Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Assessment of Feasibility of Rainfall-Runoff Simulation Using SRTM-DEM Based on SWMM

SWMM 기반 SRTM-DEM을 활용한 강우-유출 모의 가능성 평가

  • Mirae Kim (Interdisciplinary Program in Landscape Architecture, Seoul National University) ;
  • Junsuk Kang (Interdisciplinary Program in Landscape Architecture, Seoul National University)
  • 김미래 (서울대학교 대학원 협동과정 조경학) ;
  • 강준석 (서울대학교 대학원 협동과정 조경학)
  • Received : 2024.03.22
  • Accepted : 2024.06.14
  • Published : 2024.07.31
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Abstract

The recent increase in impermeable surfaces due to urbanization and the occurrence of concentrated heavy rainfall events caused by climate change have led to an increase in urban flooding. To predict and prepare for flood damage, a convenient and highly accurate simulation of rainfall-runoff based on geospatial information is essential. In this study, the storm water management model (SWMM) was applied to simulate rainfall runoff in the Bangbae-dong area of Seoul, using two sets of topographical data: The conventional topographic digital elevation model (TOPO-DEM) and the proposed shuttle radar topography mission (SRTM)-DEM. To evaluate the applicability of the SRTM-DEM for rainfall-runoff modeling, two DEMs were constructed for the study area, and rainfall-runoff simulations were performed. The construction of the terrain data for the study area generally reflected the topographical characteristics of the area. Quantitative evaluation of the rainfall-runoff simulation results indicated that the outcomes were similar to those obtained using the existing TOPO-DEM. Based on the results of this study, we propose the use of SRTM-DEM, a more convenient terrain data, in rainfall-runoff studies, rather than asserting the superiority of a specific geospatial data.

Keywords

Acknowledgement

본 연구는 환경부의 재원을 지원받아 한국환경산업기술원 "신기후체제 대응 환경기술개발사업(2022003570004)"에 의해 수행되었습니다.

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