
Agriculture Minister Theera Wongsamut, citing the latest flood level update from irrigation resources, said the influx of water would reach 3,900 cubic metres per second while the Chao Phraya's critical level was at 3,720.
He said the ministry was considering building a Bt10-billion flood way to divert more water to sea outlets through the Chao Phraya dam bypassing Tha Chin River and Makham Thao canal in Chaiyanat and Uthai Thani provinces.
Sanya Sheenimit, director of Bangkok Metropolitan Administration's Department of Drainage and Sewerage, said the situation remained normal but was under close watch.
Heavy rain could worsen the problem, as it would add to the Chao Phraya's rise.
In heavily-flooded Ayutthaya, residents and farmers in Sena and Phak Hai districts are said to have resorted to eating snakes and rats or selling them in different menus to earn income after weeks of inundation.
Premature harvesting of rice is widespread in many central provinces where farmlands are flooded, forcing lower rice prices for farmers. In Lop Buri, a flash flood from a recent breakdown of a dam is causing additional inundation of another 20,000 rai of rice paddies, and affecting 3,000 households.
The floods have claimed 132 lives and 3,000 people are depressed, the Public Health Ministry said. About 80 per cent of the fatalities resulted from drowning in flood waters.
Public Health Ministry Wittaya Buranasiri said 8,396 people in 26 provinces reported diseases related to flooding such as athlete's foot, flu, and fatigue.
About 3,040 are suffering from mental health problems, with 339 cases at risk of committing suicide and 410 cases being closely monitored for unexpected symptoms.
The Public Health Ministry has sent over 125,000 pharmaceutical sets to help flood victims in 10 provinces.