Justice Minister Pracha Promnok said run-off at Nakhon Sawan alone was at 8 billion cubic meters. The capacity for Chao Phraya River to drain run-off into the sea is at 550 million cubic meters per day.
Transport Minister Sukumpol Suwanatat said the drainage would take at least 20 days to complete. The Central Region would be inundated and it will take about a month before the recovery efforts could start, he said.
For Bangkok, Sunday will be most critical as major run-off would pass before reaching the sea at Samut Prakan.
The Nation