Big Bar landslide response information bulletin
June 10 2022
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Delayed spring snow melt and the impact on operations at Big Bar
Snowpack update
Throughout May, cool, rainy weather has descended on the Upper Fraser, significantly delaying the usual snow melt in this region. This unusual spring weather increases the probability of a larger freshet on the Fraser River. As a result, there is a potential for delayed migration of early spring Chinook and Early Stuart sockeye. It is possible that other early summer sockeye such as Bowron, Nadina and Taseko could be adversely impacted as well.
As of June 8th, key areas causing freshet at Big Bar are the watersheds of the Upper Fraser East at 185% of normal snowpack and Middle Fraser at 188% of normal. Weather conditions through June and July will determine the timing, magnitude, and rate of snowmelt and heavy rainfall events can exacerbate the situation
Based on healthy brood years and near normal ocean conditions over the past two years, strong returns of sockeye and Chinook are predicted throughout the Fraser River watershed. Early season forecasts are expected in the coming weeks as salmon approach the mouth of the lower Fraser. In response to potential large run sizes and possible migration delays, all the Big Bar mitigation programs are preparing for summer operations, including trap and transport, conservation enhancement and monitoring.
Crews will carefully monitor reports from the British Columbia River Forecast Centre and DFO's Fraser River Environmental Watch reports (EWATCH) to anticipate conditions at the slide site. The reports will contribute to program decisions throughout the migration season.
For more information on recent snowpack levels visit the
River Forecast Centre website.
Fry release update
Operations to release salmon fry from the 2021 Big Bar enhancement program are well underway. Depending on the release location, the team will employ either trucks and tanks or helicopter drops. Eleven of the fourteen planned Chinook releases have occurred; the final three will be completed by mid-June. Additionally, three sockeye releases have been completed with three more slated for mid-June, and a fall parr release scheduled for mid-September. The releases have been successful with all fish safely released into their respective tributaries. Due to the late spring, some releases were rescheduled due to access issues, later than normal freshets, cold water temperatures or slow fish growth in some populations. A number of releases have been planned to coincide with local community events and ceremonies, illustrating the significance of these conservation-based enhancement efforts. The two tables below outline the schedule of the Big Bar fry releases. Due to the delayed snow melt details on future releases may be adjusted.
Chinook fry release summary table
Stock | Facility Expediting Release | Number of fish in release | Release Type | Release Date |
---|
Salmon | QRRC | 4323 | Truck | 26-Apr |
Bowron | SCWA | 25155 | Truck | 7-May |
Upper Chilcotin | QRRC | 13956 | Helicopter | 9-May |
McGregor Fontiniko | QRRC | 20907 | Helicopter | 10-May |
Torpy West | QRRC | 17989 | Helicopter | 10-May |
Torpy Walker | QRRC | 20071 | Helicopter | 12-May |
Swift | SCWA | 16392 | Truck | 15-May |
Tete Jaune | QRRC | 21853 | Truck | 17-May |
Willow | QRRC | 8485 | Truck | 19-May |
Upper Cariboo | QRRC | 59678 | Helicopter | 27-May |
West Road/Blackwater | QRRC | 24518 | Truck | 31-May |
Endako | QRRC | 2648 | Truck | 9-Jun |
Slim | QRRC | 43880 | Truck | 14-Jun |
Horsefly | QRRC | 16628 | Truck | 16-Jun |
McGregor Seebach | Chehalis | 27649 | Truck | 21-Jun |
Sockeye fry release summary table
Stock | Facility expediting release | Number of fish in release | Release type | Release date |
---|
Bowron | Shuswap | 19775 | Helicopter | 19-May |
Taseko | Shuswap | 20000 | Helicopter | 24-May |
Late Stuart | Nak'azdli | 67830 | Truck | 8-Jun |
Early Stuart | Shuswap | 108000 | Truck | 10-May |
Inch | 257385 | Truck | 15-Jun | |
Inch | 180970 | Truck | 20-Sep | |
Takla | 37500 | Truck | 16-Jun | |
Salmon Count
Data on DFO's
salmon count webpage will begin this month. Once salmon start entering the Big Bar landslide site area, the table will be updated.
Current images of work being done at the landslide site
20,000 Taseko sockeye fry released by helicopter in Taseko Lake, May 24, 2022. Click to enlarge.
Blackwater river 24,500 Chinook fry release with Nazko First Nation near Quesnel, May 31 2022. Click to enlarge.
60,000 Chinook fry flown from Barkerville to the Upper Cariboo River, May 27, 2022. Click to enlarge.