Climate change As a result, the amount of rainfall from June - October 2554, which is higher than the average of about 39% in the North and higher than the average of about 22% in the region are influenced by the pie tropical Hai Ma birds Stekelenburg. Shanghai Tang's name splashed analog and power at low pressure trough lies across the northern third 10-12,15-19 during August and 8-12 September 2554, more than the usual amount of water to the port. The maximum amount of water that flows continuously from August. - Mid October 2554 and came together. E. Nakhon Sawan, the maximum water Prima at 4,686 m / s and the Prima at 36,961 million cubic meters of water flow. M., Over the years 2538 to 9,890 million cubic meters, physical characteristics and topography. Boosting the Central Basin is the area most vulnerable to flooding, and the topography of the upper basin of the lower slope, the water is low lying areas contributing to runoff in custody.