Tanggula Mountains in Qinghai originated in the territory of veins at the northern foot of snow-capped mountains in winter Gela Dan, is the border of Tibet and Sichuan. Jiang in Daxian County in Sichuan, Qinghai and Sichuan, the junction (Dengke River County township of Ha covered the mouth) into the Qamdo area of the border, reached by Jiang, and Gongjue Mangkang County, and so on the eastern edge of the center line to Batang County Michael Qu near the mouth of the West Jinsha river side of the mouth Department into the Department of Yunnan, Lijiang in Yunnan, and then eastward to the fold for the upper reaches of the Yangtze River. Jinsha River section in the Qamdo area 587 kilometers long, Jiang surface elevation from 3340-2296 m, 1044 m drop, the drainage area 23,000 square kilometers, the average annual flow of 957.3 cubic /S annual runoff 30,190,000,000 cubic meters (Batang station). Jinsha River valley features of the landscape can Dege County, white mouth music and Matang near the mouth of Maqu County is divided into upper, middle and lower third. Among the upper valley and white for the Gap kuan, in the middle for the deep gorge, under the section for the narrow valley between the Valley section. Last paragraph: Wide valley and white, from rural Dengke qaha Dege white mouth to mouth Qu 207 km long, the surface elevation of Jiang's 3340 - 2980 meters, 360 meters gap, with an average gradient was 1.74 ?. Valley of the paragraph on the depth of cut for the 1000 - 1500 meters, the river valley slope valley about 30 � in general. Valley By the state geological structures and lithology affect the valley slope, and the canyon was narrow valley (gully) phase distribution. Canyon section of a single bed, in order not to development. General width of about 90 meters, the river cut into the bedrock. General narrow valley bottom width of the paragraph in the 500 meters or so, the teams have alluvial mizoguchi or mud-rock flow and development platform. One of the biggest Valley Valley at the northern end of the paragraph Dengke gully, this section of river about 40 kilometers long, Jiang's surface around 3300 meters above sea level, open valley and straight, to show the North West, is controlled by the structure of the valley. Wide bottom 2 - 3 km This multi-braided river, flood plain, the river Chau development, Zhigou on both sides of the alluvial fan development, So that the regression line the river twists and turns, the river terraces were asymmetric distribution of the above valley is the major rivers in Qamdo area in valley of the most generous. In the other valley, a single bed is still the main river, river beaches are very rare. Middle: deep gorges, from Dege curly white mouth to mouth of Batang Maqu, a long river of 2 1 km above sea level in the river 2980 - 2482 meters, 498 meters gap, with an average gradient was 1.71 ?. Valley section of the relative depth of the cut in the 1500 - 2000 meters, the river valley slope valley in general more than 30 �. Valley River Valley is clear that the upper valley Valley gentler slope Lower part of the steep, the valley there are other stars-shoulders of the distribution platform. Gu slope instability, collapse, landslide and mud-rock flow occurred frequently. Deep river rock, river bed in many rapids, dangerous shoals, the vast majority of the lot is the bottom of the riverbed. In some smaller into Zhigou Department occasionally landslide debris flow fan development platform, local Shaokuan Valley Village See terrace distribution, such as the River Po Kong reached up near the terrace levels were higher than the river 25 meters and 65 meters. Qamdo is a section of the river valley in the territory of the most narrow section of the Jinsha River valley. Next: a narrow valley between the Valley, this paragraph from the valley to the mouth of Batang Batang Maqu County, near the center line of the song Michael southwest of the mouth of the river Sha Kong Department of mouth, 87 km long, the surface elevation of Jiang's 2482 - 2296 meters, 186 meters gap, with an average gradient was 2.14 ?. Valley section of the relative depth of the cut in the 2000 meters or so, the valley slope valley is generally about 30 �. River Canyon section of 100 meters wide, single bed, the river cut Rock, the terrace is not development. This folder by the narrow river valley, the bottom generally about 500 meters in width, a wide river, there is a narrow terrace and support Mizoguchi flood debris or development platform. Batang bamboo cage as the Palestinian side of the Jinsha River in the vicinity of the bridge more than 200 meters wide, can see the lower reaches of the river and flood plain development Chau.
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