Effects of Climate Change on Streamflow in Kon – Ha Thanh River Watershed, Vietnam

8 pages•Published: September 20, 2018

Ngoc Duong Vo, Thanh Hao Nguyen, Huy Cong Vu, Philippe Gourbesville and Quang Binh Nguyen

Abstract

Climate change is a complex problem and becoming the leading challenge for humankind in the 21st century. It will affect almost aspects of human well-being. Therefore, assessing climate change impacts on water resources and proposed solutions to respond to climate change is urgent and necessary. This study applied the SWAT model (Soil and Water Assessment Tool) and GIS (Geographic Information System) technique to simulate water flows due to the impact of climate change. The models were applied for Kon – Ha Thanh river catchment, located in Vietnam where is considered as one of the countries most affected by climate change. The SWAT model is calibrated and validated well using daily flow data with the Nash-Sutcliffe and correlation coefficients are 0.77 and 0.88, respectively. Two scenarios from Vietnamese government (RCP 4.5 and RCP 8.5) are used to analyze the variation of stream flow in three periods: 2016- 2035, 2045-2065, and 2080-2100. The results show that the flow in Kon – Ha Thanh rivers will vary complicatedly and severely under the impact of climate change. This flow may increase roughly 150.8% in flood season and reduce around 11.8% in dry season. Furthermore, the study also demonstrates that there are the changes in the flood dynamics as well as the hydrological shift of this region. This study presents an operational approach to integrate the results from the impacts of climate change to flood protection measures that would be useful in sustainable planning and devising resilience strategies.

Keyphrases: climate change, kon ha thanh river, rcp 4.5 and rcp 8.5, swat model

In: Goffredo La Loggia, Gabriele Freni, Valeria Puleo and Mauro De Marchis (editors). HIC 2018. 13th International Conference on Hydroinformatics, vol 3, pages 2233-2240.

Links:	https://easychair.org/publications/paper/ckLk
	https://doi.org/10.29007/1hrc

BibTeX entry

@inproceedings{HIC2018:Effects_Climate_Change_Streamflow,
  author    = {Ngoc Duong Vo and Thanh Hao Nguyen and Huy Cong Vu and Philippe Gourbesville and Quang Binh Nguyen},
  title     = {Effects of Climate Change on Streamflow in Kon – Ha Thanh River Watershed, Vietnam},
  booktitle = {HIC 2018. 13th International Conference on Hydroinformatics},
  editor    = {Goffredo La Loggia and Gabriele Freni and Valeria Puleo and Mauro De Marchis},
  series    = {EPiC Series in Engineering},
  volume    = {3},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2516-2330},
  url       = {/publications/paper/ckLk},
  doi       = {10.29007/1hrc},
  pages     = {2233-2240},
  year      = {2018}}

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