Species Profile

Chinook Salmon Lower Fraser, Ocean, Summer population

Scientific Name: Oncorhynchus tshawytscha
Taxonomy Group: Fishes
COSEWIC Range: British Columbia, Pacific Ocean
COSEWIC Assessment Date and Status Change: November 2020
COSEWIC Status: Endangered
COSEWIC Status Criteria: B2ab(iii,v); C2a(ii)
COSEWIC Reason for Designation: Mature fish in this population return in summer and spawn at a single site (Maria Slough), in the lower Fraser River. A continuing decline in spawner abundance is expected as a result of highly modified freshwater and marine habitats, low marine survival and harvest. Failed water control structures and low water levels prevented spawners from accessing the spawning site in 2018. A continuing decline in water quality and quantity is expected due to increasing urbanization and run-off.
COSEWIC History of Status Designation: Designated Endangered in November 2020.
SARA Status: No schedule, No Status
Date of Listing (yyyy-mm-dd):

No schedule - No Status

Individuals of this species may be protected under Schedule 1 under another name; for more information see Schedule 1, the A-Z Species List, or if applicable, the Related Species table below.

Please note that this information is provided for general information purposes only. For the most up to date and accurate list of species listed under the Species at Risk Act, please see the Justice Laws Website.

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Protection

Federal Protection

Provincial and Territorial Protection

To know if this species is protected by provincial or territorial laws, consult the provinces' and territories' websites.

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Documents

PLEASE NOTE: Not all COSEWIC reports are currently available on the SARA Public Registry. Most of the reports not yet available are status reports for species assessed by COSEWIC prior to May 2002. Other COSEWIC reports not yet available may include those species assessed as Extinct, Data Deficient or Not at Risk. In the meantime, they are available on request from the COSEWIC Secretariat.

3 record(s) found.

COSEWIC Status Reports

Response Statements

  • Response Statement - Chinook Salmon, Lower Fraser, Ocean, Summer population (2022-01-10)

    Mature fish in this population return in summer and spawn at a single site (Maria Slough), in the lower Fraser River. A continuing decline in spawner abundance is expected as a result of highly modified freshwater and marine habitats, low marine survival and harvest. Failed water control structures and low water levels prevented spawners from accessing the spawning site in 2018. A continuing decline in water quality and quantity is expected due to increasing urbanization and run-off.

COSEWIC Annual Reports

  • COSEWIC Annual Report 2020 to 2021 (2021-10-12)

    Over the past year COSEWIC assessed a total of 66 wildlife species, of which 4 were assigned a status of Not at Risk. Of these 66, COSEWIC re-examined the status of 41 wildlife species; of these, 80% were reassessed at the same or lower level of risk. To date and with the submission of this report, COSEWIC’s assessments now include 826 wildlife species in various risk categories including 369 Endangered, 196 Threatened, 239 Special Concern, and 22 Extirpated (i.e. no longer found in the wild in Canada). In addition, 19 wildlife species have been assessed as Extinct, 62 wildlife species have been designated as Data Deficient, and 202 have been assessed as Not at Risk.
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