A coroner has urged theme parks to address water ride safety concerns following the inquest into the drowning of Evah Jannath.
Margaret Jones, the assistant coroner for south Staffordshire, has written a Report for the Prevention of Future Deaths to UK theme park managers after concluding an inquest into the death of the 11-year-old.
Evha was on the Splash Canyon River Rapids at Drayton Manor in Staffordshire during an end-of-year school trip with her friends in 2017.
An inquest into Evha's death heard how she was "propelled" from the vessel she was sitting in, waded to the end of the ride but fell into deeper water while trying to climb an algae-covered "travelator".
She was later discovered face down and "lifeless" in the water.
In a statement released after the inquest, the girl's family said they entrusted their daughter's safety to the school on what should have been a "fun school trip".
They were devastated to hear that none of the ride staff knew how to rescue Evha from the water and that there was no life-saving equipment available.
The coroner has sent the report to Drayton Manor, Alton Towers, also in Staffordshire, Legoland, in Berkshire, Thorpe Park, in Surrey, and operators Merlin Entertainments and Lightwater Valley Theme Park.
Jones said that during the inquest "the evidence revealed matters giving rise to concern".
She added: "In my opinion there is a risk that future deaths will occur unless action is taken."
Identifying six "matters of concern", she said it was "not possible to adequately monitor CCTV" on the ride that day because staff had other tasks to complete, and also highlighted the fact only half the ride's route was covered by cameras.
She added there had been no safety warnings given to guests boarding the ride's boats, warning signs were incomplete, and in some cases were illegible due to wear and tear.
The coroner said no water rescue equipment was available to staff and they had not been trained in such rescues.
She also said that ride staff had "no clear understanding" of emergency procedures.
Concluding, she added: "Management staff did not accept that guest safety measures (CCTV, safety instructions and signage) had failed."
"In my opinion, action should be taken to prevent future deaths and I believe you have the power to take such action."
The coroner also drew attention to a water ride safety notice issued to all theme parks immediately after Evha's death, by the Health and Safety Executive.
She asked for a detailed response from Drayton Manor's manager to the concerns raised at the inquest, and replies regarding actions taken as a result of the HSE notice from all theme park managers nationally.
The coroner has given until January 8 for the parks to respond with what actions they are taking, although that period can be extended.
Copies of the report have been sent to Evha's family and school, the Chief Coroner for England and Wales and Staffordshire Safeguarding Children Board.
The ride, which has been closed since the incident, will not be reopened without approval by the HSE.