Response of Extreme Hydrological Events to Climate Change in the Water Source Area for the Middle Route of South-to-North Water Diversion Project

Table 8

Future and historical predicted extreme flood discharges for a range of return periods.

Return period (year)	5	10	20	30	40	50
Historical flood (×10^9 m^3/d)
W1	1.610	1.964	2.289	2.471	2.597	2.693
W3	3.504	4.270	4.980	5.379	5.655	5.866
Calculated by RX1day (×10^9 m^3/d)
W1	1.367	1.754	2.149	2.388	2.561	2.698
W3	2.926	3.651	4.343	4.739	5.017	5.230
Calculated by RX3day (×10^9 m^3/d)
W1	1.387	1.768	2.158	2.394	2.566	2.702
W3	2.989	3.692	4.368	4.756	5.030	5.240