The role of numerical model in assessing the waterway restoration for watershed management, the case of BAHR YOUSSEF, Egypt

Diwedar, Alsayed. I.; Saad, Samy Abdel Fattah; Nada, Ahmed; Ibraheem, Ahmed M.

doi:10.1016/j.asej.2022.101888

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…VE were 0.93 and 0.98 in Minia and 0.97 in Nubariya validation sites. The results showed that the maximum discharge in Bahr Youssef was approximately 15.5 million cubic meters per day (Figure 10), as mentioned by [68]. In addition, the results for the validation site in Nubariya showed a very good agreement between the simulated and observed results.…”

Section: Models Calibration and Validationsupporting

confidence: 55%

“…Therefore, it reduced the water's cross-section. Consequently, this decreased carrying capacity for the discharge of the required water demand [68]. On the other hand, model results in Nubariya showed the shortage in the Ayser al-Banger canal, as its area is not served by modern irrigation, as is the case for the entire study area (based on unpublished data obtained from the director of the Al-Nasr General Directorate of Water Resources and Irrigation).…”

Section: Models Calibration and Validationmentioning

confidence: 96%

“…Rehabilitation is a stream management strategy that has been used all throughout the world, including Egypt [68]. The process of transferring and distributing water across open canal networks is the main cause of irrigation water loss.…”

Section: Canals Lining Scenarios Justification (Ii)mentioning

confidence: 99%

“…Rehabilitation is the process by which a waterway's structural integrity can be restored to a good working or previously degraded condition, as shown in Figure 9 [68,76,77]. According to [68,70,78,79], we can gain a reduction in seepage by about 60-80% by using concrete linings, but possible cracks or ill-constructed joints can cause seepage losses. In the current study areas, concrete lining has already been used.…”

Section: Canals Lining Scenarios Justification (Ii)mentioning

confidence: 99%

See 3 more Smart Citations

Mitigating Water Shortage via Hydrological Modeling in Old and New Cultivated Lands West of the Nile in Egypt

Badr

Abdelradi

Negm

et al. 2023

Water

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Middle East and North Africa (MENA) regions are increasingly concerned about water scarcity. Egypt, one of the arid MENA nations that relies primarily on Nile water, faces a water scarcity issue because of a mismatch between demand and supply. This study presents an integrated executive system for managing water resources in two regions of Egypt that have traits with many MENA regions facing water scarcities. Hydrological modeling is required for the modeling of water resources, and model calibration procedures should be implemented to compare the simulated values to the observed and measured values to minimize model errors. The Water Evaluation and Planning (WEAP) model was used in this study to simulate the network systems of Egypt’s Minia Governorate on the western bank of the Nile’s narrow valley and Nubariya in the West Nile Delta, the lower reaches of the Nile. Using field data and experience, as well as other inputs, geographic information system (GIS) software digitized streams using satellite-interpreted data. The models were run, calibrated, and validated. The main calibration objective was to reduce the discrepancy between the actual and modeled flows as much as possible. Nash–Sutcliffe efficiency (NSE), percentage BIAS (PBIAS), volumetric efficiency (VE), and agreement index (d) values were calculated for three calibration cases. For anticipating water shortages until 2050, two scenarios were examined: (1) climate change scenarios based on historical climatic data from 1960 to 1990 and from 1991 to 2020, which led to a prediction scenario (2021–2050) of increasing temperature in the areas leading to evapotranspiration (ET) increases of 5.42% and 5.13% and (2) canal lining scenarios, which found a flow saving in the areas, showing that we can overcome the anticipated water shortage progress if canal lengths are rehabilitated by 10% and 25% in Minia and Nubariya.

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Section: Models Calibration and Validationsupporting

confidence: 55%

Section: Models Calibration and Validationmentioning

confidence: 96%

Section: Canals Lining Scenarios Justification (Ii)mentioning

confidence: 99%

Section: Canals Lining Scenarios Justification (Ii)mentioning

confidence: 99%

See 2 more Smart Citations

Mitigating Water Shortage via Hydrological Modeling in Old and New Cultivated Lands West of the Nile in Egypt

Badr

Abdelradi

Negm

et al. 2023

Water

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Assessing the morphological changes on the operation performance of canal: a case study of the Suez Irrigation Canal, Egypt

Zayed,

Abdelmoaty

2023

Water Practice &Amp; Technology

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Morphological changes along the cross-section of canals affect the canal's performance to fulfill the desired operations. The Suez Irrigation Canal is a vital canal that provides the surrounding region with drinking water via about 21 drinking water treatment plants and serves about 140,000 feddan of irrigated land. However, the actual canal capacity is incapacitate to convey sufficient water for drinking and irrigation necessities. This research particularly evaluates the morphological changes in the Suez Canal's performance and increasing its ability to transport the required discharges with adequate operations. For this purpose, extensive field measurements and a numerical model (SOBEK 1D) were adapted to evaluate the canal capacity and operation under the required flow conditions. In total, 890 canal cross-sections were surveyed and 16-flow discharge measurements were considered to identify the actual geometric and hydraulic characteristics. The SOBEK 1D model was used to simulate different scenarios of canal cross-sections under changing flow conditions. The results showed that the actual canal mainly suffered from sedimentations that reduced the canal's capacity to transport the design flow discharges. In summary, rehabilitation of the canal is intensely recommended, in addition to the planned and sufficient clearance activatesof the canal to keep effective operations.

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Application of Physical and Numerical Modeling for Determination of Waterway Safety under the Bridge in Kaunas City, Lithuania

Dysarz

Kałuża

Mickevičius

et al. 2023

Water

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The main problem presented in this paper is the safety inlet navigation of the waterway below the bridge in the city of Kaunas in Lithuania. The analyzed reach is located in the Nemunas river downstream of the Kaunas dam. It is a part of the waterway E–41 leading to the Klaipeda harbor on the southern coast of the Baltic Sea. The work was initiated by the Lithuanian company UAB “Inžinerinis projektavimas” with funds from the project called European Union Trans-European Transport Network (EU TEN-T) . The main requirement imposed along this reach is to keep sufficient depth even in the range of the lowest flows. The depth is sufficient if it is not lower than 1.15 m for minimum flows such as Q95% and Q95% with ice. The hydraulic conditions for maximum flow Q50%, Q5%, and Q1% are also taken into account for control because the threat of hydraulic jump generation was also noticed. The research is based on georeferenced data from public and non-public sources. The hydrologic data were received from the Lithuanian Hydrometeorological Service. The physical model was created in the Water Laboratory of the Department of Hydraulic and Sanitary Engineering at Poznan University of Life Sciences, Poland. The preprocessing of spatial data in ArcGIS 10.8.2 and rules of hydraulic similarity were implemented in the process of physical model preparation. Three experiments were conducted in the laboratory with scaled values of Q95%, Q5%, and Q1%. The measurements of the water surface and evaluations of the average velocity were used to validate the 2D numerical model prepared in HEC-RAS 6.3.1. The basic layers of the HEC-RAS model were preprocessed in ArcGIS 10.8.2 by ESRI company. The numerical model was implemented to test different values of unknown roughness of the channel bottom. The simulations were conducted for the real values of Q95% and Q95% with ice and Q50%. The results of the simulations were depth and Froude number maps. These maps were classified into zones of no risk, middle risk, and high risk. ArcGIS in the post-processing phase was applied to identify the locations of the hazards. The magnitude of risk was expressed in terms of minimum depth achieved, maximum Froude number, as well as the length of the reaches with high risk related to these two factors. The threat of hydraulic jump formation below the bridge was also noticed. Conducted results confirmed that the combination of hydrodynamic simulations and geoprocessing in the pre- and post-processing stages could be a powerful tool in hydraulic engineering analyses. Additionally, it is worth noting that numerical modeling enables a wider analysis of potential conditions than could be possible with a physical model only.

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The role of numerical model in assessing the waterway restoration for watershed management, the case of BAHR YOUSSEF, Egypt

Cited by 3 publications

References 8 publications

Mitigating Water Shortage via Hydrological Modeling in Old and New Cultivated Lands West of the Nile in Egypt

Mitigating Water Shortage via Hydrological Modeling in Old and New Cultivated Lands West of the Nile in Egypt

Assessing the morphological changes on the operation performance of canal: a case study of the Suez Irrigation Canal, Egypt

Application of Physical and Numerical Modeling for Determination of Waterway Safety under the Bridge in Kaunas City, Lithuania

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