Delineation of groundwater potential zones using remotely sensed data and GIS-based analytical hierarchy process: Insights from the Geba river basin in Tigray, Northern Ethiopia
Study region: The study was undertaken in the Geba Drainage Basin, major tributary of the Tekeze Drainage Basin in Northern Ethiopia. Study focus: The objective of this study is to identify the groundwater potential zones of Northern Ethiopia's Geba Drainage Basin. Nine groundwater indicators w...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-04-01
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| Series: | Journal of Hydrology: Regional Studies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581823000423 |
| _version_ | 1797867620053024768 |
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| author | Gebremedhin Godif B.R. Manjunatha |
| author_facet | Gebremedhin Godif B.R. Manjunatha |
| author_sort | Gebremedhin Godif |
| collection | DOAJ |
| description | Study region: The study was undertaken in the Geba Drainage Basin, major tributary of the Tekeze Drainage Basin in Northern Ethiopia. Study focus: The objective of this study is to identify the groundwater potential zones of Northern Ethiopia's Geba Drainage Basin. Nine groundwater indicators were used as inputs, including lithology, geomorphology, lineament density, drainage density, slope, elevation, land use and land cover, rainfall, and soil. According to their relative influence on groundwater potentiality, the thematic layers and their classes were assigned appropriate weights based on Saaty's 1–9 judgment scale. The assigned weights were then normalized using an Eigen vector-based Analytical Hierarchy process. By superimposing all the normalized layers in the GIS environment, a groundwater potential map was developed. New hydrological insights for the region: Five distinct groundwater potential zones—very good, good, moderate, poor, and very poor were found in the study area. The areal distribution showed that majority of the area (45%) fell within the poor groundwater potential zone. The groundwater potential zones of moderate, very poor, good, and very good cover approximately 27%, 12%, 10%, and 6% of the total area, respectively. The results were compared to the groundwater yield of boreholes collected from the study area. The validation analysis revealed a 72% similarity, which is representative. The employed method is therefore a reasonable option for groundwater development in the Geba Drainage Basin. |
| first_indexed | 2024-04-09T23:44:07Z |
| format | Article |
| id | doaj.art-c26d0f09292b415db980acc602509073 |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-04-09T23:44:07Z |
| publishDate | 2023-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-c26d0f09292b415db980acc6025090732023-03-18T04:41:19ZengElsevierJournal of Hydrology: Regional Studies2214-58182023-04-0146101355Delineation of groundwater potential zones using remotely sensed data and GIS-based analytical hierarchy process: Insights from the Geba river basin in Tigray, Northern EthiopiaGebremedhin Godif0B.R. Manjunatha1Department of Physics, Raya University, Tigray, Ethiopia; Department of Marine Geology, Mangalore University, Mangalagangothri 574199, Karnataka, India; Corresponding author at: Department of Physics, Raya University, Tigray, Ethiopia.Department of Marine Geology, Mangalore University, Mangalagangothri 574199, Karnataka, IndiaStudy region: The study was undertaken in the Geba Drainage Basin, major tributary of the Tekeze Drainage Basin in Northern Ethiopia. Study focus: The objective of this study is to identify the groundwater potential zones of Northern Ethiopia's Geba Drainage Basin. Nine groundwater indicators were used as inputs, including lithology, geomorphology, lineament density, drainage density, slope, elevation, land use and land cover, rainfall, and soil. According to their relative influence on groundwater potentiality, the thematic layers and their classes were assigned appropriate weights based on Saaty's 1–9 judgment scale. The assigned weights were then normalized using an Eigen vector-based Analytical Hierarchy process. By superimposing all the normalized layers in the GIS environment, a groundwater potential map was developed. New hydrological insights for the region: Five distinct groundwater potential zones—very good, good, moderate, poor, and very poor were found in the study area. The areal distribution showed that majority of the area (45%) fell within the poor groundwater potential zone. The groundwater potential zones of moderate, very poor, good, and very good cover approximately 27%, 12%, 10%, and 6% of the total area, respectively. The results were compared to the groundwater yield of boreholes collected from the study area. The validation analysis revealed a 72% similarity, which is representative. The employed method is therefore a reasonable option for groundwater development in the Geba Drainage Basin.http://www.sciencedirect.com/science/article/pii/S2214581823000423Remote sensingGISAnalytical Hierarchy ProcessGeba river basinTigray |
| spellingShingle | Gebremedhin Godif B.R. Manjunatha Delineation of groundwater potential zones using remotely sensed data and GIS-based analytical hierarchy process: Insights from the Geba river basin in Tigray, Northern Ethiopia Journal of Hydrology: Regional Studies Remote sensing GIS Analytical Hierarchy Process Geba river basin Tigray |
| title | Delineation of groundwater potential zones using remotely sensed data and GIS-based analytical hierarchy process: Insights from the Geba river basin in Tigray, Northern Ethiopia |
| title_full | Delineation of groundwater potential zones using remotely sensed data and GIS-based analytical hierarchy process: Insights from the Geba river basin in Tigray, Northern Ethiopia |
| title_fullStr | Delineation of groundwater potential zones using remotely sensed data and GIS-based analytical hierarchy process: Insights from the Geba river basin in Tigray, Northern Ethiopia |
| title_full_unstemmed | Delineation of groundwater potential zones using remotely sensed data and GIS-based analytical hierarchy process: Insights from the Geba river basin in Tigray, Northern Ethiopia |
| title_short | Delineation of groundwater potential zones using remotely sensed data and GIS-based analytical hierarchy process: Insights from the Geba river basin in Tigray, Northern Ethiopia |
| title_sort | delineation of groundwater potential zones using remotely sensed data and gis based analytical hierarchy process insights from the geba river basin in tigray northern ethiopia |
| topic | Remote sensing GIS Analytical Hierarchy Process Geba river basin Tigray |
| url | http://www.sciencedirect.com/science/article/pii/S2214581823000423 |
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