Analysis of the Impact of the Gushan Navigation and Hydropower Project on Hydrological Regime and Water Quality of Han River

Abstract

Based on the math model and comparative analysis, the change of hydrological regime and water quality in the Han River from the site of Baihe Hydropower Station to Gushan Hydropower Station caused by the dammed water of hydropower station and the regulation effect of reservoir is studied herein. The typical days in the wet season and the dry season in the dry year were selected as the study period in which the changes of hydrological regime and water quality after the construction of the reservoir were studied by comparative analysis. The results show that the project has some impact on the hydrological regime in the reservoir as the water level and the water depth would increase while the flow velocity would decrease after the construction of the reservoir. The water quality would be improved in different degree after the construction of the reservoir. For the sections which were near the dam, the degree of the water quality would be obviously improved.