Vulnerability and Impact of Climate Change Processes on Water Resource in Semi-Arid Areas: In Essaouira Basin (Morocco)

Ouhamdouch, Salah; Bahir, Mohammed; Souhel, Abdellatif; Paula, Carreira

doi:10.1007/978-3-319-30127-3_53

Cited by 25 publications

(7 citation statements)

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“…In arid and semi-arid areas, principally in coastal areas, an increase in the salinity is being confirmed in most of the major aquifers being used for water supply in coastal regions, which led to the deterioration in water quality [9][10][11][12][13][14]. This deterioration is due to the inflow of saline water because of over-exploitation of groundwater, and/ or mobilization of saline formation waters (combining with ancient seawater trapped in the sediments).…”

Section: Introductionmentioning

confidence: 99%

The use of GIS and water quality index to assess groundwater quality of krimat aquifer (Essaouira; Morocco)

et al. 2020

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The aim of this present study was to evaluate groundwater quality in the upstream part of the Essaouira basin. A detailed geochemical study of groundwater region is described, and the origin of the chemical composition of groundwater has been qualitatively evaluated, using multivariate statistical methods (PCA, HCA), and Water Quality Index (WQI) was used to determine the suitability of water for drinking. To attempt this investigation, 38 samples were analysed for various physicochemical parameters such as temperature, pH, TDS, Na, NO 3 , K, Ca, HCO 3 , Cl, Mg, and SO 4. The results obtained showed that the facies characterizing the study area was a combination of Ca-SO 4 and mixed Ca-Mg-Cl. Hydrochemical approach based on the bivariate diagrams of major ions indicates that the origins of groundwater mineralization are the result of (I) evaporite dissolution; (II) cation-exchange reactions; and (III) evaporation processes. The WQI values range from 82.3 to 390.9, and therefore the water samples can be categorized into five groups: excellent water to water unsuitable for drinking. In global, 61% of the groundwater sampled had poor water quality, 18% were very poor water quality, 16% are unsuitable for drinking, and just 6% represent a good quality. However, the results of this paper indicate that most water is not safe for drinking and needs further treatment.

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Section: Introductionmentioning

confidence: 99%

The use of GIS and water quality index to assess groundwater quality of krimat aquifer (Essaouira; Morocco)

et al. 2020

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“…The groundwater piezometric level evolution is closely related to the variation in precipitation [5,26], the degree of exploitation and the contributions of surface water.…”

Section: Piezometrymentioning

confidence: 99%

Global warming and groundwater from semi-arid areas: Essaouira region (Morocco) as an example

et al. 2020

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Climate change is undoubtedly becoming a subject of great concern for public authorities in all regions of the globe, in particular, the regions under Saharan, arid, and semi-arid climate. In this regard, this study aims to assess the effect of climate change on groundwater from semi-arid environments, taking the Essaouira basin as an example. The climate approach shows a downward trend in precipitation from 12 to 16% and an increase in temperature from 1.2 to 2.3 °C, and this during the last three decades. A continuous decline in the piezometric level exceeding 12 m for the Cenomanian-Turonian aquifer and 17 m for the Plio-Quaternary aquifer has been observed. The groundwater mineralization is controlled by the dissolution of evaporate and carbonate minerals, by the bases exchange phenomenon, and by the marine intrusion, especially in Plio-Quaternary aquifer. Also, the groundwater quality in the study area deteriorates gradually over time and space. However, the results of this study confirm that the groundwater from Essaouira basin is vulnerable to the global warming.

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“…The evolution of the groundwater piezometric surface is closely related to the variation of precipitation (Bahir et al 2016;Ouhamdouch et al 2016), the degree of exploitation and the contributions of surface water.…”

Section: Piezometrymentioning

confidence: 99%

Quantitative and Qualitative Assessment of Groundwater from Semi-Arid Zones in the Context of Climate Change, Example of Essaouira Region, Morocco

Bahir¹,

Ouhamdouch²,

Ouazar³

et al. 2020

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This study aims to assess the effect of climate change on water resources in semi-arid environments, taking the Essaouira region as an example. Analysis of climate data shows a downward trend in precipitation of 12 to 16% and an increase in air temperature of 2.3 °C over the past three decades. The piezometric study shows a continuous drop in the piezometric level which exceeds 12 m for the Cenomanian-Turonian aquifer, 17 m for the Plio-Quaternary aquifer, around 8 m for the Barremian-Aptian aquifer and 5 m for the Hauterivian. Hydrogeochemical analysis shows that (i) the groundwater mineralization is controlled by the dissolution of evaporitic and carbonates minerals, by the reverse ions exchange phenomenon, and by the marine intrusion, especially at Plio-Quaternary aquifer; (ii) the groundwater quality in the study area deteriorates gradually over time and space. The isotopic technique shows that (i) the groundwater recharge in the study area is ensured by precipitation of oceanic origin without significant evaporation and that (ii) climate change has no remarkable effect on the isotopic content of the groundwater of the study area. However, the results of this article reflect that the Essaouira basin is very vulnerable to climate change.

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Vulnerability and Impact of Climate Change Processes on Water Resource in Semi-Arid Areas: In Essaouira Basin (Morocco)

Cited by 25 publications

References 4 publications

The use of GIS and water quality index to assess groundwater quality of krimat aquifer (Essaouira; Morocco)

The use of GIS and water quality index to assess groundwater quality of krimat aquifer (Essaouira; Morocco)

Global warming and groundwater from semi-arid areas: Essaouira region (Morocco) as an example

Quantitative and Qualitative Assessment of Groundwater from Semi-Arid Zones in the Context of Climate Change, Example of Essaouira Region, Morocco

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