Assessing Spatial Variation Of Contaminants
Using Arc GIS: The Case Of Abou Ali River
In North Lebanon
Author(s)
M. A. Massoud, M. El-Fadel, M. D. Scrimshaw & J. N. Lester
Abstract
Several factors affect the concentration of contaminants in river water including,
but not limited, to watershed characteristics, rainfall patterns, catchment
hydrology, geology and soils, in addition to anthropogenic sources such as
agricultural runoff and municipal and industrial discharges. Since surface water
drains to one outlet in a watershed eventually reaching the estuary, upstream
land-based activities affect the water quality at that point. This study assesses the
land use impact on water quality in the Abou Ali River Basin and its coastal zone
in North Lebanon, based on multiple indicators. The assessment was conducted
at the end of the dry season in 2002 and 2003 and the end of the wet season in
2003 and 2004. The objectives of this research are to establish relationships
among changes in contaminant concentrations in water emanating from land use
and probable natural landscape influences. An approach based on the use of
Geographic Information System techniques was used to investigate spatial
variation of contaminant loads to Abou Ali River Basin and its associated coastal
zone. Lower water quality was encountered in areas impacted by human activity,
primarily urban locations. The worst water quality is apparent in the estuary area
where the total pollution of the upstream flow accumulates exacerbated by local
wastewater discharge. This assessment is of major importance towards
developing an integrated multipurpose usage plan for the Abou Ali River as well
as towards an integrated river basin and coastal zone management plan. Such
integrated management plans have the potential to address many of the
shortcomings in water resources management in the catchment and prevent
further deterioration by anticipating and avoiding new impacts.
Keywords: assessment, GIS, water quality, variation, Abou Ali River, Lebanon.
Keywords
assessment, GIS, water quality, variation, Abou Ali River, Lebanon.
Related Book
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