Arid Zone Research ›› 2023, Vol. 40 ›› Issue (8): 1240-1247.doi: 10.13866/j.azr.2023.08.04

• Land and Water Resources • Previous Articles     Next Articles

Application and comparison of two channel flood routing methods in Xinjiang mountainous areas

WANG Xiang1,2(),LYU Haishen1,2(),ZHU Yonghua1,2,GUO Chenyu1,2   

  1. 1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, Jiangsu, China
    2. College of Hydrology and Water Resources, Hohai University, Nanjing 210098, Jiangsu, China
  • Received:2022-11-14 Revised:2023-06-08 Online:2023-08-15 Published:2023-08-24

Abstract:

We applied the two built-in channel routing methods of the WRF-Hydro model (i.e., the diffusive wave and the Muskingum-Cunge methods) to the upstream area of the Shimen Hydrological Station in the Hutubi River Basin and used GFS precipitation data for model input. The difference between the simulated and measured runoff was compared and analyzed using daily flow observations from 2015 to 2019 and annual average flow data from 1978-1983 and 2008-2019 at the Shimen Hydrological Station. We also discussed the simulation effect of the flood evolution method based on the WRF-Hydro model in the Xinjiang inland arid mountainous area. The results show that the simulation effect of the diffusive wave method is generally better than that of the Muskingum-Cunge method. This paper analyzes some characteristics of the two river routing models of WRF-Hydro to simulate floods. The diffusive wave method had better simulation results, but took longer, whereas the Muskingum-Cunge method had less ideal simulation results, but went faster.

Key words: Xinjiang, inland arid area, diffusive wave, Muskingum-Cunge, flood routing