Soil texture is another factor proven to be connected
with flood. Soil with fine texture such as that
with a high proportion of clay particles may disrupt
the water drain-age from the area, causing swamps.
Soil with a lower clay proportion, on the contrary, accelerates
the draining. This attribute was expressed
in our experiment in terms of soil drainage capability
(P7), and was categorically divided per administrative
district into 2 levels (i.e., bad and control) as
illustrated in Fig 8.