Why in news
The National Council of Educational Research and Training (NCERT) has proposed that findings from the DNA analysis of skeletal remains unearthed at the archaeological site of Rakhigarhi in Haryana be added to the Class 12 history textbook.
It also proposed that references to how the Projects such as the Sardar Sarovar dam on the river Narmada in western India and the Polavaram dam on the river Godavari in Andhra Pradesh displace hundreds of thousands of adivasis and drove them to greater destitution be dropped from the sociology textbook.
Sardar Sarovar dam
SSD is a concrete gravity dam built on the Narmada River in Gujarat's Narmada district in Kevadia.
It is the third-highest concrete dam in India, with a length of 1.2 km and a depth of 163 m, after Bhakra (226 meters) in Himachal Pradesh and Lakhwar (192 meters) in Uttar Pradesh.
This dam will be the second largest in the world in terms of the volume of concrete used in gravity dams, after the Grand Coulee Dam in the United States.
Sardar Sarovar dam
It is part of the Narmada Valley Project, which entails the construction of a succession of huge irrigation and hydroelectric multi-purpose dams on the Narmada River.
The dam features two powerhouses, one at the canal head and one at the river bed, with installed capacities of 250 MW and 1,200 MW, respectively.
Madhya Pradesh, Maharashtra, and Gujarat share power advantages in the following proportions: 57:27:16
Sardar Sarovar Dam was one of the first focal points of the Narmada Bachao Andolan
Polavaram dam
It is an under-construction multi-purpose irrigation project on the Godavari River in the Eluru District and East Godavari District in Andhra Pradesh.
The project has been accorded National project status by the Union Government of India in 2014 (under Section-90 of Andhra Pradesh Reorganization Act, 2014).
Objectives:
Development of Irrigation, Hydropower and drinking water facilities in East Godavari, Vishakhapatnam, West Godavari and Krishna districts of Andhra Pradesh.
Polavaram dam
The project envisages the generation of 960 MW of hydropower, drinking water supply to a population of 28.50 lacks in 611 villages
The ultimate irrigation potential of the project is 4.368 lakh ha.
The project implements the Godavari-Krishna link under the Interlinking of Rivers project.
It envisages the transfer of 80TMC of surplus Godavari water to river Krishna which will be shared between Andhra Pradesh, Karnataka and Maharashtra.
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