Heavy rain above 150 mm in some east Bangkok areas has filled canals around Khlong Prawet and Bueng Nong Bon, so drainage will be slow while rain continues. BMA says the bueng is being used as a retention basin and is adding mobile pumps. Riverside shop and home owners should watch water levels, move stock to higher ground, and plan travel around the evening rain. New drainage tunnels are still at the contractor-hiring stage, so no relief is coming soon.