Property:Level of certainty in effect

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Usage38

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 +

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