نتایج جستجو برای: dam bottom outlet
تعداد نتایج: 86892 فیلتر نتایج به سال:
Laboratory experiments of dam-break flows are extensively used in investigations geophysical involving flood waves, to provide insight into relevant aspects the physics process and collect experimental data for validating numerical models. A flow is a typical example highly unsteady free surface with high reproducibility. Indeed, can be repeated several times under same test conditions obtainin...
The 4-year drawdown of Horsetooth Reservoir, Colorado, for dam maintenance, provides a case study analog of vegetation response on sediment that might be exposed from removal of a tall dam. Early vegetation recovery on the exposed reservoir bottom was a combination of (1) vegetation colonization on bare, moist substrates typical of riparian zones and reservoir sediment of shallow dams and (2) a...
Recently, widespread valley-bottom damming for water power was identified as a primary control on valley sedimentation in the mid-Atlantic US during the late seventeenth to early twentieth century. The timing of damming coincided with that of accelerated upland erosion during post-European settlement land-use change. In this paper, we examine the impact of local drops in base level on incision ...
In order to quantitatively evaluate the sediment yield in ungauged basins, it is necessary to use empirical models. The EPM model, as a model which is using in Iran, has sometimes been evaluated. Most evaluations have often been conducted by using river's sediment information and direct measurements of dam reservoir sedimentation have been less used, while the sediment measurement method on r...
The migration of fish is influenced by the unique environmental characteristics destination and migratory habitat preferences. There are three fishways in Miyanaka Intake Dam. rock-ramp fishway was newly established 2012, creating an environment with different flow velocities water depths. purpose this study to investigate effectiveness new for native through two surveys. In first survey, traps...
The seasonal concentrations of dissolved oxygen in a subtropical deep reservoir were studied over a period of one year. The study site was the Feitsui Reservoir in Taiwan. It is a dam-constructed reservoir with a surface area of 10.24 km(2) and a mean depth of 39.6 m, with a maximum depth of 113.5 m near the dam. It was found that certain weather and climate events, such as typhoons in summer a...
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