It can be seen that the discharge of the upper reaches of Huangpu River in the past 20 years has increased signifi-cantly.The change of discharge was analyzed quantitatively by anomaly analysis and P-Ⅲ frequency analysis to determine the hy-droperiod and typical annual discharge.The result shows that 1962-2002 was a hydroperiod,during which the average annual dis-charge of the upper reaches of the Huangpu River was 318 m3/s;The annual average discharge of the Huangpu River in the past 20 years was 623 m3/s,with a return period of once in 200 years;There is no significant correlation between the increase of dis-charge and the basin precipitation,which is mainly caused by interbasin water transfer projects such as the Yangtze-Taihu Water Diversion,urbanization,channel engineering and polder construction.The significant change of hydrological modality has noticeable impacts on hydrometry,water management and construction.
upstream of Huangpu Riverdischargefrequency analysisinfluence factor
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NSTL
万方数据
