Downstream Consequences Of Ribb River Damming Lake Tana Basin Ethiopia
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Downstream Consequences Of Ribb River Damming Lake Tana Basin Ethiopia
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Author : Chalachew Abebe Mulatu
language : en
Publisher: CRC Press
Release Date : 2022-02-09
Downstream Consequences Of Ribb River Damming Lake Tana Basin Ethiopia written by Chalachew Abebe Mulatu and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-02-09 with Science categories.
This study assessed the downstream river system adaptation in response to upstream damming on the Ribb River, Ethiopia, to irrigate 15,000 ha. It combined primary and secondary data, and the application of remote sensing and mathematical modeling. The pre-dam morphodynamic trends of the Ribb River were analyzed for 59 years based on aerial photographs, satellite images, and newly collected field data. Three dam operation scenarios were developed to analyze the long-term hydro-morphological effects of the dam on the downstream river reaches. It also assessed the applicability of physics-based analytical equations (Equilibrium Theory) compared to a 1D numerical model (SOBEK-RE) to determine the least-morphologically impactful dam operation scenario on the river reaches downstream of the dam. Moreover, a HEC-RAS 2D hydrodynamic model was developed to assess the effect of the dam on the flooding extent of the Fogera Plain. This was used to study the potential implications of hydrological alteration on the ecology of the floodplain wetlands, as they are the habitats of important fish and bird species. The results contribute to knowledge on the hydro-morphological and environmental impacts of dams on downstream river systems. The developed methodologies and findings may be used to study future hydro-morphological and ecological changes that may arise due to other dam operations or climate change.
Improved Water And Land Management In The Ethiopian Highlands Its Impact On Downstream Stakeholders Dependent On The Blue Nile Intermediate Results Dissemination Workshop Held At The International Livestock Research Institute Ilri Addis Ababa Ethiopia 5 6 February 2009
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Author : Awulachew, Seleshi Bekele
language : en
Publisher: IWMI
Release Date : 2009-11-24
Improved Water And Land Management In The Ethiopian Highlands Its Impact On Downstream Stakeholders Dependent On The Blue Nile Intermediate Results Dissemination Workshop Held At The International Livestock Research Institute Ilri Addis Ababa Ethiopia 5 6 February 2009 written by Awulachew, Seleshi Bekele and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-11-24 with categories.
This proceeding provides the papers and discussion results of a two-day workshop that was organized at International Water Management Institute (IWMI) office in Addis Ababa during the period of February 6-8, 2009 in relation to CPWF Project 19 – Improved water and land management in the Ethiopian Highlands and its impact on downstream stakeholders dependent on the Blue Nile. Short title: Upstream Downstream (USDS) in the Nile. The project is being under implementation during the last one and half years in partnership with various institutions that include International Livestock Research Institute, Cornell University, Omdurman Islamic University-UNESCO Chair in Water Resources, Addis Ababa University, Bahir Dar University, Amhara Regional Agricultural Research Institute and Forum for Social Studies. The main aims of the workshop had been: Bring together key stakeholders relevant to the project; Present, debate and validate the intermediate results of the project; Disseminate key results to wider audiences through workshop participating stakeholders; Follow up on the progress of the project and plan remaining tasks of the project. The workshop focus themes were: General characterization of the Blue Nile Basin; Watershed modeling and analysis; Water demand and allocation modeling and simulation; Policy and institutions of the water management in the Blue Nile basin.
Evaluation Of Current And Future Water Resources Development In The Lake Tana Basin Ethiopia
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Author : McCartney M. , Alemayehu T. , Shiferaw A. , Awulachew S.
language : en
Publisher: IWMI
Release Date : 2010
Evaluation Of Current And Future Water Resources Development In The Lake Tana Basin Ethiopia written by McCartney M. , Alemayehu T. , Shiferaw A. , Awulachew S. and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Tana, Lake (Ethiopia) categories.
Lake Tana, located in the headwaters of the Blue Nile, is valuable for many people including the communities who live around the lakeshore and those who live immediately downstream. The area has been identified as a region for hydropower and irrigation development, vital for economic growth in Ethiopia. A multidisciplinary study was conducted to assess the possible impacts of this development. This study found that current development has benefited some local people but adversely affected others. Future development will exacerbate pressure on the lake. Hard choices must be made about how the water is best utilized. It is important that all stakeholders, including local people, are involved in the decision-making process.
Assessment Of Causes And Impacts Of Flooding On Agricultural Production Of Plains Surrounding Lake Tana Ethiopia
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Author : Yirga Alemu Azene
language : en
Publisher: GRIN Verlag
Release Date : 2020-11-26
Assessment Of Causes And Impacts Of Flooding On Agricultural Production Of Plains Surrounding Lake Tana Ethiopia written by Yirga Alemu Azene and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-26 with Technology & Engineering categories.
Master's Thesis from the year 2007 in the subject Agrarian Studies, grade: Very Good, , course: Irrigation Engineering, language: English, abstract: This study is an attempt to identify the main causes and effect of flooding on agricultural production and the peoples living in the Lake Tana surroundings. Although floods are relatively common during the June to September rainy season in Ethiopia, the magnitude of the current flooding in 2006 is unprecedented. In year 2006 the country has experienced some of the heaviest and most intense rains on record; resulting in flash floods and/or the overflow of rivers, lakes and dams, where local residents have been advised to leave. The impact of the disaster in terms of lives, infrastructure, livelihoods, and basic coping mechanisms has yet to be assessed The rainfall variability analysis of the Lake Tana (LT) basin in 2006 showed an on average 43% increase in wet season rainfall than the normal (mean). All rainfall gauging stations show an increase in rainfall in 2006. Similarly, the variability analysis of major rivers also showed that on average 35% increase in flood season streamflow of G/Abay, Gumara, Rib, Megech, and Koga. The trend of these rivers shows that maximum runoff for the year 2006 was higher than the mean of the long term maximum flood. Whereas Lake Tana maximum flood level of 2006 (1787.155masl) shows an increase of 16 cm only from the mean flood levels of previous records (1787 masl). The Pearson III method of the moment probability distribution is the best fit for Megech and Rib rivers. For Gumara river Pearson III probability weighted moment distribution better estimate flood quantiles with less standard error. It is also found that Gamma two probability weighted moment is the best fit for Lake Tana water surface level. In general, from rainfall and flood frequency analysis the 2006-year flooding may have a chance to occur once in six years in LTB. The 2006-year flood damage indicates that there is a high impact on agricultural production of Lake Tana surrounding plains. 107,647 peoples were actually affected by floods. At least 448, 910 quantal of food grain, 1230 domestic animals, 9634 chickens, and 1088 bee-hives were damaged by the 2006 flood. The impacts of flooding on socio-economic and environmental resource indicators were qualitatively assessed. Totally twenty-seven indicators were assessed.
Social And Ecological System Dynamics
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Author : Krystyna Stave
language : en
Publisher: Springer
Release Date : 2017-04-06
Social And Ecological System Dynamics written by Krystyna Stave and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-04-06 with Technology & Engineering categories.
This book is a social—ecological system description and feedback analysis of the Lake Tana Basin, the headwater catchment of the Upper Blue Nile River. This basin is an important local, national, and international resource, and concern about its sustainable development is growing at many levels. Lake Tana Basin outflows of water, sediments, nutrients, and contaminants affect water that flows downstream in the Blue Nile across international boundaries into the Nile River; the lake and surrounding land have recently been proposed as a UNESCO Biosphere Reserve; the basin has been designated as a key national economic growth corridor in the Ethiopian Growth and Transformation Plan. In spite of the Lake Tana Basin’s importance, there is no comprehensive, integrated, system-wide description of its characteristics and dynamics that can serve as a basis for its sustainable development. This book presents both the social and ecological characteristics of the region and an integrated, system-wide perspective of the feedback links that shape social and ecological change in the basin. Finally, it summarizes key research needs for sustainable development.
Land And Hydropolitics In The Nile River Basin
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Author : Emil Sandstrom
language : en
Publisher: Routledge
Release Date : 2016-08-05
Land And Hydropolitics In The Nile River Basin written by Emil Sandstrom and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-05 with Political Science categories.
The Nile River Basin supports the livelihoods of millions of people in Egypt, Ethiopia, Sudan and Uganda, principally as water for agriculture and hydropower. The resource is the focus of much contested development, not only between upstream and downstream neighbours, but also from countries outside the region. This book investigates the water, land and energy nexus in the Nile Basin. It explains how the current surge in land and energy investments, both by foreign actors as well as domestic investors, affects already strained transboundary relations in the region and how investments are intertwined within wider contexts of Nile Basin history, politics and economy. Overall, the book presents a range of perspectives, drawing on political science, international relations theory, sociology, history and political ecology.
Nile And Grand Ethiopian Renaissance Dam
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Author : Assefa M. Melesse
language : en
Publisher: Springer Nature
Release Date : 2021-08-31
Nile And Grand Ethiopian Renaissance Dam written by Assefa M. Melesse and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-08-31 with Science categories.
This book is a contribution by the presenters of the 2020 International Conference on the Nile and Grand Ethiopian Renaissance Dam (GERD). The Nile basin is facing unprecedented level of water right challenges after the construction of GERD has begun. Ethiopia, Egypt and Sudan have struggled to narrow their differences on filling and operation of the GERD. The need for science and data-based discussion for a lasting solution is crucial. Historical perspectives, water rights, agreements, failed negotiations, and other topics related to the Nile is covered in this book. The book covers Nile water claims past and present, international transboundary basin cooperation and water sharing, Nile water supply and demand management, Blue Nile/Abbay and Grand Ethiopian Renaissance Dam, land and water degradation and watershed management, emerging threats of the Lakes Region in the Nile Basin, and hydrologic variation and monitoring. This book is beneficial for students, researchers, sociologists, engineers, policy makers, lawyers, water resources and environmental managers and for the people and governments of the Nile Basin.
Institutional Settings And Livelihood Strategies In The Blue Nile Basin Implications For Upstream Downstream Linkages
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Author : Haileslassie, A.
language : en
Publisher: IWMI
Release Date : 2009-02-05
Institutional Settings And Livelihood Strategies In The Blue Nile Basin Implications For Upstream Downstream Linkages written by Haileslassie, A. 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.
Through rapid assessment of existing literature and review of policy and other official documents, the report synthesizes the existing knowledge and gaps on policies and institutions and identifies key research issues that need in-depth study. The report provides an overview of the range of key livelihoods and production systems in the Blue Nile Basin (BNB) and highlights their relative dependence on, and vulnerability to, water resources and water-related ecosystem services. It also makes an inventory of current water and land related policies and institutions in the BNB, their organizational arrangements, dynamics and linkages and key policy premises. It highlights the major problems in institutional arrangements and policy gaps and makes suggestions for an in-depth Policy and Institutional Studies to be done as part of the Upstream-Downstream Research project.
The Nile River Basin
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Author : Seleshi Bekele Awulachew
language : en
Publisher: Routledge
Release Date : 2012
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 2012 with Science categories.
The Nile is the world's longest river and sustains the livelihoods of millions of people across ten countries in Africa. This book provides unique and up-to-date insights on agriculture, water resources, governance, poverty, productivity, upstream-downstream linkages, innovations, future plans and their implications.
The Grand Ethiopian Renaissance Dam On The Blue Nile
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Author : Wossenu Abtew
language : en
Publisher: Springer
Release Date : 2018-07-26
The Grand Ethiopian Renaissance Dam On The Blue Nile written by Wossenu Abtew and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-26 with Science categories.
This book is about the Grand Ethiopian Renaissance Dam newly being built on the Blue Nile, a transboundary river. Due to rising population and increasing water demand in the Nile basin, major projects raise interest and concern by millions with potential for water conflict. The dam design, reservoir filling policy, operation of the dam, riparian countries response, dam site importance and social impact and economy of the dam are presented in the book.