Banqiao Dam discharge of the reservoir is 15000 m/s (about 3.96 million gallons/s). After the disaster of the Banqiao dam failure, the Chinese government became very focused on surveillance, repair, and consolidation of reservoir dams. China has 87,000 reservoirs across the country; most of which were built in the 1950s–1970s using low construction standards. Most of these reservoirs are in serious disrepair, posing challenges to the prevention and control of flood-triggered geological disasters in areas with a population of 130 million or more. China's medium and small rivers are considered to be the Achilles' heel in the country's river control systems. According
History of flooding in Canada due to sewer back-up, not fire. Floods occur five times as often as wildfires, the second most frequent natural hazard in Canada. Between 1900 and 2005 there were 241 flood disasters in Canada. The 1894 Fraser River flood had a return period of slightly more than 500 years and the 1948 flood was close to a 200-year event. The 1997 Red River flood was named the 'flood of the century'. The International Joint Commission (IJC)'s 1998 report warned that although the 1997 Red River flood had a "return interval ranging from 100 to 500 years, depending on the location", there