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• Fish refuge under hydropeaking conditions
  ...ped in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}} ...d cover refuge areas respectively. All dimensions are in meters (m) except for E.]]
  14 KB (1,950 words) - 10:03, 26 October 2020
• Fish guidance structures with narrow bar spacing
  ...ced in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}} Different measures are used to protect downstream moving fish (details in [https://www.fithydr
  18 KB (2,762 words) - 09:53, 10 May 2021
• Nature-like fishways
  ...structures in the main river (e.g. physical obstacles and guiding elements for migratory fish). In addition to functioning as an upstream migration corrid ...and different fish species, and this should be considered when designing, for example with V-shaped entrance profile, slots in the tahlweg and high bed r
  7 KB (1,106 words) - 10:01, 26 October 2020
• Fish-friendly turbines
  ...m), essentially on the Columbia and Snake River dams (west coast of USA). For example: installation of advanced turbines Minimum Gap Runner (MGR) at Bonn ..., 2003). A first prototype site for demonstration purposes is still looked for (Dixon, 2015).
  13 KB (1,903 words) - 10:03, 26 October 2020
• River2D
  ..._wua.jpg|thumb|250px|Figure 4: Weighted Usable Area (WUA) (m²) for the European Eel. Ocreza River, Portugal (source:adapted from Boavida et al ...Weighted Usable AreaWUA (m²) and discharge in the Ocreza River for Iberian barbel (adult and juvenile), European eel (adult and juvenile) and
  8 KB (1,166 words) - 13:53, 13 April 2020
• Pool-type fishways
  [[file:pool_type_fishway_norway.png|thumb|250px|Figure 1: Pool-type fishway for salmon and trout in Norway.]] ...r flow at varying upstream water levels. This fishway type may be suitable for adult salmon and large trout even when the available terrain is steep.
  5 KB (788 words) - 10:01, 26 October 2020
• Altheim test case
  {{Fact box for Altheim}} {{Relevant SMTDs for Altheim}}
  9 KB (1,512 words) - 14:02, 21 October 2020
• Mitigating reduced annual flow and low flow measures
  ...reductions in total, annual flow, as large volumes of water are withdrawn for the purpose of producing electricity. The changes will depend on the hydrol ..., 2012). Q95 or variants of this is used in several countries as benchmark for the lowest flow releases in rivers with dramatically reduced flows. Q95 ref
  7 KB (1,131 words) - 10:05, 26 October 2020
• Double Averaging method
  ...ced in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}} [[file:dam_velocity.png|thumb|500px|Figure 1: Reynolds decomposition for the velocity component ''u'']]
  9 KB (1,204 words) - 14:07, 8 October 2020
• HEC-RAS
  ...ring Center (CEIWR-HEC), United States Corps of Engineers (USACE)Institute for Water Resources ...ort/mobile bed computations, and water temperature/water quality modelling for a full network of natural and constructed channels, or a single river reach
  8 KB (1,212 words) - 13:38, 29 September 2020
• Fish guidance structures with wide bar spacing
  ...ped in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}} ...ructures (FGS) with wide bar spacing and vertical bars have been developed for using at RoR HPPs and water intakes with high design discharges. These are
  15 KB (2,120 words) - 09:52, 10 May 2021
• CASiMiR
  ...ced in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}} ..._fish.png|thumb|250px|Figure 1: CASiMiR model of river stretch and results for adult barbel (source:SJE Ecohydraulic Engineering GmbH).]]
  5 KB (746 words) - 13:58, 6 July 2020
• Differential pressure sensor base artificial lateral line probe, iRon
  ...ced in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}} ...ure sensors (1-6), and the absolute pressure sensor (7)[3].(source: Centre for Biorobotics, TUT).]]
  7 KB (952 words) - 13:04, 30 September 2020
• Mitigating reduced flood peaks, magnitudes, and frequency
  ...deliverables the sediment measure is referred to as "Hydraulic conditions for sediment transport". ...e orange is the flow after regulation. Note that the data series are shown for different time periods.]]
  5 KB (814 words) - 10:03, 26 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
• Cassiopee
  Developed by: French agency for biodiversity (AFB) ...ge ([[Nature-like_fishways]], [[Pool-type_fishways]], [[Baffle_fishways]], for futher information on the different type of fishways please see the deliver
  5 KB (729 words) - 13:34, 26 October 2020
• Construction of off-channel habitats
  ...e habitats for fish less accessible. In some cases, establishment of areas for fish can be an important measure to extend the living areas. ...er to assess under what flow conditions the different areas are accessible for species with various swimming and jumping capabilities and habitat requirem
  3 KB (515 words) - 10:04, 26 October 2020
• Cleaning of substrate - ripping, ploughing and flushing
  ...ty of eggs. This method is not efficient to improve the shelter conditions for adult fish (Pulg et al. 2017). ...quality of spawning areas would be to assess if these are limiting factors for the development of fish population, i.e. diagnosis according to the environ
  6 KB (921 words) - 10:04, 26 October 2020
• Dilution gauging
  ...3.png|thumb|250px|Figure 2: Dilution gauging in a fishway: Mariotte device for continuous injection into the fishway (source: Itagra.ct).]] ...er and the discharge we want to know. There are two main different methods for the injection of the tracers into the flow: (a) instantaneous or integratio
  4 KB (661 words) - 15:25, 11 April 2020
• Hydropeaking tool
  ...ped in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}} ...ool_principle.png|thumb|250px|Figure 1: Principle of the hydropeaking tool for categorization of regulated rivers according to the potential impacts of hy
  4 KB (541 words) - 13:24, 2 December 2020
• Vertical slot fishways
  ...ced in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}} ...ogy than a unique recirculation zone flow topology (obtained when B/b <7). For different pool lengths, one can recommend keeping the same width / length r
  9 KB (1,440 words) - 10:40, 26 January 2021
• Bypass combined with other solutions
  ...of surface bypasses combined with conventional bar racks existing at HPPs for turbine protection (solution not too expensive and cumbersome). Most studie ...h to remain for a sufficiently long time in front of the bar rack in order for them to be guided to the bypass entrance.
  4 KB (667 words) - 15:01, 26 January 2021
• Sensory, behavioural barriers (electricity, light, sound, air-water curtains)
  ...e in terms of species and sizes. Fish may also be accustomed to deterrence measures over time, so that they get lower efficiency. *Electric screens (for more information: [[Fish Protection System (induced drift application)]])
  5 KB (663 words) - 10:02, 26 October 2020
• Hydropeaking indicator
  ...ced in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}} ...march to mid-june); effect of the progressive implementation of mitigation measures since 2001 (source: [2]).]]
  5 KB (747 words) - 20:08, 27 September 2020
• COSH-tool
  ...ced in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}} ...osh_tool_peaks_day.png|thumb|250px|Figure 4: Number of peak events per day for each year of the time series (click to expand)(source:SINTEF Energy Researc
  5 KB (703 words) - 13:03, 26 October 2020
• Current meter
  ...low cross-section with the verticals (in red) and the points (black dots) for velocity measurement with the current meter]] ...vertical depends on the water level. For example, only one point is needed for water level <20 cm at 60% of the water level. If there are only 2 measureme
  5 KB (716 words) - 16:08, 10 April 2020
• LiDAR
  ...als.png|thumb|250px|Figure 3: Discrete Echo and waveform signal comparison for Airborne Laser Scanning (https://commons.wikimedia.org/wiki/File:Airborne_L Lidar is a measurement technique that measures the distance from a georeferenced laser sensor to a ground target by illumi
  8 KB (1,122 words) - 14:27, 1 October 2020
• Mitigating rapid, short-term variations in flow (hydro-peaking operations)
  ...r system downstream the outlet of the hydropower plant, and iii) technical measures directly on the power plant/infrastructure, i.e. a technical setup that all The measures presented in the following are all related to changes in flow.
  5 KB (724 words) - 10:03, 26 October 2020
• Migration barrier removal
  ...y be maintained but also in power-regulated rivers there are possibilities for removing obstacles. In particular, smaller weirs have been removed in resid ...ions, assuring a stable bottom substrate and hydraulic conditions suitable for fish migrations
  4 KB (525 words) - 10:03, 26 October 2020
• Bedload monitoring system
  ...ped in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}} In contrast to the SPGS, the steel tube is used as an impact plate for the BMS, and the sensors are mounted directly onto the outside of the steel
  7 KB (1,106 words) - 11:57, 30 September 2020
• Sediment sluicing
  ...es.png|thumb|250px|Figure 2: Seasonal operation of Three Georges reservoir for sluicing.]] ...flood and high-flow periods. Reservoir sluicing is not a measure designed for ecosystems living in regulated rivers. However, the supply of sediments ind
  5 KB (786 words) - 10:01, 26 October 2020
• Minimizing sediment arrival to reservoir
  ...nic eruptions) might affect significantly physical conditions and habitats for fish. Extreme sediments levels can also occur in rivers where hydropower re ...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
• Bottom-type intakes (Coanda screen, Lepine water intake, etc)
  ...ap). In that case, fish must be directed to a fish counter or storage pool for manual counting. Physical implementation of a Coanda screen requires heavy machinery suited for the river size and its surrounding terrain, such as excavators and lorries.
  5 KB (823 words) - 10:00, 26 October 2020
• Classification table
  ...lassification tables used for the various [[:category:solutions|mitigation measures]] | Fish species for the measure
  2 KB (328 words) - 13:10, 26 October 2020
• Off-channel reservoir storage
  Dams act as a barrier for sediment transport in river systems. Sediments-laden inflows bring sediment Off-channel reservoirs, like sediment bypasses, are measures which aim at routing bed-load and part of the suspended sediment load throu
  4 KB (563 words) - 10:03, 26 October 2020
• By-passing sediments
  Dams act as a barrier for sediment transport in river systems. Sediment-laden inflows transport sedim ...th concrete or hard natural stone materials such a sgranit are recommended for the invert protection of the sediment bypass tunnels (Müller-Hagmann et al
  6 KB (838 words) - 10:03, 26 October 2020
• Drawdown reservoir flushing
  Dams act as a barrier for sediment transport in river systems. Sediments-laden inflows transport sedi ...part of the capacity storage has been recovered. The favourable conditions for flushing are: reservoirs located in narrow valleys with steep slides, steep
  7 KB (1,127 words) - 10:03, 26 October 2020
• Mechanical removal of fine sediments (dredging)
  ...to the river bank and adapted movements around the removal site are simple measures to integrate to the overall planning of fine sediments dredging. The equipment for sediment removal is a pump. The capacity of the pump is determined by the a
  2 KB (373 words) - 10:03, 26 October 2020
• Sediment simulation in intakes with Multiblock option (SSIIM)
  =Relevant mitigation measures and test cases= {{Suitable measures for Sediment simulation in intakes with Multiblock option (SSIIM)}}
  3 KB (502 words) - 14:23, 1 June 2020