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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/hess-2016-310
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
22 Jul 2016
Review status
A revision of this discussion paper is under review for the journal Hydrology and Earth System Sciences (HESS).
Model Study on Potential Contributions of the Proposed Huangpu Gate to Flood Control in Taihu Lake Basin
Hanghui Zhang1,2, Shuguang Liu1, Jianchun Ye1,2, and Pat Yeh3 1Department of Hydraulic Engineering,Tongji University, 200092, Shanghai
2Taihu Basin Authority of Ministry of Water Resources, 200434, Shanghai
3Department of Civil and Environmental Engineering, National University of Singapore, 117576, Singapore
Abstract. The Taihu Lake basin, one of the most developed and dynamic regions, is located in the hinterland of the Yangtze River Delta, Eastern China. The largest flood in history is the 1999 flood event with a return period of 1 in 200 years, which is above the current capacity of flooding defense in the basin with a return period of 1 in 50 years. Due to its flat saucer-like terrain, the capacity of the flood control system is dependent on the flood defense infrastructure and the peripheral tidal conditions. The Huangpu River, connecting the Taihu Lake and the Yangtze River, is one of the major drains, which is strongly influenced by high tide conditions in the coastal waters of the Yangtze River. Hence, constructing an estuary gate is considered one of the effective solutions to the flooding problem in the basin. This paper aims to quantitatively analyze the potential contributions of the proposed Huangpu gate to flood control capacity of the basin under various flooding scenarios. It is concluded that the Huangpu gate is an effective mean to evacuate the floodwaters, by reducing peak levels in the upper part of the tide-affected river. Its beneficiaries include the Taihu Lake, the related surrounding areas along the Taipu Canal and the Huangpu River basin.

Citation: Zhang, H., Liu, S., Ye, J., and Yeh, P.: Model Study on Potential Contributions of the Proposed Huangpu Gate to Flood Control in Taihu Lake Basin, Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2016-310, in review, 2016.
Hanghui Zhang et al.
Hanghui Zhang et al.
Hanghui Zhang et al.

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Short summary
The Taihu Lake basin is located in the hinterland of the Yangtze River Delta. Constructing a gate at the mouth of the Huangpu River is considered one of the effective solutions to the basin's flooding problems. The pattern of river flow changes from bi-directional to unidirectional flow when the estuary gate is operated. It is concluded that the Huangpu River with a proposed gate is more effective than a natural channel, and its beneficiaries include the lake and the related surrounding areas.
The Taihu Lake basin is located in the hinterland of the Yangtze River Delta. Constructing a...
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