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• By-passing sediments
  [[file:sediment_bypass_locations.png|thumb|250px|Figure 1: Sediment pass-by tunnel with two different locations of the intake: a) intake locate ...ss. Consequently, sediments are not transported past the dam, resulting in sediment starvation in the downstream river reach. Lack of sediments can induce seve
  6 KB (838 words) - 10:03, 26 October 2020
• Off-channel reservoir storage
  ...le sediment-laden water is flowing through the river. c) Sediment by-pass: sediment-laden waters are diverted through a bypass tunnel and released downstream t ...nsequently, sediments are not transported downstream the dam, resulting in sediment starvation in the downstream river. Lack of sediments can induce severe mor
  4 KB (563 words) - 10:03, 26 October 2020
• Sediments
  ...s a barrier in the hydrological system as they interrupt the continuity of sediment transport through rivers systems. Sediments are trapped in reservoirs and r ...s particularly impacted the sediment cycle by accelerating the delivery of sediment to rivers and increasing the quantity of smaller particle sizes. Excess of
  8 KB (1,067 words) - 14:10, 9 October 2020
• Sediment sluicing
  .... Prior to sluicing, the reservoir is drawn down, and gates are open. High sediment-laden waters flow through the gates.]] Reservoir sluicing aims at passing sediment through the dam without allowing deposition. In contrast to flushing which
  5 KB (786 words) - 10:01, 26 October 2020
• Drawdown reservoir flushing
  ...voir and reduce its storage capacity. In geographical areas with very high sediment yields, reservoirs can be filled with sediments after some years of operati ...e level. However, in large rivers with run-of-the-river hydropower plants, sediment flushing does not necessarily require a complete stop of power production.
  7 KB (1,127 words) - 10:03, 26 October 2020
• Mechanical removal of fine sediments (dredging)
  ...Similarly, in some rivers, regulation has strongly reduced the flow while sediment yield has not been altered, leading to an exceed of fine sediments in the r ...to the river bank and adapted movements around the removal site are simple measures to integrate to the overall planning of fine sediments dredging.
  2 KB (373 words) - 10:03, 26 October 2020
• Minimizing sediment arrival to reservoir
  Natural variations in sediment concentration occur over days, weeks, seasons and years. They are induced b ...of sediments in water can be implemented to improve fish habitat quality. Measures consisting in reducing the amount of sediments entering the reservoir have
  5 KB (670 words) - 10:03, 26 October 2020
• Schiffmühle test case
  ...body. The river has a moderate ecological potential. Various measures for sediment control, fish migration, flow changes, habitat in-channel and morphology of ===Sediment management===
  9 KB (1,372 words) - 15:44, 30 September 2020
• Costs of solutions
  ...ed with mitigation according to the categories of habitat, fish migration, sediment and flow were collected by consulting FIThydro partners via a questionnaire ...res. The values should therefore be interpreted as the ranges of costs for measures, rather than precise costs. The range estimates are based on case studies f
  16 KB (2,008 words) - 14:06, 9 October 2020
• Main Page
  ...use of existing and innovative technologies. It concentrates on mitigation measures and strategies to develop cost-efficient environmental solutions and on str ...ble to all possible sites, and often the solution will be a combination of measures.
  6 KB (824 words) - 15:08, 27 March 2023
• Hydropower and policy
  ...ration of 'status' in a water body. Where this is not possible, mitigation measures should be applied. programme of measures to tackle significant pressures on water bodies, including among others tho
  26 KB (3,617 words) - 15:57, 11 August 2020
• Cleaning of substrate - ripping, ploughing and flushing
  ...re regulation) of maybe 10 years or more might be needed to remobilise the sediment. ...es use of an excavator equipped with a special claw that will mobilise the sediment, and it releases the fine material that is flushed away with the natural fl
  6 KB (921 words) - 10:04, 26 October 2020
• Decision support system
  ...and risk assess, those proposals whilst identifying appropriate mitigation measures to address the impact of both new and existing HPP schemes. The framework l ...assess those proposals and, additionally, identify appropriate mitigation measures to address the impact of an existing scheme or portfolio of existing scheme
  10 KB (1,468 words) - 11:57, 27 October 2020
• Mitigating reduced flood peaks, magnitudes, and frequency
  ...iverables the sediment measure is referred to as "Hydraulic conditions for sediment transport". ...out finer sediment fractions. In later sections of this document, habitat measures to refresh the substrate have been described, which will reinstate the natu
  5 KB (814 words) - 10:03, 26 October 2020
• Sediment simulation in intakes with Multiblock option (SSIIM)
  SSIIM is a numerical model to simulate the hydraulics and sediment transport including bed changes as well as various other parameters related ...tation to the most complex one, when combining unsteady flow with multiple sediment sizes and wetting and drying of parts of the geometry.
  3 KB (502 words) - 14:23, 1 June 2020
• Freudenau test case
  ...iameter of 7.5 m the turbines rank among the biggest in Europe. Ecological measures include the water supply to the New and Old Danube, new biotopes, and an ec ...for designation as HMWB ((heavily modified waterbody) are manifold and any measures to reach the good ecological status have significant adverse effects on hyd
  12 KB (1,913 words) - 13:03, 27 October 2020
• HEC-RAS
  ...The current version allows users to perform 1D/2D unsteady flow modelling, sediment transport/mobile bed computations, and water temperature/water quality mode ...hydraulic structures design and analysis (e.g. bridges, weirs, culverts), sediment transport studies, scour/deposition analysis, dam break analysis (e.g. timi
  8 KB (1,212 words) - 13:38, 29 September 2020
• Mitigation requirements for hydropower plants
  When planning mitigation measures for new or existing hydropower plants, the mitigation requirements based on *gravel transport (sediment), and
  6 KB (786 words) - 14:49, 14 September 2020
• Placement of stones in the river
  Note that this measure is included in both the habitat and sediment categories. ...ter juvenile fish. Combined with changes in the reduction in large floods, sediment dynamics and clogging of the substrate, shelter can be the limiting factor
  6 KB (973 words) - 10:03, 26 October 2020
• Placement of spawning gravel in the river
  Note that this measure is included in both the habitat and sediment categories. River regulations often change the natural flow regime and the sediment connectivity, introducing changes to the substrate composition both in the
  11 KB (1,652 words) - 11:45, 16 March 2021

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