Lite info i Bangkok Post
http://www.bangkokpost.com/news/local/264090/drainage-operation-expected-to-take-10-days
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About 5.5 billion cubic metres of northern runoff will be drained into the sea within 10 days, the Flood Relief Operation Command says.
The Froc yesterday said the Royal Irrigation Department will present a plan on how to drain the water to the cabinet today.
Over a 10-day period, the tide will fall and begin to rise again on Nov 10 before reaching a peak on Nov 13.
The Froc estimated that about 9.9 billion cubic metres of northern runoff had been drained to the sea in the east and west of Bangkok and there remained about 5.5 billion cu/m in the north and the west of Bangkok.
At a rate of 550 million cu/m a day of drainage capacity, the water volume should be drained in 10 days.
Deputy Bangkok governor Thirachon Manomaipibul yesterday said the water level in Khlong 2 had stabilised and was likely to fall after the sluice gates at Khlong 9-13 in Nong Chok have been dismantled.
The RID has installed more water pumps at Khlong 13 to drain water to the Bang Pakong River. It is expected the water level in Khlong Hok Wa near Sai Mai district will drop to a controllable 2m at mean sea level, Mr Thirachon said.
With this measure in place, there is an 80% chance that about 20 districts of Bangkok will be spared from the deluge, he said. They include economic zones and areas far from canal sides such as Din Daeng, Phaya Thai, Bung Kum, Bang Sue, Saphan Sung, Watthana, Prawet, Bang Kapi, Sathorn, Thung Kru and Ratchathewi."
