Large-scale simulation of watershed mass transport: A case study of Tsengwen reservoir watershed, southwest Taiwan

Ko Fei Liu, Ying Hsin Wu, Yi Chin Chen, Yu Jia Chiu, Shang Shu Shih

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We present the large-scale simulation of watershed mass transport, including landslide, debris flow, and sediment transport. A case study of Tsengwen reservoir watershed under the extreme rainfall triggered by typhoon Morakot is conducted for verification. This approach starts with volume-area relation with landslide inventory method to predict temporal and regional landslide volume production and distribution. Then, debris flow model, Debris-2D, is applied to simulate the mass transport from hillslope to fluvial channel. Finally, a sediment transport model, NETSTARS, is used for hydraulic and sediment routing in river and reservoir. Near the water intake at the reservoir dam, the simulated sediment concentration is in good agreement with the measured one. The proposed approach gives good prediction and should help the management of reservoir operation and disaster prevention.

Original languageEnglish
Pages (from-to)855-867
Number of pages13
JournalNatural Hazards
Volume67
Issue number2
DOIs
Publication statusPublished - 2013 Mar 5

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)

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