Abstract:
MIKE BASIN is an integrate water resource
management and planning computer model that integrates GIS
with water resource modelling (DHI, 2006). The Bundelkhand
region in Central India has been in the grip of severe drought
in the last decade mainly due to poor, limited and untimely
rainfall and its high variability coupled with improper water
resources development and management. Bearma river is one
of the important tributary of river Ken lies completely in
Madhya Pradesh. In Bearma basin, Irrigation planning and
management has been carried out for drought year (2002).
Study has been conducted and analysed under two different
Scenarios,
(1) : without provision of reservoir in the Bearma basin
(2) : with provision of reservoir in the Bearma basinIn the first scenario, all demands of water users on 10 daily
basis from july 1 to November 10 are fulfilled through river
whereas in second scenario all demands of users on 10 daily
basis are fulfilled by river as well as from the reservoir RS
directly connected through user WU7. In the present study, the
irrigation management in the command of Bearma basin has
been carried out from reservoir releases. In this study “rule
curve reservoir” method was used for addition of reservoir in
Bearma basin. Irrigation demands for soybean crop during the
monsoon period (June to October) on a 10- daily basis for all
users namely WU1, WU2, WU3, WU4, WU5, WU6 and WU7
existing in sub-basins namely SW1, SW2, SW3, SW4, SW5,
SW6 and SW7 have been computed by using CROPWAT. It
can be seen that in scenario (1) there is no provision of
reservoir in the basin, user WU7 used maximum water as
125.55 MCM and deficit is also maximum in this sub-basin
with 88.48 MCM. In scenario (2) with provision of reservoir in
basin, it can be seen that that reservoir RS has used maximum
water of 218.05 MCM and deficit of 42.41 MCM also occurs.
The performance is more noticeable that demand deficits have
greatly reduced from 88.48 MCM to 42.41 MCM for WU7 by
construction of reservoir. It can be appreciated that all the
users that have not been connected to the reservoir are facing
deficits of varying magnitudes under drought situation.
Therefore, it will be prudent to explore additional sites for
reservoirs on different locations so that the deficits can be
minimised to the minimum extent possible.
