Research on the Influence of Rainstorm Duration Distribution to the Multi-Water Resources Allocation of Artificial Lake

With the development of the people's living standard, artificial lake has already become the important part of the urban ecological construction. The artificial lake needs a certain amount of water resources as a support, however, conventional water resources fail to meet the water demand of the artificial lake in the water shortage area. According to the water demand of meeting the artificial lake's ecological function, the paper has established the urban artificial lake multi-water resources optimal allocation model which based on the water quantities and water quality constraints. And under the different rainstorm duration distribution conditions, the model has been applied to settle the multi-water resources which include the conventional and unconventional water resources optimal allocation problem of the Tianjin Meijiang artificial lake and analyze the influence of rainstorm duration changes to the allocation. The results can provide a good foundation for the multi-water resources reasonable optimal allocation of the urban artificial lake.