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METHODS article

Front. Environ. Eng.
Sec. Water, Waste and Wastewater Engineering
Volume 3 - 2024 | doi: 10.3389/fenve.2024.1432465
This article is part of the Research Topic Climate Change and Water Vulnerability in Urban Areas: Novel Methods and Technologies View all articles

Method for calculating water surface profile at watershed scale with little observed data based on ASTER GDEM: a case study in the Naoli river, northeast of China

Provisionally accepted
Lin Tian Lin Tian *Yinying Wei Yinying Wei Sheng Wang Sheng Wang Guorong Zhang Guorong Zhang Chuangjia Zhao Chuangjia Zhao Xin Huang Xin Huang Weiyu Huang Weiyu Huang
  • Changchun Institute of Technology, Changchun, China

The final, formatted version of the article will be published soon.

    The calculation of river water surface profile has always been a very important problem in the field of hydraulic engineering. With the development of the research on the surface and ground water coupled simulation, river water surface profile become an indispensable boundary condition for simulating the inter-relationship between surface and ground water. River channel large-section data is the basic condition for building most hydrodynamic models, and its field data often consumes a lot of manpower and material resources. We extracted river sections using ArcGIS based on the ASTER GDEM data; interpolated the corresponding water level of different guarantee rate flow in Baoqing station and Caizui station. We analyzed the variation of upstream water level under different Manning coefficients n, and the bed resistance of the Naoli river was determined to be 0.025. In order to ensure the rationality of the model and the reliability of the operation results, three indexes (non-scouring velocity, the shear stress of river bed and water surface slope) are used to analyze and test the rationality of the simulation results. Ultimately, achieved the calculation of water surface profile from Baoqing hydrologic station to Caizuizi hydrologic station in Naoli river through MIKE11 hydrodynamics model under the guaranteed rates of 20%, 50%, 75%, and 95% of the flow.The calculation of the water surface profile can provide the hydrological boundary conditions for surface and ground water conversion and the combined simulation. Furthermore, the present study can provide a feasible method for calculating river water surface profile in areas lack measured section data.

    Keywords: ASTER GDEM, Mike11, Water surface profile, Naoli River, calculation

    Received: 14 May 2024; Accepted: 06 Nov 2024.

    Copyright: © 2024 Tian, Wei, Wang, Zhang, Zhao, Huang and Huang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Lin Tian, Changchun Institute of Technology, Changchun, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.