Table 3

Number of smolts and transfer rates between stations in 2017 and 2018. The results are provided for all tagged fish (global) and depending on the local conditions (reservoir level and river flow) when smolts entered in the Poutès reservoir.

    Release site Station 1 Station 2 Station 3 Station 4 Station 5
Number of smolts (transfer rate%) Global
2017 54 (/) 34 (63%) 33 (97%) 32 (97%) 20 (63%) 15 (75%)
2018 70 (/) 67 (96%) / 65 (97%) 43 (66%) 28 (65%)
Low reservoir level
2017   14 (/) 14 (100%) 14 (100%) 7 (50%) 4 (57%)
2018   57 (/) / 55 (95%) 38 (69%) 25 (66%)
Low reservoir level and river flow ≤ 30 m3 s−1
2017   6 (/) 6 (100%) 6 (100%) 3 (60%*) 2 (67%)
2018   36 (/) / 33 (92%) 23 (70%) 15 (65%)
High reservoir level
2017   20 (/) 19 (95%) 18 (100%) 13 (72%) 11 (85%)
2018   10 (/) / 10 (100%) 5 (50%) 3 (60%)
High reservoir level and river flow ≤ 30 m3 s−1
2017   20 (/) 19 (95%) 18 (100%) 13 (72%) 11 (85%)
2018   2 (/) / 2 (100%) 0 (0%) /

* One smolt was detected in station 3 but did not approach the dam.

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