Table 1

Characteristics of the Berneau (FW1-B), Lorcé (FW2-A) and Grosses-Battes (FW3-O) fishways.

Characteristics Berneau
(FW1-B)
Lorcé
(FW2-A)
Grosse-Battes
(FW3-O)
Fishway type Pool type, vertical slot Pool type, vertical slot Pool type, vertical slot
Construction year 2002 2007 2009
Period of monitoring October 2002–October 2008 October 2007–October 2015 September 2009–September 2012
Delta height of dam (m) 1.4 3.3 4
Attraction flow (m3/s) 1.5
Total length of fishway (m) 16 67 73
Number of pools 4 15 16
Pool size of fishway (m) 4.2–3 long × 3–1.8 wide 2.8–5.2 long × 2.7 wide 3.5–5.6 long × 2 wide
Height between pools (m) 0.3 0.25 0.25
Water depth of slot (m) 0.7 1 1.2
Slot width (m) 0.2 0.25 0.3

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