What river basin does Dehong belong to?

Dehong Prefecture is composed of salween River System and Irrawaddy River System.

Dehong Prefecture is a cut mountain plain in the southwest of Hengduan Mountain and west of Gaoligong Mountain, which inclines from northeast to south to west.

The basic features of the topography in Dehong Prefecture are high and steep in the northeast and low and wide in the southwest. The ravines are staggered, and the mountains and rivers are parallel and steep. The highest point in the state is Daniangshan (Daxueshan) in the north of Yingjiang County, with an altitude of 3,404.6 meters; The lowest point is Jieyang Valley in the west of Yingjiang County (the intersection of Sarah River and murray river River in Nabangba), with an altitude of 2 10 m; Generally, the altitude is 800 to 2 100 meters. Mangshi, the capital of the state, is 920 meters above sea level. Its surface landscape is mainly composed of "three mountains" and "three rivers and four rivers" extending south of Gaoligong Mountain Range. "Three Mountains" are the tail main veins of Daniang Mountain, Daying Mountain and Gaoligong Mountain, "Three Rivers" are Nujiang River, Daying River and Ruili River, and "Four Rivers" are Mangshi River, Nanwan River, Husa River and Mandong River.

Salween River System:

Nujiang, also known as Lujiang, is a big river in the southwest of China. Its upstream is called Naqu River in Tibetan, which originated from Jire Paige at the southern foot of Tanggula in Qinghai-Tibet Plateau. It goes deep into the Qinghai-Tibet Plateau, from the northwest to the southeast of the first bay of Nujiang River, obliquely passes through the shallow valley of Dongping Lake in Tibet, flows into Yunnan Province, passes through Nujiang Wa Autonomous Prefecture, Baoshan City and Dehong Autonomous Prefecture, flows into Myanmar, is renamed salween, and finally flows into the Andaman Sea in the Indian Ocean. The total length from Heyuan to Hekou is 3,240 kilometers, the China part is 20 13 kilometers, and the Yunnan section is 650 kilometers long. The total basin area is 325,000 square kilometers, and the China part137,800 square kilometers; The total runoff is about 70 billion cubic meters, and the basin area of the province is 33,500 square kilometers, accounting for 8.7% of the area of Yunnan Province.

Irrawaddy river system:

Including Dayingjiang and Ruili River.

Daying River, a tributary of the upper reaches of Irrawaddy River, originated at the southern foot of Gaoligong Mountain and crossed hundreds of miles of virgin forest canyons to Yingjiang Plain. The flow rate slows down and the river widens. There are endless farmland on both sides, villages surrounded by bamboo forests, and thousands of miles of phoenix bamboo dikes on the banks of the river. When you are in the middle of the river, you can see green islands, blue sky and white clouds, green bamboo island reflected on the long river, and the boat gently crossed.

Dayingjiang is located in Yingjiang County and Ruili County, Dehong Prefecture. It is about 800 kilometers away from Kunming and 900 meters above sea level. This area is the most subtropical tourist attraction in Yunnan. The Danzha River and the Binglang River, which originated in Tengchong County, are called Daying River after they meet in the old town of Yingjiang County. After crossing Tiger Jumping Stone, it leaves the country from the mouth of Nanben River, flows into Irrawaddy River in Myanmar and finally flows into the Bay of Bengal. Dayingjiang is 204.5km long, and Yingjiang County is145.5km long. Dayingjiang has a concrete bridge in Yingjiang County, which is 7 meters wide and 37 1 meter long. It is one of the longest highway bridges in Yunnan Province at present. In the flood season, it looks like Changhong lying in the waves from a distance, which is very spectacular.

Ruili River was called Nanmao River in ancient Dai language, Shuimo River and Luchuan River in Yuan and Ming dynasties, Longchuan River and Ruili River in Qing dynasty. This river has irrigated hundreds of millions of hectares of fertile land in China and Myanmar, and raised nearly one million people. The upstream of Ruili River is called Longjiang, which originates from the west side of Gaoligong Mountain, flows through Longchuan and Lianghe counties in Tengchong, flows into Myanmar through Wan Ding and Ruili, and joins Irrawaddy River near Iniwa, Myanmar. Among them, more than 20 kilometers of Ruili River belongs to the border river between China and Myanmar, which is one of the important rivers in western Yunnan and belongs to the subtropical long-flowing river. The water in Ruili River is gentle and clear as a mirror, with fertile fields on the banks of the river and picturesque scenery surrounded by trees and bamboos in Dai villages.