Decision-making on reservoir flood control level and its control manner in post-flooding seasons for Biliuhe Reservoir

Due to the characteristics of flood in regions in North China, it is difficult to determine the flood prevention standard after dividing the whole flood season into sub-seasons. This study develops alternatives for the reservoir's limited water level in post-flood seasons through optimization based on the three angles:the flood prevention, flood utilization and the balance between them. A multilayer fuzzy optimal selection model is established by coordinating the complex relationship among the multi-objectives. The proposed method is applied to Biliuhe reservoir and raises the limited water level in post-flood seasons without decreasing the flood prevention standard. The results show that it can provide technical support for the decision-making and be applied to those reservoirs in the water shortage regions in North China.