Hydrological problems of flash floods and the encroachment of wastewater affecting the urban areas in Greater Cairo, Egypt, using remote sensing and GIS techniques
Abstract Background This paper discusses the hydrological problems assessment of flash floods and the encroachment of wastewater in selected urban areas of Greater Cairo using remote sensing and geographic information system (GIS) techniques. The integration of hydrogeological and geomorphological a...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-11-01
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| Series: | Bulletin of the National Research Centre |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s42269-020-00442-5 |
| _version_ | 1819173680870064128 |
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| author | Hanaa A. Megahed Mohammed A. El Bastawesy |
| author_facet | Hanaa A. Megahed Mohammed A. El Bastawesy |
| author_sort | Hanaa A. Megahed |
| collection | DOAJ |
| description | Abstract Background This paper discusses the hydrological problems assessment of flash floods and the encroachment of wastewater in selected urban areas of Greater Cairo using remote sensing and geographic information system (GIS) techniques. The integration of hydrogeological and geomorphological analyses with the fieldwork of drainage basins (Wadi Degla) hosting these urban areas endeavors to provide the optimum mitigation measures that can be feasibly taken to achieve sustainability of the urban areas and water resources available. Results Landsat 5 and Sentinel-2 satellite images were obtained shortly before and after flash flood events and were downloaded and analyzed to define the active channels, urban interference, storage areas, and the natural depressions response. The quantitative flash flood estimates include total GSMap meteorological data sets, parameters of rainfall depths from remote sensing data, active channel area from satellite images, and storage areas that flooded. In GIS, digital elevation model was used to estimate the hydrographic parameters: flow direction within the catchment, flow accumulation, time zone of the catchment, and estimating of the water volume in the largely inundated depressions. Conclusions Based on the results obtained from the study of available satellite images, it has been shown that there are two significant hydrological problems, including the lack of flash flood mitigation measures for urban areas, as the wastewater depressions and sanitary facilities are dotting in the downstream areas. |
| first_indexed | 2024-12-22T20:26:56Z |
| format | Article |
| id | doaj.art-77dc6fdf32fa4bacb0aace5b1d846cfe |
| institution | Directory Open Access Journal |
| issn | 2522-8307 |
| language | English |
| last_indexed | 2024-12-22T20:26:56Z |
| publishDate | 2020-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Bulletin of the National Research Centre |
| spelling | doaj.art-77dc6fdf32fa4bacb0aace5b1d846cfe2022-12-21T18:13:43ZengSpringerOpenBulletin of the National Research Centre2522-83072020-11-0144111410.1186/s42269-020-00442-5Hydrological problems of flash floods and the encroachment of wastewater affecting the urban areas in Greater Cairo, Egypt, using remote sensing and GIS techniquesHanaa A. Megahed0Mohammed A. El Bastawesy1Geology Department, National Authority for Remote Sensing and Space Sciences (NARSS)Geology Department, National Authority for Remote Sensing and Space Sciences (NARSS)Abstract Background This paper discusses the hydrological problems assessment of flash floods and the encroachment of wastewater in selected urban areas of Greater Cairo using remote sensing and geographic information system (GIS) techniques. The integration of hydrogeological and geomorphological analyses with the fieldwork of drainage basins (Wadi Degla) hosting these urban areas endeavors to provide the optimum mitigation measures that can be feasibly taken to achieve sustainability of the urban areas and water resources available. Results Landsat 5 and Sentinel-2 satellite images were obtained shortly before and after flash flood events and were downloaded and analyzed to define the active channels, urban interference, storage areas, and the natural depressions response. The quantitative flash flood estimates include total GSMap meteorological data sets, parameters of rainfall depths from remote sensing data, active channel area from satellite images, and storage areas that flooded. In GIS, digital elevation model was used to estimate the hydrographic parameters: flow direction within the catchment, flow accumulation, time zone of the catchment, and estimating of the water volume in the largely inundated depressions. Conclusions Based on the results obtained from the study of available satellite images, it has been shown that there are two significant hydrological problems, including the lack of flash flood mitigation measures for urban areas, as the wastewater depressions and sanitary facilities are dotting in the downstream areas.http://link.springer.com/article/10.1186/s42269-020-00442-5Flash floodsWastewaterRemote sensingGISUrban areasEgypt |
| spellingShingle | Hanaa A. Megahed Mohammed A. El Bastawesy Hydrological problems of flash floods and the encroachment of wastewater affecting the urban areas in Greater Cairo, Egypt, using remote sensing and GIS techniques Bulletin of the National Research Centre Flash floods Wastewater Remote sensing GIS Urban areas Egypt |
| title | Hydrological problems of flash floods and the encroachment of wastewater affecting the urban areas in Greater Cairo, Egypt, using remote sensing and GIS techniques |
| title_full | Hydrological problems of flash floods and the encroachment of wastewater affecting the urban areas in Greater Cairo, Egypt, using remote sensing and GIS techniques |
| title_fullStr | Hydrological problems of flash floods and the encroachment of wastewater affecting the urban areas in Greater Cairo, Egypt, using remote sensing and GIS techniques |
| title_full_unstemmed | Hydrological problems of flash floods and the encroachment of wastewater affecting the urban areas in Greater Cairo, Egypt, using remote sensing and GIS techniques |
| title_short | Hydrological problems of flash floods and the encroachment of wastewater affecting the urban areas in Greater Cairo, Egypt, using remote sensing and GIS techniques |
| title_sort | hydrological problems of flash floods and the encroachment of wastewater affecting the urban areas in greater cairo egypt using remote sensing and gis techniques |
| topic | Flash floods Wastewater Remote sensing GIS Urban areas Egypt |
| url | http://link.springer.com/article/10.1186/s42269-020-00442-5 |
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