Effects of climate change on the design of subsurface drainage systems in coastal aquifers in arid/semi-arid regions: Case study of the Nile delta

Abd‐Elaty, Ismail; Sallam, Gehan A.H.; Straface, Salvatore; Scozzari, Andrea

doi:10.1016/j.scitotenv.2019.03.483

Cited by 43 publications

(13 citation statements)

References 14 publications

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“…Even if groundwater is of a higher salinity than the recharging water, long-term adverse effects may still occur; however, the observable effects may be delayed for quite a few years due to the long travel times of salt in groundwater through unsaturated zones [8]. In any case, the application of subsurface and surface drainage networks safeguard soil and groundwater aquifers from salinization [63]. Overall, the adaptation of smart farming techniques (i.e., precision agriculture) such as Internet of Things (IoT) applications will reduce production costs and improve yields through the efficient use of resources such as water and fertilizers [64,65].…”

Section: Discussionmentioning

confidence: 99%

Irrigation Groundwater Quality Characteristics: A Case Study of Cyprus

Νικολάου

Neocleous

Christophi³

et al. 2020

Atmosphere

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This study was conducted in order to investigate possible quality changes in Cyprus’ groundwater resources over a 10-year period of pumping and to check the suitability of primary irrigation water. Water samples (n = 890) from private wells in agricultural areas were analyzed from 2009 to 2018 to determine various physicochemical properties. The sodium adsorption ratio (SAR) and residual sodium carbonate (RSC) were also calculated to evaluate potential soil degradation issues. Sodium, chloride and sulphate were found to be the predominant ions in groundwater. Quality evaluation showed possible restrictions in groundwater use for irrigation in relation to its salt content and the toxicity of specific ions having adverse effects on sensitive and several moderately sensitive crops. In particular, an increasing trend was observed in pumped groundwater for boron ion concentrations. Nevertheless, all samples evaluated were suitable for irrigation in terms of soil sodicitation and soil infiltration rate. This study indicates that in order to maintain long-term agricultural sustainability it is imperative to develop strategic plants to mitigate the adverse effects of water-pumped quality deterioration on soils and crops. Precision agriculture techniques may be adapted for better water and nutrient input/output management, thus protecting groundwater from salinization in agricultural areas. These results, among others, may be a useful tool to enhance the ability of Cyprus’s agricultural water sector to adapt to observed and anticipated climate impacts.

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Section: Discussionmentioning

confidence: 99%

Irrigation Groundwater Quality Characteristics: A Case Study of Cyprus

Νικολάου

Neocleous

Christophi³

et al. 2020

Atmosphere

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“…The literature contain studies targeting the impact of climate change on drainage practices, with an emphasis on either the increase in annual drained water balance (Pease et al, 2017) or agricultural productivity on drained plots (Jiang et al, 2020b). These topics raise concerns over the sustainability of existing drainage systems, and their need to be redesigned has come to the fore (Deelstra, 2015;Abd-Elaty et al, 2019). A common theme across all these studies is the need to properly represent drainage systems within each study area.…”

Section: Introductionmentioning

confidence: 99%

“…This spatially distributed model operates on various spatial scales (Konyha and Skaggs, 1992;Brown et al, 2013) and integrates many modules in order to represent different hydrological processes and solute transports (Breve et al, 1997). In Europe, the MACRO model (Larsbo et al, 2005;Jarvis and Larsbo, 2012) is currently used by the FOCUS group (Adriaanse et al, 1996;Boesten et al, 1997) to evaluate drainage system performance and contaminant transport (Jarvis et al, 1997;Beulke et al, 2001). These two models, despite demonstrating their effectiveness, have been designed using physically based modeling strategies with a large number of parameters.…”

Section: Introductionmentioning

confidence: 99%

Robustness of a parsimonious subsurface drainage model at the French national scale

Jeantet

Henine

Chaumont

et al. 2021

Hydrol. Earth Syst. Sci.

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Abstract. Drainage systems are currently implemented on agricultural plots subjected to temporary or permanent waterlogging issues. Drained plots account for 9 % of all arable soils in France. As such, the need for accurate hydrological modeling is crucial, especially in an unstable future context affected by climate change. The aim of this paper is to assess the capacity of the SIDRA-RU hydrological drainage model to represent the variability in pedoclimatic conditions within French metropolitan areas and to demonstrate the utility of this model as a long-term management tool. The model is initially calibrated using the KGE′ criterion as an objective function (OF) on a large and unique database encompassing 22 plots spread across France and classified according to three main soil textures (silty, silty–clay, and clayey). The performance of SIDRA-RU is evaluated by monitoring both the set of KGE′ calibration values and the quality of simulations on each plot with respect to high and low discharges, as well as the annual drained water balance. Next, the temporal robustness of the model is assessed by conducting, on selected plots, the split-sample test capable of satisfying the data requirements. Results show that the SIDRA-RU model accurately simulates drainage discharge, especially on silty soils. The performance on clayey soils is slightly weaker than that on silty soils yet remains acceptable. Similarly, the split-sample test indicates that SIDRA-RU is temporally robust on all three soil textures. Consequently, the SIDRA-RU model closely replicates the diversity of French drained soil and could be used for its long-term management potential.

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“…The influence of climate change on the availability and quality of both surface-and ground-water resources is well recognized nowadays [44][45][46][47]. The impact of climate change on the share of the bank filtration technique is calculated using the mean value of conservative species of TDS.…”

Section: Resultsmentioning

confidence: 99%

Numerical Investigation for Riverbank Filtration Sustainability Considering Climatic Changes in Arid and Semi-Arid Regions; Case Study of RBF Site at Embaba, Nile Delta, Egypt

et al. 2021

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Changes in riverine hydrography and reduced aquifer recharge due to projected climate changes in arid and semi-arid regions are the main issues of water supply, especially in the Nile Delta, Egypt. Continuous degradation results from reduced Nile water flow, poor management of groundwater extraction, and human activities throughout the Nile’s course and drainage channels. Contamination of this water with heavy metals and dissolved organic solids reduces the quality of this water, which increases the price of treatment. River Bank Filtration (RBF) is a water treatment technology used for improving the quality of drinking water taken from polluted rivers where abstraction wells are installed on the banks. This study was applied to the RBF site at Embaba, Nile Delta, Egypt using the numerical code MT3D. The study was simulated and calibrated for the current situation and number of scenarios to investigate the effect of climatic changes on RBF sustainability. Four scenarios were simulated to identify and estimate the RBF portion and the total water travel time from the river to the wells. The first scenario involves a reduction in river stages, the second a decrease in aquifer recharge, the third a combination of the first two scenarios, and the fourth scenario combines scenarios 1, 2, and 3. The results indicate that the RBF portion decreased from 67.42% in the base case to 35.46% and 64.99% with a reduction in river stage by 75% from the base case and a decrease in aquifer recharge from 182.50 (base case) to 50 mm per year, respectively. Moreover, the RBF portion increased to reach 87.75% with a reduction in the General Head Boundary of 75% from the base case, while the combination of the three scenarios decreased the RBF portion to 67.24%. Finally, the water supply systems in arid and semi-arid regions should be extended by installing and operating RBF facilities to manage the negative effects of climatic change through reduction in river stages and aquifer recharge, and increasing abstraction due to overpopulation.

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Effects of climate change on the design of subsurface drainage systems in coastal aquifers in arid/semi-arid regions: Case study of the Nile delta

Cited by 43 publications

References 14 publications

Irrigation Groundwater Quality Characteristics: A Case Study of Cyprus

Irrigation Groundwater Quality Characteristics: A Case Study of Cyprus

Robustness of a parsimonious subsurface drainage model at the French national scale

Numerical Investigation for Riverbank Filtration Sustainability Considering Climatic Changes in Arid and Semi-Arid Regions; Case Study of RBF Site at Embaba, Nile Delta, Egypt

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