Rail transportation safety investigation R25C0114

Table of contents

    Main-track train derailment 
    Canadian Pacific Railway Company (CPKC)
    Mile 13.5 to 13.8, Thompson Subdivision
    Kamloops, British Columbia 

    The occurrence 

    On 01 November 2025, a Canadian Pacific Railway Company mixed freight train, carrying 108 loaded cars and 28 empty cars, was travelling westward on the Thompson Subdivision when 17 cars and a mid-train remote locomotive derailed on the south shore of Kamloops Lake, approximately 14 miles west of Kamloops, British Columbia.

    The derailment occurred in two distinct sections between Mile 13.5 and Mile 13.8. Several of the derailed cars in the first block were tank cars containing dangerous goods. 

    One empty tank car ended up in Kamloops Lake, and another came to rest on the south shoreline, along with two tank cars containing jet fuel. Approximately 70 736 litres of jet fuel were estimated to have been released into Kamloops Lake. No injuries were reported in this occurrence. The TSB is investigating.

    Photos

    Derailment site on the south shoreline of Kamloops Lake, about 14 miles from Kamloops, British Columbia (Source: CPKC)

      Download high-resolution photos from the TSB Flickr page.

    Class of investigation

    This is a class 4 investigation. These investigations are limited in scope, and while the final reports may contain limited analysis, they do not contain findings or recommendations. Class 4 investigations are generally completed within 220 days. For more information, see the Policy on Occurrence Classification.

    TSB investigation process

    There are 3 phases to a TSB investigation

    1. Field phase: a team of investigators examines the occurrence site and wreckage, interviews witnesses and collects pertinent information.
    2. Examination and analysis phase: the TSB reviews pertinent records, tests components of the wreckage in the lab, determines the sequence of events and identifies safety deficiencies. When safety deficiencies are suspected or confirmed, the TSB advises the appropriate authority without waiting until publication of the final report.
    3. Report phase: a confidential draft report is approved by the Board and sent to persons and corporations who are directly concerned by the report. They then have the opportunity to dispute or correct information they believe to be incorrect. The Board considers all representations before approving the final report, which is subsequently released to the public.

    For more information, see our Investigation process page.

    The TSB is an independent agency that investigates air, marine, pipeline, and rail transportation occurrences. Its sole aim is the advancement of transportation safety. It is not the function of the Board to assign fault or determine civil or criminal liability.

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