Authors :
Badrinarayanan T.S; S. Sundaramoorthy; Dr. N. Jawahar Raj
Volume/Issue :
Volume 7 - 2022, Issue 9 - September
Google Scholar :
https://bit.ly/3IIfn9N
Scribd :
https://bit.ly/3Csh9fq
DOI :
https://doi.org/10.5281/zenodo.7133874
Abstract :
To exploit the groundwater resources for
water supply projects in any area needs proper
systematic groundwater exploration techniques. This
study pertains to providing water supply to an
aquaculture project for which systematic groundwater
investigations have been taken up in a coastal plain of
Nellore district. The research area falls in
Venkannapalem of Thottapalli mandal in Nellore district
of Seemandra state, India. It is a coastal sedimentary
area, about 2 to 3 kms from sea coast. Geological,
hydrogeological, geoelectrical investigations and
pumping test have been conducted to prospect the
groundwater resources. Among the surface geophysical
methods, electrical resistivity technique [ERT] is widely
used, which is non- invasive and cost effective. 1D VES
was carried out to explore the potential phreatic
aquifers. A pilot borehole was drilled and electrically
logged to delineate the granular and fresh water zones. A
tube well has been constructed to a depth of 51m,
developed and completed. The yield was reported as 4’’
[276 lpm]. A constant discharge pumping test was done
to evaluate the aquifer parameters, transmissivity [T],
Storativity [S], hydraulic conductivity [K] by both
Jacob’s straight line graphical method and by software
program . The values computed by both methods are
nearly the same. The T, & K values are 97/90 & 6.4/6.01
respectively. The specific capacity of the aquifer is 683
lpm/ 1.3m dd/ 8 hrs of pumping. Thus the systematic
groundwater investigations in coastal plains proved to be
successful and fruitful.
Keywords :
Phreatic aquifers;1D VES;Electrical well logging; Aquifer parameters.
To exploit the groundwater resources for
water supply projects in any area needs proper
systematic groundwater exploration techniques. This
study pertains to providing water supply to an
aquaculture project for which systematic groundwater
investigations have been taken up in a coastal plain of
Nellore district. The research area falls in
Venkannapalem of Thottapalli mandal in Nellore district
of Seemandra state, India. It is a coastal sedimentary
area, about 2 to 3 kms from sea coast. Geological,
hydrogeological, geoelectrical investigations and
pumping test have been conducted to prospect the
groundwater resources. Among the surface geophysical
methods, electrical resistivity technique [ERT] is widely
used, which is non- invasive and cost effective. 1D VES
was carried out to explore the potential phreatic
aquifers. A pilot borehole was drilled and electrically
logged to delineate the granular and fresh water zones. A
tube well has been constructed to a depth of 51m,
developed and completed. The yield was reported as 4’’
[276 lpm]. A constant discharge pumping test was done
to evaluate the aquifer parameters, transmissivity [T],
Storativity [S], hydraulic conductivity [K] by both
Jacob’s straight line graphical method and by software
program . The values computed by both methods are
nearly the same. The T, & K values are 97/90 & 6.4/6.01
respectively. The specific capacity of the aquifer is 683
lpm/ 1.3m dd/ 8 hrs of pumping. Thus the systematic
groundwater investigations in coastal plains proved to be
successful and fruitful.
Keywords :
Phreatic aquifers;1D VES;Electrical well logging; Aquifer parameters.
