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Hydraulic Modeling and Remote Sensing Monitoring of Floodhazard in Arid Environments—A Case Study of Laayoune City in Saquia El Hamra Watershed Southern Morocco

Nafia, El Alaouy ; Sebbar, Badreddine ; Bouras, El Houssaine LU orcid ; Moumni, Aicha ; Laftouhi, Nour Eddine and Lahrouni, Abderrahman (2022) In Water (Switzerland) 14(21).
Abstract

Morocco often faces significant intense rainfall periods that can generate flash floods and raging torrents, causing serious damage in a very short period of time. This study aims to monitor wetland areas after a flash-flood event in an arid region, Saquia El hamra Saharan of Morocco, using a technique that combines hydraulic modeling and remote sensing technology, namely satellite images. The hydrological parameters of the watershed were determined by the WMS software. Flood flow was modeled and simulated using HEC HMS and HEC-RAS software. To map the flooded areas, two satellite images (Sentinel-2 optical images) taken before and after the event were used. Three classifications were carried out using two powerful classifiers: support... (More)

Morocco often faces significant intense rainfall periods that can generate flash floods and raging torrents, causing serious damage in a very short period of time. This study aims to monitor wetland areas after a flash-flood event in an arid region, Saquia El hamra Saharan of Morocco, using a technique that combines hydraulic modeling and remote sensing technology, namely satellite images. The hydrological parameters of the watershed were determined by the WMS software. Flood flow was modeled and simulated using HEC HMS and HEC-RAS software. To map the flooded areas, two satellite images (Sentinel-2 optical images) taken before and after the event were used. Three classifications were carried out using two powerful classifiers: support vector machines and decision tree. The first classifier was applied on both dates’ images, and the resulting maps were used as input for a constructed decision tree model as a post-classification change detection process.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
flash flood, hydraulic modeling, remote sensing, Saquia El Hamra, semi-arid, Southern Morocco
in
Water (Switzerland)
volume
14
issue
21
article number
3582
publisher
MDPI AG
external identifiers
  • scopus:85141842321
ISSN
2073-4441
DOI
10.3390/w14213582
language
English
LU publication?
yes
id
c6e40074-8c09-44f3-9e6c-62b056fcac90
date added to LUP
2023-01-03 14:56:15
date last changed
2023-01-03 14:56:15
@article{c6e40074-8c09-44f3-9e6c-62b056fcac90,
  abstract     = {{<p>Morocco often faces significant intense rainfall periods that can generate flash floods and raging torrents, causing serious damage in a very short period of time. This study aims to monitor wetland areas after a flash-flood event in an arid region, Saquia El hamra Saharan of Morocco, using a technique that combines hydraulic modeling and remote sensing technology, namely satellite images. The hydrological parameters of the watershed were determined by the WMS software. Flood flow was modeled and simulated using HEC HMS and HEC-RAS software. To map the flooded areas, two satellite images (Sentinel-2 optical images) taken before and after the event were used. Three classifications were carried out using two powerful classifiers: support vector machines and decision tree. The first classifier was applied on both dates’ images, and the resulting maps were used as input for a constructed decision tree model as a post-classification change detection process.</p>}},
  author       = {{Nafia, El Alaouy and Sebbar, Badreddine and Bouras, El Houssaine and Moumni, Aicha and Laftouhi, Nour Eddine and Lahrouni, Abderrahman}},
  issn         = {{2073-4441}},
  keywords     = {{flash flood; hydraulic modeling; remote sensing; Saquia El Hamra; semi-arid; Southern Morocco}},
  language     = {{eng}},
  number       = {{21}},
  publisher    = {{MDPI AG}},
  series       = {{Water (Switzerland)}},
  title        = {{Hydraulic Modeling and Remote Sensing Monitoring of Floodhazard in Arid Environments—A Case Study of Laayoune City in Saquia El Hamra Watershed Southern Morocco}},
  url          = {{http://dx.doi.org/10.3390/w14213582}},
  doi          = {{10.3390/w14213582}},
  volume       = {{14}},
  year         = {{2022}},
}