Optimizing The Operation Of A Multiple Reservoir System In The Eastern Nile Basin Considering Water And Sediment Fluxes
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Optimizing The Operation Of A Multiple Reservoir System In The Eastern Nile Basin Considering Water And Sediment Fluxes
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Author : Reem Fikri Mohamed Osman Digna
language : en
Publisher: CRC Press
Release Date : 2021-02-25
Optimizing The Operation Of A Multiple Reservoir System In The Eastern Nile Basin Considering Water And Sediment Fluxes written by Reem Fikri Mohamed Osman Digna and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-02-25 with Science categories.
The Eastern Nile riparian countries Egypt, Ethiopia and Sudan are currently developing several reservoir projects to contribute to the needs for energy and food production in the region. The Nile Basin, particularly the Eastern Nile Sub-basin, is considered one of a few international river systems with potential conflicts between riparian countries. In the absence of formal mechanisms for collaboration, the transboundary nature of this basin makes sound water resources development challenging. The large seasonal and inter-annual variability of the river flow exacerbates those challenges. A further complication is the high sediment load in the Eastern Nile rivers during the high flow season. This study contributes to fill relevant knowledge gaps through a better understanding of the methods needed for a complex system of multipurpose reservoirs, considering both water quantity and sediment load. The study quantifies the impacts of water resources development in the Eastern Nile basin and identifies system management options at both regional and country level. Developing a collaborative and unified perspective of the countries towards new projects can be beneficial for all. New operation rules are proposed for improving operation of the current system when new infrastructures are developed and operated either unilaterally or, ideally, cooperatively.
The Operation Of Multiple Reservoir Systems
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Author : Zdzisław Kaczmarek
language : en
Publisher:
Release Date : 1982
The Operation Of Multiple Reservoir Systems written by Zdzisław Kaczmarek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Reservoirs categories.
Optimal Operation Of A Multiple Purpose Reservoir
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Author : Bolaji Fatai Sule
language : en
Publisher:
Release Date : 1984
Optimal Operation Of A Multiple Purpose Reservoir written by Bolaji Fatai Sule and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Reservoirs categories.
Decision Support Systems For Large Dam Planning And Operation In Africa
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Author : Matthew P. McCartney
language : en
Publisher: IWMI
Release Date : 2007-01-01
Decision Support Systems For Large Dam Planning And Operation In Africa written by Matthew P. McCartney and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-01-01 with Dams categories.
Supported by many International agencies.
The Nile Basin Water Resources Overview Of Key Research Questions Pertinent To The Nile Basin Initiative
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Author : Yasir Mohamed
language : en
Publisher: IWMI
Release Date : 2008-06-24
The Nile Basin Water Resources Overview Of Key Research Questions Pertinent To The Nile Basin Initiative written by Yasir Mohamed and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-06-24 with Nile River Watershed categories.
The Nile Basin Initiative (NBI) is a remarkable achievement towards the cooperative management of the common Nile water resources. Based on a Shared Vision Program and a Subsidiary Action Program, the NBI has numerous ongoing projects on the ground. Research on the Nile water resources has been recognized to be crucial for successful implementation of the NBI projects. Therefore, IWMI and other research centers have worked together with the NBI to identify knowledge gaps pertinent to the Nile water resources. This report presents prioritized research questions, pertinent ongoing research projects and the implementing institutions; and available databases on the Nile.
A Review Of Hydrology Sediment And Water Resource Use In The Blue Nile Basin
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Author : Seleshi Bekele Awulachew
language : en
Publisher: IWMI
Release Date : 2009-02-05
A Review Of Hydrology Sediment And Water Resource Use In The Blue Nile Basin written by Seleshi Bekele Awulachew and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-02-05 with Blue Nile River Watershed (Ethiopia and Sudan) categories.
This working paper has been prepared as one of the outputs of the ‘Improved water and land management in the Ethiopian Highlands and its impact on downstream stakeholders dependent on the Blue Nile’ project, supported by the CGIAR Challenge Program on Water and Food (CPWF). It provides a comprehensive literature review; identifies types, sources and provides geo-referencing of data in the basin; compiles information of hydrology, sediment, and water resources and its uses. It also provides a review of applicable models for watershed and water allocation simulation, research methods, past studies and published material related to the Blue Nile. Extensive reference material and previous studies are compiled.
Water Scarcity And Regional Security In The Nile Basin
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Author : Rami Okascha
language : en
Publisher: GRIN Verlag
Release Date : 2013-09-18
Water Scarcity And Regional Security In The Nile Basin written by Rami Okascha and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-18 with Political Science categories.
Bachelor Thesis from the year 2012 in the subject Politics - Region: Near East, Near Orient, grade: 14,5 p., University of Marburg, language: English, abstract: Since South Sudan's secession in 2011 the Nile River is shared by eleven countries (Egypt, Sudan, South Sudan, Ethiopia, Eritrea, Tanzania, Uganda, Burundi, Rwanda, D.R. Congo, and Kenya) and is home to more than 160 million people. Five of these countries are among the poorest in the world, with low levels of socio-economic development or - in other words - with tremendously high potentials and motivation to socio-economically develop. Today, exploitation of the Nile has reached its limits with ever greater populations and industries depending on its waters. History has created political power structures which represent the exact opposite of the hydrological realites. Although the river receives no contributions from Egyptian territories, the country is the most excessive consumer of Nile waters and dependent on it for about 95% of its freshwater resources. At the same time, precipitation in the Ethiopian highlands delivers some 85% of the Nile's flow measured at Aswan. But the prevailing river regime in combination with a history of political instability has so far prevented Ethiopia and other upstream countries from constructing major schemes to facilitate economic development or even flood protection for its population. Will increasing resource competition lead the states of the Nile Basin to full-scale inter-riparian conflict? Egypt with its very limited availabilty of arable land and already over-exploited and contested water resources must consider to at least partially abandon its pursuit of food self-sufficiency and examine alternative ways of securing its population's needs. Given growing pressures on the Nile's resources, the Basin states' current order will have to fundamentally shift from the current lower-basin domination to a more integrative regional system that appreciates both the upperriparians' contributions and development needs as well as the lower-riparians' dependence upon their cooperation. Considering the most recent trends in scientific literature on transboundary water resources, this transformation is expected to be accomplished through cooperative action rather than resisted against through inter-riparian conflict. This paper argues that Egypt will, despite the repeated threats uttered against underdeveloped upstream states' claims for more equal shares, lose its hitherto dominant position and engage in cooperative efforts exceeding current frameworks like that of the World Bank's NBI.
Impact Of Improved Operation And Maintenance On Cohesive Sediment Transport In Gezira Scheme Sudan
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Author : ISHRAGA S. OSMAN
language : en
Publisher: CRC Press
Release Date : 2018-09-27
Impact Of Improved Operation And Maintenance On Cohesive Sediment Transport In Gezira Scheme Sudan written by ISHRAGA S. OSMAN and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-27 with categories.
Irrigated agriculture remains to be the main option to boost the economy in Sudan in general. It can rise the living standard of the majority of the population; particularly those who are attached to farming and livestock. With the expected increase in population in the next decades, water management of large irrigation systems will become a key issue to increase productivity and assure future food security. Sediment transport in irrigation canals makes water management very complicated. This study focuses on water management in Gezira Scheme, Sudan. This scheme is irrigated from the Blue Nile River, which is characterized by a high sediment concentration. The aim of the study was to reduce the impact of fine sediment deposition in irrigation canals by improving the operation and maintenance procedures. A numerical model has been developed to simulate the cohesive sediment transport in irrigation canals. This model is a useful tool for the operators and decision makers to assess different options of operation in terms of sediment transport. This study found that sediment deposition in the canals can be minimized if the operation based on crop water requirement is adjusted at a certain period during the flood season.
The Nile River Basin
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Author : Seleshi Bekele Awulachew
language : en
Publisher: Routledge
Release Date : 2013-03-05
The Nile River Basin written by Seleshi Bekele Awulachew and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-05 with Science categories.
The Nile provides freshwater not only for domestic and industrial use, but also for irrigated agriculture, hydropower dams and the vast fisheries resource of the lakes of Central Africa. The Nile River Basin covers the whole Nile Basin and is based on the results of three major research projects supported by the Challenge Program on Water and Food (CPWF). It provides unique and up-to-date insights on agriculture, water resources, governance, poverty, productivity, upstream-downstream linkages, innovations, future plans and their implications. Specifically, the book elaborates the history and the major current and future challenges and opportunities of the Nile river basin. It analyzes the basin characteristics using statistical data and modern tools such as remote sensing and geographic information systems. Population distribution, poverty and vulnerability linked to production system and water access are assessed at the international basin scale, and the hydrology of the region is also analysed. This text provides in-depth scientific model adaptation results for hydrology, sediments, benefit sharing, and payment for environmental services based on detailed scientific and experimental work of the Blue Nile Basin. Production systems as they relate to crops, livestock, fisheries and wetlands are analyzed for the whole Blue and White Nile basin including their constraints. Policy, institutional and technological interventions that increase productivity of agriculture and use of water are also assessed. Water demand modeling, scenario analysis, and tradeoffs that inform future plans and opportunities are included to provide a unique, comprehensive coverage of the subject.
Improving Multi Reservoir Water Supply System Operation Using Ensemble Forecasting And Global Sensitivity Analysis
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Author : Reza Limon
language : en
Publisher:
Release Date : 2019
Improving Multi Reservoir Water Supply System Operation Using Ensemble Forecasting And Global Sensitivity Analysis written by Reza Limon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Global analysis (Mathematics) categories.
The objective of this research is to improve the cost-effectiveness, reliability and resilience of water supply system operation through the utilization of ensemble forecasting and optimization of the operating policies. For the effective operation of a multi-reservoir water supply system skillful inflow and outflow forecasts are required. To that end, this research first assesses the value of medium-range ensemble precipitation forecasts generated with the HEFS developed by the US NWS in increasing skill and lead time of ensemble inflow forecasts. The skill of reservoir outflow forecasts is then assessed using three different models with varying complexity. Also assessed in the above is the relative importance of meteorological, hydrologic and reservoir modeling uncertainty in outflow forecasts. Lastly, the proposed policy modifications were optimized via global sensitivity analysis using the variance-based Sobol method to improve cost-effectiveness of the system operation further. The analysis results identify influential policies, assess their impact on the cost response of the system operation, and determine policy modifications. Main conclusions of this research follow below. Compared to using only the 72-hr RFC QPF, the use of the medium-range precipitation forecasts from GEFS increases skill and lead time of mean daily inflow forecasts from HEFS by up to 3 days for significant events. The HEFS-produced multi-daily inflow forecasts are significantly more skillful than the daily inflow forecasts, and extends the lead time of skillful forecasting further. It is demonstrated that the use of the HEFS-produced ensemble inflow forecasts results in significant savings in mean annual pumping cost, compared to the TRWD's current practice of inflow forecasting. Among the three reservoir models considered in this work, RiverWare provides the largest skill in MEFP-GEFS-forced outflow forecasts. It is shown that meteorological, hydrologic and reservoir modeling uncertainties are comparably importance in improving skill of reservoir outflow forecasts. However, the decomposition of total predictive uncertainty into the above three indicates that the relative importance varies significantly with lead time and among different reservoir models. Evaluation of reservoir outflow forecasts for specific large outflow events shows that, although the reservoir outflow forecasts forced by the HEFS inflow forecasts are not probabilistically unbiased for very large to extreme events, the ensemble spread of the outflow forecasts is generally able to encompass the observed pool elevation and outflow. As such, the HEFS inflow forecasts provide additional critical information not available from single-valued forecasts for risk-based decision making in reservoir operations.Among the five operating policies selected for considered for modification, only one or two exert large influence on the cost for a given year. The influential polices, however, vary very significantly from year to year. The cost response of the system to policy modifications is complex and shows large interannual variations. Hydroclimatic conditions, storage states, inflow, and demand largely determine the influential policies and their modifications. It is shown that annually-varying, or dynamic, determination of policy modifications offer significantly larger potential for cost savings than using optimized, but fixed, policy modifications.