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... The Austrian Commission on Dams has been established as a panel of experts of all fields of Dam Engineering to support authorities in and outside the licensing process concerning dams.The aim was that authorities have to involve the Commission to take care that the assessment of new dam projects and the supervision of existing dams comply with the state oft the art.In over 100 meetings the Austria ...
laboratories; simulation models; equations; floods; model validation; water flow; dams (hydrology); algorithms; prediction
Abstract:
... To predict flood and debris flow dynamics a numerical model, based on 1D De Saint Venant (SV) equations, was developed. The McCormack-Jameson shock-capturing scheme was employed for the solution of the equations, written in a conservative-law form. This technique was applied to determine both the propagation and the profile of a two-phase debris flow resulting from the instantaneous and complete c ...
... In April 2000 a large-scale rock avalanche dammed the Yigong Zangpo River, forming an extensive rockslide-dammed lake. The impoundment lasted for 62days before a catastrophic breaching caused a massive outburst flood in the Yarlung Zangpo (Tibet) and the Dihang rivers (India) that travelled downstream to the main floodplain of the Brahmaputra in northeastern India. In response to discrepancies in ...
climatic factors; dams (hydrology); floods; infrastructure; insurance; land use planning; rain; risk; risk management; rivers; state government; streams; water supply; watersheds; Queensland
Abstract:
... On 13th January 2011 major flooding occurred throughout most of the Brisbane River catchment, most severely in Toowoomba and the Lockyer Creek catchment (where 23 people drowned), the Bremer River catchment and in Brisbane, the state capital of Queensland. Some 56,200 claims have been received by insurers with payouts totalling $2.55 billion. This paper backgrounds weather and climatic factors imp ...
... In late June 2013, heavy rainfall and rapidly melting alpine snow triggered flooding throughout much of the southern half of Alberta. Heavy rainfall commenced on 19 June and continued for 3 days. When the event was over, more than 200 mm and as much as 350 mm of precipitation had fallen over the Front Ranges of the Canadian Rocky Mountains. Tributaries to the Bow River including the Ghost, Kananas ...
Salmo trutta; dams (hydrology); fish communities; freshwater ecosystems; habitats; humans; rivers; spawning; surveys; trout; vegetation; water flow; Denmark
Abstract:
... Humans and freshwater ecosystems have a long history of cohabitation. Today, nearly all major rivers of the world have an in-stream structure which changes water flow, substrate composition, vegetation, and fish assemblage composition. The realization of these effects and their subsequent impacts on population sustainability and conservation has led to a collective effort aimed to find ways to mit ...
... Large-scale landslide dams triggered by earthquakes or rainfall can cause disasters due to inundation upstream and outburst floods downstream after dam failure. Landslide dams formed by rock/debris avalanches are loose in structure and have a lack of stability; thus they are more susceptible to breaking. The morphological and structural features of landslide dams directly depend on the formation p ...
... Hydraulic structures are often complex and in many cases their designs require attention so that the flow behavior around hydraulic structures and their influence on the environment can be predicted accurately. Currently, more efficient computational fluid dynamics (CFD) codes can solve the Navier–Stokes equations in three-dimensions and free surface computation in a significantly improved m ...
algorithms; case studies; computer software; dams (hydrology); equations; gravity; modulus of elasticity; permeability; seepage; Iran
Abstract:
... The issue of seepage and its management is essential in earth dams which if exceeded from a certain stage the destruction of dam is probable. Despite the studies run through consulting engineers, the hydraulic behaviors of both body and foundation cannot be predicted. To understand the function of such structures, the geotechnical software PLAXIS 3D based on FEM is applied to determine the transie ...
dams (hydrology); ecosystems; electricity generation; environmental performance; fossil fuels; greenhouse gas emissions; greenhouse gases; irrigation; life cycle assessment; power generation; power plants; sustainable technology; water power; Ecuador
Abstract:
... Hydropower is one of most important considered renewable technologies to provide electricity generation worldwide. Bearing in mind the lack of LCA studies and the development of several hydroelectric projects in Ecuador, the purpose of this paper is to present a complete environmental performance of two hydropower schemes (dam and run-of-river) located in this country, through the life cycle asses ...
... In acid mine drainage (AMD) polluted rivers, considerable fraction of potential toxic elements are temporarily sequestered by sediments. There are two main potential environmental hazards associated with the sediments, acidity liberation and re-mobilization of metallic elements, during environmental conditions change. The effects of AMD standstill and water dilution on metallic elements migration ...
adverse effects; algorithms; dams (hydrology); economic development; environmental degradation; issues and policy; livelihood; rivers; simulation models; total dissolved solids; water quality; water storage; water supply; watersheds; Iran
Abstract:
... The Meimeh dam construction is a project, planned to provide sustainable livelihoods, social, and economic developments in the Meimeh River Basin, Ilam, Iran. However, due to the high concentration of TDS in the Meimeh River and its tributaries, river impoundment and water storage can be harmful to the Meimeh Reservoir. The upstream inflow control and the reservoir operation management in a select ...
... Alterations to water management practices, in response to a growing demand to maximize energy production from renewable sources, threaten to exacerbate anticipated future water shortages caused by severe drought episodes, brought on by climate change. Across Scotland, many highly managed systems are inhabited by some of the last remaining reproductively viable populations of the freshwater pearl m ...
dams (hydrology); developmental stages; fisheries; floodplains; freshwater fish; habitats; infrastructure; irrigation; migratory behavior; rivers; water power; weirs; Indonesia
Abstract:
... Development activities threaten the long-term sustainability of tropical floodplain systems. The construction of dams, weirs, irrigation infrastructure and regulators affect connectivity among habitats and can facilitate rapid declines in riverine biota, especially fish. Indonesia is a tropical island country with an abundance of monsoonal rivers. Massive expansions in hydropower and irrigation in ...
dams (hydrology); governmental programs and projects; livelihood; China
Abstract:
... On 19 May 2011, the State Council released a statement vowing to overcome ‘issues’ created by the now completed Three Gorges Dam. Among these was the well-being of those displaced to make way for its construction. In the same statement, the Central Government promised that the displaced would catch up with provincial living standards by 2020. This paper examines some of the residual issues facing ...
... Earthen dams are built since early days of civilization. These dams constitute to be the most common type, because it is generally built of locally available materials which derive strength from their position, friction and cohesion. Many earth fill dams are vulnerable to failures due to seepage problems that take place in the core since all soils are pervious to a smaller or larger extent. One of ...
... To increase renewable energy generation in some hydroelectric dams, a solution consisting in installing wind turbines close to dams is proposed. Indeed, dam surroundings are prone to benefit from wind speed-up effect, extra wind generation associated with thermal winds, and existing electrical infrastructure. Identifying the most suitable locations for turbines, that is, areas of relatively high-s ...
Petromyzon marinus; aquatic ecosystems; basins; dams (hydrology); fish; fish communities; fish ladders; fisheries; habitats; invasive species; surveys; Great Lakes
Abstract:
... Addressing the impact of dams and other water control structures on fish communities and aquatic ecosystems is a major concern for fisheries managers in the Laurentian Great Lakes. Although nature-like and technical fishways (i.e., vertical slot, pool and weir, Denil) and, when suitable, barrier removals have been implemented across the basin, these fish passage applications are vastly outnumbered ...
... Geomorphic evolution of the Wahiba Dune Field, Oman, during the Quaternary has occurred within a set of boundary conditions that include climatic forcing of fluvial, aeolian and eustatic cycles within an active tectonic basin. Because of basin down-warping and sediment transport into the basin, evolution of the geomorphic surface has been accompanied by the generation of a distinctive stratigraphi ...
... Many glacier dams on major rivers at the southeastern edge of the Tibetan Plateau had been previously determined through remote sensing and glacier terminal position calculation. It was hypothesized that such damming substantially impeded river incision into the plateau interior. Investigation on the large glacial-dammed lake at the entrance of Tsangpo gorge is critical for understanding this hypo ...