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Unveiling the Role of Monsoon Rains on the Water Quality of River Indus
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  • Hafiz Usama Imad,
  • Arsalan Abro,
  • Ashfaque Ahmed Pathan,
  • Lal Chand Marvari,
  • Abdul Salam,
  • Murtaza Hussain
Hafiz Usama Imad
Mehran University of Engineering & Technology

Corresponding Author:[email protected]

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Arsalan Abro
Mehran University of Engineering & Technology
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Ashfaque Ahmed Pathan
Mehran University of Engineering & Technology
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Lal Chand Marvari
Mehran University of Engineering & Technology
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Abdul Salam
Mehran University of Engineering & Technology
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Murtaza Hussain
Mehran University of Engineering & Technology
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Abstract

Water plays an important role in maintaining life on the earth. Water pollution poses a significant risk to humans and other elements of the ecosystem. Limited availability of fresh water emphasizes using it judiciously and it becomes imperative to protect and conserve water sources. Rainfall is one of the important sources of water recharge in water bodies, which ultimately is consumed for various activities. However, runoff generated because of these rainfall events flows over a variety of lands before entering into these water bodies, causing intrusion of several pollutants including pesticides, fertilizers, organic matter, nutrients, manure, and other minerals, subsequently polluting the water bodies. This study explores the impact of monsoon rains on the water quality of the river Indus at upstream and downstream of Kotri Barrage. Water samples were collected from upstream and downstream of Kotri Barrage, and analyzed for pH, Total Dissolved Solids (TDS), Electrical Conductivity (EC), Total suspended solids (TSS), hardness, turbidity, and chloride concentrations. Results indicated the alteration of all parameters in the post-monsoon season. pH and hardness of the river decreased while TSS, turbidity, TDS, and EC increased in the post-monsoon season. The chloride concentration and acidity of the river were slightly increased after the rainfall events. Notably, TSS (Total Suspended Solids) and turbidity values exceeded the WHO limits, indicating higher levels of suspended particles and cloudiness in the water during the post-monsoon season. The findings of this study collectively underscore the influence of various factors contributing to the deteriorating water quality parameters during the post-monsoon season.