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An innovative solution 2 for fish migration over the discharge sill on Crisul Repede River!
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Dr.eng.environment Răzvan G. VoicuNational Institute of Hydrology and Water Management
Laboratory of Eco-Hydrology, România
Senior Project Manager. Eric L. Kay
International Conference on Engineering and
Ecohydrology for Fish Passage June 9-11,2014
University of Wisconsin -Madison
KAY ASSOCIATES, Comox, BC. CanadaForest and Industrial Road & Water Management Consultants
CASE STUDY
LOCATION
discharge sill
RomâniaCrişul Repede River
OVERVIEWThe paper presents a case study
that proposes practical solutions
for the restoration of longitudinal
connectivity of Crişul Repede
River
In the town of Oradea there are a lot transversal constructions
such as discharge sills and small dams, that stops migration
process of various fish species.
BACKGROUND
Dimension for discharge sill near Ferdinand bridge
h=1,5m-height l= 50m-lengthh1 (water fall )=1m
The Crisul Repede River bed width is 50 m at the discharge sill, it has
25.6 m3/s flow rate and its water speed is 0.4 m/s [Source: ABA Crisuri].
protected by Bern Convention (Appendix III).
The migratory fish species from
the area are:
• Nase (Chondrostoma nasus) -
protected by Bern Convention
(Appendix III).,
• Barbell (Barbus barbus) - Rare species
protected Habitats Directive (Annex V),
annex 4A of Low nr.462 and Red List of
RBDD)
• Freshwater bream (Abramis brama) -
protected by Bern Convention
(Appendix III)
BACKGROUND
discharge sill near Ferdinand bridge
DOWNSTREAM
metal semi-cylinder
discharge sill
metal hinge
resistant rubber canal watercourse
rubber fixing system for the canal
Figure 1 Positioning the metal semi-cylinder – indicative scheme
left bank right bank
resistant rubber canal discharge sill
module M2 module M1 watercourse
bascule for redirecting
fish towards the rubber canal
metal grill
left bank metal grid fence
fish redirecting system (electromagnetic field)
rubber canal
discharge sill
Figure 2 Rubber canal positioning – indicative scheme
l semi-cylinder
resistant rubber canal
Figure 3 Water level in the rubber canal – indicative scheme
metal hinge
metal semi-cylinder
discharge sill
Crişul Repede River
electric motor
or winch
metal bar
metal oval
metal cable
metal oval
mobile bascule or mobile semi-cylinder
mobile semi-cylinder
framework
metal sheet pile - grid
left bank
water level in the rubber canal
Figure 4 Positioning the electric motor – indicative scheme
electric winch (hc-winch.com)
discharge sill
metal fence
metal semi-cylinder
metal cable metal bar rubber canal
metal plate
Crişul Repede River
metal hinge
ConclusionsThe solution, intended for one river bank only, has the advantage of
being used as fish passage system upstream of discharge sill, too.
Another advantage of this system is that they can be dismantled and
stored (during winter) and used in other areas where rivers are
crossed by hydrotechnical works with transversal bars.
The costs for these systems are considered reasonable in contrast
with conventional systems costs.
They can work automatically, as the human intervention is required
only when it comes about supervision.
© Andy Loghin
Thank you!
Vă mulțumesc !
Răzvan G.VOICU, [email protected]@gmail.com
National Institute of Hydrology and Water Management Laboratory of Eco-Hydrology, România
Eric L.KAY, Senior project [email protected]
KAY ASSOCIATES, Comox, BC. CanadaForest and Industrial Road & Water Management Consultants
Vassalboro, Maine (Kennebec County)http://flyfishingonly.net/forum/topic.asp?TOPIC_ID=5967
UPSTREAM SOLUTION
Larinier bottom baffle pass River
Neath, Aberdulais (Source:
Armstrong et al., 2004)
fishtek.co.uk- Fish Pass Design
left bank
discharge sill
concrete ramp
metal dowel concrete bed
metal bracket
indicative scheme
Crişul Repede River
Concrete ramp positioning
Răzvan G.VOICU, dr.eng.environment
l = 4m
discharge sill concrete bed
concrete ramp
H= 2,5 m(thickness)
indicative scheme
h = 3, 8m
L= 5, 52 m Crişul Repede River
h1= 1,4 m
Concrete ramp dimensions
right bank the metal grid 2 left bank
metal stopper
discharge sill
metal and concrete fences
indicative scheme
concrete ramp
crenelated metal rail
metal bars
Metal grids positioning
crenelated metal rail
discharge sill electric motor
concrete ramp metal frame
metal frame electric motor
crenelated metal rail
concrete bed crenelated pinion
indicative scheme
Crişul Repede River
rubber wheel
Crenelated rail positioning inside the concrete ramp
telescopic hydraulic cylinder
crenelated metal rail
concrete bed crenelated pinion
indicative scheme
metal hinge
metal frame
electric motor
metal mobile grid 1 (maximum height)
bearing bearing
Telescopic hydraulic cylinder positioning on the metal frame and on the
metal mobile grid1
vitess-industrial.ro
mobile metal grid 1
metal bar for opening the grid 2
the metal grid 2
metal and concrete fences
concrete platform
indicative scheme
rubber roller
rubber wheel
2 cm
electric motor
Metal frame fastening system
rolling metal bar rubber wheel
metal bar securing the metal frame
rubber wheel
indicative scheme
http://en.wikipedia.org/wiki/Train_(roller_coaster)
Rollers positioning
mobile metal grid 2 – metal spring
concrete platform
crenelated metal rail
30dd
metal bar mobile metal grid 1
discharge sill metal frame
concrete ramp electric motor
metal spring
indicative scheme
Crişul Repede River
30 cm
Minimum and maximum levels of metal mobile grids 1 and 2
mobile metal grid 2 - metal spring
rsc.org
mobile metal grid 1
telescopic hydraulic cylinder
30dd
mobile metal grid 1
discharge sill electric motor
concrete ramp metal frame
indicative scheme
Crişul Repede River
≈ 30 cm
bearing
Metal grid refolding and system returning on horizontal surface
Rack railway
http://www.connectmums.com/wp-
content/uploads/2012/03/Mt-Pilatus-
Rack-Railway-3-540300.jpg
mobile metal grid 1
metal fence concrete fence
mobile metal grid 2
metal spring
metal bar for opening the grid 2 discharge sill
concrete platform
indicative scheme
Concrete platform positioning
The motor contains unsophisticated software to operate all controls.
Power consumption is very low, considering that fish migration does not take place throughout the year and during the winter, when temperatures cause partial freezing of the watercourse, the mobile framework can be detached and stored in a properly place.
The costs for these systems are considered reasonable in contrast with conventional systems costs.
They can work automatically, as the human intervention is required only when it comes about supervision.
Conclusions
