Considering the structure of the landscape can be divided
into 4 areas, including
one in the upper basin plains or from Nakhon Sawan, Phitsanulok Basin, including the above. The terrain is mostly flat waves (rolling plains) or plain alley break (dissected plains), which is caused by the action of various river-borne debris, gravel and sand deposition and erosion of water. Some of the actions of the cause flat terraces (terraces) and flood plains of the (flood plain) of the Ping river, and the river. Such areas are about 20-80 meters above the sea level.
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