Delineation of groundwater potential zones in rocky aquifers in the mountainous area of Central Nepal

Groundwater is the lifeline for the people residing in the mountainous regions of Nepal as they are dependent in this natural resource for drinking and other domestic purposes. The springs and seepages are reported to be drying in many places in Nepalese mountains in the recent time. Such problem is expected to be much more severe in view of climate change condition in the future. In this regard, it is important to establish a methodology to explore groundwater in the mountainous terrain for better planning. In order to delineate groundwater potential zones of rocky aquifers in the mountainous terrain, study has been carried out in Melamchi watershed, lying in the Sindhupalchowk district, Nepal. Various thematic layers have been prepared in GIS and the satellite imageries have been used to extract relevant information. Ranks and weights have been assigned to each thematic layer and its classes, respectively. The rasterized layers have been combined and classifi ed and the resulting map is crossed with the existing springs. It is found that the moderate and high potential classes of the groundwater potential map are represented by the existing springs. This method is expected to be useful at the preliminary watershed level study of groundwater potential in the mountainous terrain of central Nepal.

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Geospatial delineation and mapping of groundwater potential in Embu County, Kenya

Acque Sotterranee-Italian Journal of Groundwater ◽

10.7343/as-2019-369 ◽

2019 ◽

Vol 8 (2) ◽

Cited By ~ 1

Author(s):

Mary Christine Chepchumba ◽

James M. Raude ◽

Joseph K. Sang

Keyword(s):

Groundwater Resources ◽

Principal Component ◽

Groundwater Potential ◽

Geographical Information ◽

Landsat 8 ◽

Potential Zone ◽

Groundwater Potential Zones ◽

Study Approach ◽

Rs And Gis ◽

Groundwater Potential Map

Integration of Remote Sensing (RS) and the Geographical Information System (GIS) approaches in the field of groundwater resources management is a breakthrough. The RS and GIS geospatial approaches can enhance the assessment, monitoring, and conservation of groundwater resources. In this study, RS and GIS geospatial techniques were applied with the aim of identifying groundwater potential zones in Embu County, Kenya, based on selected multi influencing factors. Lineament layer was obtained by processing Landsat 8 ETM+ image using Principal Component Analysis in ENVI®4.7 and automatic extraction from Principal Component Image using the LINE module in Geomatica software. The resultant groundwater potential map showed that approximately 78% of the total area ranged from ‘high’ to ‘very high’ zones indicating that almost half of the study area has good groundwater potential. About 20% showed moderate potential while only 2% fell under the low potential zone. The proposed study approach can be used as a new way of modeling geospatial data for identification and mapping of groundwater potential zones. The study findings are useful to first-hand information planners and local authorities for assessment, planning, management and administration of groundwater resources in Embu County.

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Estimation of Dar-Zarrouk parameters and delineation of groundwater potential zones in Karlahi, part of Adamawa Massif, Northeastern Nigeria

Warta Geologi ◽

10.7186/wg472202101 ◽

2021 ◽

Vol 47 (2) ◽

pp. 103-112

Author(s):

S.N. Yusuf ◽

◽

J.M. Ishaku ◽

W.M. Wakili ◽

◽

...

Keyword(s):

Groundwater Potential ◽

Groundwater Potential Zones ◽

North Central ◽

Longitudinal Conductance ◽

The North ◽

Transverse Resistance ◽

Potential Map ◽

Groundwater Potential Map ◽

Potential Groundwater ◽

Dar Zarrouk Parameters

Karlahi is largely underlain by granites and migmatites gneiss of the Adamawa Massif. The area lies west of Benue Trough and east of Cameroon volcanic line. The aim of this paper is to determine hydraulic properties of water bearing layer using parameters derived from Dar-Zarrouk equation and characterized them into groundwater potential zones. The resistivity values of the weathered and slightly weathered layers which make up the water bearing layers were added and an average was taken and used as the resistivity of the water bearing formation in computation of Dar-Zarrouk parameters in Karlahi area. The values of resistivity of water bearing formation ranged from 18 to 4963 Ωm with an average resistivity value of 549 Ωm and the thickness of the water bearing formation ranges from 21 to 32 m with an average thickness of 24.5 m. Conductivity values range from 0.000201 to 0.05509 (σ) while the longitudinal conductance range from 0.00483 to 1.2363 Ω-1, the transverse resistance ranges from 407 to 123504.3 Ωm2. The hydraulic conductivity and transmissivity values range from 0.14 to 25.87 m/day and 3.28 to 580.4 m2/day respectively. The longitudinal conductance values in Karlahi area revealed poor to good with an average longitudinal conductance value that is moderate. High transverse resistance values are located in the central and southern part of Karlahi area while low values are located in the eastern part. The spatial distribution map of transmissivity in the area revealed moderate to high transmissivity values in the north central part and a negligible to low transmissivity in southern part, extreme northeastern part. The groundwater potential map of Karlahi area shows negligible to weak potential groundwater zones in SW and SE, moderate potential in the central to northern part of Karlahi area.

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Assessment of groundwater potentiality using geospatial techniques in Purba Bardhaman district, West Bengal

Applied Water Science ◽

10.1007/s13201-020-01302-3 ◽

2020 ◽

Vol 10 (10) ◽

Author(s):

Subodh Chandra Pal ◽

Chiranjit Ghosh ◽

Indrajit Chowdhuri

Keyword(s):

Groundwater Potential ◽

Human Society ◽

Groundwater Potential Zones ◽

Groundwater Availability ◽

Tube Wells ◽

Potential Map ◽

Groundwater Potential Map ◽

Groundwater Potentiality ◽

Gis Software ◽

Very High

Abstract The word water is life, so life on this planet cannot be possible without water. Water is an essential natural resource that is a surface and groundwater device for human society. The purpose of this research is to assess the groundwater potentiality of the Purba Bardhaman district. All data (primary and secondary) are collected from different sources and analyzed in geographic information system (GIS) software to prepare thematic maps. Different geo-environmental factors like as land use and land cover, soil, lithology, rainfall and distance from the river, etc., can impact on groundwater availability directly or indirectly in Purba Bardhaman area. To identify groundwater potential zones, all these factors are composed into GIS software using multi-criteria decision analysis (MCDA) method. The groundwater potential map has been divided into five classes based on their magnitude as very high, high, medium, low and very low groundwater potential zones. It shows that the areas of very low, low, medium, high and very high groundwater potential zones are 21.54%, 35.80%, 26.47%, 10.13%, 6.06%, respectively, of the total area. Finally, validation is carried out using groundwater depth data collected from 44 drilled tube wells which are located in a scattered manner for whole Purba Bardhaman district which indicates a higher similarity with an area under curve value of 86.8%.

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Geospatial Analysis of Groundwater Potential Zones in Keffi, Nassarawa State, Nigeria

Journal of Geography Environment and Earth Science International ◽

10.9734/jgeesi/2019/v23i130161 ◽

2019 ◽

pp. 1-16

Author(s):

D. R. Abdullahi ◽

O. O. Oladosu ◽

S. A. Samson ◽

L. O. Abegunde ◽

T. A. Balogun ◽

...

Keyword(s):

Spatial Data ◽

Control Point ◽

Drainage Density ◽

Groundwater Potential ◽

Ground Control ◽

Control Points ◽

Groundwater Potential Zones ◽

Ground Control Points ◽

Potential Map ◽

Groundwater Potential Map

Aim: Employ the use of Remote Sensing and Geographic Information System (GIS) to analyze areas of groundwater potentials in Keffi LGA to meet the rate of water demand. Study Design: The study is designed to delineate and analyze the drainage characteristics, and map out the groundwater potential zones. Place and Duration of Study: The study is conducted in Keffi LGA of Nassarawa State, Nigeria in 2018. Methodology: Both spatial and non-spatial data were utilized for this research, including Ground Control Points, satellite imageries, and maps. The data generated consisting of the rainfall, NDVI, lineament, geology, slope, and relief were prepared into thematic layers and used for the generation of the drainage morphometric parameters and multi-criteria overlay analysis. Each of the layer used has inputs were ranked based on their relative importance in controlling groundwater potential, and divided into classes using the hydro-geological properties. The groundwater potential analysis reveals four distinct zones representing high, moderate, less and least groundwater potential zones. The delineated groundwater potential map was verified using the available Ground Control Point of boreholes across the study area. Results: The drainage of the study area falls in the 4th order, with the drainage density ranging from 0.2 to 1.6. From the groundwater potential map generated using the rainfall, lineament, geology, drainage density, slope, soil, and NDVI attributes, areas categorized having the moderate groundwater potentials cover about 89.1 km2, while the least cover 0.1 km2 of the study area. Validating the result with borehole locations across the location shows that the boreholes are dug based on the availability of water following the groundwater potentials, and; 59.8% of the settlement area falls within the moderate groundwater potential classes. Conclusion: The area has adequate capacity for water supply, and only those within the high groundwater potential classes can access groundwater throughout the year.

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Modeling of Groundwater Potential Using Vertical Electrical Sounding (VES) and Multi-caterial Analysis at Omitogun Housing Estate, Akure, Southwestern Nigeria

Asian Journal of Advanced Research and Reports ◽

10.9734/ajarr/2018/v1i213043 ◽

2018 ◽

pp. 1-11

Author(s):

Adebo A. Babatunde ◽

Ilugbo Stephen Olubusola ◽

Oladetan Folorunso Emmanuel

Keyword(s):

Structural Features ◽

Groundwater Potential ◽

Vertical Electrical Sounding ◽

Groundwater Prospect ◽

Groundwater Potential Zones ◽

Southwestern Nigeria ◽

Entire Study ◽

Potential Map ◽

Electrical Sounding ◽

Groundwater Potential Map

A geoelectric investigation of groundwater prospect at Omitogun Estate, along Benin/Ilesha express way Akure, within the basement complex of southwestern Nigeria was carried out with a view to providing information on the geoelectric characteristic of the subsurface sequence, bedrock topography, subsurface structural features and their hydrogeologic significance, in order to identify aquifer units and determine possible areas for groundwater potential zones. The study involved the use of Schlumberger vertical electrical sounding data at thirty (30) stations. The vertical electrical sounding data presented as field curves were interpreted quantitatively by partial curve matching method and computer iteration technique. Fracture resistivity map, aquifer resistivity map, aquifer thickness map and overburden thickness map were generated from the results. Groundwater potential map was also generated from the integration of these maps using multi-criteria decision analysis (MCDA). The study area has been classified into low, medium, high groundwater potential zones and the results from well data across the entire study area were used to validate the accuracy of the groundwater potential map. From the results obtained, it could be concluded that the study area is generalized to be of low groundwater potential.

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USING THE GEOGRAPHICAL INFORMATION SYSTEM (GIS) AND REMOTE SENSING TECHNIQUES FOR MAPPING THE GROUNDWATER POTENTIAL ZONES IN KG TIMBANG DAYANG, KOTA BELUD, SABAH

Water Conservation and Management ◽

10.26480/wcm.01.2020.57.60 ◽

2020 ◽

Vol 4 (1) ◽

pp. 57-60

Author(s):

Zulherry Isnain ◽

Siti Nadia Abd Ghaffar

Keyword(s):

Remote Sensing ◽

Information System ◽

Geographical Information System ◽

Groundwater Potential ◽

Geographical Information ◽

Groundwater Potential Zones ◽

Thematic Maps ◽

Potential Map ◽

Groundwater Potential Map ◽

Remote Sensing Techniques

The growing demand for groundwater is due to several reasons such as the increment of population, agriculture, pollution, industrialization and urbanization. This study aims to map the groundwater potential zones by using the Geographical Information System (GIS) with remote sensing techniques in the study area. The study area is located at Kg Timbang Dayang and its surrounding at Kota Belud, Sabah. Eight parameters were studied that affect the occurrence of groundwater in the study area. Those parameters are obtained from existing maps, remote sensing imagery and associated databases. The parameters are; lithology, rainfall distribution, drainage density, lineament density, soil types, elevation, slope steepness and landuse. All these parameters will be used to create the thematic maps based on the given weightage values. Finally, all the thematic maps will be integrated to produce the final groundwater potential map of the study area. The groundwater potential map is classified into three categories which are low, moderate and high.

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Integrated Geomorphological, Geospatial and AHP Technique for Groundwater Prospects Mapping in Basaltic Terrain

10.21523/gcj3.18020102 ◽

2018 ◽

Vol 2 (1) ◽

pp. 16-27 ◽

Cited By ~ 11

Author(s):

Vaishnavi Mundalik ◽

Clinton Fernandes ◽

Ajaykumar Kadam ◽

Bhavana Umrikar

Keyword(s):

Groundwater Resources ◽

Drainage Density ◽

Groundwater Potential ◽

The Sustainable Development ◽

Thematic Layers ◽

Groundwater Availability ◽

Basaltic Terrain ◽

Thematic Layer ◽

Increasing Demand ◽

Gis Environment

Groundwater is an important source of drinking water in rural parts of India. Because of the increasing demand for water, it is essential to identify new sources for the sustainable development of this resource. The potential mapping and exploration of groundwater resources have become a breakthrough in the field of hydrogeological research. In the present paper, a groundwater prospects map is delineated for the assessment of groundwater availability in Kar basin on basaltic terrain, using remote sensing and Geographic Information System (GIS) techniques. Various thematic layers such as geology, slope, soil, geomorphology, drainage density and rainfall are prepared using satellite data, topographic maps and field data. The ranks and weights were assigned to each thematic layer and various categories of those thematic layers using AHP technique respectively. Further, a weighted overlay analysis was performed by reclassifying them in the GIS environment to prepare the groundwater potential map of the study area. The results show that groundwater prospects map classified into three classes low, moderate and high having area 17.12%, 38.26%, 44.62%, respectively. The overlay map with the groundwater potential zones in the study area has been found to be helpful for better planning and managing the resources.

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