Assessing the impacts of reservoir operation on downstream water diversions using a simplified flow model |
| |
| Authors: | Zhaohua Sun Xuefeng Chu |
| |
| Institution: | 1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, China;2. Department of Civil &3. Environmental Engineering, North Dakota State University, Fargo, North Dakota, USA https://orcid.org/0000-0003-0322-0271 |
| |
| Abstract: | ABSTRACTThe operation of the Three Gorges Reservoir (TGR) affects the evolution of the interactions between the Yangtze River and Dongting Lake in China and water diversions from the river, which are essential to water resources management in this large river–lake system. Due to the lack of up-to-date and detailed channel topographic/bathymetric data, a simplified flow model based on rating curves was developed to simulate discharges in the river system, and to further quantify and differentiate the contributions of river erosion and flow regulation of the TGR at a seasonal scale. The results indicate that the effect of channel alteration counteracts the effect of reservoir regulation in the high-flow periods. The impacts of TGR regulation on water diversions for both pre- and post-flood seasons were significant, but no obvious changes in the discharge diversion ratios were observed on an annual time scale. |
| |
| Keywords: | Three Gorges Reservoir streamflow channel alteration water diversion |
|
|
![ORCID Icon]({"type":"image","src":"/templates/jsp/images/orcid.png"} "ORCID Icon")
https://orcid.org/0000-0003-0322-0271