Abstract
Results of many studies indicate that global water resources will be subjected to severe stress as a result of climate change; this is attributed to projected changes that would occur in the component processes of the hydrological cycle. The gap between water supply and demand for water is expected to widen. This will have serious implications on water supply for urban and agricultural uses. Analysing the interaction of climate and water resources helps to devise strategies for mitigating negative impacts by proper water management. In this paper, an assessment of likely changes in streamflow in the Chaliyar river in Kerala for the decade 2040–2050 due to projected climate change is performed. Soil and Water Assessment Tool (SWAT) is used for hydrological modeling of the river basin. The outputs of the regional climate model (RCM) Remo2009 (MPI) are corrected for biases and then input to the SWAT. The future scenarios considered are Representative Concentration Pathways, RCP4.5 and RCP8.5. Chaliyar river, the fourth longest river in Kerala, serves as the source of water predominantly for agricultural and domestic uses. Results obtained from the model can be used to assess the water supply scenario in the river basin in the future. The findings of this study would be very useful for devising strategies for the effective management of available water resources in the river basin.
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Ansa Thasneem, S., Thampi, S.G., Chithra, N.R. (2021). Assessment of Variation of Streamflow Due to Projected Climate Change in a Water Security Context: A Study of the Chaliyar River Basin, India. In: Babel, M., Haarstrick, A., Ribbe, L., Shinde, V.R., Dichtl, N. (eds) Water Security in Asia. Springer Water. Springer, Cham. https://doi.org/10.1007/978-3-319-54612-4_17
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