Here are three incredible photos taken from the air, showing how bad it was. (To enlarge any photo, simply click on it to open a larger viewing window)
First photo is taken looking east from above the old neighbourhood at Woodroffe (largely expropriated for the Parkway in the 50s). Westboro is beyond in the distance, and you can see almost to where Westboro Beach begins:
This shot is taken just slightly to the east of Westboro Beach, again looking east towards downtown. These are the houses of the Westboro Beach community in behind, the north extension of Churchill Avenue to the water. Champlain Bridge in the background, which was then only a few months old (the first link to Bate Island was opened in September of 1927).
Here is more of a close-up of the Champlain Bridge, and you can see the water throughout the Champlain Park community at top right. The bridge access ramp actually goes underwater and disappears, the water is so high! (Note this was the original access ramp/approach; within a year or two, a new approach was built coming more straight off the bridge, rather than the nearly-90 degree angle it went at in 1928). The original access ramp is now actually the parking/lookout area immediately to the east of the Bridge!