This is now the highest one day precipitation since July 7, 1991 when 82.0 mm was recorded at the Waterloo-Wellington Airport. The wettest day since 1970 was 89.8 mm on July 15, 1985.
The average monthly precipitation for July is only 92.9 mm and this morning we got more precipitation than we did in March, April, or May.
Looking at the GRCA gauges you can see that there was only a narrow path of really heavy precipitation with Laurel Creek getting 66.8 mm but Cambridge, Woolwich, and Conestogo only receiving around 27 mm. While Guelph only recorded 7.6 mm.
(if you can't read the numbers above, here is a clearer view)
As I biked by Silver Lake this morning the boardwalk was flooded and you could not see the weir structure at the end of the lake.
Silver Lake outlet at 9:30 am, July 11th:
Silver Lake outlet at 12:30 pm, July 11th: