One arrest was made and multiple parties shut down by police as St Patrick's Day carnage continued into the evening yesterday.
Senior Sergeant Anthony Bond said police monitored large groups of students gathering in the student quarter throughout the evening.
Evening festivities were marred by a 22-year-old student who was taken to Dunedin Hospital in a serious condition after falling from an internal balcony.
He was found unconscious and with blood coming from his ears.
Throughout the afternoon large numbers of students, mainly first years, congregated at Brackens Lookout, with 300-400 being noted at 6pm.
The throngs finally dispersed around 10.30pm, Snr Sgt Bond said.
The injuries which marred the day were preventable and tied up emergency services, preventing them from attending other emergency calls throughout the day, Snr Sgt Bond said.
A Castle St resident described the day as ''massive'' and said he was very hungover.