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Alarming Realities of Groundwater Dynamics in Basaltic Region through RS, GIS-Based Retrieval of Historical Data

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Title Alarming Realities of Groundwater Dynamics in Basaltic Region through RS, GIS-Based Retrieval of Historical Data
Not Available
 
Creator Snehalata Chaware, Nitin Patil and Adwait Patil
 
Subject cluster analysis, decision support systems
 
Description Not Available
A concept of retrieving and monitoring groundwater dynamics
was introduced via metrics derived using Remote Sensing (RS) and
Geographic Information Systems (GIS) in the basaltic region,
namely the Euclidian distance between neighbouring irrigation
wells, area irrigated per well, well density and cluster analysis. In
a representative Nagjhari watershed (14823 ha) located in
Maharashtra state, India, temporal Google Earth images were
interpreted visually to retrieve the periodic (2007, 2013, 2017),
historical dugout well related data. During the decade, the
number of wells increased by 429 (64%) with a 7% decrease in
irrigated area, implying a greater number of competing users,
tapping the same aquifer leading to the increased cost of irrigation.
In 2007, functional wells (368) outnumbered defunct wells (303).
By 2017, the reversal was far greater with 698 defunct wells
compared to 399 functional wells. Clusters of 5-10, 10-15, and >15
number of wells respectively with 500 m proximity showed a
common trend of a rising number of defunct wells (303 to 698), a
decline in the total irrigated area in the watershed (from 517 to
479 ha), and irrigated area per unit well (from 1.41 to 1.23 ha)
accompanied by a decrease in inter-well distance from 250 to 110
m. The well density increased from 0.035 to 0.25 units per ha.
Neural clustering proved effective in discovering and delineating
an aquifer located between 310-330 m contour classes. Three ‘hot
spots’ of high well density, lower inter-well distance, and irrigated
area per well were mapped. Observation wells monitored by the
Central Ground Water Board were located within 460 m from the
functional wells raising concerns about their representative
character. An alarming trend of the rising number of competing
groundwater users, increasing demand but actual use limited by
aquifer yield potential was noted with negative influence on well
density, and investment of about INR 34.55 million wasted over a
decade.
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Date 2024-07-01T11:08:16Z
2024-07-01T11:08:16Z
2021-11-01
 
Type Research Paper
 
Identifier Snehalata Chaware, Nitin Patil and Adwait Patil
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/83833
 
Language English
 
Relation Not Available;
 
Publisher Not Available