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Site Selections for Hill Dams in Oued Cherrat Watershed, NW Morocco: Weighted Overlay Approach

Zerdeb Oumaima, Labriki Allal, Manaouch Mohamed, Chakiri Saïd, Sadiki Mohamed

Geomatics and Environmental Engineering

2025

Vol. 19, no. 2

49--69

The identifications of suitable locations for hill dam construction are confronted with various challenges, including environmental, technical, social, economic, and regulatory factors; these necessitate meticulous planning and management. This study employed geographic information systems (GIS) to identify and forecast potential sites within the Oued Cherrat watershed in northwest Morocco. A suitability map was developed by integrating multiple data sets, such as digital elevation models (DEMs), lithology, drainage density, and lineament density. By utilizing a weighted overlay analysis, the study area was categorized into segments with varying suitability levels for hill dam installation (ranging from unsuitable to very high potential). Covering an area of 39 km², the results indicated that 8% of the total area possessed very high potential. The findings were validated through field surveys that were conducted both prior to and following the study; these confirmed the high-potential areas that were identified by the model, thereby enhancing the reliability of the suitability map for future hill dam planning and flood-risk-mitigation strategies.

Diachronic Study of the North Atlantic Coast of Morocco between Larache and Moulay Bousselham – A Geometric Approach

El Idrissi Soukaina, Zerdeb Oumaima, Labriki Allal, Mehdioui Sakina, El Omari Mariyam, Chakiri Saïd, Inekach Sultana

Ecological Engineering & Environmental Technology

2024

Vol. 25, iss. 6

90--103

Coastal areas, vital for local communities, are subject to significant changes requiring rigorous management. This study focused on assessing the evolution of the Atlantic coastline between Larache and Moulay Bousselham over a period of 60 years, with an emphasis on erosion and accretion risks. The main objective was to understand coastal change trends and identify the most vulnerable areas. Using advanced techniques such as multi-temporal photo interpretation, geographic information system (GIS), and the digital shoreline analysis system (DSAS), the aerial and satellite images from 1963, 1991, 2014, and 2023 were analyzed. The results reveal that zones A (Msitro Beach) and B (Lhayayda Beach) are primarily affected by erosion, with minimal accretion, while zones C (Mersat lghnem beach) and D (Moulay Bousselham Beach) exhibit more intense erosion. This study provides an original contribution by combining advanced analytical methods to inform on the sustainable management of coastal resources.