Heavy rain from the August 21 low-pressure system flooded large parts of Tainan, and the city is now asking the central government for a big flood-control budget — bad news for residents still cleaning up, but a possible fix for the future.

• Tainan mayor Huang Wei-che wants NT$1.775 billion from the central government to rebuild drainage systems and add pumping stations.
• One district got extreme rainfall and 23 others got heavy rain, made worse because it hit during a king tide.
• Crews pumped out water equal to a full reservoir, but 51 people were hurt and 567 were evacuated from 20 villages.
• The Sanye River area and neighborhoods near Kun Shan University flooded three days straight, with water coming back every time the rain restarted.
• Economics ministry officials say future planning must cover whole river basins, not just single drainage points.

Outlook: The Zengwen Reservoir is full and releasing water, so flood risk stays high until the rain band clears and the funding request works its way through the central government.