Thailand's National Water Resources Committee approved 509.7 million baht in emergency spending for 99 urgent projects addressing nationwide flooding, drought, and water quality. Critical alert: heavy rainfall expected Sept 23–27 across multiple regions; Chao Phraya downstream areas face potential 0.75–1.25 meter water level rise if discharge reaches 1,500 m³/sec, affecting flood-prone areas in Ayutthaya, Pathum Thani, Sing Buri, and Nakhon Nayok provinces. SMEs in agriculture, logistics, and manufacturing in these zones should prepare contingency plans.