The upstream source of Nanguang River is called Luobu River, that is, the upstream of Fuheishui (now Nanguang River), which originated from Fenguan Mountain (now Yanglongwan Liangzi) in Nanguang County. Because it flows through Heidun (now Shunhechang), it was named Heidun River in Qing Dynasty. It originated from the workshop at the west foot of Liangzi, Yanglongwan, Gaotian Township, passed through Tungsten City, Gaotian Township, Luobu Town and Shunhe in the northwest, arrived at Laocheng River (Yuyuegou) in Chenkoulinna, the old city, and left the country at Shunshan (Chawan) adjacent to Luobu Town, Malone Office, and entered Gongxian County, Sichuan Province. The territory is 50.70 kilometers long, the drainage area is 468 square kilometers, the average river bed gradient is 20.68‰, and the average flow rate is 13.55 cubic meters per second.
Starting from Gongxian County, the river flows from southeast to northwest, passes through Guandoumiao Township and receives a progressive stream. To Shibeichang, Jianwu River in Zuo Na and Songpingxi in Yongxing; When I arrived in Cao Ying Township, the moon fields and streams came to meet; To Caoyingchang, Phoenix Creek and Xincun Creek flow in from the left and right banks respectively, and then flow into Paradise Creek to the left; To Haitangba, right to Lumingxi; Go to Luodu Miao Township, left to Guangjinxi, right to Longdongxi; To the waterwheel dam, Luohe flows in from the left; To Xinqiao village, the crab stream flows in from the left; To Zhaizi village, the stream from the gun house flows in from the left; At the flowing water of Tianjiaba in Shangluo Town, Landixi flows in from the right; Further on 1000 meters, Shengli River and Wang Jiaxi enter the exchange from left and right respectively; After another 2,000 meters, the Hanjiahe River will be incorporated downstream from the left; On the south side of Shangluochang, Hancun River flows in from the southeast; North of Shangluochang, Jinzhongxi, Zuo Na; Further 1500m, take the right democratic stream; To Zhongshan Township, Junlian Lengshui River (also known as Le Yi River) flows from the left; After another 2000 meters, you can have fun on the right, build a new stream and leave Tianqiao Stream on the left. Go to Gaojian trough and agree that the flow will flow in from the right.
To the estuary at the junction of Xunyun (Gonghe Village, Mutan Township), Weixin River, Zuo Na; Xunsi River (also known as Baifantan River) north of Tengda Town, Junlian County, Zuo Na; Opposite Xinmin Village in Mutan Township, Hongxing River in Junlian County flows in from the left; After passing peony, it re-enters Gongxian County, and the groundwater in Xiangshui Cave is injected into Nanguang River; To my sister's nest, I started from Baoping and Charlotte, left Lifuxi and right Jinsuoqiao Creek; To Gongzhouwo, the new stream flows in from the left; To Chen Xiaoer Xiaoer Factory, Wengxia Xichuan Xiaoer Street Village is included from the right; For the dutiful son, the Hill River enters from the right; To the ridge of the land, Longtan Creek, which originated in Gaoxian County, flows in from the left; To Dayetan, Xiaomi River in Hengfeng Township is on the right, and Tongzi River is on the left. To Chenghuangyan, Wachangxi flows into the confluence from the right; Zhiguan Ertan, Zuo Na Taipingxi and Youna Xiaoxigou. Nanguang River in Gongxian County is 60.95 kilometers long, with a river width of 50 to 150 meters and the deepest water level of about 20 meters. The beach is steep and steep and navigable.
After that, it flows north from Huangtuo to Shangyou Oil Mill in Gaoxian County, passes through Wenjiang Town, Qingfu Town and Jia Cun in Gaoxian County, passes through Fu Jiang, comes to Fuzhen Town, bypasses Yuejiang Town, reaches Nanguang Town in Cuiping District of Yibin City, and joins the Yangtze River.
Nanguanghekou section; Nanguanghe is a large tributary on the right bank of the upper reaches of the Yangtze River. It originates from the northern foot of Daxue Mountain in Weixin County, Yunnan Province, enters Yibin City through Xingwen, Gongxian, Junlian and Gaoxian in Yibin area, and joins the Yangtze River in Nanguang Town. The total length of the main stream is 222 kilometers, with an area of 162 kilometers, a drainage area of 4,826 square kilometers, and the urban flow is 8 1 kilometer.
The reach above Luodu of Nanguang River was called Dengjiahe in ancient times, and the reach from Gaotian to Luodu was called Fushui in ancient times. There is also a tributary called Luo Haihe River (Banbianqiao River), which runs from the rocky foot of Luobu Township at the source to the Shuicheba reach, which was called Heishui in ancient times. Therefore, the reach above Luodu of Nanguang River was collectively called Fuheishui in ancient times, and the reach below Luodu Bridge was collectively called Nanguang River.