Black Country Coroners' Court heard Madiba Dbassi Diaby, of Wenlock Gardens, was found in a canal which runs alongside Razorbill Way on March 4.
Emergency services were sent to the scene and the boy, born on March 9, 2017, was taken to Birmingham Children's Hospital where he was confirmed dead.
The inquest, which opened on Tuesday, heard the cause of the boy's death was drowning according to the hospital. No family members were present at the hearing.
Mrs Joanne Lees, area coroner for the Black Country, adjourned the inquest to a date set-to-be-fixed at the court so more evidence can be gathered by police around the circumstances of the four-year-old's death – and what safety measures were in place at the location.