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Evaluation of groundwater quality for irrigation and drinking using GIS and geostatistics in a peri-urban area of Delhi, India

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Title Evaluation of groundwater quality for irrigation and drinking using GIS and geostatistics in a peri-urban area of Delhi, India
Not Available
 
Creator ParthaPratimAdhikary
Ch. Jyotiprava Das
H. Chandrasekharan
T. B. S. Rajput
S. K. Dubey
 
Subject GIS . Groundwater quality .Kriging . Semivariogram .Water quality index
 
Description Not Available
Intensive agriculture by indiscriminate use of
agrochemicals, sewage water, and polluted drain water
has posed a serious threat to groundwater quality in some
peri-urban areas of Delhi like Najafgarh block. The
objective of the study was to determine the groundwater
quality and to map their spatial variation in terms of
suitability for irrigation and drinking purpose. Ordinary
kriging method was used for preparation of thematic
maps of groundwater quality parameters such as electrical
conductivity, sodium adsorption ratio, bicarbonate,
magnesium/calcium ratio, total dissolved solids, chloride,
nitrate and hardness. Exponential semivariogram model
was best fitted for all quality parameters except chloride
and hardness, where spherical model fitted best. Pollution
level was highest at south and south-eastern part of the
study area. Better quality groundwater may be expected
at the northern and western part. High salinity was due to
high chloride concentration in the groundwater. Nitrate
pollution level was found to be very alarming and need
immediate interventions. High dissolved solids and
hardness made the groundwater unsuitable for drinking.
There were negligible sodium and bicarbonate hazard in
the study area. The groundwater quality index was
devised to analyse the combined impact of different
quality parameters on irrigation and drinking purposes.
The irrigation water quality index and drinking water
quality index distribution maps delineated an area of
47.29 and 6.54 km2 suitable for irrigation and drinking,
respectively. These safe zones were found as a small strip
along the northern boundary and a very small pocket at the
western side of the study area.
Not Available
 
Date 2020-03-05T08:39:01Z
2020-03-05T08:39:01Z
2011-03-24
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/33573
 
Language English
 
Relation Not Available;
 
Publisher Not Available