The Independent Broad-based Anti-corruption Commission (IBAC) received more than 1900 complaints against Victoria Police last year, representing almost 70 per cent of its total complaints intake.
The watchdog completed 18 police-related preliminary inquiries and investigations, and started 11 more in 2022.
It held six days of public hearings for Operation Bredbo, which centred around allegations of misconduct by a long-standing Victoria Police officer.
The commission also reviewed more than 240 internal police investigations to ensure they were thorough, fair and that the findings were evidence-based.
That represented a 68 per cent increase from 2021, Deputy Commissioner Kylie Kilgour said.
She said the data from the commission's annual police oversight snapshot showed its work to oversee, investigate and expose police corruption and misconduct in Victoria was increasing.
Victoria Police notified the commission about serious incidents more than 260 times in 2022.
The watchdog made 90 new recommendations for Victoria Police, and the force implemented 36 previous ones, including by changing their conflict of interest policy.
Ms Kilgour said the force also committed to adopting all the recommendations from a report about their handling of complaints made by Aboriginal people.
"IBAC recognises we could not achieve much of this work without the co-operation of the community and Victoria Police employees, who alert us to misconduct or corruption," she said.
The commission ran 45 educational sessions for Victoria Police in 2022, and a regional campaign to increase awareness about its role as the state's police oversight body.
Victoria Police has been contacted for comment.
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