aojiang river

The source of Aojiang River is Guiku Village, Guishan Township, wencheng county, which is the southern foot of Wudi Mountain in South Yandang Mountain. It is 835 meters above sea level, located at 27 35 ′ 39 ″ north latitude and 65 438+020 3 ′ 24 ″ east longitude.

Aojiangkou was originally located at the estuary between Mei Xin in Longjiang, Cangnan County and Ren Xianyan in Changgang, Mocheng County, Pingyang County. In the 28th year of the Republic of China (1939), in order to prevent the Japanese aggressor ships from entering the harbor, Xu Yong, the county magistrate, ordered to throw plum blossom piles made of big pine trees and huge stones at the lion's mouth, sealing off the harbor against the enemy, resulting in gradual siltation inside and outside the estuary. 1959 to 196 1, organized by Aojiang Waterway Management Office, presided over by economist He, used blasting to clear piles and remove obstacles. But the estuary moved forward by 10 km. Now the estuary is located on the connecting line between Yangyushan Mountain in Xiwan, Pingyang County and Pipa Mountain in Bawa Town, Cangnan County, at 27 34 ′ 7 ″ north latitude and120 37 ′ 47 ″ east longitude.

Aojiang River Basin is located in the southeast of Zhejiang Province, including parts of Wencheng, Pingyang, Cangnan, Taishun and Ruian counties and cities in Wenzhou. Adjacent to Fujian Province, it is also interlaced with Feiyun River Basin. Aojiang river basin area 1542.2 square kilometers, including paddy field area of 502,000 mu. The main stream of Aojiang River is 9 1. 1 km long. 26 kilometers away from the estuary is the county boundary of Heping County, Cangnan County. The main stream of the Aojiang River flows from west to east, with undulating mountains and high terrain in the west, and only a small scattered paddy field in the canyon area. Most of the eastern part is a coastal plain with large paddy fields. The total drop of the mainstream of Aojiang River is 835 meters. There are 1 1 tributaries, and the length of the river is more than 10 km (excluding inland rivers entering the river). Shizhuxi originates from Fengmentou, wencheng county, with a total length of 10 km, and flows through Jiaoxi Bridge from north to south to the main stream. Aoxiaxi originates from the tip of Jiu Feng, Cangnan County, with a length of 13km, and flows from north to south to Xikou to join the main stream. Yuexi originates from Niulan Bay, the first peak of Shishou Mountain in Chaotian, Pingyang County, with a length of 16.7 km, and flows southeast to the lower main stream of Liyuan Reservoir. Qingjiexi originates from the northern foot of Yangjiashan Mountain in Cangnan County, with a total length of 10.3km, and flows northward into the main stream of Fan Yan. Huaixi originates from the southern foot of Huangluo Mountain in Pingyang County, and is 19.5 km long. It flows southward to Hengxi and then flows into the main stream. Naocun Creek originates from the northern foot of Yucang Mountain in Cangnan County, with a length of 14.4 km, and flows northward to Longfeng Bridge in Xixiang Town and then merges into the main stream. Fengwoxi originates from the southern foot of Longjing Mountain in Pingyang County, with a length of 18.4 km, and flows southward to Shuitou Town to be injected into the main stream. The downstream banded flow originates from the southern foot of Longjing Mountain in Pingyang County, with a length of 24.8 kilometers, and flows into the main stream through the Xianqiao sluice in the south. The main stream of Luoxi River was renamed Hushan Inland River, which originated at the northeast foot of Yucang Mountain in Cangnan County and was 2 1.7km long. It flowed northward into the main stream through Xia Qiao Gate. Meixi originated in the southwest foot of Shamaoyan in Shengjing Mountain, Rui 'an County, with a length of 22 kilometers, and flowed eastward into the main stream through Meipu Gate. The river of Hengyang originates from Liang Jian, a mountain peak south of Jiu Feng, Taishun County, with a total length of 60.5 kilometers, and flows from southwest to north to Zhujiazhan sluice to inject into the main stream.

In addition, there is Xiaojiangtang River, with a length of 10 km, formerly known as Lingxitang River, which divides water from the Lingxi control sluice in Zhijiang, Hengyang to the north, with a length of 10.9 km, and flows into the main stream of Xiaojiang sluice. Jinlong Canal is the main channel of Jiangnan river network, from Jinxiang to long gang zhen, traveling 26.4 kilometers northwards, and being injected into the main stream by Longjiang Gate. The average annual total water resources in the Aojiang River Basin is 654.38+0.9./kloc-0.9 billion cubic meters. Among them, the surface water is 65.438+75.3 million cubic meters; Groundwater is 65.438+0.66 billion cubic meters, but the current available water supply is only 65.438+0.78 billion cubic meters (surface water is 65.438+0.66 billion cubic meters and groundwater is 65.438+0.20 billion cubic meters), accounting for only 9% of the total water resources. However, the water demand is 326 million cubic meters, which is still short of 65.438+0.48 billion cubic meters. It is necessary to strengthen the construction of water conservancy facilities and further develop and utilize water resources. The total annual average runoff of the whole basin is 65.438+75.3 million cubic meters. The bumper year is 2.2965438 billion cubic meters; The average annual water consumption is 65.438+67.3 million cubic meters; The annual water shortage is 654.38+25.7 million cubic meters; The dry year is 800 million cubic meters. The average annual water inflow into the sea for many years is 65.438+58.7 million cubic meters.

The theoretical reserve of hydraulic resources in Aojiang River Basin is 6.5438+0.38 million kilowatts. Can develop hydraulic resources of 39,600 kilowatts; At present, 8000 kilowatts have been developed, accounting for 20% of the exploitable. There are abundant hydropower resources that need to be developed and utilized, especially in the current situation of energy shortage, it is more urgent to develop hydropower generation.

At the mouth of the Aojiang River and the coast, due to the sediment carried by the upstream current, the sediment is deposited year by year, and at the same time, it is sent to other places under the influence of the sediment movement on the continental shelf, which expands the deposition surface, thus forming a vast beach resource at the mouth and the coast. The formation of Aojiang beach is due to the continuous expansion of siltation surface in estuary and coast. From the Northern Song Dynasty (1064) to the founding of People's Republic of China (PRC) (1979), the coastline moved to the East China Sea for 2 to 7 kilometers, with an average annual moving speed of 2.2 to 7.7 meters. After the founding of the People's Republic of China, it extended to the East China Sea at an average annual rate of 10 to 20 meters. Land has been reclaimed from the sea in Jiangnan area of Cangnan County on the south bank 1.7 million mu. Xiaonan area of Pingyang County on the north shore has reclaimed 2000 mu, but the beach area to be reclaimed is still very broad. It is connected to Feiyun River Beach in the north and bedrock coast of Pipa Mountain in the south, with a total area of 255,000 mu. Among them, the exposed area is 6.5438+0.2 million mu, and there are 50,000 mu of beaches south of the Yangtze River that can be reclaimed in the near future. Above the theoretical datum, there is a tidal flat area of 6.5438+0.35 million mu. In a word, the beach area to be reclaimed is equivalent to the cultivated land area in Jiangnan and Xiaonan Plain, and it should be reclaimed and developed. Hengyang tributary is the main channel of Cangnan, with an original length of 67.5 kilometers. After many bends and straightens, it is now 60.5 kilometers long. Originated in Jiufeng Mountain in Taishun County, it entered the country from Taishun, passed through Longtan, Huangtuling and Tianliao to Juxi, and injected water from Shanbei, Gankeng Furnace, Huangtuling, Furnace Foundation Pit, Ban Ling Furnace and Yangbanling successively. It flows out of Juxi, flows southeast, passes through fields, Zhangkeng and other places, and flows into Fuge River at Qibutou (Fuge River has two tributaries: one originates at the eastern foot of the Mid-Levels, and the other originates at the northern foot of Dajiajian Mountain and meets at Xiakeng Furnace). Out of Bart, turn to the northeast, pass through Xiage, Changtan, Qimuchang and other places, and receive water from Fangzhu and Songbai Palace. To Wanyao, where it flows into the Kuteng River (Kuteng River originates from the west foot of Dayucang Mountain and flows through Singh, Yuan Jing, Lu Heng, Dashibang and other places. Out of the bowl kiln, Naluochan came to the water's edge, passed through Kengkou, Hou Yaozong and other places, and entered Qiaopier Reservoir. From the source, it is the upper reaches of Hengyang River, 3 1.5 km long, collectively known as Juxi (among which Taishun County is a 5.5 km long stream, also known as Houshui).

There are many Guxi canyons, with a valley width of about 200 meters and a riverbed width of about 100 meters. The riverbed slope is about five thousandths below Qibutou, and it flows into the tributary of Juxi, with steep slope, forming waterfalls and rapids. Among them, the larger ones are Huangtuling Shuikuang and Wanyao Waterfall. Because of the steep bank slope, bare rocks, few trees and difficult rainwater regulation, before the completion of Qiaopier Reservoir, floods often fluctuated violently, which was harmful to the downstream. The riverbed is covered with pebbles and even exposed bedrock in some areas. Under the scouring of current, the riverbed suffers from undercutting and lateral erosion. There are two dry rivers: one is the Dragon (Port) Golden (Township) Canal, which runs from north to south through Longjiang, Jiangshan, Equality, Yishan, Xianju, Qianku, Xiangqiao and Kuoshan to the north gate of Jinxiang Town, with a total length of 26.4 kilometers and runs through the Jiangnan Plain; 2. Yun (Yan) Wei (Wei) River, from west to east, passes through Tielong, Yishan, Xianju, Lupu and other towns to Dongkui and Wei towns, with a total length of about 20 kilometers, crossing the Jiangnan Plain.

There are five main tributaries in the Jiangnan river network: First, Wang Long starts at the foot of Fangyan in long gang zhen, runs from north to southeast, passes through Longjiang, Baisha, Haicheng and Lupu, and reaches Dongkui in Wawa Town, with a total length of about15km; The second is the Jinhe River, which runs from the north gate of Jinxiang Town to the northeast, passing through the suburbs and the old city to Dongkui in the town, with a total length of about 7.5 kilometers. The third is the Longfeng River, which flows from north to southwest under the rock in long gang zhen, and reaches Fengjiang Huangpu through Longjiang and Jiangshan, with a total length of about 7.5 kilometers. The fourth is the Qianhu River, which flows from south to northwest to the east street of Qianku Town, passing through Xin 'an, Yishan, Jiangshan and other towns to Qianhu River, with a total length of about 13 km; The fifth is Qianwanghe River, which runs from former Ku Town to Xitoubu, Wangli Town via Xiangqiao and Xin 'an, with a total length of about 5 kilometers. The positive source is Sunhu Lake. One of its sources comes from the northern foot of Zhou Wang Mountain, and the water flows northward. Xianju Mountain, Ban Ling Temple, Dharma Temple and other waters flow into the Wangqian River in Nanchaliao Village. First, it flows from the south foot of Gangjian (formerly known as Sun Hushan), through Baibuling, Paifang and other places, and then flows into Wangqian River at Xitoubu. The secondary water source is general landscape, which comes from the northern foot of Longshan Mountain in Tian Yang and is divided into eastern water and western water. The water in the east flows down from the hill to the foot of Jiangjun Mountain and joins the water in the west. The surrounding water in the west comes from the pit mouth and the mountain, joins the surrounding water in the east at the foot of Jiangjun Mountain, and flows into Jinlong Canal through Hexi and Jiangjun villages. In addition, there are waters in Whale Head, Wuling and Jinxiang. Because of the long river course and short water source, raw water resources in Jiangnan are relatively scarce. In case of dry weather, the source of Sichuan dries up and often suffers from drought. Therefore, predecessors have long advocated taking water from Yangzhihe to make up for the shortage. It was not until the mid-1960s that the sluice gates at Zhujiazhan, Huangpu and Whale Head were built that this wish was realized.

In addition to the rivers in the Aojiang River system, there are several rivers and streams with short flow, such as Mazhan, Chixi and Fanshan, which directly enter the sea. The old chronicles called it Dalanxi, which has two sources: Dongyuan, which originated at the western foot of Heding Mountain, flows northwest, passes through Changlingjiao, Ding Cun and Zhongcun, and flows to the water tail of Fanshan Town. There are mine water injection in Lingjiao Mountain, Shitou Mountain, Yangzi Mountain, Yang Jindou, Kengmenling, Yuan Pan, Dagang and Shenyang successively. Then turn west, pass through the lower half of the mountain and Xikeng, reach Ganqi Village in Puping Township, and meet Xiyuan; There are two tributaries in Xiyuan: one is the Southern Song River, which originates from Shibapo Mountain, flows to the southwest, passes through Yangtou and Yangweiyuan to Beishan, and successively pours into the pit water of Xincuokeng, Yangcaokeng, Majiashan, Zhuozuoshan and Tianhushan. Then it passes through Xiguang and Puping, and is connected with pit water such as Kuzhutou, Inner Peak, Shibitou, Outer Peak and Lion's Head and Foot. It flows to Gongshan and joins with another tributary-Zhumuling Pit Water (Zhumuling Pit Water originates from Dagang Mountain and flows through Huayang Ding Yang, Wanyaowei, Zhumuling in Puping Township, Nadingyang Taihu Reservoir, Qiankengtou, Pit, Tianguang, Wanyaowei Reservoir, Kengwei, Qingshan, Hutiaoting, Chaliao and Midoulan, etc. After the confluence of the two tributaries, the water in the pits of Lingbian, Liaozi, Kelingjiao, Gongtou and Fengtou flows to Ganqi Village and merges into Dongyuan. After the east and west sources merge, they flow southwest, pass through Gongjiao and Fengshuping, and leave Cangnan County. At this point, the length of the stream is 12.25 km. After leaving the country, the stream winds 7.25 kilometers in Fuding County and flows into Shacheng Port.

Rivers in the county (excluding Aojiang River, Chixi River and Fanshan Mountain Stream) have a total rainwater collection area of 1087.8 square kilometers, a total length of 1054.22 1 km, a water surface area of 20.3522 square meters, a total volume of 50.029 million cubic meters and a storage capacity of 44/kloc-0.

Rivers in the county belong to outflow rivers and are influenced by subtropical maritime monsoon climate. Every April 15 enters the flood season, and 10/5 enters the flood season. According to the records of hydrological department for many years, the average annual flow of rivers in the county is 65.438+0.20287 billion cubic meters, in wet years, 65.438+0.5395438+0.000 billion cubic meters, in wet years, 65.438+0.5475 billion cubic meters, in water shortage years, 90.20./kloc-0.60 billion cubic meters, and in dry years, 66.5445.