Mohammed “Reza” Zolati was visiting Longtimber Woods in Ivybridge, Devon, on June 15 2021 with his two stepchildren when the tragedy happened.
The girl escaped without serious injury but Reza ended up struggling in the water.
His stepson stopped a woman for help and other good samaritans attempted to pull Reza out from the popular deep body of water off the River Erme.
In a statement, the woman recalled how she and her friend were stopped by the boy while walking their dogs through the woods alongside the river.
The boy then told them his stepfather had been in an accident and led her down a rocky slope to the river.
The inquest heard she saw the shape of a body floating under the water so jumped into the water to rescue him while her friend took over the 999 call from the stepdaughter.
She told how she was not a strong swimmer but tried to dive down into the water to reach him but was unable to, and said she kept getting swept away.
The passerby said: “It was awful.”
Even with the help of her friend they were still unable to. Another passerby joined in the effort and it was only when he was assisted by another man that there were able to pull his body onto the rocks and begin CPR.
However, Reza was unable to be revived and was confirmed dead at 7.50pm.
The initial passerby said: “What happened was tragic but I believe everyone who helped was brilliant.
“The little boy and girl deserve some credit as they were so calm and deserve praise too.”
The inquest heard the passerby had managed to keep the children and also members of the public away from the scene.
Reza, who was born in Iran and was a mechanic before moving to the UK, had been in the water for around 25 minutes before being rescued and was unable to be revived.
A post mortem confirmed the cause of his death was drowning.
His GP described Reza as being a ‘fit and well’ man.
A police investigation confirmed there were no suspicious circumstances or third party involvement.
Detective constable Rachel Walke said: “It appears from all our enquiries it was a tragic accident.”
She added that on arrival at the scene, police were initially concerned for the welfare of the children who could not be seen but they were them confirmed as being safe and well at their nearby home.
DC Walke confirmed that the pool was a popular area for swimming and that it was deceptively deep and was ‘very difficult’ to get out of once in the water.