An Overview of Groundwater Resources in Nile Delta Aquifer

Negm, Abdelazim; Sakr, Sameh A.; Abd‐Elaty, Ismail; Abd-Elhamid, Hany F.

doi:10.1007/698_2017_193

Cited by 27 publications

(18 citation statements)

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“…In the WD, these could be derived from the recharge of the underlying fractured limestone of the Eocene aquifer and the return flow of surface irrigation water [55,56]. The finding that most of the samples of the groundwater from the CND were the Ca-HCO3 water type indicates freshwater recharge into the aquifers [60], which aligns with water recharge from the Nile Delta basin [58].…”

Section: Assessment Of Groundwater Quality For Irrigation Purposes Bamentioning

confidence: 99%

“…However, the groundwater of the CND, which is from the Central Nile Delta aquifer, is regularly replenished directly by Nile River water through water seepage from the two Nile River branches. Therefore, the groundwater of the Nile Delta aquifer, which provides about 85% of total groundwater abstractions in Egypt (6.1 billion cubic meters per year), is considered another important irrigation water resource after the Nile River [58]. In this study, when the quality of groundwater of both regions was categorized using PS, which is defined as the summation of Cl − and half of the SO 4 2− and is a very important index for determining the suitability of groundwater for irrigation purposes [51], 6.7% and 93.3% of samples from the WD and 84.0% and only 4.0% of samples from the CND were classified as excellent to good and injurious to unsatisfactory class, respectively ( Table 5).…”

Section: Assessment Of Groundwater Quality For Irrigation Purposes Bamentioning

confidence: 99%

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Combining Hydrogeochemical Characterization and a Hyperspectral Reflectance Tool for Assessing Quality and Suitability of Two Groundwater Resources for Irrigation in Egypt

Gad

El-Hendawy

Al-Suhaibani

et al. 2020

Water

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Hyperspectral reflectance sensing provides a rapid and cost-effective technique for assessing the suitability of groundwater for irrigation by monitoring real-time changes in its quality at a large scale. In this study, we assessed the quality of 15 groundwater samples from El Fayoum depression in the Western Desert (WD) and 25 groundwater samples from the Central Nile Delta (CND) in Egypt using a traditional approach of the physiochemical parameters, irrigation water quality indicators (IWQIs), and hydrochemical facies. The spectral reflectance data of the water surface was used to build new simple reflectance indices (SRIs), and the performance of these indices for assessing IWQIs was compared with those by partial least square regression (PLSR) that was based on all SRIs or the full-spectrum ranges. Generally, the groundwater of the CND was fresher and more suitable for irrigation purposes than those of the WD. Based on the six IWQIs, ~6.7–60.0% and 85.0–100.0% of the groundwater samples of the WD and CND, respectively, were categorized as highly suitable for irrigation purposes. Based on hydrochemical facies, Na-Cl and Ca-HCO3 were dominant in the WD and CND, respectively, as well as the alkali earth metals (Na+ + K+), which significantly exceeded the alkaline earth metals (Ca2+ + Mg2+) in the WD, with the reverse for the CND. Most developed SRIs had a moderate, weak, and moderate to strong relationship with physiochemical parameters and IWQIs in the WD, CND, and across both regions, respectively. The PLSR models based on all SRIs provided a more accurate estimation of IWQIs in calibration and validation datasets than those based on full-spectrum ranges, and both PLSR models provided better estimation than the individual SRIs. These findings support the feasibility of using ground reflectance measurements as a fast and low-cost tool for the assessment and management of groundwater for irrigation in arid and semiarid regions.

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Section: Assessment Of Groundwater Quality For Irrigation Purposes Bamentioning

confidence: 99%

Section: Assessment Of Groundwater Quality For Irrigation Purposes Bamentioning

confidence: 99%

Combining Hydrogeochemical Characterization and a Hyperspectral Reflectance Tool for Assessing Quality and Suitability of Two Groundwater Resources for Irrigation in Egypt

Gad

El-Hendawy

Al-Suhaibani

et al. 2020

Water

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“…A positive point to note is that the Egyptian Nile Delta aquifer still represents, up-to-now,one of the largest aquifers worldwide (Sherif etal., 2012). This renewable resource is directly recharged by the Nile water (Negm et al, 2018) and can therefore, be a vital resource in many public activities (El Tahlawi et al, 2008). This aquiferis used for irrigating about 1.26 million ha (Sherif etal., 2012) with an annual recharge of approximately 6.70× 10 6 m 3 /year (Mikhailova, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…The Nile Delta aquifer is in direct contact with the Mediterranean Sea from the north and the Suez Canal from the east (Negm et al, 2018) with a slope of approximately 4 m/km, which is about 40 folds higher than the slope of the land surface (Said, 1993). Farmers, in such an area, depend mainly on natural drainage systems to get rid of excess water (Abd El Ghany et al, 2019) while soil-leachates reach groundwater carrying considerable amounts of agrochemical (Taha et al, 2004 andSherif etal., 2012).…”

Section: Introductionmentioning

confidence: 99%

“…These contaminants do not undergo biodegradation; and; therefore, persist in soils for years (Abdellatif et al, 2020); hence, possess potential long-term health hazards (Abdelhafez et al, 2015;Abbas and Bassouny, 2018;Mohamed et al, 2018 andElShazly et al, 2019 a, b). Several studies have emphasized the presence of groundwater hydraulic continuity within the Nile Delta aquifer (Zeidan, 2017;Negm et al, 2018) and some others demonstrated that many of the soil locations overlying this aquifer are polluted with trace elements (Elewa, 2010). Consequently, an integrated approach, considering both soil contamination with TEs and hydraulic continuity is needed to bring up further details on the conditions of accumulation and redistribution of trace elements in such an area.…”

Section: Introductionmentioning

confidence: 99%

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Monitoring Environmental Pathways of Trace Elements in the Northern East Area of Egypt

Bassouny

Abbas

2020

EBSS

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N ILE Delta aquifer is one of the largest aquifers worldwide that receives the agrochemical leachates from the surrounding environments. To assess the status of some trace-elements (As, Co, Cd, Pb, Cu and Ni) in the NorthEast area of Egypt, well-water samples beside of surface, subsurface and deep-soil-samples were collected from 17 different locations to represent three environmental-pathways: the first one signifies areas relatively nearby Damiettabranch, while the third pathway stands for the arable lands nearby Ismaellia-canal. The second pathway is in-between these two pathways. Furthermore,a reference soil (irrigated with fresh-Nile-water) was sampled for data comparison.These samples were estimated for their total and AB-DTPA-extractable contents of the aforementioned trace elements (TEs). Results revealed that AB-DTPA-extractable-TEs were in dynamic equilibrium with the corresponding soluble contents in irrigation water. Likewise, AB-DTPA-extractable-TEs significantly correlated with their corresponding total contents in soil. Concentrations of TEs in surface-soil-layer were higher than the corresponding ones in the subsurface and deep-soil-layers. The calculated values of contamination factor indicated moderate to very high levels of soil contamination with TEs. According to the principal component analysis, total and AB-DTPA-extractable-TEs in soil were affected by only one-principal-component, recording 86.13 % of the data variance. This indicates that these contaminants originated probably from the same source. Moreover, multivariate-analyses revealed that total TEs significantly and positively correlated with soil hydraulic conductivity and bulk density, while negatively correlated with exchangeable sodium percentage, clay and organic matter contents. These results indicate that the groundwater flow is the potential source that enriched soils with TEs. Accordingly, any reductions in effluents of fresh Nile water, which is in hydraulic continuity with the groundwater in the studied area, can increase the severity of soil pollution with TEs in the studied area.

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Isotopic and Chemical Composition of Egypt’s Groundwater Resources

Ahmed,

Khalil

2023

The Handbook of Environmental Chemistry

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An Overview of Groundwater Resources in Nile Delta Aquifer

Cited by 27 publications

References 10 publications

Combining Hydrogeochemical Characterization and a Hyperspectral Reflectance Tool for Assessing Quality and Suitability of Two Groundwater Resources for Irrigation in Egypt

Combining Hydrogeochemical Characterization and a Hyperspectral Reflectance Tool for Assessing Quality and Suitability of Two Groundwater Resources for Irrigation in Egypt

Monitoring Environmental Pathways of Trace Elements in the Northern East Area of Egypt

Isotopic and Chemical Composition of Egypt’s Groundwater Resources

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