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
1642 Yellow River flood in the hopes of using the floodwaters to break the six-month siege the city had endured from the peasant rebels led by Li Zicheng. The dikes were burst but the water destroyed Kaifeng. Over 300,000 of the 378,000 residents were killed by the flood and ensuing peripheral disasters such as famine and plague. If treated as a natural disaster, it would be one of the most deadly floods in history. After this disaster the city was abandoned until 1662 when it was rebuilt under the rule of the Kangxi Emperor in the Qing dynasty. It remained a rural backwater city