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Groundwater modeling for assessing the recharge potential and water table behaviour under varying levels of pumping and recharge

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Title Groundwater modeling for assessing the recharge potential and water table behaviour under varying levels of pumping and recharge
Not Available
 
Creator S S Mali
D K Singh
 
Subject Artificial recharge
Groundwater modelling
MODFLOW
 
Description Not Available
Increased abstraction to meet the food demands of the burgeoning population
has raised the concerns for groundwater sustainability in several parts of India. In
order to develop an optimum management plan for such areas, impact of various
management alternatives on water tables needs to be assessed. This study
investigates the impact of different rates of groundwater withdrawal and artificial
recharge on water tables in IARI farmlocated in alluvial tracts of Northern India.
A three dimensional finite difference model MODFLOW was used to simulate
the aquifer system of the study area. The model was calibrated and validated
using observed data for the period 2007 to 2010. The results of calibration and
validation showed agreement between observed and predicted water table
elevation. The coefficient of determination (R ) ranged between 0.80 to 0.91 for
calibration and 0.81 to 0.94 for validation. The validated model was used to
simulate the water table behaviour for the period of 2012 to 2018 under eight
management scenarios. The modeling results showed that the prevailing pumping
rate, groundwater level would go down at an average rate of 0.64 m yr . If the
pumping increases by 20%, the water table will decline at 0.91 m yr . Recharging
60% of available surface runoff would reduce the rate of groundwater decline to
0.25 m yr highlighting the fact that extensive recharging of groundwater is still
not sufficient to check the declining water levels and there is need for demand
management. The simulation results also showed that at prevailing pumping and
recharge levels, the sustainability of groundwater resources cannot be ensured
unlesswater availability at the IARI farms is increased.
Not Available
 
Date 2021-08-16T07:17:56Z
2021-08-16T07:17:56Z
2016-06-01
 
Type Research Paper
 
Identifier Mali, S. S., Singh, D. K., (2016). Groundwater modeling for assessing the recharge potential and water table behaviour under varying levels of pumping and recharge. Indian Journal of Soil Conservation, 201(44) 93-102.
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/57215
 
Language English
 
Relation Not Available;
 
Publisher IASWC