Alcohol will be banned from a large swathe of Edinburgh Gardens on Australia Day in response to revellers trashing the popular park on New Year's Eve.

Yarra City Council met on Tuesday night for a three-hour crisis meeting after up to 20,000 revellers descended on the Fitzroy North gardens, leaving a $21,300 clean up bill.

Partygoers wade through the mess at Edinburgh Gardens. Credit:Penny Stephens

A police officer and a Noble Park man were assaulted and twenty people were treated for cuts, abrasions and alcohol-related injuries.

Ambulance Victoria bosses criticised the safety of the unauthorised dance parties at the gardens. Police were called back to the gardens on Monday after two heavy metal bands performances drew a crowd of about 200 people.