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DOI	10.1002/hyp.14466
	Modelling the impact of lining and covering irrigation canals on underlying groundwater stores in the Nile Delta, Egypt
	Abd-Elaty, Ismail; Pugliese, Lorenzo; Bali, Khaled M.; Grismer, Mark E.; Eltarabily, Mohamed Galal
通讯作者	Eltarabily, MG
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2022
卷号	36 期号:1
英文摘要	Canal seepage losses can contribute significantly to groundwater aquifers in arid and semi-arid regions worldwide. In addition, surface water evaporation and evapotranspiration from adjacent riparian vegetation directly affect surface water availability across these regions. This study aims to evaluate interactions between irrigation canals and the Nile Delta groundwater aquifer in Egypt under four operational scenarios: (i) decreased stream flows in the four main diversion canals associated with upper Nile diversions and climate change, (ii) concrete lining of irrigation canals, (iii) combined lining and use of Photo-Voltaic (PV) Solar Panel covers on canals and (iv) enclosure of the canals in closed conduits. We investigated the effects of these scenarios on regional groundwater supplies and levels using MODFLOW and water budget analyses. Decreased streamflow (scenario 1) resulted in decreased aquifer recharge (from 732 910 to 483 800 m(3) day(-1)) and lower groundwater levels as compared to the base case (present) conditions. Moreover, groundwater flows from the aquifer to the four main canals noticeably increased from 23 176 to 79 364 m(3) day(-1). Water budget analyses associated with canal lining scenarios (2, 3, & 4) indicated that canal leakage to the aquifer accounted for 146 582, 146 582, and 73 291 m(3) day(-1) respectively. The changes in canal efficiencies reached 29.3%, 67.1%, 75.3%, and 91.8% while the changes in aquifer recharge efficiencies were 66%, 20%, 20%, and 10% for the four scenarios, respectively. Overall, we found that canals lining is likely the most suitable solution for managing water resources in the Nile Delta. Further aspects to be considered in future studies include the loss of biodiversity along streams embankments due to channel lining.
英文关键词	evaporation hydrograph seepage losses solar canal PV stream-aquifer interactions
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001003897600001
WOS关键词	SURFACE-WATER ; DISCHARGE SCENARIOS ; SEAWATER INTRUSION ; QUATERNARY AQUIFER ; DIFFERENT RECHARGE ; VALLEY ; EVAPORATION ; GOVERNORATE ; MANAGEMENT ; RESOURCES
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393042
推荐引用方式 GB/T 7714	Abd-Elaty, Ismail,Pugliese, Lorenzo,Bali, Khaled M.,et al. Modelling the impact of lining and covering irrigation canals on underlying groundwater stores in the Nile Delta, Egypt[J],2022,36(1).
APA	Abd-Elaty, Ismail,Pugliese, Lorenzo,Bali, Khaled M.,Grismer, Mark E.,&Eltarabily, Mohamed Galal.(2022).Modelling the impact of lining and covering irrigation canals on underlying groundwater stores in the Nile Delta, Egypt.HYDROLOGICAL PROCESSES,36(1).
MLA	Abd-Elaty, Ismail,et al."Modelling the impact of lining and covering irrigation canals on underlying groundwater stores in the Nile Delta, Egypt".HYDROLOGICAL PROCESSES 36.1(2022).