NEW DELHI: Central Ground Water Board (CGWB) had informed that around 56% of the wells are showing decline in ground water level in various parts of the country as per the data of pre-monsoon 2013, compared with decadal mean of pre-monsoon (2003-2012). However, as per the latest ground water monitoring data of CGWB for pre-monsoon 2014, compared with decadal mean of pre-monsoon (2004-2013), indicates that out of total wells analyzed, around 39% of the wells are showing decline in ground water level in various parts of the Country.
India receives an average rainfall of about 1170mm which corresponds to an annual precipitation of about 4000 BCM(Billion Cubic Metre) including snowfall. However, there is considerable variation in rainfall both temporally and spatially.
Nearly 75% of this i.e., 3000 BCM occurs during the monsoon season confined to 3 to 4 month (June to September) in a year. After accounting for evaporation the average annual water availability in the Country has been assessed as 1869 BCM.
It has been estimated that owing to topographic, hydrological and other constraints, the utilizable water is 1123 BCM which comprises of 690 BCM of surface water 433 BCM of replenishable ground water resources. As per latest assessment made by the CWC in 2010 the live storage capacity of completed projects is 253.388 BCM.
As per assessment conducted by CPCB in 2015, the sewage generation capacity for Urban Population of India for the year is estimated to be 62,000 MLD approximately against sewage treatment capacity of 23,277 MLD with 816 STPs(Sewage Treatment Plants).
The works under ‘National Ganga River Basin Authority’ (NGRBA) Programme include laying of sewerage system, sewage treatment plants, solid waste management, common effluent treatment plant for controlling industrial pollution, river front management, crematoria etc.
This information was given by Union Minister of State for Water Resources, River Development and Ganga Rejuvenation Prof. Sanwar Lal Jat in a written reply in Rajya Sabha .
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