Flood warning for Chao Phraya basin

Flood warning for Chao Phraya basin

The Royal Irrigation Department (RID) yesterday issued a flood warning for provinces in the Chao Phraya River basin with more water set to be discharged from the Chao Phraya dam from today.

The amount of water running past Nakhon Sawan yesterday was 903 cubic metres per second.

Combined with rainwater and discharge from the Sakaekrang River in Uthai Thani, the total volume of water running down to the Chao Phraya dam in Sapphaya district of Chai Nat province is likely to be 1,300-1,400 cubic metres per second, said Taweesak Thanadechopol, RID chief.

From today, the dam is set to increase the amount of water discharged into the Chao Phraya to between 800 and 1,200 cubic metres per second, raising the water level in the river below the dam, he said.

Mr Taweesak said the department would control the water entering the irrigation system to prevent agricultural areas being affected.

There would be further notification when the water flowing into the Chao Phraya River reached more than 1,200 cubic metres per second, he said.

The department also has ordered officials to work with provincial governors and officials to inform residents. Mr Taweesak asked residents to keep a close watch on water situation.

In Ayutthaya, the water level in Bang Ban, Sena and Phak Hai districts was expected to rapidly rise by at least 1.5 metres.

The RID said it would regulate water through the Chao Phraya dam to prevent damage to farmland on both sides of the river.

In the meantime, Aswin Kwanmuang, the Bangkok governor, yesterday posted information on his Facebook page that the Bangkok Metropolitan Administration (BMA) is cleaning more than 3,000km of drainage pipes across the capital to prepare for the rainy season.

Pol Gen Aswin said Bangkok is in the basin zone, which means flooding is likely when the downpours come. This could cause difficulties for people travelling.

He said the BMA had used a pipe jacking technique to increase the surface and ground water storage area, increased the drainage capacity with underground water tunnels that would work like an underground river, and improved pumping stations and floodgates which would speed up the drainage.

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