Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Modelling Hydrological And Hydrodynamic Processes In Lake Tana Basin Ethiopia
Download Modelling Hydrological And Hydrodynamic Processes In Lake Tana Basin Ethiopia full books in PDF, epub, and Kindle. Read online Modelling Hydrological And Hydrodynamic Processes In Lake Tana Basin Ethiopia ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Modelling Hydrological and Hydrodynamic Processes in Lake Tana Basin, Ethiopia by : Shimelis Gebriye Setegn
Download or read book Modelling Hydrological and Hydrodynamic Processes in Lake Tana Basin, Ethiopia written by Shimelis Gebriye Setegn and published by . This book was released on 2010 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrological and Sediment Yield Modelling in Lake Tana Basin, Blue Nile Ethiopia by : Shimelis Gebriye Setegn
Download or read book Hydrological and Sediment Yield Modelling in Lake Tana Basin, Blue Nile Ethiopia written by Shimelis Gebriye Setegn and published by . This book was released on 2008 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modélisation Hydrosédimentaire Dans Le Bassin Versant Du Lac Tana en Ethiopie by : Agizew Nigussie Engida
Download or read book Modélisation Hydrosédimentaire Dans Le Bassin Versant Du Lac Tana en Ethiopie written by Agizew Nigussie Engida and published by . This book was released on 2010 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study is conducted in Lake Tana basin located in the Upper Blue Nile Basin in Ethiopia where water resources issues are critical and availability of relevant data is poor. The study is divided into three major components that include evaluation and analysis of the existing data, evaluation of the applicability of a physically-based distributed hydrological model and water and suspended sediment balance modeling for Lake Tana. The temporal and spatial coverage of various hydro-meteorological variables was assessed in light of recommended practices in the literature. Analyses of the hydro-meteorological datasets comprised data quality control, and determination of their characteristics in space and time. The applicability of the fully distributed physically-based hydrological model was assessed on selected catchments. The modeling exercise revealed the importance of weather data disaggregation models in generating meteorological forcings at finer time scales. Considering the quality and resolution of the inputs used, the performance of the distributed model could be judged satisfactory in two of the selected mesoscale catchments. The water balance modeling of Lake Tana was done at a monthly time step and involved estimation of the major inflow and outflow components. A dynamic conceptual model was used to estimate the contribution of catchments for which data could not be obtained. The results of the water balance model at monthly and annual time scales was generally good and the observed lake levels could be reproduced satisfactorily. Estimation of the suspended sediment balance of the lake involved development and use of rating curves and a regional area-specific model. The results of the study are useful for planning and management of water resources in the study area.
Author :McCartney M. , Alemayehu T. , Shiferaw A. , Awulachew S. Publisher :IWMI ISBN 13 :9290907215 Total Pages :44 pages Book Rating :4.2/5 (99 download)
Book Synopsis Evaluation of current and future water resources development in the Lake Tana Basin, Ethiopia by : McCartney M. , Alemayehu T. , Shiferaw A. , Awulachew S.
Download or read book 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 published by IWMI. This book was released on 2010 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author :Taye, Meron Teferi Publisher :International Water Management Institute (IWMI) ISBN 13 :9290909404 Total Pages :36 pages Book Rating :4.2/5 (99 download)
Book Synopsis Data quality deterioration in the Lake Tana Sub-basin, Ethiopia by : Taye, Meron Teferi
Download or read book Data quality deterioration in the Lake Tana Sub-basin, Ethiopia written by Taye, Meron Teferi and published by International Water Management Institute (IWMI). This book was released on 2022-05-22 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Extreme Hydrology and Climate Variability by : Assefa M. Melesse
Download or read book Extreme Hydrology and Climate Variability written by Assefa M. Melesse and published by Elsevier. This book was released on 2019-07-03 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extreme Hydrology and Climate Variability: Monitoring, Modelling, Adaptation and Mitigation is a compilation of contributions by experts from around the world who discuss extreme hydrology topics, from monitoring, to modeling and management. With extreme climatic and hydrologic events becoming so frequent, this book is a critical source, adding knowledge to the science of extreme hydrology. Topics covered include hydrometeorology monitoring, climate variability and trends, hydrological variability and trends, landscape dynamics, droughts, flood processes, and extreme events management, adaptation and mitigation. Each of the book's chapters provide background and theoretical foundations followed by approaches used and results of the applied studies. This book will be highly used by water resource managers and extreme event researchers who are interested in understanding the processes and teleconnectivity of large-scale climate dynamics and extreme events, predictability, simulation and intervention measures. Presents datasets used and methods followed to support the findings included, allowing readers to follow these steps in their own research Provides variable methodological approaches, thus giving the reader multiple hydrological modeling information to use in their work Includes a variety of case studies, thus making the context of the book relatable to everyday working situations for those studying extreme hydrology Discusses extreme event management, including adaption and mitigation
Book Synopsis Downstream Consequences of Ribb River Damming, Lake Tana Basin, Ethiopia by : Chalachew Abebe Mulatu
Download or read book Downstream Consequences of Ribb River Damming, Lake Tana Basin, Ethiopia written by Chalachew Abebe Mulatu and published by CRC Press. This book was released on 2022-02-09 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Downstream Consequences of Ribb River Damming, Lake Tana Basin, Ethiopia by : Chalachew Abebe Mulatu
Download or read book Downstream Consequences of Ribb River Damming, Lake Tana Basin, Ethiopia written by Chalachew Abebe Mulatu and published by CRC Press. This book was released on 2022-02-09 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis A review of hydrology, sediment and water resource use in the Blue Nile Basin by : Seleshi Bekele Awulachew
Download or read book A review of hydrology, sediment and water resource use in the Blue Nile Basin written by Seleshi Bekele Awulachew and published by IWMI. This book was released on 2009-02-05 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Understanding Catchment Processes and Hydrological Modelling in the Abay/Upper Blue Nile Basin, Ethiopia by : SIRAK TEKLEAB. GEBREKRISTOS
Download or read book Understanding Catchment Processes and Hydrological Modelling in the Abay/Upper Blue Nile Basin, Ethiopia written by SIRAK TEKLEAB. GEBREKRISTOS and published by CRC Press. This book was released on 2018-09-27 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Abay / Upper Blue Nile basin contributes the largest share of discharge to the river Nile. However, the basin exhibits large spatio-temporal variability in rainfall and runoff. Moreover, human activities also impact hydrological processes through intensive agriculture, overgrazing and deforestation, which substantially affect the basin hydrology. Thus, understanding hydrological processes and hydro-climatic variables at various spatio-temporal scales is essential for sustainable management of water resources in the region. This research investigates the hydrology of the basin in depth using a range of methods at various spatio-temporal scales. The methods include long-term trend analysis of hydroclimatic variables, hydrologic responses analysis of land cover change, stable isotope techniques and process based rainfallrunoff modelling. A combination of field investigations with new measurements of precipitation, water levels and stable isotopes as well as existing hydro-climatic data offered gaining new insights about runoff generation processes in headwater catchments. The use of rainfall-runoff modelling in two meso-scale catchments of the Abay basin depict that a single model structure in a lumped way for the entire Abay basin cannot represent all the dominant hydrological processes. The results of the different approaches demonstrated the potential of the methods to better understand the basin hydrology in a data scarce region.
Book Synopsis Hydrological Models for Water-resources System Design and Operation by : A. Becker
Download or read book Hydrological Models for Water-resources System Design and Operation written by A. Becker and published by . This book was released on 1990 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Climate change impacts on hydrology and water resources of the Upper Blue Nile River Basin, Ethiopia by : Kim, U., Kaluarachchi, J. J., Smakhtin, V. U.
Download or read book Climate change impacts on hydrology and water resources of the Upper Blue Nile River Basin, Ethiopia written by Kim, U., Kaluarachchi, J. J., Smakhtin, V. U. and published by IWMI. This book was released on 2008 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report evaluates the impacts of climate change on the hydrological regime and water resources of the Blue Nile River Basin in Ethiopia. It starts from the construction of the climate change scenarios based on the outcomes of several general circulation models (GCMs), uses a simple hydrological model to convert theses scenarios into runoff, and examines the impacts by means of a set of indices. The results, however uncertain with existing accuracy of climate models, suggest that the region is likely to have the future potential to produce hydropower, increase flow duration, and increase water storage capacity without affecting outflows to the riparian countries in the 2050s.
Book Synopsis Integrated Modelling of Hydrological and Hydrodynamic Processes, Dynamic Bacteria Decay with Climate Change and Intensive Farming in Riverine and Estuarine Water by : Jie Shi
Download or read book Integrated Modelling of Hydrological and Hydrodynamic Processes, Dynamic Bacteria Decay with Climate Change and Intensive Farming in Riverine and Estuarine Water written by Jie Shi and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysing Water Quality and Its Impact Towards Sustainable Basin Management by :
Download or read book Analysing Water Quality and Its Impact Towards Sustainable Basin Management written by and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Groundwater-Surface Water Interactions by : Habil. Jörg Lewandowski
Download or read book Groundwater-Surface Water Interactions written by Habil. Jörg Lewandowski and published by MDPI. This book was released on 2020-12-10 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent years have seen a paradigm shift in our understanding of groundwater–surface water interactions: surface water and aquifers were long considered discrete, separate entities; they are now understood as integral components of a surface–subsurface continuum. This book provides an overview of current research advances and innovative approaches in groundwater–surface water interactions. The 20 research articles and 1 communication cover a wide range of thematic scopes, scales, and experimental and modelling methods across different disciplines (hydrology, aquatic ecology, biogeochemistry, and environmental pollution). The book identifies current knowledge gaps and reveals the challenges in establishing standardized measurement, observation, and assessment approaches. It includes current hot topcis with environmental and societal relevance such as eutrophication, retention of legacy, and emerging pollutants (e.g., pharmaceuticals and microplastics), urban water interfaces, and climate change impacts. The book demonstrates the relevance of processes at groundwater–surface water interfaces for (1) regional water balances and (2) quality and quantity of drinking water resources. As such, this book represents the long-awaited transfer of the above-mentioned paradigm shift in understanding of groundwater–surface water interactions from science to practice.
Book Synopsis Assessment of Climate Change Impacts on the Hydrology of Gilgel Abbay Catchment in Lake Tana Basin, Ethiopia by : Abdo Kedir Shaka
Download or read book Assessment of Climate Change Impacts on the Hydrology of Gilgel Abbay Catchment in Lake Tana Basin, Ethiopia written by Abdo Kedir Shaka and published by . This book was released on 2008 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessment of Causes and Impacts Of Flooding On Agricultural Production of Plains Surrounding Lake Tana, Ethiopia by : Yirga Alemu Azene
Download or read book Assessment of Causes and Impacts Of Flooding On Agricultural Production of Plains Surrounding Lake Tana, Ethiopia written by Yirga Alemu Azene and published by GRIN Verlag. This book was released on 2020-11-26 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
