Emergency crews were dispatched to the scene at 12:45 a.m. Sunday morning.
Police said they aren't sure how the woman ended up in the water. At this time, the death does not appear suspicious and police are still waiting on toxicology results from the coroner's office.
The victim's identity has not been released, but police said she was 33 years old.
The nearby Molson Amphitheatre is hosting a weekend music festival featuring some of the world's best DJs, but it's not known if the woman had been attending last night's concert.