The Control Index for the Construction of Sponge City in the Residential Area: A Case Study of Nanjing Jiangbei New District

Table 5

The total annual runoff control rate corresponding to the design rainfall in Nanjing.

Annual runoff control rate	35%	40%	45%	50%	55%	60%	65%	70%	75%	80%	85%	90%
Designed rainfall (mm)	6.2	7.5	9.0	10.7	12.6	14.8	17.4	20.6	24.8	29.8	36.8	48.4

Note. The data are from China Meteorological Administration 1981–2015.