The Bangkok Metropolitan Administration says about 329,000 families (around 700,000 people) are affected. Worst hit are Lat Krabang, Khannayao and Bang Kapi. Officials say the main canals (Saen Saep, Prawet Burirom) need about three days to drain, and deeply flooded Lat Krabang about a week. For a Bangkok business, expect disrupted staff commutes, delivery routes and stock in the eastern and northern districts. Check on staff and premises in low-lying areas, and move stock off floors. The BMA is asking for drinking water and dried food donations, and reports help calls on 1669 and 1555.