Share This Article:

Impact of Climate Change on Water Resources Management in the Lower Chao Phraya Basin, Thailand

Abstract Full-Text HTML XML Download Download as PDF (Size:1751KB) PP. 53-58
DOI: 10.4236/gep.2015.310009    1,885 Downloads   2,387 Views   Citations
Author(s)    Leave a comment

ABSTRACT

Climate change and associated rising in sea water level have affected the salinity in many rivers around the world. It has an effect on the embouchure adjacent with the sea, which is called the salinity intrusion problem. This study investigated the effects of climate change on sea water level that affects the hydraulic conditions, salinity, water supply and agricultural areas in the lower Chao Phraya River by MIKE 11 model has been used. The study covered the area from Chao Phraya Dam (barrage), Chai Nat Province to the river estuary, Samut Prakan Province. The model was divided into two parts, hydrodynamic module and advection-dispersion model. Calibration of each part was done by adjusting its important coefficients. It was observed that the Manning’s coefficient (n) and coefficient dispersion of mass were in the range of 0.025 - 0.40 and 800 - 1600 m2/s, respectively. The results of comparison between models and observation data revealed order of forecasting error (R2) with the range of 0.76-0.99 for water level and 0.73 - 0.86 for salinity. The RCP 8.5 scenario from IPCC report was simulated. It was found that sea water level rising in was 1.16 m in the year of 2100, and salinity at SamlaePump Station was risen to 0.37 - 0.75 g/l. The value of 0.25 g/l exceeding standard and the pointed tip of salinity was at Koh Rain District, Ayutthaya Province (137 km from Chao Phraya Dam: CPD). For agricultural sectors, the value of 0.20 g/l exceeding standard and the pointed tip of salinity was at Ban Mai District, Ayutthaya Province (123 km from CPD). Results obtained from this study will give the guideline in raw water resources management for water supply and agricultural in Chao Phraya River Basin.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Wongsa, S. (2015) Impact of Climate Change on Water Resources Management in the Lower Chao Phraya Basin, Thailand. Journal of Geoscience and Environment Protection, 3, 53-58. doi: 10.4236/gep.2015.310009.

References

[1] Kirby, M.J. (1987) Modelling Some Influences of Soil Erosion, Landslides and Valley Gradient on Drainage Density and Hollow Development. Catena Supplement, 10, 1-11.
[2] Wicks, J.M. and Bathurst, J.C. (1996) SHESED: A Physical Based, Distributed Erosion and Sediment Yield Component for the SHE Hydrological Modelling System. Journal of Hydrology, 175, 213-238. http://dx.doi.org/10.1016/S0022-1694(96)80012-6
[3] DHI Water and Environment (2000) MIKE11: A Modeling Sys-Tem for Rivers and Channels—User Guide, Denmark.
[4] Wongsa, S. and Shimizu, Y. (2004) Modelling Artificial Channel and Landuse Changes and Their Impact on Floods and Sediment Yield to the Ishikari Basin. Hydrological Processes, 18, 1837-1852. http://dx.doi.org/10.1002/hyp.1450
[5] Wongsa, S. (2004) Distributed Model for Catchment Scale Simulation of Runoff and Sedi-ment Transport. Ph.D. Thesis, Hokkaido University, Japan.
[6] Wassmann, R., Hein, N.X., Hoanh, C.T. and Tuong, T.P. (2004) Sea Level Affecting Vietnamese Mekong Delta: Water Elevation in the Flood Season and Implications for Rice Production. Climate Change, 66, 89-107. http://dx.doi.org/10.1023/B:CLIM.0000043144.69736.b7
[7] Wongsa, S. and Ekkawatapanit, C. (2009) Effect of Sea Water Level Change on the Management in the Lower Thachin River. Report for ESS Program, King Mongkut’s University of Technology, Thonburi, Thailand.
[8] Wongsa, S., Ekkawatapanit, C. and Treerittiwitaya, K. (2010) Effect of Sea Water Level Change on the Management in the Lower Thachin River. Proceedings of the International Symposium on Coastal Zones and Climate Change: As-sessing the Impacts and Developing Adaptation Strategies, Australia.
[9] Wongsa, S., Kamolsin, P. and Inkliang, K. (2010) Effect of Sea Water Level Change on the Estuaries Management in the Lower Thachin and Mae Klong Rivers. Proceedings of GMSTEC 2010: International Conference for a Sustainable Greater Mekong Subregion, Bangkok, Thailand.
[10] Sueathung, S. and Wongsa, S. (2015) Effect of Sea Water Level Change on the Water Resources Management and Agriculture in Chao Phraya River. Proceedings of NCCE2015, Chonburi, Thailand.
[11] http://www.ipcc.ch/

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.