Future changes in urban drainage pressure caused by precipitation extremes in 285 cities across China based on CMIP6 models

•Urban drainage pressure (UDP) would increase across China from the 2020s to 2090s.•Northern China would see 30% lager UDP since the 2020s under SSP5–8.5 scenario.•Climate mitigation would reduce UDP in more than half of the cities across China.•Low impact development would reduce UDP particularly in northern China.•Pipe enlargement would postpone the occurrence of dangerous UDP in eastern China.