Flood inundation analysis using a distributed tank model for a flat, low-lying agricultural area undergoing urbanization in Hanoi, Vietnam

Nguyen Manh Hung, Le Van Chinh, Kazuaki Hiramatsu, Harada Masayoshi, Dao Ngoc Tuan

Research output: Contribution to journalArticle

Abstract

In the 2000s, urbanization has extended to approximately 30% of the total upstream area of the Song Nhue Hydraulic Structure Scheme (HSS) in Hanoi, Vietnam, and the Song Nhue HSS area is predicted to become completely urbanized by 2030. In this study, flood inundation analyses were carried out for the upstream area of the Song Nhue HSS. The analyses were conducted using a horizontally distributed continuous tank model. First, the distributed tank model was constructed on the basis of the hydraulic dimensions of rivers, irrigation and drainage canals, gates, and pumping stations, as well as information about land use and the drainage network. Then, six observed flood events with return periods of 2, 3, 5, 10, 30, and 100years were selected from past records and simulated using the model. The comparison between the simulated and the observed upstream water levels in the outlets indicated that the developed model could accurately estimate variations in water levels. Second, a scenario analysis based on predictions of urban growth was conducted using the distributed tank model. The scenario analysis suggests necessary and effective measures that can be taken to prevent flood inundation in the targeted area.

Original languageEnglish
Pages (from-to)52-62
Number of pages11
JournalIrrigation and Drainage
Volume62
Issue numberS1
DOIs
Publication statusPublished - Oct 1 2013

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All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Soil Science

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