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Salmon counts at the Big Bar landslide site

Note: Monitoring activities for the 2021 Fraser salmon migration season concluded on October 15. In-depth analysis of the large volumes of data collected from the radio telemetry and sonar programs is now underway. The final data results will provide a detailed evaluation of the passage conditions for the stocks that move through the Big Bar area in 2021.

The following table highlights fish movement below and above the Big Bar landslide site in 2021. 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 was updated Monday through Friday, on a 24-hour delay.

A number of factors impacted migration timing, including flow levels, water temperature and weather.


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
2021-09-16 13 - - 24,008
2021-09-17 12 - - 18,267
2021-09-18 0 - - 16,663
2021-09-19 0 - - 16,335
2021-09-20 16 - - 17,493
2021-09-21 15 - - 1,790
2021-09-22 14 - - 12,714
2021-09-23 18 - - 7,242
2021-09-24 5 - - 2,973
2021-09-25 0 - - 429
2021-09-26 0 - - 453
2021-09-27 7 - - 1,065
2021-09-28 1 - - 1,683
2021-09-29 4 - - 1,275
2021-09-30 31 - - 2,973
2021-10-01 0 - - 2,559
2021-10-02 0 - - 2,103
2021-10-03 0 - - 492
2021-10-04 12 - - 399
2021-10-05 14 - - 1,041
2021-10-06 14 - - 972
2021-10-07 10 - - 1,011
2021-10-08 20 - - 1,338
2021-10-09 0 - - 1,113
2021-10-10 0 - - 1,047
2021-10-11 0 - - 1,011
2021-10-12 7 - - 567
2021-10-13 10 - - 459
2021-10-14 5 - - 246
2021-10-15 - - - 267
2021-10-16 - - - 222
2021-10-17 - - - 180
2021-10-18 - - - 84
Total 1,237 19 36 1,917,359
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