A woman who went missing before being found dead at a park was suffering from depression, an inquest opening has heard.
Officers searching for the 26-year-old said they believed she went missing without money or belongings.
Forensic officers were pictured at nearby Debdale park later that day.
Police said they were searching the area as part of a missing person enquiry.
Officers later confirmed a body - believed to be that of Ms Biernacka - had been discovered.
She was found in a reservoir by an underwater search team.
Her death was not treated as suspicious.
An inquest has now been opened at Manchester Coroners' Court.
Senior coroner Nigel Meadows said Ms Biernacka, a factory worker of Polish descent, was reported to have been suffering from depression.
Mr Meadows said he would request a witness statement from Ms Biernacka's flatmate, statements from her family in Poland and a report from a senior Detective Inspector on the case.
He adjourned the inquest to a date to be fixed.
