EXISTENCE OF POTENTIAL/BASIC PRE REQUISITES FOR DEVELOPMENT
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The States of Andhra Pradesh, Karnataka, Kerala, and Tamil Nadu extend across the southern cone of the Indian Peninsula. These states are drained by the Godavari river to the north, the Krishna river in the central zone, and the Cauvery river to the south. The three major rivers rise in the high plateau areas of the Western Ghats, and flow eastward across the Deccan Plateau before discharging into the Bay of Bengal.
They are the primary sources of water for an extensive network of irrigation schemes. Prior to independence, several major irrigation dams were constructed on the Cauvery river in both Karnataka and Tamil Nadu, including the Krishna Raja Sagar (KRS) and Mettur schemes respectively. A few other large irrigation dams were constructed on the main tributaries of the Godavari (i.e., Nizamsagar) and Krishna ( i.e., Tungabhadra) Rivers.
Since independence, large new irrigation dams have been constructed on all the three major river systems, including the Sri Rama Sagar on the Godavari River, the Nagar Junar Sagar and Upper Krishna systems on the Krishna River, and the Hemavathy in the Cauvery River basin. Moreover, a wide range of smaller dams and diversion structures and canals have been built to extend the irrigation network throughout the southern region.
The state of Punjab is located on the Indo-Gangetic Plains which has a much more gently graded topography than exists in the south. Since the available heads at the majority of canal drops is less than five (5) meters, power generation is feasible only because of the relatively large flows which are available in the canals for over ten months each year
potential for power generation on these existing irrigation dams, diversion
weirs, and canals in the four southern states is particularly good
because of the following factors.
development of schemes at existing Irrigation Dams and canal drops will
be beneficial especially because of a
slowdown in the conventional development of large hydropower projects due to
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