2024-08-26 10:02:00
Water management experts pointed to 3 main factors: Nan province has had severe floods in the past 100 years, noted that Sukhothai can still cope, Phichit is next, and believed Bangkok will survive, unlike 2011.
In the past 10 days, rainfall and floods have occurred in many places. This is a message from the Disaster Mitigation Department summarizing the flood situation across Thailand. From August 16 to 26, 2024, 13 provinces were affected, including Chiang Rai, Chiang Mai, Phayao, Nan, Lampang, Phrae, Sukhothai, Phetchabun, Udon Thani, Rayong, Phuket, Yala and Nakhon Si Thammarat. A total of 16 districts, 270 villages, 1,469 sub-districts, and 30,953 households were affected, with 22 deaths, including 2 cases in Chiang Rai, 2 cases in Phayao, 3 cases in Nan Province, 2 cases in Phrae Province, and 13 cases in Phuket.
At present, there are still floods in the five provinces of Chiang Rai, Phayao, Nan, Phrae and Sukhothai, with a total of 32 districts, 125 subdistricts, 737 villages and 11,858 households affected by the disaster.
At the same time, the meteorological department predicts that rainfall in Thailand will increase from August 26 to 28, with heavy rain in some areas. There will be heavy rain in parts of the northern region. The upper northeastern region, the eastern region, and the southern and western regions. People in the area are requested to pay attention to the dangers of heavy rain, heavy rain, accumulated rain, etc. that may cause flash floods and flash floods. In particular, hillside areas and low-lying areas near watercourses are also included.
Mr. Chawalit Chandrarat, director of TEAM Group and water resources management expert, discussed that the reason why the flood path including “South” has suffered more than other provinces in these 100 years comes from 3 factors, including:
1. There are no “monkey cheeks” in the Southern Province to help store water.
2. The area is feathery, which means that the tributaries completely flow into the main river Nam River, so when it rains, it flows from the upper part of the province, namely Chaloem Phra Kiat District, Tha Wang Pha District. Nanhe. The short distance resulted in severe, intense and rapid flooding in the Southern Province.
3. In the first three days, from August 16 to 18, the rainfall exceeded 100 mm, and from August 20 to 21, the rainfall exceeded 200 mm, that is, 250 mm. Areas wet with water. As a result, Nanfu Province suffered the most severe flooding. Even if you move your pet in time
Chiang Rai: There are no monkey faces, but the water can flow into the Mekong River. But it may flow a little slowly. Because the water level of the Mekong River is very high but it is still enough to flow down. The water comes from northern Myanmar like the Kok River and we have very little information. But I found that there was a lot of water flow, so I reduced it 2 times like this. “Rapid rise and fall” means that the rainfall in the area is not continuous.
While in Thailand, it was found that there was rainfall on August 17-18, less rainfall on August 19, and more rain on August 20-21, enough to drain the water. Even a slow dose
Therefore, in areas where the picture is clearly visible, such as “Mae Sai”, Sailom Joy Market, meaning that the rainfall on the border between Myanmar and Thailand is similar to that in Thailand, there is a decline in rice and other products. Not to the point of death yet. Since the water in Chiang Rai has been stagnant for about 1-2 weeks, the rice is still acceptable. Except for some areas where mud flows. Most of the damaged areas in Chiang Rai are commercial areas with trade.
Phayao: The terrain is highland. Allows for fairly good drainage. Although it rains heavily, it drains quickly. As for the remaining water, some water was found in the Thoeng District area, which was recently found to be almost completely drained. Some places are agricultural areas, and rice fields are still available.
Lower Phayao is still considered undamaged because of the high slope. When the water flows converge, rainwater flows from Chiang Muan, Pong district to Kaeng Suea Ten, Huai Sak and Ngao rivers. When the water flowed into Mae Yom Weir in Phrae Province, it caused a flood of 3 to 4 meters.
spread: There are irrigation systems that can manage to flow directly into the rice fields. This allows it to be managed as the “monkey face” in many places, holding 1.2 billion cubic meters of water. If released it would certainly flood Saphan Chan in Sukhothai Province’s Sawankhalok district, where there is a water gate at Saphan Chan beach. Help water flow to Phitsanulok. The problem with going to Khlong Yom-Nan is that it is not yet complete, and it can divert the sudden influx of 100 cubic meters of water. causing the project to be affected and damaged. But another part of the damage is the spread of water.
Sukhothai: The overall picture will be damaged. But important areas are still considered “survived” but “survived to the maximum extent”, i.e. the water barrier has not yet been breached. Sukhothai still exists.
Many people are worried about whether Sukhothai’s weir can be handled. That doesn’t help much as the earth-cement weir requested in the budget has not yet been received. Because it is a “mini” size flow slowing weir if it is the Saphan Chan beach weir, this is different from the “weir” above as it performs a similar function. “Pratunam Chao Phraya” is smaller but if it is a general weir it can only serve to slow down the flow of water.
Although some dams have been destroyed such as in Sawankhalok area only farmland has been destroyed. But if the flood gates at Saphan Chan Beach do not burst, important areas will not be affected.
“The next one is Phichit Chum Saeng, which is considered a frequently flooded area. Because Nakhon Thai floods, part of it also comes from Phitsanulok. It merges at Chum Saeng. This is considered damaged. But the villagers are well prepared because we often see that next to Chum Saeng, and then Nakhon Sawan, there is Monkey Cheek, and there is not much water in Sakae Krang.
Mr. Chawalit concluded that For Bangkokians, there is no need to be afraid of what happened this time. Because from Tha Wang Pha to Nan and Na Noi districts, all the water flows into the Sirikit Dam. Now, the water capacity of Sirikit Dam is still much more (water volume is 6.674 billion cubic meters (70%), water storage capacity is 9.51 billion cubic meters, and actual utilization is 3.824 billion cubic meters (40%). Source: National water affairs data as of 8 Archived on March 26) The waterway will start from Phrae and Sukhothai, and then from Phichit and Chunsein, transporting water to Nakhon Sawan Province, which can receive water. Because there is not a lot of water in Pinghe and Wanghe.
Is there any chance of another wave of rain? But the water won’t flood like it used to. Only Phichit and Chum Saeng remain where the water has not yet reached. Arrival soon As to when you arrive the water mass is not very big. Only Lam Nam Yom has begun to decrease in Phrae Province…
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