River Högvadsån – 2018

Study type: Acoustic
Listening stations deployed: 10
Tagged smolts: 37
Succeeded: 12

Survival rates (%)
Overall survival = Number of survivors / Total number of released fish * 100
Section survival = Fish that reached the end of the section / Fish that entered the section * 100

Study area
Red dots represent listening stations
Red flags represent release sites

River Göta Älv – 2018

Study type: Acoustic
Listening stations deployed: 16
Tagged smolts: 71 (24 wild & 47 hatchery)
Succeeded: 18 (7 wild & 11 hatchery)

Survival rates (%) 
Overall survival = Number of survivors / Total number of released fish * 100
Section survival = Fish that reached the end of the section / Fish that entered the section * 100

Study area
Red dots represent listening stations
Red flags represent release sites

River Minho – 2018

Study type: Acoustic
Listening stations deployed: 13
Tagged smolts: 70 (22 wild & 48 hatchery)
Succeeded: 21 (8 wild & 13 hatchery)

Survival rates (%) 
Overall survival = Number of survivors / Total number of released fish * 100
Section survival = Fish that reached the end of the section / Fish that entered the section * 100

Study area
Red dots represent listening stations
Red flags represent release sites

River Bush – 2018

Acoustic study

Study type: Acoustic
Listening stations deployed: 11
Tagged smolts: 100 (50 wild & 50 hatchery)
Succeeded: 25 (13 wild & 12 hatchery)

Survival rates (%) 
Overall survival = Number of survivors / Total number of released fish * 100
Section survival = Fish that reached the end of the section / Fish that entered the section * 100

Study area
Red dots represent listening stations
Red flags represent release sites

Radio Study

Study type: Radio
Listening stations deployed: 1
(complemented with manual tracking)
Tagged smolts: 34
Succeeded: 24

Survival rates (%)
Overall survival = Number of survivors / Total number of released fish * 100
Section survival = Fish that reached the end of the section / Fish that entered the section * 100

Study area
Red dots represent listening stations
Red flags represent release sites

River Erriff – 2018

Accoustic Study

Study type: Acoustic
Listening stations deployed: 13
Tagged smolts: 70 (35 wild & 35 hatchery)
Succeeded: 43 (17 wild & 26 hatchery)

Survival rates (%)
Overall survival = Number of survivors / Total number of released fish * 100 <br> Section survival = Fish that reached the end of the section / Fish that entered the section * 100

Study area
Red dots represent listening stations
Red flags represent release sites

Radio study

Study type: Radio
Listening stations deployed: 4
(complemented with manual tracking)
Tagged smolts: 30
Succeeded: 7

Survival rates (%)
Overall survival = Number of survivors / Total number of released fish * 100 <br> Section survival = Fish that reached the end of the section / Fish that entered the section * 100

Study area
Red dots represent listening stations
Red flags represent release sites

River Taff – 2018

Study type: Acoustic
Listening stations deployed: 20
Tagged smolts: 94
Succeeded: 57

Survival rates (%) 
Overall survival = Number of survivors / Total number of released fish * 100
Section survival = Fish that reached the end of the section / Fish that entered the section * 100

Study area
Red dots represent listening stations
Red flags represent release sites