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SWMM-Based Assessment of the Improvement of Hydrodynamic Conditions of Urban Water System Connectivity

Abstract

Scientific assessment of the hydrodynamic conditions of water system connection is of great significance and value in guiding the ecological construction of urban water system connection and building healthy river–lake relationship. Based on the advantages of SWMM in effectively simulating urban rainfall and surface runoff, a hydrological and hydrodynamic model was constructed before and after the implementation of urban water system connection project, and the model was applied to the analysis of rainfall and flooding processes in two recurrence periods of 5a and 10a after the implementation of urban water system connection in Pingyu County. The results show that the initial flow rate and velocity of river cross-section increased in the same recurrence period after the water system connection, the maximum increase of water exchange capacity was 115.56%, the peak flow rate and velocity were weakened and the peak time was lagged, and the hydrodynamic conditions were improved significantly.

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Data Availability

Data and materials are available from the corresponding author upon request.

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Funding

This work was supported by the Key Scientific Research Project of Colleges and Universities in Henan Province (CN) [grant numbers 17A570004].

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All authors contributed to the study conception and design. Writing and editing: Xianqi Zhang and Kai Wang; chart editing: Tao Wang; preliminary data collection: Kai Wang. All authors read and approved the final manuscript.

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Correspondence to Kai Wang.

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Zhang, X., Wang, K. & Wang, T. SWMM-Based Assessment of the Improvement of Hydrodynamic Conditions of Urban Water System Connectivity. Water Resour Manage 35, 4519–4534 (2021). https://doi.org/10.1007/s11269-021-02964-7

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Keywords

  • Water system connectivity
  • SWMM model
  • Hydraulic characteristics
  • Peak time
  • Pingyu County