Northeastern Mekong

1. Beautiful watershed, mostly flat areas, located in the lower part of the northern watershed. It has an area of ​​approximately 1,336 square kilometers. Most areas have swamps and swamps scattered around. And the upper area will be to the south It looks like a sloping area and a little low hill in the headwaters. With sub-branches spread across 2 provinces, namely Nong Khai Province And Udon Thani Province

 

2. Maen River Basin The area mainly consists of the tip of the Phu Phan mountain range, which is separated between the upper river basin. And the lower river basin in the northwest line that flows into the southeast Approximately 2,645 square kilometers The watersheds of other tributaries in the south are just hills. And the area cant In which the condition of most areas is smooth Covering an area of ​​4 provinces, namely Nong Bua Lam Phu Province, Loei Province, Udon Thani Province And Nong Khai Province

 

3. The river basin consists mainly of high-rise mountains throughout the watershed. It covers an area of ​​881 square kilometers in the south and east with an area of ​​about 1,300 meters above sea level and gradually decreases in the middle of the area, which is quite steep. Has a little flat ground The main riverside areas are Huai Nam, Khao Mun, and the San River, which covers the province of Loei. With a total of 3 river basins, namely the upper sarn water, the creek water into it And lower water

 

4. The soma river basin consists mainly of high mountains to the east of the area. It will have an area of ​​approximately 1,118 square kilometers. The mountain range in the west is approximately 600 meters above sea level. Which is about 500 meters higher than the east of the sea level. From the mountain range on both sides and gradually descend into the water in the middle of the area. Most of the area is mountains and slopes. There is not much flat area. Most of them are scattered on two banks of the river, covering an area of ​​2 important provinces, namely Nong Khai Province. And Udon Thani Province Consists of 3 branches of river basins, namely Huai Nam Rang, Upper Ginseng River And the lower Huai Nam Som

 

5. Mekong River Basin Part 3 The area is mainly composed of surrounding mountains. It has an area of ​​approximately 690 square kilometers. It is about 1,000 meters above sea level and slowly slopes down to the north. The situation is high. It is also considered as the water of the other small tributaries that are steeped in several streams that flow into the Huong River. Which is a river of Mekong to the north Which will cover areas in Loei Province The three tributaries are the Mekong River, the upper part, the Hu Nam and the lower Mekong River.

 

6. Mekong River Basin Section 4 covers an area of ​​approximately 794 square kilometers. It consists of hills that are scattered throughout the watershed. Especially the mountain line to the south Which is considered an area upstream with an altitude of about 600 meters above sea level. The height of the mountain will gradually decrease and the north will have a height of about 300 meters above sea level. Which these hills cause beyond the small, steep branches flowing into the Huong River Which is the Mekong River to the north Covering the province of Loei There are 3 branches of the Mekong River, the upper part of the Mekong River, the Nam Khong and the lower Mekong River.

 

7. Mekong River Basin Part 5 The area mainly consists of Khao Krachao, located around the entire watershed. It has an area of ​​approximately 1,760 square kilometers. It has a height of about 600 meters above sea level. As a result, they attach to these small tributaries, which lead to steep slopes that flow from the south into the Mekong River in the north. Hilly And slope Covering the 3 provinces, namely Udon Thani Province, Loei Province and Nong Khai Province. There are four tributaries of the Mekong River, the upper part 5, Huai Nam Chom, Huai Sa Ngao and the lower Mekong River part 5.

 

8. Mekong River Basin Section 6 covers an area of ​​approximately 553 square kilometers. Most of the area is the plain along the Mekong River, the condition is mainly composed of a mostly flat area, with a lot of marshes and marshes scattered in the area. With several short streams that flow directly into the Mekong River Which covers an area of ​​2 provinces, namely Nong Khai Province And Udon Thani Province There is only one branch river basin, namely the Mekong River, part 6.

 

9. Mekong River Basin Section 7 The area boundary covers the watershed in the north, east and west to the Mekong River. It has an area of ​​approximately 2,556 square kilometers. At the border between Thailand And the Lao People's Democratic Republic To the south, it will be along the Mae Songkhram watershed, Huai Khong, Huai Hou, with its sub-tributaries that will flow directly into the Mekong River. Typically, the area is a flat area next to the Mekong River. To the south of the area will be the Don River basin. There is only a small amount of plain along the river. Covers an area of ​​2 provinces, namely Nakhon Phanom Province And Nong Khai Province has four main basins, namely the upper Mekong River 7, the middle Mekong River, Huai Bang Bat and the lower Mekong River part 7.

 

10. Mekong River Basin Section 8, the area has a watershed approximately 160-190 meters above sea level. It has an area of ​​approximately 1,145 square kilometers. Divided into sub-river basins The 8th Mekong River and the river basin bordering the east of the river basin adjacent to the Mekong River in Nakhon Phanom Province. The west side of the river basin is the main river which is Huai Bo, Bang Ko Huai and Bang Huai Huai. There is an area of ​​the upper river basin, which is a clear mountain with a high slope. Which is located in the middle of a plain to undulating waves At the bottom it is relatively smooth. That covers the area in Nakhon Phanom Province There are 3 branches of river basins: Huai Bangor, Huai Bo and Huai Bang Huak.