Analysis of Discharge Variation and Influence in the Upstream of Huangpu River
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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