2 edition of Reservoir siltation in Ethiopia found in the catalog.
Reservoir siltation in Ethiopia
Lulseged Tamene Desta.
|Other titles||Ecology and development series, no. 30, 2005|
|Statement||Lulseged Tamene Desta.|
|Series||Ecology and development series -- no. 30|
|Contributions||Universität Bonn. Zentrum für Entwicklungsforschung.|
|LC Classifications||TD319.E8 L84 2005|
|The Physical Object|
|Pagination||198 p. :|
|Number of Pages||198|
|LC Control Number||2009494984|
Title: Reservoir siltation in the semi-arid highlands of northern Ethiopia: sediment yield-catchment area relationship and a semi-quantitative approach for predicting sediment yield. Eutrophication and siltation on Angereb reservoir, Ethiopia: Ecohydrological solution 3 rd International Conference on Earth Science & Climate Change. Wondwossen Beyene Debebe. Accepted Abstracts: J Earth Sci Clim Change DOI: /SAuthor: Wondwossen Beyene Debebe.
Siltation. Ethiopia's rivers carry a high silt content, due to heavy erosion which is accelerated by deforestation and inappropriate agricultural practices on steep mountain slopes. The reservoir of one of Ethiopia's oldest large dams, the Awash dam commissioned in , is close to reaching the end of its useful life due to siltation. The reservoir survey, which is the first of its kind in Ethiopia, also indicates that specific sediment yield (SSY) varies significantly between catchments: i.e. from to t km −2 y −1 with an average of (± ) t km −2 y −1. The high spatial variability is mainly associated with differences in Cited by:
Additionally, no siltation takes place in the reservoir and the potential disaster like collapse of dams can be avoided. Sitharam has recently advocated building coastal reservoirs as well. According to him, storing floodwater during rainy season with the help of coastal reservoirs is the Missing: Ethiopia. Imagine a reservoir the size of the Hemavati dam in Hassan district completely filled with sand and mud and unable to retain water. With silt accumulating in the State’s 11 major reservoirs Missing: Ethiopia.
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The silting of dam reservoirs is the most challenging problem in Ethiopia. Sedimentation adversely affects the reservoir capacity. The loss of storage capacity is particularly felt in connection with energy production, water supply for domestic use, industry and agriculture, and in flood : $ Reservoir siltation in the semi‐arid highlands of northern Ethiopia: sediment yield–catchment area relationship and a semi‐quantitative approach for predicting sediment yield.
Tamene. Corresponding Author. E-mail address: [email protected]‐ by: Siltation is the main threat of water harvesting schemes and hydro-electric power dams in Ethiopia and needs to be prevented rather than corrected.
This study is a first attempt in the drylands of northern Ethiopia to elucidate the source areas of sediments within a catchment and the factors controlling the instability of these soils.
Reservoir sedimentation is a worldwide problem hampering the sustainable use of reservoirs and the sediment balance of impacted rivers. Various techniques are applied for sediment mitigation. Title: Sediment yield and reservoir siltation in Tigray, Ethiopia: Language: English: Author, co-author: Vanmaercke, Matthias [Université de Liège - ULiège > Département de géographie > Géographie physique et du quaternaire >]: Hargeweyn, Nigussie : Zenebe, Amanuel.
Reservoir sedimentation is the most serious threat for water harvesting schemes and hydroelectric power dams in Ethiopia. Designing watershed conservation strategies and management is crucial to Author: Lulseged Tamene.
Reservoir siltation in the semi-arid highlands of northern Ethiopia: sediment yield–catchment area relationship and a semi-quantitative approach for predicting sediment yield. Several Australian dams failed slowly because of reservoir siltation, although the authorities do not acknowledge it.
The writer investigated reservoir siltation cases (e.g. CHANSONCHANSON and JAMES a,b).Between andnumerous dams became fully-silted, mostly in New South Wale (Fig.
1 and 2).Koorawatha dam was the second arch dam built at the same site. because of reservoir siltation. The rapid reduction in the storage capacity of reservoirs due to siltation is a major sediment- related problem world-wide.
Moreover, the availability of water for irrigation from the reservoir leads to more intensive land use and increased soil erosion. Siltation, or sans, is water pollution caused by particulate terrestrial clastic material, with a particle size dominated by silt or refers both to the increased concentration of suspended sediments and to the increased accumulation (temporary or permanent) of fine Missing: Ethiopia.
Reservoir siltation in the highlands of northern Ethiopia Tamene et al ESPL. An ACP-EU Technology-Transfer Network on Rainwater Harvesting Irrigation Management for Sustainable Dryland Agriculture, Food Security and Poverty Alleviation in sub-Saharan Africa.
Abstract. Sediment yield (SY) is the total mass of sediment that leaves a catchment per unit of time. It is the combined result of several erosion processes (e.g. sheet and rill erosion, gully erosion, riverbank erosion, landslides) and sediment deposition (e.g.
at field boundaries, on footslopes, alluvial plains, river beds) taking place in the river : Matthias Vanmaercke, Nigussie Haregeweyn, Amanuel Zenebe, Jan Nyssen, Jean Poesen. E-book: Reservoir Siltation in Ethiopia: Causes, Source Areas, and Management Options Surface dams: E-book: Rainwater Harvesting Technology Systems (RWH) Rainwater Harvesting Technology Systems (RWH) Title Filter Search.
Name. Sub-Category. Type of Information. PDF. Soil erosion on arable land is the key driver of reservoir siltation in the German loess belt. In this regard, the Baderitz Reservoir suffers from deleterious sediment inputs and resulting siltation processes. In order to estimate the reservoir lifespan, the event-based soil erosion and deposition model EROSION 3D was applied.
Simulations of sediment input and sediment deposition processes Author: Marcus Schindewolf, Constanze Bornkampf, Michael von Werner, Jürgen Schmidt. Soil erosion in Ethiopian highlands has caused land deterioration due to moving nutrient-rich top soil to downstream reservoirs while leaving reservoirs dysfunctional due to sedimentation.
Micro-watershed management by removing reservoir sediments and using them for reclaiming farmland, while using reservoir water for irrigation, can be a potential solution to simultaneously address soil and Cited by: 1.
Abstract. Siltation of 26 large and small dams, spatially distributed in the Souss–Massa basin, has been investigated. The disparity observed in the reservoir’s silting reflects the variability of each watershed’s physical parameters that control the water by: 1.
Tamene LReservoir siltation in the drylands of northern Ethiopia: causes, source areas and management options. PhD Thesis, Ecology and Development Ser Center for Development Research, University of Bonn. Lulseged Tamene Desta “Reservoir Siltation in Ethiopia: Causes, Source areas, and Management options”, University of Bonn, Center for Development Research (ZEF), Problem statement More than 85 % of the population of Ethiopia directly depends on agriculture, which is highly influenced by rainfall that is erratic and unpredictable.
South Gondar, Ethiopia. Materials and Methods Description of the Study Area This study was conducted at Selameko manmade reservoir, south-west of Debre tabor town, Ethiopia.
This manmade reservoir is found m (above sea level), specifically located at 38° 05' E and 11° 53' 24" N (Figure 1). The reservoir was constructed in File Size: KB. Siltation in reservoirs has become an important problem when dams are getting older and stop functioning when the sediment has accumulated to a certain extent.
With proper sediment management techniques, negative effects of sediment can be avoided and reservoir Missing: Ethiopia.The Nile Basin sediment loss and degradation, with emphasis on the Blue Nile.
productivity and degradation of the environment. Poor agricultural and other practices affect run-off characteristics resulting in increased erosion and siltation and reduced water quality in the BNB (Awulachew. .The Gilgel Gibe Hydroelectric project is located about 55 km from Jimma (Ethiopia) on the Addis Ababa-Jimma highway as shown in Fig.
Gilgel Gibe dam was built with an estimated total cost of billion Birr with the finantial support of the World Bank (Yonas, ).A cross-sectional study was conducted during to assess siltation and nutrient enrichment of Gilgel Gibe by: