Property:Level of certainty in effect

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Showing 37 pages using this property.
B
Baffle fishways +
Moderately certain  +
Bottom-type intakes (Coanda screen, Lepine water intake, etc) +
Very certain  +
By-passing sediments +
Moderately certain  +
Bypass combined with other solutions +
Moderately certain  +
C
Cleaning of substrate - ripping, ploughing and flushing +
Very certain  +
Complete or partial migration barrier removal +
Moderately certain  +
Construction of a 'river-in-the-river' +
Moderately certain  +
Construction of off-channel habitats +
Moderately certain  +
D
Drawdown reservoir flushing +
Moderately certain  +
E
Environmental design of embankments and erosion protection +
Moderately certain  +
F
Fish guidance structures with narrow bar spacing +
Very certain  +
Fish guidance structures with wide bar spacing +
Very uncertain  +
Fish lifts, screws, locks, and others +
Very uncertain  +
Fish refuge under hydropeaking conditions +
Moderately certain  +
Fish-friendly turbines +
Very certain  +
Fishways for eels and lampreys +
Moderately certain  +
M
Mechanical removal of fine sediments (dredging) +
Very certain  +
Migration barrier removal +
Moderately certain  +
Minimizing sediment arrival to reservoir +
Very certain  +
Mitigating rapid, short-term variations in flow (hydro-peaking operations) +
Very certain  +
Mitigating reduced annual flow and low flow measures +
Very certain  +
Mitigating reduced flood peaks, magnitudes, and frequency +
Moderately certain  +
N
Nature-like fishways +
Moderately certain  +
O
Off-channel reservoir storage +
Moderately certain  +
Operational measures (turbine operations, spillway passage) +
Moderately certain  +
Other types of fine screens +
Very certain  +
P
Placement of dead wood and debris +
Moderately certain  +
Placement of spawning gravel in the river +
Very certain  +
Placement of stones in the river +
Very certain  +
Pool-type fishways +
Moderately certain  +
R
Removal of weirs +
Moderately certain  +
Restoration of the riparian zone vegetation +
Very certain  +
S
Sediment sluicing +
Moderately certain  +
Sensory, behavioural barriers (electricity, light, sound, air-water curtains) +
Very uncertain  +
Skimming walls (fixed or floating) +
Moderately certain  +
T
Truck transport +
Moderately certain  +
V
Vertical slot fishways +
Very certain  +
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