Lowering of Ground Water Table around River Ravi in Lahore: Aggravated by Indus Water Treaty

Rai Waqqs Azfar Khan, Naeem Shahzad, Sadaf Mumtaz

Abstract


River Ravi was major source of recharging groundwater table around Lahore City. However, scenario has totally been changed after indus water treaty (IWT) between India and Pakistan. In dry season, almost 60 K.M long reach of river (Ravi siphon to Baloki Headwork) passing nearby the Lahore city is converted into drain. The groundwater table which is being recharged from untreated urban as well as industrial sewage is becoming highly contaminated. IWT was signed without carrying out any kind of Environmental Impact Assessment study. Due to this low flow condition many other environmental parameters are being affected, for example, drastically lowering of groundwater table, contamination of ground as well as surface water, degradation of esthetic value of river, endangered aquatic flora and fauna, usage of contaminated water for irrigation, degradation of human health, and increased water borne diseases. These all problems have been associated with low flow in River Ravi. In this research, the effect of low flow condition on the lowering of groundwater table is studied in detail in which groundwater table data of the past 60 years is analysed. Very obviously it can be concluded that there is drastic change in groundwater table depth before and after IWT. As a compensation and mitigation measure very essential recommendations is suggested that extra amount of water should be added at Ravi Siphon. This will not only mitigate sewage dilution problem rather it will also enhance recharging capability of River Ravi.

Aus. & NewZe J. Soci Busi. Env. Sus. Vol 4(2), October 2018, P 65-72


Keywords


Adverse Effects; Environmental Impact Assessment; Groundwater; Indus Water Treaty; Low Flow Condition; River Ravi

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