Engineering Commons^™

Session D7: Fishway With Two Entrance Locations: Understanding Its Importance For Iberian Barbel, Francisco J. Bravo-Córdoba, Francisco J. Sanz-Ronda, Juan F. Fuentes-Pérez, Jorge R. Legazpi, Victor M. Salgado-González, Ana G. Vega, Jorge V. Castro, Alberto P. Garrido

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract

In recent years, in the Iberian Peninsula, many fish passes have been built and improved. To ensure the proper operation of these, it is essential to carry out an evaluation and subsequent monitoring, considering both biologic and hydraulic aspects. We analyze the performance of Iberian barbel –Luciobarbus bocagei (Steindachner, 1864)– in a technical fishway: pool and weir, with bottom orifice. It is located in the Josefina hydropower plant (Duero River, Valladolid, Spain). Fish ladder has two fish entrances: one in the turbine outlet channel and another in the natural river course. Both the most relevant hydraulic values (flow, velocity, …

Session B7: Current Information Needs For Effective Fish Passage Management: Prioritization And Recent Developments, Leo Nagelkerke, Jóhannes Sturlaugsson

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Migratory fish species form an essential part of the ecological quality of surface waters. The strong human influence on many water bodies in Europe has had detrimental effects on populations of migratory fish species, which have declined or even disappeared in many cases. Measures to restore migration often have, until now, a strong ad hoc character. Therefore there is need for a profound, integrative scientific approach, leading to a framework for analysing migration and the design of effective measures. We will present an agenda for the exchange and integration of knowledge among scientists and experts and for the development …

Session A7: Use Of Telemetry For Fish Ecological Survey In Europe, Beate Adam

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

In contrast to the US, Canada, and Scandinavian Countries there are few and infrequent ecological studies on fish conducted in Europe which use telemetry systems such as hydro-acoustic, radio, or PIT technology. The reason for the infrequent use of these technologies is mostly the high cost of the equipment and lack of experienced staff to operate it. Within the framework of this introductory talk there will be an exemplary selection of recently conducted telemetry studies in Europe that demonstrate the application possibilities of these technologies and resultant findings. Due to the amended European Animal Welfare Act (2014) there exist …

Concurrent Sessions B7: Fitfish: Current Information Needs For Effective Fish Passage Management, Leo Nagelkerke, Jóhannes Sturlaugsson

International Conference on Engineering and Ecohydrology for Fish Passage

No abstract provided.

Plenary Speaker: How To Master The Art Of Building Functional Fish Way, Beate Adam

International Conference on Engineering and Ecohydrology for Fish Passage

No abstract provided.

Plenary Speaker: Conciliating Fish Ecology And River Fragmentation In South American Large Rivers: Are Fish Passages Appropriate Tools?, Claudio Baigún

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract: South America, the most fluvial continent, is increasingly been impacted by river damming having dams construction expanded in last 50 years and fragmenting more than 3,000 km. At present, the upper Parana basin exhibits 130 dams higher than 10 m, but most of future planned dams will be located along the Amazon watershed. Although increasing attention and research efforts have been devoted to assess functioning of fish passage in South America, objectives and support for installation can differ among basins according to river ecological characteristics, conservation goals, fisheries demands, etc. A noticeable asymmetry still exists between salmonids and non-salmonids …

Session B6: Hydraulic Research On Fish Passage Design At Lock & Weir Sites, Klaas Pieter Visser, Peter Viaene

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Both European and Belgian legislations aim at restoring and enhancing the ecological strength of the water systems. Besides improvement of water quality and protection through legislation, restoration of free fish migration on the rivers and main waterways. To solve the problem of the disruption of longitudinal habitat connectivity by manmade obstacles such as locks and weirs, fish passages are constructed. In close cooperation with the Institute for Nature and Forest Research (INBO) of the Flemish Government (hydraulic) research on fish passage design at weir-lock sites on Flemish rivers has been done since 1995 at Flanders Hydraulic Research (FHR). The …

Session A6: Timing, Frequency And Environmental Conditions Associated With Mainstem-Tributary Movement By A Lowland River Fish, Golden Perch, Wayne Koster, David Dawson

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Tributary and mainstem connections represent important corridors for the movement of fish and other biota throughout river networks. We investigated the timing, frequency and environmental conditions associated with movements by adult golden perch (Macquaria ambigua) between the mainstem of the mid-Murray River and a tributary, the Goulburn River, in southeastern Australia, using acoustic telemetry over four years. Golden perch moved freely between mainstem and tributary habitats. The results of the study indicate that a spatially and temporally complex relationship between adult golden perch movement, river discharge and water temperature plays a key role in connecting mainstem and tributary populations …

Session D6: French R&D Program On «Eel And Dams» Related To Eu Regulation 1100/2007, Pierre Sagnes, Eric De Oliveira, Philippe Baran, Michel Larinier, Christian Rigaud, François Travade

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The European eel stock collapsed in the 1980’s and is still declining gradually. The main causes of this decline are known: fishing, water and habitat quality, river fragmentation and hydropower plants (HPP) impacts. The European Union (EU) council established a management plan in 2004 and a regulation was initiated (European Regulation CE n°1100/2007) in September 2007 to improve the recovery of the European eel stock. To reach restoration goals, France is engaged in a management plan to act on each of the factors suspected to cause the decline of the species. Concerning the effects of river fragmentation and HPP, …

Session B6: Hydraulic Design Of An Innovative Baffle-Brush Type Fish Pass, Serhat Kucukali, Reinhard Hassinger, Werapol Bejranonda

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The flow characteristics (depth, velocity, energy dissipation) of a new baffle-brush type fish pass were investigated experimentally in a 2 m wide rectangular flume which has a bed slope of 4% for discharges ranging between100-550 L/s. In all experiments quasi-uniform and subcritical flow conditions, Froude number ranging between 0.17-0.23, were observed. The Darcy-Weisbach friction factor was negatively correlated with the relative submergence of the baffle. The turbulence intensities were ranged between %38-79 in the baffle zone and %13-31 in the brush zone. The hydraulic test results showed that this type of fish pass can produce adequate flow depth and …

Session D6: Management And Research-Integrated Swedish Work On Best Available Techniques, Niklas Egriell

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The presentation will give a view of the Swedish integrated work on finding the best available technique due to fish passages. This process includes a dialogue between managers, researchers and companies. The aim is to find the best techniques world wide and produce guidelines that can be used by companies, authorities and others in Sweden and maybe other countries (Norway is represented in the reference-group), working on developing the hydropower in an environmentally good manner. The presentation will give a wide brief of the difficulties and solutions due to legal requirements and implementations, targets on passage efficiency, prioritization etc.

Session D6: The Fish Migration Strategy On The Border Rivers Morava And Dyje – International Cooperation, David Veselý

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The Morava River and the Thaya River forms the permeating axis of the Danube migrant fish species on the territory of the Czech Republic. Both rivers are a significant European migration routes. For this reason, these rivers are subject of intensive investment activities, conceptual studies and strategic migration plans. In both cases, these are border rivers, so there also takes place intensive cross-border international cooperation. There will be described the whole range of ongoing activities in our oral presentation. Then we will focused on detail of the project of ensuring migration of fish on the Thaya River in the …

Session C6: Does Yellow Eel Prefer Old Pool And Weir Or New Vertical Slot Fish Pass During Their Upstream Migration?, Billy N. Matondo, Armaud Dierckx, Jean-Philippe Benitez, Michael Ovidio

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The hydroelectric dam of Lixhe in the River Meuse, 323km upstream from the North Sea at the entry of Belgium near the frontier with the Netherlands is equipped with two basin fish-passes: – the old pool-and-weir configuration (OFP) operates at low discharge (0.13m3/s) and – the new vertical-slot configuration (NFP) operating at high discharge (1m3/s) with attraction flow (1.5m3/s). However, the utilization rate of these fish-passes by the incoming yellow eels remains unknown, because the trap of NFP is not adapted to retain anguillids and small species. Yet, such knowledge is crucial to improve the inland colonization of the …

Session B6: The Baffle-Brush-Fishpass - A New Concept For Non-Selective Fishpasses, Reinhard Hassinger, Werapol Bejranonda

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The baffle-brush-fishway combines the properties of a superactive baffle (Larinier) fishpass with the features of the brush-furnished fishway. Both types mark the extremes of the hydraulic spectrum in fishpasses. The baffle fishway exposes a high turbulence flow with a mean velocity around 1,1 m/s while the brush-type fishway provides a multiple-structured migration corridor with low velocities. A transition zone provides a continuous crossover of flow properties. Thus, any fish can choose a migration corridor which meats it's demands and abilities. The presentation explains the main features of this type and adresses basic hydraulic calculations such as rating curve, friction …

Session D6: Fishway Offsets: Significant Opportunities Challenged By Management Realities, Matthew Gordos

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Water NSW is the primary bulk water supplier in New South Wales, Australia, managing water resources through the operation of over 300 dams, weirs and regulators. In the early 2000’s, dam safety upgrade works were identified at five (5) large dams owned by Water NSW’s to bring them in line with contemporary best practice. The dam safety upgrade works triggered the requirement for Water NSW to construct fishways at the dams under the NSW Fisheries Management Act 1994. Following the development of concept designs and costings for Keepit Dam, Water NSW estimated in 2009 that high level fishways at …

Session B6: Seeking Better Fishways: The Pump Fishway Program, John Harris, Bill Peirson, Lee Baumgartner, Brent Mefford, Richard Kingsford

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

A surprising hiatus affects fish research and management. Those of us working in fish passage strive to move fish past barriers. Aquaculturists, on the other hand, move fish around fish farms safely and effectively. Marrying these two approaches presents an exciting opportunity for fishway development. Millions of fish-passage barriers remain in rivers globally, together with many under-performing and costly fishway investments, resulting in declining biodiversity and production of freshwater fish. Better approaches to fishway design are urgently needed to aid in halting this worldwide loss of connectivity.

Multidisciplinary work at UNSW Australia aims to refine and test a pump …

Session E6: Monitoring Strategy Of Sturgeon Behaviour To Ensure Functionality Of Future Fish Passes: The Iron Gate Ii Case In The Danube River, Radu Suciu, Mirjana Lenhardt, Finn Økland, Iulian Nichersu, Dalia Onara, Stefan Honţ, Marian Paraschiv, Daniela Holostenco, Cristian Trifanov, Marian Iani

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Preliminary study on sturgeon behaviour funded by the Dutch Partners for Water Programme and the ICPDR Secretariat (2014) has proven that beluga and stellate sturgeons still arrive at Iron Gate 2 dams (Danube R Km 862.8). High water current and impossibility to access Serbian reach of the Danube in the tailrace of Iron Gate 2 HEP (330 m wide) has prevented us from conducting triangulation with the mobile receiver to detect position of the sites where the beluga sturgeon male tended to congregate.

The preparatory project funded by the European Investment Bank Luxemburg (2014 - 2015) has adopted a …

Session A6: Five Years Monitoring Of The Original "Stairs Pipe" Fish Pass Assess The Complete Reconnection And Natural Function Of A Nursery Tributary For Its Main River, Etienne Dupont

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The sedentary trout population dynamic of a main river and its tributary has been studied in the Ardenne (Belgium) for more than fifty five years. It shows a population division between the nursery brook dominated by the juveniles and the river by the adults. Every winter, several hundreds of spawners migrate to the brook to reproduce and when the offspring fingerlings are 1 or 2 years old, they swim down to the river for a quicker growth. This ensures the river population sustainability.

Close to this well documented system, another one is disturbed by an obstacle preventing any spawning …

Session C5: Behavioural Patterns Of Migrating Silver Eel At A Hydro Power Station In The River Meuse, Ben Griffioen, Olvin Van Van Keeken, Eriwn Winter

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

In order to provide efficient downstream passage for migrating silver eel and to reduce mortality or obstruction rates at barriers, a better understanding of behavioural patterns for migrating silver eels is necessary. To study behavioural patterns of downstream migrating silver eels which are confronted with a hydropower station – weir – ship lock complex in the river Meuse a telemetry experiment was performed. This study used four detection stations (NedapTrail-System®) covering the river bed, two stations up and downstream the HPS, two stations up and downstream the weir and two stations in separated fishways. In all, 148 silver eels …

Session D5: Using A Waterfall System As A Natural Laboratory To Inform The Design Of Fish Passes In The Mekong, Eric Baran, Tuantong Jutagate, Tarek Ketelsen, Oudom Phonekhampheng, Phouvin Phousavanh, Samadee Saray, Peter Ward, John Williams

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The Mekong Basin features 103 long distance migratory fish species contributing 800,000 tonnes per year to the regional inland fishery. At Khone Falls in southern Laos, the Mekong River splits into multiple channels and flows through numerous waterfalls that constitute a major obstacle to fish migrations across the basin. We present here the approach and methodology of a new research project using the Khone Falls bottleneck as a natural laboratory to inform the design of fish passes in the Mekong. This project is based on systematic gathering of local ecological knowledge, combined with hydrological measurements and river geomorphological characterization …

Session C5: Experiments To Improve Passage Ways For Downstream Migrating Silver Eel, Arne Fjälling, Håkan Wickström, Willem Dekker, Christer Blomqvist

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

A trial was conducted with passage ways for migrating silver eel at a low head weir in a tributary to River Mörrumsån in Sweden. Behavioral traits useful for maximizing the number of eel per volume of water were sought. Six openings were made in the weir and supplied with various set-ups. One of the openings, a plain hole, served as a control. A second opening had significantly more eel passing than the control (11 versus 2; p<0.05). This setup (U-chute) had a raceway extending 7m upstream of the weir. Inflow of water (and eel) took place through vertical slots on the side. Further development of this model is advocated. Two other set-ups had about the same number of eel passing (4 and 2) as the control. The first was a nature like bypass. The other, the M-chute, had a submerged raceway extending 7m upstream. Inflow took place over the sides. The last two set-ups had no eel passing through or entering, and very few eel were observed near. The first was a dead end (no water flow) and the second had a flow of water coming out of the entrance. A separate trial, involving silver eel and modified water quality, was carried out at the aquarium experimental facility at Ar, Sweden. Eel, kept in 4m² experimental fresh water fish tanks, were offered two narrow escape ways. One opening had an inflow of brackish water, the other opening had an inflow of fresh water. Significantly more eel passed out through the opening with brackish water than the opening with fresh water (21 versus 8; p<0.05). This effect was however not deemed strong enough for attracting eel to passages. It is argued there is a need for better knowledge of silver eel migration behavior during the descent to the sea.

Session A5: Dam Removal: Enhancing Or Degrading Ecological Integrity?, Birgitta Malm Renöfält, Anna Lejon, Christer Nilsson, Micael Jonsson

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Removal of dams is increasingly being used to restore fragmented rivers and streams. The incentive is often to give migrating fish access to upstream spawning habitats, but dam removal may also bring other benefits, such as recovery of riparian vegetation and a more heterogeneous environment for aquatic invertebrates. Dam removal may also act as a disturbance on the system, releasing trapped sediments to downstream reaches. Depending on the amount of sediments in the former reservoir this disturbance may be transient or act over a longer time period. Whether dam removal is beneficial or not to the ecosystem may therefore …

Session B5: The Danube Fish Bypass System Of Vienna/Freudenau And Its Importance As A Lifecycle Habitat, Paul Meulenbroek, Silke-Silvia Drexler, Pablo Rauch, Michael Geistler, Herwig Waidbacher

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

For the fish bypass at the Danubehydropower station Wien/Freudenau the functioning as migration facility has been classified as functional after construction in 1997. The importance of habitat support for the lifecycles of Danube fish species becomes clearly visible in times when degraded, impounded, current speed reduced section of the river are dominating the fluvial ecosystem. Central parts of impounded areas are not supporting all the needs of riverine fish: Gravel-spawning grounds, suitable flow velocity and diverse 0+ fish habitats are missing. Upper most part of impoundments, tributaries and artificial rivers, like fish bypass systems, can function as essentially needed …

Session A5: A Dam Removal In Robledo De Chavela (Madrid, Spain) And River Restoration, Lidia Arenillas Girola

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The Robledo de Chavela dam removal can be considered a milestone in river restoration as, due to its 23 meters high, is the highest dam ever demolished in Spain and probably in all Europe. The dam was located in Cofio river (belonging to Tajo river basin), 70 km northwest from Madrid. It was built for supplying purposes during the early sixties, but few years later it became unusable, due to water quality problems caused by livestock discharges from upstream.

On June 8th, 2012, the Tajo River Basin Authority (Confederación Hidrográfica del Tajo, CHT) detected a water leak from the …

Session E5: What Should We Know About Behavior Of Sturgeons To Provide Their Efficient Passage?, Dmitrii Pavlov, Victor Mikheev, Mikhail Skorobogatov

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

To provide passage of migrating sturgeons through dams, we have, first of all, to monitor and control their behavior in the water flow. To achieve this, we have to know following behavioral and ecological traits such as: rheoreaction, threshold and critical swimming velocity, swimming endurance, behavior in the flow velocity gradient, diel and seasonal patterns of spawning migrations, and vertical and horizontal distribution of migrating sturgeons. Such information is needed to determine optimum flow velocities attracting fish to the entrance of a fish pass (FP), FP operation regime, duration of attraction of migrants, location of the entrance to FP …

Session B5: Efficiency Of A Nature-Like Bypass Channel At Rodley Weir, River Aire, Jamie R. Dodd, Richard A.A. Noble, Kathryn Turner, Ian G. Cowx, Jon D. Bolland

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Man-made physical barriers (weirs) have disrupted longitudinal connectivity in many river systems around the world for centuries. Impacts of weirs on fish communities centers on the reduced ability of fish to perform upstream migrations. To counter the potential effects these structures are having on fish communities, a number of fish pass designs have been developed to ease passage around potential barriers. To monitor the effectiveness of a recently constructed nature like bypass on the River Aire, Passive Integrated Transponder (PIT) systems were installed to observe movements of brown trout (Salmo trutta). The array consists of four swim through antennas, …

Session C5: Downstream Migration Of Silver Eel (Anguilla Anguilla) In The River Meuse In The Netherlands 2008 – 2012, F. Tim Vriese, Harriet Bakker, André Breukelaar

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Downstream migration of European silver eel (Anguilla anguilla) was studied in the Meuse in the Netherlands, in the period 2008-2012. Silver eel (n = 840), with implanted NEDAP transponders, were released at different locations, in the lower part of the Meuse in Belgium (Berwijn at Moelingen) and in the upper part of the Meuse in the Netherlands (Ohé en Laak). Fish were tracked by telemetry at 41 fixed NEDAP Trail detection stations distributed along the Meuse from the confluence with the Berwijn to the North sea, a distance of more than 330 km. Over the period 2008- 2013 75% …

Session D5: Current Status Of Fish Passages In South Korea, Ju-Duk Yoon, Jeong-Hui Kim, Sang-Hyeon Park, Seung-Ho Baek, Jin-Woong Lee, Min-Ho Jang

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Weirs are important for countries that agriculture is the primary industry due to the stable supply of water to agricultural fields. Because agriculture is still important in Korean peninsula, weirs have been constructing until now from small streams to large rivers. However, only limited fish passages were installed in weirs, and there were no managements. As a results, streams and rivers have become highly fragmented, with fish migration being severely impeded. Thus, ministry of agriculture, food and rural affairs investigated entire fish passages in Korea in 2010-2011, and estimated current status and problems. A total of 33,718 weirs were …

Session E5: Improving Fish Migration At The Iron Gates I & Ii Dams, Wilco De Bruijne

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

In the Danube river basin in Romania, 119 priority fish migration barriers were indicated. In the Danube river basin as a whole, the amount of indicated priority barriers reaches 400 – 500 barriers. The Iron Gate dams were prioritized in the ICPDR Danube river basin management plan as ‘utmost priority’.

In 2011, in an assignment for Romania and Serbia (and encouraged by the ICPDR), the FAO conducted a scoping mission to explore general fish migration solutions at the Iron Gates I and II dams. The main conclusion was: provision for migration routes at the Iron Gates dams is technically …

Session B5: 2d Modelling Of Nature-Like Fish Passes, Tien Dung Tran, Ludovic Cassan, Jacques Chorda, Pascale Laurens

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The passability of nature-like fishpass depends on water depth, velocity and kinetic turbulent energy. To estimate these values the 2D Saint Venant code can be an interesting tool because it can simulate a large range of geometrical configuration and also take into account the deformation of the free surface. However the flow in a fish pass can reach the limit of the model assumptions as the hydrostatic pressure. As a consequence a series of experiments on down-scale are conducted to validate the numerical results. Velocity and turbulent fields are measured by Acoustic Doppler Velocimeter (ADV) for five combinations of …