Climate Change Influence on Streamflow Projections Across the Chenab River Basin in Pakistan Under CMIP6 Scenarios

Authors

  • Tabinda Masud UET Peshawar
  • Asif Khan Department of Civil Engineering, University of Engineering & Technology Peshawar, Jalozai Campus, 24240; Pakistan,
  • Mujahid Khan Department of Civil Engineering, University of Engineering & Technology Peshawar, 25120, Pakistan
  • Muhammad Ajmal Department of Agricultural Engineering, University of Engineering & Technology, Peshawar 25120, Pakistan

Keywords:

CMIP6-GCMs, SWAT model, Climate change, Extreme indices, Streamflow projections

Abstract

This study investigated the historical and projected climatic and hydrological patterns in the high-altitude Chenab River Basin for the 21st century. It has been observed that the average temperature (30.61 °C) for the 1981-2010 baseline period is expected to increase by 2.00 °C (2.65 °C) in the mid-century (2041-2070) and 2.82 °C (5.05 °C) in the late-century (2071-2100) under SSP 2-4.5 (SSP 5-8.5). Similarly, a 3.74% and 4.71% increase in precipitation is concluded for the mid and late centuries under SSP 2-4.5, while a 7.09% and 13.03% increase is recorded under SSP 5-8.5. Although average annual flows are projected to increase by 9.52–20.82% relative to the base period by 2100, a decline is expected in the late century compared to mid-century. This analysis reveals a significant rise in the peak flow's amplitude and an earlier accomplishment. As a result, hydrological extremes are likely to intensify. The optimal management of hydrological resources in the basin will require substantial modifications to the construction and maintenance of storage reservoirs, irrigation withdrawals, flood alleviation, drought control measures, and action plans.

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2026-04-01

How to Cite

Masud, T., Khan , A., Khan, M., & Ajmal, M. (2026). Climate Change Influence on Streamflow Projections Across the Chenab River Basin in Pakistan Under CMIP6 Scenarios. Journal of Himalayan Earth Sciences, 59(1), 142-159. Retrieved from http://ojs.uop.edu.pk/jhes/article/view/2145

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