Yang Xiaoguo, left the country through Houyang and Bapu, crossed Xiangdi in Fu 'an County and merged into Muyangxi at the end of Niu Ling. The domestic length is 15. 1km, and the drainage area is 49.3km2, with an average gradient of 32.4‰. The theoretical reserve of hydropower is 6500 kilowatts. Baluxi and Qingyuan county annals believe that it belongs to Xixi tributary water system at the source of Jiaoxi. Originated in Yangjiazhuang, Lingtou Township (Shouning County annals: the east foot of Shuangxi in the northwest of Hedi Town (formerly Su Hu Township)), it passes between Tangyuanjian and Jigongshan, and passes through Xiazhuang, Lingtou, Baoxie, Balu, Xiaohengling and Fish Bar? Shuang Gang Bridge flows into Tuoxi in Shouning County, which is called Tuoxi. Tuoxi passes through Pingkeng, Jiuling, Gu Feng and Xinkengwei, and is called Jiulingxi. There are 55 tributaries along the way. Baluxi River has a total length of 25 kilometers, a drainage area of 92 square kilometers, an annual average flow of 4.67 cubic meters per second, a natural drop of 572 meters, theoretical reserves of hydraulic resources10.222 million kilowatts, and an exploitable installed capacity of 0.74 million kilowatts.