1999•Hydrological Sciences JournalOpen access

Fuzzy optimal model for the flood control system of the upper and middle reaches of the Yangtze River

CHENG CHUNTIAN

Abstract

Based on the characteristics of the Yangtze River floods and the principles of fuzzy sets theory, a fuzzy optimal model has been established for the flood system of the upper and middle reaches of this river. The system is divided into three subsystems with specific flood control objectives. The Three-Gorges Reservoir plays an important role in the system. A method for producing flood operation alternatives of the Three-Gorges Reservoir is presented. Finally, the model is validated with three typical historical floods. The results show that the model is effective and flexible.

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Key concepts: Three gorges, Yangtze river, Flood control, Flood myth, Hydrology (agriculture), Fuzzy logic, Water resource management, Environmental science