A hydrogeophysical study to estimate water seepage from northwestern Lake Nasser, Egypt

Metwaly, Mohamed; Khalil, Mohamed A.; Al-Sayed, El-Said; Osman, S. Sh.

doi:10.1088/1742-2132/3/1/003

Cited by 24 publications

(12 citation statements)

References 15 publications

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“…Metwaly et al . () studied seepage from Lake Nasser, southern Egypt, into the adjacent Nubian sandstone aquifer and found that this is one of the main factors influencing the water balance of the lake.…”

Section: Introductionmentioning

confidence: 99%

“…Wang et al (2001) also revealed the seepage process in the karst region of northwestern China using a hydrogeochemical analysis technique. Metwaly et al (2006) studied seepage from Lake Nasser, southern Egypt, into the adjacent Nubian sandstone aquifer and found that this is one of the main factors influencing the water balance of the lake.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogeochemical interpretation of water seepage through a geological barrier at a reservoir boundary

Kim¹,

Park²

2013

Hydrological Processes

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A geological barrier such as a mountain ridge surrounding a large reservoir generally plays some part in preventing water leakage from the reservoir, but water flows out naturally according to the hydraulic gradient because the reservoir water level is typically higher than that outside. The hydrogeological, geochemical, and isotopic properties of water in the Daechung Dam area were analysed to characterize the source and the phenomenon of the groundwater flowing through the geological barrier. Our geochemical analysis showed that the concentrations of anions and cations tended to increase, due to the longer residence time of the water, as the distance between the sampling site and reservoir increased. Elevation differences (calculated using oxygen and hydrogen isotopes) between the highest and lowest sampling sites ranged between 350 and 420 m based on the altitude effect on isotope concentration, but the actual difference was only 35 m. These results, including analysis of the rate of water seepage from the reservoir (ca. 2.3% to 14.4% of natural recharge), indicate the possibility that groundwater in the study area originated from reservoir water that was derived from upstream water and rainfall in the high mountainous area of the upper watershed. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrogeochemical interpretation of water seepage through a geological barrier at a reservoir boundary

Kim¹,

Park²

2013

Hydrological Processes

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“…Metwaly et al . () estimated the water seepage from Lake Nasser into the adjacent Nubian sandstone aquifer in the order of 2.6 × 10 6 m 3 year −1 .…”

Section: Introductionmentioning

confidence: 99%

“…They also showed that the water seeping from the banks of the Nile downstream the dam was the result of seepage loss along the banks of the reservoir. Metwaly et al (2006) estimated the water seepage from Lake Nasser into the adjacent Nubian sandstone aquifer in the order of 2.6 Â 10 6 m 3 year À1 .…”

Section: Introductionmentioning

confidence: 99%

Groundwater-surface water interaction in Lake Nasser, Southern Egypt

et al. 2012

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Abstract:A cross-sectional model, based on the two dimensional groundwater flow equation of Edelman, was applied at seven transects distributed over four geological cross sections to estimate groundwater heads and recharge from/or groundwater discharge to Lake Nasser. The lake with a length of 500 km and an average width of 12 km was created over the period [1964][1965][1966][1967][1968][1969][1970], the time for constructing the Aswan High Dam (AHD). The model, constrained by regional-scale groundwater flow and groundwater head data in the vicinity of the lake, was successfully calibrated to timeseries of piezometeric heads collected at the cross sections in the period 1965-2004. Inverse modeling yielded high values for the horizontal hydraulic conductivity in the range of 6.0 to 31.1 m day À1 and storage coefficient between 0.01 and 0.40. The results showed the existence of a strong vertical anisotropy of the aquifer. The calibrated horizontal permeability is systematically higher than the vertical permeability (%1000:1). The calibrated model was used to explore the recharge from/or groundwater discharge to Lake Nasser at the seven transects for a 40-year period, i.e. from 1965 to 2004. The analysis for the last 20-year period, 1985-2004, revealed that recharge from Lake Nasser reduced by 37% compared to the estimates for the first 20-year period, 1965-1984. In the period 1965-2004, seepage of Lake Nasser to the surrounding was estimated at 1.15 Â 10 9 m 3 year À1 . This led to a significant rise of the groundwater table. Variance-based sensitivity and uncertainty analysis on the Edelman results were conducted applying quasi-Monte Carlo sequences (Latin Hypercube sampling). The maximum standard deviation of the total uncertainty on the groundwater table was 0.88 m at Toshka (west of the lake). The distance from the lake, followed by the storage coefficient and hydraulic conductivity, were identified as the most sensitive parameters.

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“…Huntley, 1986;Lesmes and Friedman, 2005;Purvance, 2003). From a different perspective, recent works have shown the high potential of integrating objectively geophysical and hydrological measurements as a useful strategy for an integral and detailed aquifer characterization (Bowling et al, 2006(Bowling et al, , 2007Evett and Parkin, 2005;Guerin, 2005;Jorgensen et al, 2005;Linde et al, 2006;Metwaly et al, 2006;Rubin and Hubbard, 2005;Strahser et al, 2007;Tronicke and Holliger, 2005;Vereecken et al, 2004;Vouillamoz et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Lithological classification assisted by the joint inversion of electrical and seismic data at a control site in northeast Mexico

Infante¹,

Gallardo

Montalvo‐Arrieta³

et al. 2010

Journal of Applied Geophysics

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A hydrogeophysical study to estimate water seepage from northwestern Lake Nasser, Egypt

Cited by 24 publications

References 15 publications

Hydrogeochemical interpretation of water seepage through a geological barrier at a reservoir boundary

Hydrogeochemical interpretation of water seepage through a geological barrier at a reservoir boundary

Groundwater-surface water interaction in Lake Nasser, Southern Egypt

Lithological classification assisted by the joint inversion of electrical and seismic data at a control site in northeast Mexico

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