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

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

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. Copyright Springer Science+Business Media Dordrecht 2013

Suggested Citation

  • Ko-Fei Liu & Ying-Hsin Wu & Yi-Chin Chen & Yu-Jia Chiu & Shang-Shu Shih, 2013. "Large-scale simulation of watershed mass transport: a case study of Tsengwen reservoir watershed, southwest Taiwan," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 67(2), pages 855-867, June.
    • Handle: RePEc:spr:nathaz:v:67:y:2013:i:2:p:855-867
    DOI: 10.1007/s11069-013-0611-4
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    References listed on IDEAS

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    1. Fan-Chieh Yu & Tien-Chien Chen & Meei-Ling Lin & Chien-Yuan Chen & Wen-Hai Yu, 2006. "Landslides and Rainfall Characteristics Analysis in Taipei City during the Typhoon Nari Event," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 37(1), pages 153-167, February.
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