On July 15, 2004, Peterborough experienced 175 mm of rainfall over the city. During the hour between 3:30 am and 4:30 am alone, 78.8 mm came down. All hell broke loose. Cars were floating (and some people were trapped in them), basements and buildings were flooded, roofs collapsed under the weight of the rain. A State of Emergency was declared by Mayor Sutherland. It made national and international news. It was a day people who lived here will never forget. There is even a "City of Peterborough Flood 2004 Fact Sheet" about that day.