Korambus
Korambu is a temporary dam stretching across the mouth of channels,
made of brushwood, mud and grass. It is constructed by horizontally
fixing a strong wooden beam touching either banks of the canal.
A series of vertical wooden beams of appropriate height is erected
with their lower ends resting firmly on the ground and the other
ends tied to the horizontal beam. Closely knitted or matted
coconut thatch is tied to this frame. A coat of mud is applied
to the matted frame. A layer of grass is also applied carefully
which prevents dissolution of the applied mud. Korambu is constructed
to raise the water level in the canal and to divert the water
into field channels. It is so built that excess water flows
over it and only the required amount of water flows into the
diversion channels. The height of the Korambu is so adjusted
that the fields lying on the upstream are not submerged. Water
is allowed to flow from one field to another until all the field
are irrigated. They are built twice a year especially before
the onset of the monsoon season in order to supply water during
winter and summer season. In Kasargod and Thrissur districts
of Kerala, Korambu is known as chira. |
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