Pool-Type Fishway Design for a Potamodromous Cyprinid in the Iberian Peninsula: The Iberian Barbel—Synthesis and Future Directions

Silva, Ana T.; Bermúdez, María; Santos, José Maria; Rabuñal, Juan R.; Puertas, Jerónimo

doi:10.3390/su12083387

Cited by 11 publications

(10 citation statements)

References 89 publications

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“…In contrast, the pools that were greater than 4 m in length provided 100% fish passage suitability under all water level conditions (Table 3). This result is supported by the literature, which suggests that pool length is the primary geometric dimension that influences flow throughout both conventional and nature-like fishways [39,41,42].…”

Section: Distance Between Vrwssupporting

confidence: 81%

“…For example, low cross-sectional velocities (i.e., 0.02 m/s) were measured at pools in Weslie Creek and most likely facilitate fish habitat and refuge; however, the sustained swim speeds for local small-bodied fish species are unknown. Since sustained swim speeds are slower than burst swim speeds, such that fish can maintain that speed for a longer time before fatigue, it is likely that such low cross-sectional velocity values support local fish habitat and/or refuge conditions [13,41].…”

Section: Distance Between Vrwsmentioning

confidence: 99%

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Balancing Physical Channel Stability and Aquatic Ecological Function through River Restoration

Mielhausen

Cockburn

Villard³

et al. 2023

Water

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Vortex rock weirs (VRW) are often used in natural channel design applications to maintain channel form and function, provide physical channel stability, and enhance aquatic habitats. A balanced approach is required to address (often) conflicting goals of VRWs, which include providing erosion protection and grade control while facilitating fish passage for target species. This research evaluated a sequence of modified VRWs in a small-scale watercourse in Southern Ontario, Canada. To determine passage suitability for the target fish species, the water level, water temperature, and channel geometries at 10 VRWs and 11 adjacent pools were monitored under different water level conditions. The structural dimensions and velocity at each VRW were compared to the burst swim speed of local small-bodied fish species to determine fish passage suitability and identify the best practices for VRW design and construction. The results concluded that VRWs provided suitable passage for small-bodied fish species through gap and over-weir flow pathways, particularly during low water level conditions. Further, appropriate design considerations based on the VRW gradient, VRW width, keystone size, and pool length contributed to 100% fish ‘passability’ under all water level conditions. The methodology is provided for predicting the velocity and small-bodied fish passage suitability through VRWs, informing the best practices for VRW design and construction while balancing the requirements for channel stability and fish passage, and contributing to fish population management strategies.

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Section: Distance Between Vrwssupporting

confidence: 81%

Section: Distance Between Vrwsmentioning

confidence: 99%

Balancing Physical Channel Stability and Aquatic Ecological Function through River Restoration

Mielhausen

Cockburn

Villard³

et al. 2023

Water

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show abstract

“…The zones complimentary to the jet zones act as recirculation zones where the species rest amid the migration for a few minutes to several days (DVWK, 2002; Haro et al, 2008; Silva et al, 2020; Baharvand and Lashkar-Ara, 2021). With an increase in b r , the volume of low-velocity regions reduces.…”

Section: Resultsmentioning

confidence: 99%

“…The EDF is analyzed as a function of TKE and Q for all weir opening ratios. Generally, for a pool-weir type fishway, the pool volume is considered below the crest elevation and not the flow volume (DVWK, 2002; Silva et al, 2020). A similar methodology is applied here, neglecting the passage volume ( h 0 * b r * B * L p ) from the total pool volume.…”

Section: Resultsmentioning

confidence: 99%

Experimental and numerical investigation on the hydraulic design criteria for a step-pool nature-like fishway

Kalathil

Chandra

2023

Progress in Physical Geography: Earth and Environment

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Hydraulic considerations specific for the design of step-pool nature-like fishways (NLFs) are limited to the body dimensions of the target species. Additional hydraulic criteria for flow depth, maximum values for each of pool depth, velocity, and turbulent kinetic energy in terms of the weir opening width and discharge can help design an optimum step-pool NLF. The present study developed design charts and rating curves based on numerical modeling using the computational fluid dynamics software FLOW-3D® HYDRO. Instantaneous velocity measurements on a 1:4 scaled physical model of a step-pool nature-like fishway designed as per the available design guidelines have been used to validate the numerical model. The hydrodynamics of the fishway with respect to the weir opening ratio b r (0.10, 0.25, 0.45, 0.65, and 1.00) and discharge Q (0.1–1.5 m3/s) was analyzed through numerical simulations on a prototype scale. The simulation results showed that the maximum flow velocity and the averaged velocity over the crest at b r = 0.10 and 0.25 are considerably lower than at b r > 0.25. The maximum turbulent kinetic energy and energy dissipation factors for the tested range of discharges were within recommended limits for b r = 0.10 and 0.25. The present study outcome in terms of the design charts and rating curves that illustrate the relationship between different variables can be used for an optimum design and ease in field implementation. In addition, the bed structure of the step-pool NLF presented in this study can be used to recreate full-scale or pilot models.

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“…V raziskavi smo se osredotočili na tehnični tip ribje steze z vertikalnimi režami, kar se je v več primerih izkazalo za zelo primerno rešitev nadomestne prehodnosti za ribe (Bermúdez et al, 2010;Marriner et al, 2016;Puertas et al, 2012;Rodriguez et al, 2006;Silva et al, 2020). Za ribje steze z vertikalnimi režami je značilno, da so zgrajene kot betonski kanal z vzdolžnim padcem I0, z vertikalnimi stenami (rebri) pa je kanal razdeljen na več prekatov.…”

Section: Uvodunclassified

Mathematical modeling of flow in vertical slot fishways

Bombač¹,

Rak

Novak

2020

Acta Hydrotechnica

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River dams interrupt essential migration routes of fish and other aquatic organisms. One of the most important mitigation measures that enable aquatic fauna to migrate, especially during spawning, are fishways. The paper presents all the main results of the numerical model PCFLOW2D, which proved to be a useful tool in designing a vertical slot fishway (VSF). The presented analysis includes the quantification of the effect of various numerical and geometrical parameters. Extensive field measurements of flow characteristics in the operating fishway at the hydro power plant Arto-Blanca, which are employed for the model's validation, are discussed as well. The results of simulations for various longitudinal slopes of the VSF are presented. In addition to maximum flow velocities and discharge, other important hydraulic parameters affecting fishway efficiency were analyzed, such as velocity field and distribution of turbulent kinetic energy dissipation.

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Pool-Type Fishway Design for a Potamodromous Cyprinid in the Iberian Peninsula: The Iberian Barbel—Synthesis and Future Directions

Cited by 11 publications

References 89 publications

Balancing Physical Channel Stability and Aquatic Ecological Function through River Restoration

Balancing Physical Channel Stability and Aquatic Ecological Function through River Restoration

Experimental and numerical investigation on the hydraulic design criteria for a step-pool nature-like fishway

Mathematical modeling of flow in vertical slot fishways

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