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Salmon counts at the Big Bar landslide site

The following table highlights fish movement below and above the Big Bar landslide site in 2021, including the number of fish transported using assisted fish passage systems. Two types of monitoring methods are used to track fish passage at Big Bar – hydroacoustic sonars and radio tagging. More information about these methods is available here.

Data is updated Monday through Friday, on a 24-hour delay. Weekend data is reported on the following Monday.

A number of factors can impact migration timing, including flow levels, water temperature and weather. In 2021, migration timing is expected to vary greatly during periods of moderate and high flows.

To minimize handling and risk to fish health, “trap and transport” operations will occur when fish are unable to migrate past the barrier on their own. Mechanical issues, site safety and road conditions may also impact operations.

Date Number of salmon radio tagged below the Big Bar landslide siteFootnote 1 Number of salmon transported by truck past the slide site and released upstream Number of fish 40 km upstream of Big Bar landslide siteFootnote 2
Chinook Sockeye
2021-06-01 0 - - 0
2021-06-02 0 - - 0
2021-06-03 0 - - 0
2021-06-04 0 - - 0
2021-06-05 0 - - 0
2021-06-06 0 - - 0
2021-06-07 0 - - 0
2021-06-08 0 - - 0
2021-06-09 0 - - 0
2021-06-10 0 - - 0
2021-06-11 0 - - 6
2021-06-12 1 - - 0
2021-06-13 0 - - 12
2021-06-14 0 - - 24
2021-06-15 2 - - 25.5
2021-06-16 0 - - 15
2021-06-17 0 - - 22.5
2021-06-18 0 - - 6
2021-06-19 0 - - 12
2021-06-20 0 - - 3
2021-06-21 11 - - 0
2021-06-22 11 - - 27
2021-06-23 8 11 - 12
2021-06-24 14 - - 45
2021-06-25 6 - - 30
2021-06-26 0 - - 30
2021-06-27 0 4 - 48
2021-06-28 9 - - 36
2021-06-29 0 - - 33
2021-06-30 1 - - 30
2021-07-01 - - - 27
2021-07-02 - - - -
2021-07-03 - - - -
2021-07-04 - - - -
2021-07-05 8 - - 0
2021-07-06 36 - - 15
2021-07-07 23 - - 30
2021-07-08 13 - - 105
2021-07-09 33 - - 162
2021-07-10 9 - - 201
2021-07-11 13 - - 306
2021-07-12 13 - - 480
2021-07-13 14 - - 636
2021-07-14 14 - - 843
2021-07-15 44 - - 1,611
2021-07-16 18 - - 3,813
2021-07-17 4 - - 14,175
2021-07-18 9 - - 17,061
2021-07-19 25 - - 9,405
2021-07-20 16 - - 6,270
2021-07-21 12 - - 6,309
2021-07-22 27 - - 5,040
2021-07-23 7 - - 4,632
2021-07-24 - - - 4,224
2021-07-25 - - - 3,396
2021-07-26 18 - - 2,439
2021-07-27 20 - - 1,665
2021-07-28 30 3 22 1,902
2021-07-29 12 1 14 2,238
2021-07-30 0 - - 2,712
2021-07-31 0 - - 3,189
2021-08-01 0 - - 2,652
2021-08-02 0 - - 2,346
2021-08-03 0 - - 2,808
2021-08-04 0 - - 2,934
2021-08-05 0 - - 2,325
2021-08-06 0 - - 2,824
2021-08-07 14 - - 2,680
2021-08-08 0 - - 2,604
2021-08-09 33 - - 3,049
2021-08-10 9 - - 3,069
2021-08-11 0 - - 3,297
2021-08-12 0 - - 6,801
2021-08-13 0 - - 10,677
2021-08-14 0 - - 17,295
2021-08-15 0 - - 25,340
2021-08-16 20 - - 16,250
2021-08-17 25 - - 18,342
2021-08-18 30 - - 19,918
2021-08-19 25 - - 18,834
2021-08-20 21 - - 16,842
2021-08-21 0 - - 34,497
2021-08-22 0 - - 41,277
2021-08-23 22 - - 46,551
2021-08-24 14 - - 65,934
2021-08-25 61 - - 84,849
2021-08-26 41 - - 70,854
2021-08-27 20 - - 61,834
2021-08-28 0 - - 69,813
2021-08-29 0 - - 64,707
2021-08-30 19 - - 81,464
2021-08-31 2 - - 82,363
2021-09-01 56 - - 108,727
2021-09-02 0 - - 82,959
2021-09-03 2 - - 83,184
2021-09-04 0 - - 118,226
2021-09-05 0 - - 83,268
2021-09-06 0 - - 57,024
2021-09-07 20 - - 51,042
2021-09-08 13 - - 32,526
2021-09-09 10 - - 25,326
2021-09-10 16 - - 22,794
2021-09-11 0 - - 25,014
2021-09-12 0 - - 24,846
2021-09-13 11 - - 24,150
2021-09-14 14 - - 23,346
2021-09-15 13 - - 25,440
Total 1,016 19 36 1,740,765
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