Yalong River

Yalong River

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Yalong River is the largest tributary of Jinsha River, also known as Ruoshui River, Dachong River and xiaojinsha river. It is called niyaqu in Tibetan, which means water with many fish. It is one of the most abundant rivers in China. It originates from the southern foot of Bayankala mountain, flows into Sichuan via Qinghai, and enters Jinsha River at sanduezi, Panzhihua City. Above Shiqu is Shiqu River, which flows through hilly plateau area with wide and shallow riverbed and scattered water flow. Shiqu, hereinafter called Yalong River, is one of the main river systems in the north-south direction of Hengduan Mountain area due to its original landform gradually entering into the alpine gorge zone. It has a total length of 1 571 km, 1 357 km in Sichuan, a drainage area of 136000 square kilometers, and an average annual discharge of 1860 cubic meters per second.

Main stream situation

River course

There is a large tributary on the left bank of Jinsha River. In ancient times, it was called Ruoshui, Lushui, nuoyijiang, nuoshui, nuojiang, Zhachu River, donglushui and Dachong River; it was also called Yalong River, Yalong River and Jialong River; it was also called Heihui River, Nayi River, Jinhe River, Dajin River and xiaojinsha river.

The upper reaches of Yalong River are above Le'an township of Xinlong County; the middle reaches are from Le'an township to wulianghekou; and the lower reaches are below wulianghekou.

Upstream section

It originated from the south slope of Bayankala mountain in Chengduo County, Qinghai Province. Shangyuan is called Chaqu (also known as chalagou), and southward flow turns southwest to younadangqu and galagou in Qingshuihe Town, also known as Qingshuihe. The following is also called Zhaqu (zanqu, so it is generally called Zhaqu at the upper source of Yalong River). It flows through Zhujie temple, where Zhenqin town is located, to the south by East, to qunze Temple (zanatan) and lawutan in the East, and to the northeast is the boundary river of Sichuan and Qinghai provinces. Also East into Shiqu County, Sichuan Province, left nanyangyong river. Turn southeast to gayI Temple (gayI township), zuonao bulongba ditch (Yake ditch); turn right to jiaojue Longba ditch and chigongma ditch; turn east to gezeganmadou, Zuona mamukao River (mamuke River, downstream known as Mamu River); and then to Yalong River.

It passes agangongma, right naoyong River, Gemeng Township, right nagolongma gully, and left nahuoranke. There are wengqu, jueyang ditch and zuonazhalong ditch in the county seat of right nashiqu, right wengqionggou in Xinrong Township, left nayaqiegou and duori'a ditch flowing south by East and right nanengkaner River (Xiaqu); turn east by south to pass Yoda, right nalaoxiequ, Mangqu and qishuanggou; turn northeast to zuonagequ in front of Ganma Township in Changsha, and turn east to Wenbo Township, left nankengdeer River and Wenbo gully It flows southeast, right nalangma gully, left naaser laganma gully, latong gully, Nalang gully, and right nadelang gully; it turns to the East and reaches the zuona'ermoyong River in GONGMA township of Changxu. East to changxuganma Township, zunaomuqu. Turn southeast, zuonazezhigou, nylonsongduogou; southeast into dege county.

Turn to the south, Zuona pengtanggou, Mutong Gou, Huoke (Oko Gou), Jiasha Gou; turn to the southwest, zuonayading Gou, right najike, Suke; zuonaxiehuo Gou, right naduke; turn to the south, right nareke (Zhiba Gou), Sancha River; turn to the East, right naleke, shengba gou; zuonarenqingli Gou, longdingke, shenlongke; turn to the south, right naleke (Zhiba Gou), Sancha River Southeast, guowentuo Township, zuonare River Valley, younaruoda valley; Southeast guonian ancient township, younamendake; zuonadingqu. Through zhako Township, zuonayue lalongba gully, into Ganzi County.

In the southeast, it goes through Zake Township, right naodako (odagou); in the south, it goes to qingduo, right naaloqu (Yuqu); in the southeast, it goes left namaiyuqu, xiebugou, right nadaqu. To the east of Renguo temple, where Renguo township is located, zuonalada valley; to the east of Shengkang Township, right narandake; to nanduo Township, left nariran valley; to Gala Township, right narzhuodaqu; to Ganzi County, south of Ganzi Town, left narongchagou. Ganzi hydrological station is located at Yalong bridge, which controls the drainage area of 33119 square kilometers. The average annual discharge is 280 m3 / S (24 years), the water level changes by 3.7m, the sediment concentration is 0.17kg/m3, and the measured peak discharge on July 18, 1970 is 1840 m3 / s. The peak discharge in July 1904 was 3530 m3 / s. After passing Ganzi Town, it turns to the southeast, zuonasigou, xinnigou and tingkagou; it goes out of Ganzi basin and into Xinlong county. It flows southward to the right nashadui gully in Shadui Township, then turns southeast to pass RIBA, left namaiqu and right naasequ. And over dagai Township, right nacheyike. South to Le'an township (mud), the following into the mountain canyon. The upper reaches of Yalong river end here.

Middle reaches

In the middle reaches, it runs southward from Le'an Township, passes through raolu Township, Sewei Township, zuonashalangdenggou, Sewei gully and zexigou; in the south, it reaches the east of Xinlong county (Rulong town), zuonagara xilongba gully. Turn southwest to Russia and Japan, zuonalahilongbagou, Bozi, right nahuoqu; turn south to right nagaranxi river. It passes Bomei Township in the south by East, zuonari Longba gully; it flows to the southeast, younareyiqu gully, zuonaluogu gully, Zeke gully and mula gully. It passes through Maxi in the southeast and JUNBA River in the right; it passes through Heping Township and turns to the East, which is the boundary of Litang County and Xinlong county. Turn to the southeast, right nahayi gully; turn to the East, left nayula, West Longba gully, zituoxi gully, glass Longba gully. Turn southeast, for Yajiang County, Litang County two county boundary river. In the southeast, we pass Rizi, longbagou, zuonalang village. Then to xibalong, right nagawagou and erdigou, zigzag eastward, into Yajiang County,

Zuonas lahi gully and nijilongba gully flow eastward through pubalong Township and are located in Xianshui River, a large tributary of Zuona in Lianghekou. Turn south to zuonaqing river. To the south of Gala Township, there are - Hequ, zuonawan trench and Yajiang hydrological station. The drainage area is 65923 square kilometers. The average annual discharge is 659 m3 / S (34 years), the water level changes 8.7 m, and the sediment concentration is 0.25 kg / m3. The peak discharge in July 1904 is 5840 m3 / s. Pass the station south to the north of Yajiang County (Hekou town), right naxiangkezong River; pass the East Hekou of the county, left nawangga river. Also South, right Na Xiadu ditch, left Na Mazi stone ditch, Regong ditch. In the south, it passes malangcuo Township, right nahuoqu and egaugou, and then bayirong Township, left narurigou. To the southwest is the boundary river of Kangding County and Yajiang County. Zuona liqu passes through Persia River Township (Zi River) and Zuona Jiahe valley. Below it is - Hequ, turning South and right namayan valley. It passes through Yayi River Township, right nadengxia Valley and jueni Valley, and flows southward to the boundary river of Muli County and Kangding County. Zuona hot water ditch; also for Muli County, Jiulong County two county boundary river. Right nablin Yonghe, ajiang Yonghe, Zuona Dahaizi gully (Shangtuan gully); right Naxi gully, Jialang gully, right namengdi gully, zhangya gully, bawolong gully. You also have Zhandu gully, bowogou gully and sanyanlong gully in Zuona. Right nadanbo groove. South by East into Muli County.

In madilong, you Na Baduo ditch, Zuo Na luowo ditch; you Na Qiyi ditch, Masa ditch, Zhani ditch; you Na Dabi ditch, Xianwei ditch; you Na Xiatian town ditch, Zuo Na Yang ditch, Luotuo ditch, Hongshui ditch, you Na Yazui river. Turn to southeast flow, younaganggouzi, zuonachadigou, and zuonadwarfgou; to baidiao Miao Township, there is baidiao hydrological station, which controls the drainage area of 83361 square kilometers, with an average annual flow of 876 cubic meters per second (3 years), and water level variation of 8.8m. The peak discharge in July 1904 was 7610 m3 / s. Pass the station and turn to the East, enter Yanyuan County, and take Wuliang River as a tributary. The middle reaches end here.

Downstream section

The lower reaches of the river, after the youna Wuliang River (Litang River), turn north by east to form a huge meander around Jinping Mountain. It is a big bend of the Yalong River and reaches Wali in the north. It is controlled by Wali hydrological station, with a drainage area of 102406 square kilometers, an average annual discharge of 1170 cubic meters per second (22 years), a water level variation of 12.1M and a sediment concentration of 0.4kg/m3. The peak discharge was 9580 in August 1924 Cubic meters per second. Passing through the station and Mai Di Ping, it is the boundary river between Muli County, Yanyuan County and Mianning County; passing through bodybuilding, it is the boundary river between Jiulong County and Mianning County. Zuonazier river. North by east across the River Township, Zuo Na Jiulong River. Turn northeast, Zuona chuanbangou, yangtianhe; turn east, Zuona Sanya ditch; then enter Mianning County.

Turning to the south by West and passing Miansha Township, it is controlled by Luning hydrological station, with a drainage area of 108277 square kilometers, average annual discharge of 1370 m3 / S (34 years), water level variation of 12.1M and sediment concentration of 0.43kg/m3. The peak discharge was 11700 m3 / s in July 1863. After passing the station, turn south to Sanchahe, zuonamadigou (formerly known as madigou); turn south by west, pass Lizhuang Township, right to Mofanggou, which is the boundary river between Xichang City and Yanyuan County. Shangdahewan river is 152 km long with a straight-line distance of only 20 km and a natural water level drop of 350 M. It flows southward to the right namasluo Valley, then turns East and south, then turns to the left naxiliu valley; it flows southward and East, then turns to the right naheishui River; it flows to the left nadaqiao River; it flows into Yanyuan County, then turns to the right nameizibao River; it turns to the East in Jinhe Township, it is the boundary river between Yanyuan County and Xichang City, Yanyuan County and Dechang County; it flows southward to the right nawudao River and Shuwa River, it is the boundary river between Yanyuan County and Miyi County. At the gate of the river, you can see the Xiangshui River on the left, the natengqiao River on the southwest, and the boundary river of Yanbian county and Miyi County. In the south by west, right naxiangfanggou, left nasongpingzigou; in maopingdu, right najiayu River (upsetting Fish River); in the south by East, right nalima River and Hongguo River; in the southeast, through Changgou, there is Ertan Hydropower Station double curvature arch dam site.

Chinese PinYin : Ya Long Jiang