CALCULATING AND BUILDING INUNDATION MAPS CORRESPONDING TO FLOOD FREQUENCIES IN GIANH RIVER BASIN

  • Vu Van Thang, Tran Dinh Trong, Phung Duc Chinh, Jerome Faucet

Tóm tắt

Gianh is the largest river basin in Quang Binh province with the flood season lasts about four months, from August to November. The number of floods and their magnitude vary widely by the years and from upstream to downstream of the river. This article presents a set of inundation maps corresponding to flood frequencies of 1%, 2%, 5%, 10%, 20% in the Gianh river basin. The results show that flooding happens more frequent in both river banks and downstream areas of Gianh river basin. As Gianh River runs mainly along Tuyen Hoa District, the communes along the river banks of the district are seriously affected by floods. The article also presents a calculated inundation area and inundation rate of the area of districts in the Gianh river basin, corresponding to flood frequencies of 1%, 2%, 5%, 10%, 20%.

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Phát hành ngày
2021-06-14