International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 05 | May 2024
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p-ISSN: 2395-0072
In-Depth Assessment of Impact of Recharge Pits on Groundwater Resource in Nashik District by Software Analysis R. R. Ahire1, N. K. Aher2, K. T. Gaikwad3, S. M. Valvi4, A.V. Dudhekar5 1,2,3,4 Student, Department of Civil Engineering, KK Wagh Institute of Engineering Education and Research, Nashik,
India
5 Prof., Department of Civil Engineering, KK Wagh Institute of Engineering Education and Research, Nashik, India
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Abstract - This research delves into an in-depth analysis of groundwater modeling and recharge pit assessment in Nashik district using MODELMUSE MODFLOW-6 simulations. Data from Survey of India, Open Topography, and India WRIS websites were processed to create Thiessen polygons around 18 observation wells, with two models per polygon developed to study the impact of recharge pits over a year. Various parameters including aquifer characteristics, EVT rates, recharge rates, hydraulic conductivities, sediment thickness, and drain conductance were considered. Different scenarios based on minimum, average, and maximum conditions were explored to evaluate groundwater dynamics. The introduction of recharge pits led to a notable increase in groundwater inflow, with 3248 strategically placed recharge pits influencing observation wells. Additionally, satellite imagery from the Bhuvan portal was utilized to derive a land use map for Nashik district, aiding in well placement in areas of low elevation and barren land. The research findings provide valuable insights for sustainable water resource management in Nashik district. Key Words: Groundwater, GIS, Shapefiles, DEM
1.INTRODUCTION ( Size 11 , cambria font) Nashik District, situated in Maharashtra, India, covers an expanse of 15,525 square kilometers and supports a population exceeding 6 million. Over the past 19 years, the region has witnessed a significant decline in groundwater levels, with 2023 marking a record low of 9.89 meters below ground level. Data from the India Water Resources Information System highlights the pressing need for sustainable groundwater management in Nashik District. In numerous villages, women endure long journeys to fetch water, underscoring the profound impact of dwindling groundwater resources on local communities. Groundwater recharge structures play a vital role in replenishing aquifers and sustaining water resources in regions facing water scarcity. Among these structures, recharge pits stand out as a primary method for augmenting groundwater levels by facilitating the infiltration of surface water into the underlying aquifer. Recharge pits are strategically designed to capture and percolate water efficiently, aiding in maintaining the water table and mitigating the effects of excessive groundwater extraction. Recharge pits are man-made structures strategically located in areas with favorable soil permeability to promote efficient water seepage into the ground. These pits serve as essential components of sustainable water management practices, enabling the gradual infiltration of collected water into the aquifer to replenish the groundwater table. By supporting natural groundwater recharge processes, recharge pits contribute significantly to water conservation efforts, water table stability, and mitigation of drought impacts.
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