Application of e-TOPSIS for Ground Water Potentiality Zonation using Morphometric Parameters and Geospatial Technology of Vanvate Lui Basin, Mizoram, NE India

Abstract

Morphometric analysis is the mathematical analysis of a watershed. Groundwater storage is directly related to the morphometry of a watershed. Remote sensing and GIS gives an opportunity for the scientific and empirical investigation towards groundwater potentiality. The utilization of RS/GIS for scientific investigation into ground water potentiality is quite innovative for the hilly state of Mizoram of India, which faces acute water shortage during the winter season. Vanvate Lui basin of Mizoram was thus chosen for the present study. It is an important source of water for a significant number of rural villages like Zote, Chhipphir, and Lungmovi. The present study analyzed the groundwater potentiality of Vanvate lui basin and undertook groundwater potentiality zonation of Vanvate lui basin using eTOPSIS model. eTOPSIS is an intregated knowledge-based multi-criteria decision-making model assimilating TOPSIS objective weighting method and Shannon Entropy. Areal, relief and linear morphometric aspects of Vanvate lui basin were extracted from ALOS PALSAR DEM for conducting MCDM. It was found that sub-basins 1, 6, 8 and 2 have high potentiality for groundwater storage. Similar, studies were also done on the Donor basin adjacent to the study area for model validation. After applying e-TOPSIS in the Donor basin, it was found that the result of the study matches the groundwater data of Donor basin as provided by the PHE department, Mizoram. The zones found to be under high potential of groundwater in the sub-basins 14, 9, 2, 11, 6 and 5 are the ones where the ground water depth is less than 70 meters as measured by the ground water department of Mizoram state. The present study will help the policymakers, village governance system, district development authorities and P.W.D of Mizoram to take proper steps towards developing the rural life quality, identifying suitable groundwater storage and ensuring proper steps towards watershed management. It is hoped that the research work will help in mitigating the water scarcity problem of the study area during the dry winter season.

Regional Differences in the Quality of Rural Development in Guangdong Province and Influencing Factors

“…The TOPSIS method, namely, the "distance method of good and bad solutions", is a comprehensive evaluation method based on an objective perspective and uses distance as the evaluation standard. Since the indicator data were processed positively and standardized, the scores of each dimension were calculated according to the threelevel indicator weights, and then the total scores of the rural development quality of each research unit were obtained according to the subjective weight of the criteria layer [37,38].…”

Detection of groundwater conditioning factors in a hilly environment

“…Rapid urbanization and global climate change make groundwater an exhausted resource. Identification of groundwater in the hilly mountains is very difficult due to its high terrain (Barman and Biswas 2022). The traditional method of groundwater exploration (drilling) is very time-consuming and manpower intensive.…”

“…The northeaster state like Mizoram entirely covered with hilly terrain. Although rainfall is the major source of groundwater, most of the water is drained as spring water through fractures and joints (Barman and Biswas 2022;Barman et al 2023c). It was estimated during the monsoons the rate of discharge varies from 0.002 to 0.168 m 3 /s, while it varies between 0.001 m 3 /s and 0.084 m 3 /s in the non-monsoon periods from the springs (Central Ground Water Board 2021).…”