December 2016 Current Affairs

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Water table rises in Ganga basin but so does salinity : Study

Water table rises in Ganga basin but so does salinity : Study
02 September 2016 Current Affairs: A group of researchers have concluded that the gravest threat to groundwater in India is not over-exploitation but arsenic and salt contamination.

The study titled Groundwater quality and depletion in the Indo-Gangetic Basin mapped from in situ observations was published on 29 August 2016 in the journal Nature Geoscience.

The study was concluded after analysing groundwater levels from 3429 wells and spatial data in India, Pakistan, Nepal and Bangladesh.

The study also highlights the fact that unsustainable levels of groundwater extraction are largely limited to urban agglomerations in Punjab, Haryana and Uttar Pradesh.

Highlights of the study :  About 23% of the 300 Billion Cubic Metre (BCM) is extremely saline about 40% is contaminated by arsenic. Compiled water-table records indicate substantial spatial variability.

Canals built in the 19 and 20 centuries significantly influenced groundwater trends. Water accumulated at the origins of the canal tended to leak out. The leakage led to high recharge and sometimes floods.The largest water depletion occurred in Punjab, Haryana, Uttar Pradesh and Pakistan’s Punjab.


December 2016 Current affairs

November 2016 Current affairs
30 NOV
NEWS
29 NOV
NEWS
28 NOV
NEWS
26 NOV
NEWS
25 NOV
NEWS
24 NOV
NEWS




October 2016 Current affairs
31 OCT
NEWS
27 OCT
NEWS
26 OCT
NEWS
25 OCT
NEWS
24 OCT
NEWS
22 OCT
NEWS

September 2016 Current affairs
30 SEP
NEWS
29 SEP
NEWS
28 SEP
NEWS
27 SEP
NEWS
26 SEP
NEWS
24 SEP
NEWS

August 2016 Current affairs
31 AUG
NEWS
30 AUG
NEWS
29 AUG
NEWS
27 AUG
NEWS
26 AUG
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25 AUG
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