Salmon counts at the Big Bar landslide site
Fish passage
Fish passage
Radio tagging and SONAR monitoring activities concluded on October 24, 2020. A thorough post-season evaluation is underway to determine 2020 fish passage data by species.
During the 2020 Fraser salmon migration, two types of monitoring methods were used above and below the Big Bar landslide site to track fish passage – hydroacoustic sonars and radio tagging.
Hydroacoustic monitoring uses sonar technology to count the number of salmon successfully passing through the slide site and track their continued migration. The equipment only counts the number of salmon and, while technicians can delineate between species in most cases, it does not provide data on which stocks are passing by.
Radio tagging involves inserting a tag into a fish’s stomach or attaching it to their back. The radio tag emits a signal that is detected by a shore-based receiver. The monitoring team has installed a network of radio receivers to monitor fish passage through the main stem of the Fraser River and into major spawning streams, including many in the area of the slide. Location data from these tags contributes information towards the passage rate of fish and the survival-to-spawn rate of the stocks.
The table below highlights fish movement at and above the slide site on a daily basis, including the number of fish using alternative passage systems.
Date | Number of salmon radio tagged below the Big Bar landslide site |
Number of salmon using alternative fish passage systems | Number of fish 40 km upstream of Big Bar landslide siteFootnote 1Footnote 2 |
|
---|---|---|---|---|
Truck and transport |
Whooshh Passage Portal™ |
|||
2020-05-26 | 0 | 0 | 0 | 0 |
2020-05-27 | 0 | 0 | 0 | 0 |
2020-05-28 | 0 | 0 | 0 | 0 |
2020-05-29 | 0 | 0 | 0 | 0 |
2020-05-30 | 0 | 0 | 0 | 0 |
2020-05-31 | 0 | 0 | 0 | 0 |
2020-06-01 | 0 | 0 | 0 | 0 |
2020-06-02 | 0 | 0 | 0 | 0 |
2020-06-03 | 0 | 0 | 0 | 0 |
2020-06-04 | 0 | 0 | 0 | 0 |
2020-06-05 | 0 | 0 | 0 | 0 |
2020-06-06 | 0 | 0 | 0 | 0 |
2020-06-07 | 0 | 0 | 0 | 0 |
2020-06-08 | 1 | 0 | 0 | 0 |
2020-06-09 | 4 | 0 | 0 | 0 |
2020-06-10 | 4 | 0 | 0 | 0 |
2020-06-11 | 6 | 0 | 0 | 0 |
2020-06-12 | 6 | 0 | 0 | 0 |
2020-06-13 | 1 | 0 | 0 | 0 |
2020-06-14 | 1 | 0 | 0 | 0 |
2020-06-15 | 5 | 0 | 0 | 0 |
2020-06-16 | 5 | 0 | 0 | 0 |
2020-06-17 | 7 | 0 | 0 | 0 |
2020-06-18 | 4 | 0 | 0 | 0 |
2020-06-19 | 1 | 0 | 0 | 0 |
2020-06-20 | 0 | 0 | 0 | 9 |
2020-06-21 | 0 | 0 | 0 | 9 |
2020-06-22 | 1 | 0 | 0 | 3 |
2020-06-23 | 1 | 0 | 0 | 0 |
2020-06-24 | 0 | 0 | 0 | 0 |
2020-06-25 | 0 | 0 | 0 | 0 |
2020-06-26 | 0 | 0 | 0 | 0 |
2020-06-27 | 0 | 0 | 0 | 0 |
2020-06-28 | 0 | 0 | 0 | 0 |
2020-06-29 | 0 | 0 | 0 | 3 |
2020-06-30 | 0 | 0 | 0 | 0 |
2020-07-01 | 1 | 0 | 0 | 3 |
2020-07-02 | 0 | 0 | 0 | 8 |
2020-07-03 | 0 | 0 | 0 | 0 |
2020-07-04 | 0 | 0 | 0 | 0 |
2020-07-05 | 0 | 0 | 0 | 0 |
2020-07-06 | 0 | 0 | 0 | 0 |
2020-07-07 | 0 | 0 | 0 | 0 |
2020-07-08 | 0 | 0 | 0 | 0 |
2020-07-09 | 3 | 0 | 0 | 12 |
2020-07-10 | 19 | 0 | 0 | 6 |
2020-07-11 | 22 | 0 | 0 | 0 |
2020-07-12 | 26 | 0 | 0 | 0 |
2020-07-13 | 24 | 0 | 0 | 3 |
2020-07-14 | 20 | 0 | 0 | 0 |
2020-07-15 | 20 | 0 | 0 | 6 |
2020-07-16 | 19 | 0 | 0 | 0 |
2020-07-17 | 11 | 0 | 0 | 0 |
2020-07-18 | 0 | 4 | 0 | 0 |
2020-07-19 | 0 | 0 | 0 | 0 |
2020-07-20 | 3 | 0 | 0 | 3 |
2020-07-21 | 4 | 0 | 0 | 0 |
2020-07-22 | 14 | 0 | 0 | 0 |
2020-07-23 | 25 | 0 | 0 | 6 |
2020-07-24 | 7 | 0 | 0 | 3 |
2020-07-25 | 0 | 0 | 0 | 0 |
2020-07-26 | 0 | 32 | 0 | 0 |
2020-07-27 | 5 | 78 | 0 | 18 |
2020-07-28 | 1 | 0 | 314 | 36 |
2020-07-29 | 35 | 0 | 244 | 48 |
2020-07-30 | 1 | 0 | 373 | 33 |
2020-07-31 | 0 | 0 | 813 | 36 |
2020-08-01 | 0 | 0 | 683 | 96 |
2020-08-02 | 0 | 0 | 75 | 237 |
2020-08-03 | 22 | 31 | 17 | 543 |
2020-08-04 | 29 | 281 | 20 | 1,055 |
2020-08-05 | 25 | 235 | 1,232 | 1,359 |
2020-08-06 | 0 | 28 | 282 | 2,502 |
2020-08-07 | 0 | 189 | 339 | 2,705 |
2020-08-08 | 0 | 115 | 0 | 5,072 |
2020-08-09 | 0 | 121 | 135 | 7,005 |
2020-08-10 | 23 | 250 | 609 | 9,828 |
2020-08-11 | 12 | 163 | 602 | 8,114 |
2020-08-12 | 31 | 0 | 286 | 9,540 |
2020-08-13 | 0 | 0 | 29 | 11,045 |
2020-08-14 | 0 | 0 | 11 | 10,037 |
2020-08-15 | 0 | 0 | 211 | 4,635 |
2020-08-16 | 0 | 0 | 64 | 3,231 |
2020-08-17 | 0 | 0 | 414 | 4,149 |
2020-08-18 | 4 | 0 | 349 | 4,380 |
2020-08-19 | 24 | 0 | 223 | 6,216 |
2020-08-20 | 13 | 0 | 212 | 4,872 |
2020-08-21 | 17 | 0 | 94 | 6,300 |
2020-08-22 | 0 | 0 | 199 | n/a |
2020-08-23 | 0 | 0 | 0 | n/a |
2020-08-24 | 4 | 0 | 322 | 3,546 |
2020-08-25 | 8 | 0 | 85 | 4,506 |
2020-08-26 | 4 | 0 | 25 | 6,174 |
2020-08-27 | 0 | 0 | 0 | 3,090 |
2020-08-28 | 9 | 0 | 0 | 2,322 |
2020-08-29 | 0 | 0 | 4 | 2,772 |
2020-08-30 | 0 | 0 | 0 | 1,017 |
2020-08-31 | 3 | 0 | 0 | 387 |
2020-09-01 | 8 | 0 | 0 | 444 |
2020-09-02 | 15 | 0 | 0 | 1,464 |
2020-09-03 | 7 | 0 | 4 | 3960 |
2020-09-04 | 6 | 0 | 3 | 3543 |
2020-09-05 | 0 | 0 | 0 | 918 |
2020-09-06 | 0 | 0 | 0 | 432 |
2020-09-07 | 0 | 0 | 0 | 615 |
2020-09-08 | 8 | 0 | 0 | 393 |
2020-09-09 | 25 | 0 | 0 | 189 |
2020-09-10 | 46 | 0 | 0 | 444 |
2020-09-11 | 16 | 0 | 0 | 963 |
2020-09-12 | 0 | 0 | 0 | 1,154 |
2020-09-13 | 0 | 0 | 0 | 969 |
2020-09-14 | 18 | 0 | 0 | 861 |
2020-09-15 | 28 | 0 | 0 | 870 |
2020-09-16 | 22 | 0 | 0 | 1,020 |
2020-09-17 | 33 | 0 | 0 | 1,008 |
2020-09-18 | 0 | 0 | 0 | 1,392 |
2020-09-19 | 0 | 0 | 0 | 399 |
2020-09-20 | 0 | 0 | 0 | 480 |
2020-09-21 | 11 | 0 | 0 | 285 |
2020-09-22 | 4 | 0 | 0 | 588 |
2020-09-23 | 31 | 0 | 0 | 570 |
2020-09-24 | 30 | 0 | 0 | 270 |
2020-09-25 | 0 | 0 | 0 | 513 |
2020-09-26 | 0 | 0 | 0 | 417 |
2020-09-27 | 0 | 0 | 0 | 390 |
2020-09-28 | 26 | 0 | 0 | 189 |
2020-09-29 | 24 | 0 | 0 | 600 |
2020-09-30 | 21 | 0 | 0 | 486 |
2020-10-01 | 0 | 0 | 0 | 960 |
2020-10-02 | 0 | 0 | 0 | 657 |
2020-10-03 | 0 | 0 | 0 | 561 |
2020-10-04 | 0 | 0 | 0 | 1,113 |
2020-10-05 | 30 | 0 | 0 | 690 |
2020-10-06 | 20 | 0 | 0 | 987 |
2020-10-07 | 15 | 0 | 0 | 1,320 |
2020-10-08 | 0 | 0 | 0 | 1.053 |
2020-10-09 | 0 | 0 | 0 | 606 |
2020-10-10 | 0 | 0 | 0 | 306 |
2020-10-11 | 0 | 0 | 0 | 105 |
2020-10-12 | 0 | 0 | 0 | 27 |
2020-10-13 | 0 | 0 | 0 | 3 |
2020-10-14 | 0 | 0 | 0 | 51 |
2020-10-15 | 0 | 0 | 0 | 3 |
2020-10-16 | 0 | 0 | 0 | 42 |
2020-10-17 | 0 | 0 | 0 | 15 |
2020-10-18 | 0 | 0 | 0 | 45 |
2020-10-19 | 4 | 0 | 0 | 30 |
2020-10-20 | 10 | 0 | 0 | 21 |
2020-10-21 | 13 | 0 | 0 | 18 |
2020-10-22 | 0 | 0 | 0 | 6 |
2020-10-23 | 0 | 0 | 0 | 0 |
Total | 1,006 | 1,527 | 8,273 | 161,425 |
Emergency enhancement
Emergency enhancement
During the 2020 Fraser salmon migration season, fish selected for the Big Bar Emergency Conservation Enhancement Program were genetically tested to identify the stock or origin of each salmon. Following the results, they were transported to one of a number of hatcheries supporting the Big Bar program. The table below indicates the number of chinook and sockeye that were initially selected to support the recovery of impacted populations. As a result of these efforts, 125,000 Early Stuart sockeye, 10,000 Bowron sockeye and 68,000 chinook embryos are currently being reared at the hatcheries with their eventual release planned for summer 2021.
Date | Weekly total | Chinook | Sockeye |
---|---|---|---|
August 8 to 14, 2020 | 34 | 34 | 0 |
August 1 to 7, 2020 | 330 | 23 | 307 |
July 25 to 31, 2020 | 145 | 38 | 107 |
July 18 to 24, 2020 | 21 | 21 | 0 |
July 11 to 17, 2020 | 0 | 0 | 0 |
July 4 to 10, 2020 | 0 | 0 | 0 |
June 27 to July 3, 2020 | 2 | 2 | 0 |
Total | 532 | 118 | 414 |
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