Unleashing the Untapped Potential: Groundwater Exploration in a Watershed Environment of North‐East India Using MCDA‐AHP Techniques

Hydrological Processes, Journal Year: 2025, Volume and Issue: 39(1)

Published: Jan. 1, 2025

ABSTRACT The contemporary era is marked by the faster exploitation of groundwater resources due to combined effects burgeoning population and rapid industrialisation. This study tries delineate potential zones (GWPZs) in a fragile agriculturally dominant watershed North‐East India using GIS‐based multi‐criteria decision analysis (MCDA) approach Analytical Hierarchy Process (AHP) technique. has undertaken 10 influencing factors: geomorphology, geology, land use/land cover (LU/LC), drainage density, rainfall, soil texture, slope, lineament topographic wetness index (TWI) normalised difference water (NDWI). Suitable weights for parameters are assigned according their relative importance association with storage based on pairwise comparison matrix (PCM). Four GWPZs respective coverages namely poor (3.39%), moderate (24.98%), good (33.36%) excellent (38.27%) categories found. central southern parts area covering portion Udalguri, Sonitpur Darrang districts Assam have porous geological settings floodplains, indicating high potentiality. In contrast, northern part hard rugged terrain lacks storage. Incorporating socio‐economic aspect, particularly number villages or without access suitable groundwater, significantly enhances study's utility. outcome cross‐verified well data obtained from Central Groundwater Board (CGWB) field which validated receiver operating characteristics (ROC) curve resulting an accuracy 72.9%. Hence, this inquiry implications both regional global significance will assist stakeholders authorities creating roadmap sustainable effective use.

Language: Английский

Multicriteria Analysis of Groundwater Potential in Valliyur Region, Tamil Nadu: Integrating Remote Sensing, GIS, and Analytical Hierarchy Process

Water Conservation Science and Engineering, Journal Year: 2024, Volume and Issue: 9(2)

Published: Aug. 14, 2024

Language: Английский

A comprehensive study of floodplain analysis utilising HEC-HMS, HEC-RAS, and GIS on the Kosasthalaiyar River sub-basin

Water Practice & Technology, Journal Year: 2024, Volume and Issue: 19(11), P. 4612 - 4628

Published: Oct. 28, 2024

ABSTRACT The present study focused on the Kosasthalaiyar River basin in Chennai, Tamil Nadu, India. We analysed 2015 peak flood and forecasted feature data representative concentration pathways (RCP) 4.5 scenario for various years. used scientific management system (SDSM) software to downscale Geophysical Fluid Dynamics Laboratory (GFDL) 2.0 general circulation models (GCMs). According hydrograph analysis, 142.7, 75.31, 461.73, 248.22 mm runoff can occur 2030, 2050, 2080, 2100, respectively. current estimates probable flows by performing floodplain analysis sub-basin using Hydrologic Engineering Centre's Modelling System (HEC-HMS), Analysis (HEC-RAS), geographic information (GIS) tools. It is possible observe that two major floods, measuring 581.6 110.7 m3/s, respectively, will 28 November 2030 at 10:20 a.m. 12 December 2050 9:20 Additionally, high floods of 997 1,438.4 m3/s be recorded 20 2080 9:50 29 2100 9:40 a.m.,

Language: Английский