Calgary train derailment sends 13 freight cars into Priddis Slough near southwest communities
Calgary train derailment on July 13, 2026 sent 13 freight cars into Priddis Slough; no injuries or leaks reported. CPKC and Calgary responders are on scene.
A freight train derailed on the Canadian Pacific Kansas City (CPKC) line in southwest Calgary early Monday, sending multiple boxcars and tanker cars into the Priddis Slough wetland. The Calgary train derailment occurred just south of Stoney Trail near Sheriff King Street S.W. after 7:30 a.m., city and company officials said.
Derailment location and immediate scene
The derailed consist came to rest adjacent to a large wetland between the Silverado and Chaparral communities, with several cars partly submerged in standing water. Emergency crews from Calgary Police and city responders established a perimeter and advised the public to avoid the area for safety reasons.
Witnesses reported seeing boxcars and several tanker cars leaning or submerged in the slough near Shawville Gate and the Somerset-Bridlewood CTrain station. City officials warned residents that traffic and transit service in the vicinity might be affected as responders work on scene.
Cargo manifest and safety assessment
CPKC confirmed the train was hauling a mixed load of lumber, plywood, propane and argon in 13 cars involved in the incident. Company and emergency officials said early inspections showed no signs of leakage from the tanker cars, and crews on site continued monitoring for any hazardous releases.
A CPKC spokesperson said additional company crews were en route to begin recovery and cleanup operations, and that the crew aboard the train was uninjured. Authorities emphasized that public safety remained the priority while they assessed any environmental or structural risks to the wetland.
Emergency response and public advisories
Calgary Police issued an alert to media and the public requesting people stay clear of the derailment area while emergency personnel secure the scene. First responders established cordons and coordinated with railway specialists to evaluate stability and hazards posed by the submerged cars.
City transit officials warned of possible impacts near the Somerset-Bridlewood CTrain station and along Shawville Gate as recovery efforts progress. Residents and commuters were urged to follow official advisories and plan for potential delays in the southwest quadrant of the city.
Environmental concerns for Priddis Slough
Priddis Slough is a notable wetland that supports local wildlife and acts as stormwater habitat for the surrounding neighbourhoods. Environmental authorities and CPKC crews indicated they would be monitoring the slough for contamination, given the presence of tank cars carrying gases and other freight in proximity to the water.
Specialized teams typically conduct phased sampling and mitigation when cargo is in or near sensitive ecosystems, and officials said they would deploy appropriate resources if testing indicates any impact. At this stage, no leaks have been detected, but the situation will be closely watched while recovery continues.
Transport disruption and community impact
The derailment is expected to disrupt freight movements on the CPKC corridor while recovery and track repairs are undertaken, with knock-on effects for rail schedules in the region. Local road traffic and public transit users in the surrounding communities should anticipate changes as crews work to clear the site and restore safe operations.
Businesses that rely on rail-served logistics could face delays depending on how quickly the line is cleared and inspected. City authorities and the railway operator said they would provide updates as timelines for cleanup and track restoration are established.
Investigation and next steps
CPKC and municipal authorities announced the cause of the derailment remains under investigation, with railway safety inspectors and company specialists examining the site. Initial statements confirmed the onboard crew was not injured and that a formal investigation will determine any mechanical, track, or operational factors involved.
Officials said recovery will proceed in phases: securing the site, confirming no hazardous releases, removing derailed cars, and conducting environmental and infrastructure assessments. Authorities pledged to share information with the public as more facts are verified and cleanup actions are completed.
Responders and the railway company continued work at the scene through the afternoon, focusing on stabilizing the derailed cars and protecting the Priddis Slough wetland. Residents were reminded to heed safety messages and expect continued disruption while authorities complete their response.
