Identification of suitable sites for groundwater recharge in Awaspi watershed using GIS and remote sensing techniques
Autor: | Arsalan Ahmed Othman, Sarkawt Ghazi Salar, Syed E. Hasan |
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Rok vydání: | 2018 |
Předmět: |
Global and Planetary Change
Watershed 010504 meteorology & atmospheric sciences 0208 environmental biotechnology Soil Science Geology 02 engineering and technology Groundwater recharge Geologic map 01 natural sciences Pollution 020801 environmental engineering Thematic map Environmental Chemistry Environmental science Digital elevation model Surface water Groundwater Drainage density 0105 earth and related environmental sciences Earth-Surface Processes Water Science and Technology Remote sensing |
Zdroj: | Environmental Earth Sciences. 77 |
ISSN: | 1866-6299 1866-6280 |
Popis: | Groundwater is a valuable natural resource for drinking, domestic, livestock use, and irrigation, especially in arid and semi-arid regions like the Garmiyan belt in Kurdistan region. The Awaspi watershed is located 50 km east of Kirkuk city, south Kurdistan, Iraq; and covers an area of 2146 km2. The paper presents result of a study aimed at: (1) mapping and preparing thematic layers of factors that control groundwater recharge areas, and (2) determination of sites suitable for groundwater recharge. We used available data such as geological map, groundwater depth map, digital elevation model (DEM), Landsat 8 imagery, and tropical rainfall measuring mission (TRMM) data for this study. These data, supplemented by slope features, lithology, land use land cover, rainfall, groundwater depth, drainage density, landform, lineament density, elevation and topographic position index, were utilized to create thematic maps to identify suitable areas of groundwater recharge, using GIS and remote sensing techniques. Analytic hierarchy process (AHP) was applied to weight, rank, and reclassify these maps in the ArcGIS 10.3 environment, to determine the suitable sites for groundwater recharge within the Awaspi watershed. Fifty-five percent of the total area of the watershed was found to be suitable for groundwater recharge; whereas 45% of the area was determined to have poor suitability for groundwater recharge, but can be used for surface water harvesting. |
Databáze: | OpenAIRE |
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