**10.1 Polavaram project**

*Hydrology*

**Figure 2.**

both in India and Nepal in order to conserve water during the monsoon season for irrigation and hydro-power generation, besides checking floods. The Himalayan part of the India is comprised of 14 inter basin water transfer network including Brahmaputra-Ganga, Kosi-Mech, Kosi-Ghagra, Gandak-Ganga, Ghagra-Yamuna, Sarda-Yamuna, Ganga-Damodar-Subernarekha, Subernarekha-Mahanadi and Farakka-Sunderbans. The Inter basin water transfer network in Himalayan part of

The Himalayan part of the India has 16 important river networks, has two sub-components: (1) Transfer of Ganga and Brahmaputra rivers surplus waters to the Mahanadi Basin and from Mahanadi to Godavari, Godavari to Krishna, Krishna to Pennar and Pennar to the Cauvery river basins. (2) Transfer of water from the Eastern Ganga tributaries to the western sects of the Ganga and the Sabarmati river basins. Altogether, those river water transfers network will mitigate the floods issues within the eastern sects of the Ganga Basin and gives irrigation water delivery to the western sects of the Ganga. The Himalayan sects needed large number of dams in Bhutan and Nepal to capture and divert flood waters from the tributaries of the Brahmaputra and Ganga rivers, and also within India to divert the surplus waters of the Godavari and Mahanadi rivers. The amount of water diverted in the

be Rs.1,85,000 crore. The gross hydroelectric power generated may be 30 GW [11].

There are many river linking projects are successfully completed or operated by

**10. Successfully interlinking Indian rivers projects**

. The overall project cost of the Himalayan part is to

**74**

the India is shown in **Figure 2**.

*Inter Basin water transfer network in Himalayan India.*

Himalayan part may be 33 km3

the Govt. of India is explained below:

It is also called Indira Sagar project. It is a multipurpose project built on Godavari river in the state of Andhra Pradesh. It has assessed culturable command area (CCA) of 2.91 lakh hectares and hydropower generation capacity of 960 Mega Watt (MW). It additionally has a carrying capacity of drinking water supply of 23.44 thousand Million Cubic Feet (TMC) to Vishakhapatnam Steel Plant. Its' interbasin annual water carrying capacity is 80 TMC to Krishna river basin [12].
