Abstract: This study mainly focuses the several factors that control the occurrence and movement of groundwater including topography, geology, drainage patterns, land use/land cover, slope, Rain fall and soil. Using GIS technique, it is possible to integrate number of different thematic maps of the area for the required analysis. The objective of this study is to develop a time and cost effective methodology to investigate ground water recharge potential zones in Gin river basin, Sri Lanka based on integrated remote sensing and GIS techniques. Using weighted overlay method within GIS platform, the resultant thematic layers were prepared and identified ground water recharge potential zones. The integrated map reveals about the groundwater recharge potential zones of the area and classified into three categories which represents low, moderate and high recharge potential. The results depict that the recharging capacity of the area is in considerable level, statistically 10.2% of the area falls under high groundwater recharge potential zone, while 23% falls under law groundwater recharge potential zone. This study can be considered as a pre-feasibility study for any water management program of the Gin river basin conduct by any government or non-government agencies. The GIS model developed in this study can be generalized to the entire basin for generating the maps for most suitable locations for groundwater recharge in any area of consideration within a short time by providing rainfall, geology, soil, land use, stream network, lineaments and contour. Keywords: Groundwater recharge, Gin river basin, GIS model. 1. INTRODUCTION Figure 1 Study Area
Transcript
Abstract: This study mainly focuses the several factors that control the occurrence and movement of groundwater including topography, geology, drainage patterns, land use/land cover, slope, Rain fall and soil. Using GIS technique, it is possible to integrate number of different thematic maps of the area for the required analysis. The objective of this study is to develop a time and cost effective methodology to investigate ground water recharge potential zones in Gin river basin, Sri Lanka based on integrated remote sensing and GIS techniques. Using weighted overlay method within GIS platform, the resultant thematic layers were prepared and identified ground water recharge potential zones. The integrated map reveals about the groundwater recharge potential zones of the area and classified into three categories which represents low, moderate and high recharge potential. The results depict that the recharging capacity of the area is in considerable level, statistically 10.2% of the area falls under high groundwater recharge potential zone, while 23% falls under law groundwater recharge potential zone. This study can be considered as a pre-feasibility study for any water management program of the Gin river basin conduct by any government or non-government agencies. The GIS model developed in this study can be generalized to the entire basin for generating the maps for most suitable locations for groundwater recharge in any area of consideration within a short time by providing rainfall, geology, soil, land use, stream network, lineaments and contour.
Keywords: Groundwater recharge, Gin river basin, GIS model.
1. INTRODUCTION
Figure 1 Study Area
2. METHODOLOGY
2.1. Preparation of data
(
Figure 2 Methodology Flow Chart
Figure 3 DEM and Other Data Sets: (a) Geology, (b) Land Use, (c) Drainage Density and (d) Rainfall
Figure 4 Interrelationships between Influencing Factors
Figure 5 Proposed Distribution for Ground Water Recharge Potential Index (GWRPI)
Figure 6 Distribution of the Groundwater Recharge Potential Index (GWRPI)
3.1. Land use in high groundwater recharge potential zones
4. CONCLUSIONS
Figure 7 Land Use Distributions within High Groundwater Recharge Potential Zones
5. ACKNOWLEDGEMENT
6. REFERENCES
Study ongroundwater recharge potentiality of Barind Tract, Rajshahi District, Bangladesh using GIS and Remote Sensing technique
Identification of Groundwater Potential Zone usingGeoinformatics in Ghataprabha basin, North Karnataka, India
Mapping of groundwater potential zones across Ghana using remotesensing, geographic information systems, and spatial modelling
Evaluation of Water Scarcity in theSelected Area of Hambantota District Using RS and GIS Technology
Introduction to Groundwater Modelling,
Application of remote sensing and GIS for thedemarcation of groundwater potential zones of a river basin in Kerala, southwest coast of India
Delineation of groundwater potentialzones in Theni district, Tamil Nadu
Delineation of groundwater recharge potential zones in NamakkalDistrict, Tamilnadu, India using remote sensing and GIS
Delineate groundwater prospect zones and identification ofartificial recharge sites using geospatial technique International Journal of Advance Technology &Engineering Research
Deciphering of groundwater potential zones in Tuticorin, Tamil Nadu, usingremote sensing and GIS techniques
Use of remote sensing and GIS to determine rechargepotential zones: the case of Occidental Lebanon
Groundwater potential modelling in a soft rock area using GIS
Groundwater assessment through an integrated approachusing remote sensing, using remote sensing, GIS and resistivity techniques: a case study from a hard rock terrain
GIS for the assessment of the groundwaterrecharge potential zone
