What rivers are there in the east of Lu 'an?

The Huaihe River originated in Tongbaishan District of Henan Province, entered Chencun Village, Zhugang Township, Huoqiu from west to east, was intercepted by Wang and passed through Zhengyangguan, and left the country at Haojiawei, Shouxian County. The length of rivers in China is125km, accounting for 12.5% of the total length of Huaihe River. Zhengyangguan in Shouxian County is the confluence hub of the main and tributary of Huaihe River, which collects the water from Funiu, Tongbai, Dabie Mountain and Henan-Anhui hilly plain, and is known as "seventy-two waters belong to Zhengyang".

From the fifth year of Zhao Qian in the Southern Song Dynasty (1 194), the Yellow River burst its way to the south and seized the Huaihe River into the sea. After five years of Xianfeng in Qing Dynasty (1855), the Yellow River diverted northward. In the twenty-seventh year of the Republic of China (1938), the Huayuankou Yellow River burst into the Huaihe River, and the Yellow River was seriously silted.

Width of the Pingshui River of Huaihe River: the widest is 440 meters, which is the Huaidi section of Xi Shou; The narrowest150m, at the bottom section of Jiangjiahu. The average width is 260 meters, and the water depth of the flat trough is 3 ~ 4 meters. The sediment concentration in the main stream of Huaihe River is about 0.55 kg/m3 (Zhengyangguan Station), and the annual sediment discharge is 1.220 tons, accounting for 72% of the whole year in flood season.

According to the hydrological records of 1950 ~ 1984, the water level of Xinhe Estuary is 25 ~ 27 meters in wet years, and 17 ~ 18 meters in dry years, with an annual average flow of 1334 cubic meters. 1July 957 18 The maximum discharge of Zhengyangguan reached 12770 m3/s, but the flood discharge was only 6200 ~ 8000 m3/s, causing floods.

Pi River Pi River ancient water, the east-west source, has a total length of 253 kilometers and a drainage area of 6,000 square kilometers, of which the territory is 5,458 square kilometers, making it the largest river in the region.

The East Pi River has two sources: the west and the east.

Xiyuan-Shuiman River is the main source of Pi River, which originates from the north side of Gualongjian River at the junction of Hubei and Anhui. From Yujiawan, Taipingfan Township, Huoshan County, it flows northward through Shuanghedian, Wangjiadian and Hongjiafan to Jiulong Well, where it gathers the water of Dongjieling and Gaoshan. The upper section is called Sandaohe and the lower section is called Liudaohe. Xixi originated in Shiguzhai, and Zhongjieling passes through the landscape of the ancient Buddhist temple. East flows first to the Wugui River, then turns to the northeast, passing through Tucheng and Leijiafan. Longmen in the south rushes in, then flows north through Baojialing and Mudanjiang, and meets Badouling, Jixinshi and Qingshuihe, which flow from west to east, and meets in Manshuihe Town. Since then, the river bank has been open with a maximum width of 72 meters. Then go to Xiangshui Temple, Duitouwan and Dapingdi in the east longitude, where there is a manger river. After passing the Tangjiayuan, Anjia River flows into it, and then flows eastward through Meilinping, turning to the northeast, and enters the Foziling Reservoir in Wangjiafan (Wuqihe). On the south bank, there is Shiyang River (the upper section is called Huiyang River), which originates from Baimajian, flows through Dahua Ping and enters Foziling Reservoir in Panjiawan.

Dongyuan, Huangwei River, originates from the north of Jingangling in Duodian District of Yuexi County, flows through Qingtianfan and Yi Dao in the northeast, passes Kuotan River and Huang Wei Street in the north, and enters Huoshan County in the east of Doufengzhai, which is called Shiban River. Then it flows northward through Hujia River, joins another Qingtan River from Yuexi County on the west side of Banli River, and flows northward to Mozitan Reservoir. After leaving the warehouse, it flows into the broom river (called Tongjiahe in the upper section) which originates at the tip of Heishan and passes through Dongxixi and Dongfeng Bridge. It was called diving in ancient times and entered the Foziling Reservoir. Foziling Reservoir is a collection of east and west sources, with a control area of 1840 square kilometers (including 570 square kilometers of Mozitan Reservoir). After the Dongpi River was discharged from the reservoir, the valley was wide and the slope was gentle, and the beach appeared. The northwest flows through Liangjiatan bend, the northeast flows through Heishidu and flows into Kongjiahe River. 1975, Huoshan county changed the beach to make farmland here, and then it turned to Lianghekou from Huoshan county and Tuanshanzui in the east longitude, in which Liulin River, Youfang River, Gaomiao River and Xiongjiahe (also known as Wang Mingshan River) were on the right bank, and tributaries such as Shenshui River, Daijiahe and Longmenchong flowed into the left bank. Up to now, the total length of Dongpei River is 103 km, with a drainage area of 2,697 square kilometers.

Xiqiao River, known as Shui Mei in ancient times, is also known as Xihe and Mabuchuan. Originated in the three provinces at the border of Hubei and Anhui, the source is called yellowstone river. Xipi River starts at the confluence of Songjiahe River and Wuji River (Wuqiqiao), flows eastward to Mao Ping, Jiangjiawan and qinglong river (also known as He Jiang), then flows eastward to Qingshan and Qingfeng Ridge, where it flows into Lianhua River, then flows northward to Qinglongzui and Maotan River, and finally flows northward and eastward to xianghongdian reservoir Dam. After leaving the warehouse, it turns southeast to Lianghekou via Wan Jia and Dushan, with a total length of 60 meters.

The East-West Pi River meets at two estuaries in Lu 'an County, which is called Pi River. It flows 9 kilometers east and north to Hengpaitou, and enters the canal head hub project of Pi River irrigation area, forming a 5-kilometer-long artificial lake. After crossing the dam, Sujiabu flows northeast to Shiliqiao River, flows northward through15km, and passes through Lu 'an City led by Gushaopi River to Baoxingji. Turn west to Dawan Road, flow north through Wang Ji, Ancheng Temple and Shanjiabu, turn east for 5 kilometers to Matouji, flow into Shiba River, then flow north through Yinxianji and Yingheji, and enter Huaihe River in Zhengyang. In the basin area, mountainous areas account for 70.4%, hills for 23.2% and plains for 6.4%. The total drop is 362. 1m, and the average river gradient is 1.46‰, in which the average gradient of Dongpi River from the source of Huang Wei to Mozitan Reservoir is11.9 ‰; From the source of Songjiahe River to Wuqiqiao, the average gradient of Xibei River is18.9 ‰; The average slope from Lu 'an Chengguan to Zhengyangguan is only 0. 19‰. Due to the flood in the upstream, a lot of sediment is deposited in the downstream. From 1958 to 1985, the riverbed rose more than 1 m. In the 1980s, the water level of Luan Pi River in flood season was 1000 cubic meters, which was equivalent to the water level of 3000 cubic meters in the 1950s. Rapids often cause disasters. In the upper reaches of the Pi River, three large valley reservoirs, Mozitan, Foziling and Xianghongdian, impounded 54% of the floods and reduced the floods in the lower reaches.

Shihe Shihe River, known as Jueshui in ancient times, originated in the northern foot of Dabie Mountain at the junction of Henan and Anhui, flowed Niushan River in Huinan, Guanmiao Township, Jinzhai County, and then flowed eastward to Zhugen River, Niushifan River, Mahe River, Shuanghe River, Xiongjiahe River and Baishui River, and flowed to Meishan Reservoir. After leaving the library, five tributaries of the Yangtze River, Hongjian River, Fujia River, Baitafan River and Quanhe River are injected into Hongshizui. Beiliu left the country in Liuxiaomiao Village, Ji Ye Town, Huoqiu, and was irrigated in Jiangjihui, Gushi County, which was called Shiguan River in history. To sanhejian, it divides into two streams, flows eastward through Chencun, Huoqiu County, and flows into the Huaihe River. Shihe River is 220km long, with an average gradient of 1.3 1‰ and a drainage area of 6,880 square kilometers, including domestic rivers 120km and a drainage area of 6,880 square kilometers (including 2 18km in the upper and lower reaches of Quanhe River). The area above Hongshizui is mountainous, with a drainage area of 2,004 square kilometers and a river length of 10l kilometers, with an average gradient of 2.5‰. Below Hongshizui is hilly to plain, with an average slope of 0.38‰. The maximum flood peak at Meishan Station of Shihe River is 9 120 m3/s in the second year of Qingdaoguang (according to the investigation and calculation); 1954 July 1 1 The measured maximum flood peak is 4380 cubic meters per second. After the completion of Meishan Reservoir, the measured maximum outflow on July 6th was 1560 m3/s, and the inflow in the same period was13978m3/s.. There are many tributaries in the upper reaches of Shihe River with steep slopes, and the riverbed is mostly exposed rocks or gravel. Below Hongshizui, the slope is weak, the river channel is shallow and wide, and the riverbed and beach are sandy, with a maximum width of 700 ~ 800 meters. The river channel is unstable, and the two banks are sedimentary platforms, which are vulnerable to floods.

Fenghe Fenghe, known as poor water in ancient times, originated in Zhao He and went out of the hilly area around Nanlindian, Huoqiu County. The Beiliu River passes through Longtou Bridge to the south of Hekouji, joins the Harmony River on the west side, and then flows northward through Hekouji, Zhuta Temple and Niujiao River. After Zhangji, it is called the Loach River, which flows northwest into the West Lake. The river is 44 kilometers long and the drainage area is 680 square kilometers, with an average gradient of 0.5 1‰. Water flows from Gaotang River and Erlijian River in the lake area, then passes through Huoqiu City, and is excavated under people. It is a drainage channel with a width of150m and a length of18km, and enters the Huaihe River from the deep-hole sluice in Linhuaigang, with a total length of 75km and a total drop of 37m. The drainage area is 1.774 square kilometers, of which hills account for 5 1.8%, plains account for 2 1.4%, and lakes and depressions account for 26.8%( 1.447 square kilometers). The upstream channel is 4 ~15m wide, without dikes, and the water depth is about1.8m.. Embankment is built on the downstream bank with a distance of 60-80 meters and a water depth of about 3.0 meters. The wooden boat reached Hekou Town and entered Huaishui, with a voyage of 53 kilometers, which is the main traffic passage in the west of Huoqiu County.

Jihe Jihe was called water in ancient times, named after the East Lake, and originated in the mountainous areas outside the northern Dabie Mountains. The east and west sources meet together, meet in Guzhen, flow northward, pour into Chengdong Lake, and enter the Huaihe River at Liuzikou. The total length is160km, the drainage area is 2,200km2, and the average gradient is 1.9‰. 1958, construction of Pishihang irrigation project. The main canal in eastern Hebei is divided into two parts from west to east. The south of the main canal belongs to shallow mountainous areas and high hills, and the north belongs to sloping fields and plain polder areas.

Xiji River: Originated from Sanxian Mountain and Hongshiling, its source is Shawanxi, with narrow river course and pebble bed. The winding northeast flows to the Huangjian River, and the north flows through Shipodian and Luojiaan. This section of the river is straight and stable. Further north, it crosses Shazuizi, crosses Wu Jia An Canal, the main canal of Jidong, and reaches Zisheng Temple, which becomes the boundary river between Lu 'an and Huoqiu counties. The riverbed in this section is unstable and curved, so the flood can not be discharged in time, and there are often 3 kilometers of water accumulation areas. The Beiliu River passes through Daiwang Temple, and there is a overflow river (originating from Grandma Temple in Jinzhai) coming from the west, crossing Liuhuo (Qiu) Highway Bridge, crossing Hejiayan to Hongji, and there are Toudao River and Erdao River (originating from Jiushu in Jinzhai County) flowing into it. This section of the river is a high ridge and deep ditch with a depth of 4 ~ 5 meters, which is seriously scoured and has no dike. After the flood is collected, it turns to the northeast and flows into Youfang River through the storage ferry. From here to Sancha, Guzhen, there are dikes on both banks, with a distance of 300-500m, a canal width of 20-50m and a water depth of 2-5m. The total length of Xiji River is102km, with a drainage area of 864km2.

Dongji River: also known as Dinghe River. It originated in Wagangchong, Qianjiadian, Dushan, Lu 'an County, crossed Kangjiabu in the north, folded weir and Xiongjiaqiao to Shimenkan in the east, flowed into the slope water of Hengheling and jiepai Stone, meandered north through the bridge and culvert of Jidong main canal, passed through Dabukou, crossed Liuhuo (Qiu) highway bridge, passed through Baoying Temple and Chedu, and joined Xiji River in Sancha, Guzhen. Dongji River has a total length of 82 kilometers and a drainage area of 469 square kilometers. After the east and west rivers meet, it is called Ji River. The river meanders northward into Huoqiu County. From Douyantou to Dayingou, the distance between dikes is reduced from 350m to 150m, and the brick flood at the narrowest part is insufficient 100m, which seriously blocks the water, which is an important reason for the frequent floods in Guzhen and Hongji. Brick flood goes down the mountain to Guanzhuang and into East Lake. Because there is a production dike within the dike distance, the water flow is not smooth. From Guanzhuang to Wulichao, there is a long section of about 13 Li, and rivers and lakes are not divided, and river troughs only appear in the dry season. The Jihe River flows into the Huaihe River from Sancha in Guzhen to Liuzikou, with a total length of 58 kilometers.

Donghe Feihe River, called Feishui in ancient times, has two sources, east and west, and meets in Dongpu. Dongyuan comes from the buried hill in Feixi County, flows northward through Qingfeng Ridge, crosses the Tianhe Aqueduct, the main canal of Pi River, crosses Shibu Bridge, comes from Naguanting, passes through the water in Great Wall Town, comes from Huiyuan Jiaopodian, flows northward to Tanglaowei, and joins the source general mountain from east to west, and enters the territory of Shouxian County. It bends from west to north and meets Xiyuan in Dongpu, with a total length of 49 kilometers, flowing through the territory 14 kilometers, with a drainage area of 2 1L square kilometers. Xiyuan flows from Longxue Mountain in Lu 'an County, flows north through Shibu, enters Feixi County, bends northwest through Jinqiao, passes through the Jinqiao culvert of the main canal of Pi River, and reaches Taipingji in Lu 'an County. The Qinglong weir of Zaoshudian meanders northward, flows into Taoyuan River actively from San Pu via Xu Lijia, then flows northward from the big weir of Jiangxiadian in Feixi County, enters Shouxian County, turns northeast, flows to Dongpu, and merges into Dongpu. It is 56 kilometers long and flows through the territory for 42 kilometers. Watershed area 136 km2. After the east and west sources meet, they enter the plain area, flow northward through Shibuzui and Shipengkou, and enter Wabu Lake after Baiyangdian. Starting from the temple platform, there are dikes on both sides. Below Baiyangdian Lake, rivers and lakes are not divided, and river troughs appear in dry season. It is 96 kilometers from Dongpu to the mouth of Wabu Lake. It starts from Xiyuan in the east and ends at the mouth of Wabu Lake in the west, with a total length of152km, of which the domestic length is138km and the drainage area is 2563km2.

Hangbu River Hangbu River was called Longshushui in ancient times, because it is located in the southeast of Shucheng County, also known as Nanxi. The Shucheng County Annals in Guangxu period of Qing Dynasty was called He Qianhe. After the founding of People's Republic of China (PRC), it was renamed Hangbu River. The old records of ancient books all originated from Jingyuan, Yuexi County, but actually originated from a cat's ear tip in Shiguan, west of Tonganzhai, Yuexi County. The northeast flows through the Longjing River in Xitai, the main source of the book, and flows northward to Yao Xi. Naxi River flows northward into Chawan, Shucheng County, and joins the Tea River that originated in Fengxiang 'ao, Yuexi County. From the east to Xiaotian Town, there are two rivers flowing from south to north, Shizao River and Jiumu River flowing from the west in the north, Xiaohekou in the east, Qilihe River in the right Huishan River in the east, winding to the northeast and merging into Longhekou Reservoir in the gravel beach. This section is customarily called Xiaotianhe. Huashui River and Hepeng River (Wusha River) meet in the reservoir area. Jiujing River passes through Jiujing Temple in the northeast of the reservoir, and Longtan River passes through the right bank. There is a dike on the left bank, crossing Qimen Weir, reaching Xinjie and Gancha River to the east, then flowing northeast through Majiahekou to Baimadang, and Nangang River flowing on the right bank. On the left bank, there is a pig grass ditch connected with Fengle River, and Qingshui River flows south through Zhougongdu. Total length145km, of which the territory is 86km long and the drainage area is 3064km2.

Hangbu River is a mountainous area above Longhekou Reservoir, with a large drop, rocky and pebble riverbed and a river width of 80-200m. Below the Longhekou is a flat fan with a small drop, the riverbed is sandy, and the river width is 120 ~ 300m. Wang Liudu went to sanhe town. Originally, the distance between dikes was less than 100 meter, and the river bottom was only 50 meters wide. Due to the large area of accumulated water in the upper reaches, the middle and lower reaches of the river are curved and narrow, and the flood discharge is not smooth, so floods often occur. Wanli in the Ming Dynasty, Kangxi in the Qing Dynasty and Qianlong in the Qing Dynasty were diverted three times. In the third year of the Republic of China (19 14), the peak flow of the Longhekou reached 6400 cubic meters per second. After the founding of the People's Republic of China, Longhekou Reservoir was built with 1969 mountain torrents, and the inflow was as high as 10320 cubic meters per second. The middle and lower reaches of this river have been regulated many times. The flood discharge capacity from Jiangjundang to Datan Bay is 1960m3/s, and the flood discharge capacity below Datan Bay is 2700m3/s. ..

Fengle River Fengle River was called Taoxi in ancient times, Houhe in Qing Dynasty and He Jie. The total length is 1 17.5 km, and the drainage area is 2080 square kilometers. There are three sources: south, north and middle, all of which are from Lu 'an County. The Zhangmuqiao River in Nanyuan, also known as Xiaojie River, originates from Machagang, a big mountain village, flows northeast to Donghekou to join the east water from Baoerling, Songliao, and flows eastward to Jiangjunshan Aqueduct to Longzui. The Sigutan River in Beiyuan originates from Xiaochun Mountain, and collects the slope water on the east and south sides of the Jianghuai watershed in Zhongdian, Xiaohuashan and Longxue Mountain, and flows eastward to Shuanghe Town. Chenjiahe River in the Central Plains, also known as Zhangdian River and Mapeng River, originated from Porcupine Ridge in Ma Jian and Hengtanggang in Phoenix Terrace. Meet at Zhangjiadian, cross Dashan Aqueduct, flow eastward to Shuanghe Town to meet Sigutan River, and then flow eastward to Longzui to meet Zhangmuqiao River. At this point, the three sources of Fengle River are integrated. Longzui is the junction of Lu 'an, Shucheng and Feixi counties. Historically, there were no dams in the three counties, and the beaches were flooded. After the founding of People's Republic of China (PRC), dikes were built on both banks of the lower reaches to prevent floods, which forced the water level to rise and floods still occurred frequently. After crossing Longzui, it flows eastward, crosses Taoxi Bridge to Sanhe Town, where it once merged into Hangbu River, and now it extends eastward to meet in Datan Bay and flows into Chaohu Lake.