Lithological exploration for potable water lens in the Indus Delta and their connectivity with freshwater seepage and environmentopen access
- Authors
- Abro, Zia-Uddin; Shah, Sabab Ali; Qureshi, Abdul Latif; Soomro, Asadullah; Jamali, Muhammad Afzal; Kim, Tae-Woong; Alharbi, Raied Saad; Rahim, Siti Azira Abd
- Issue Date
- Feb-2024
- Publisher
- IWA Publishing
- Keywords
- electrical resistivity sounding; groundwater; Indus Delta; lithology; seawater intrusion
- Citation
- Water Practice and Technology, v.19, no.2, pp 476 - 488
- Pages
- 13
- Indexed
- SCIE
SCOPUS
- Journal Title
- Water Practice and Technology
- Volume
- 19
- Number
- 2
- Start Page
- 476
- End Page
- 488
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/118349
- DOI
- 10.2166/wpt.2023.232
- ISSN
- 1751-231X
- Abstract
- The world’s seventh-largest Indus Delta is gripped to extinction due to a continuous shortage of Indus River flows. The drastic fall in the ecology and coastal habitat due to the lack of freshwater flows, and the land degradation due to seawater intrusion is a simultaneous creeping hazard. The study aims to explore the potable water lens and their possible connection with seepage from freshwater bodies (rivers/ canals) to sustain them for drinking and agriculture use of 2 million populations. The study employed the electrical resistivity survey and 10 selected points along the Indus River at depths up to 300 m to baseline the rock type and groundwater quality; and drilling of bore logs at a maximum depth of 25 m. The result confirms the availability of two sandstone layers with marginal freshwater along the river and in some pockets; however brackish water was observed along the coast in a limestone formation. It is evident from the results that surface seepage from the Indus River and non-per-ennial ‘Pinyari’ canal has a progressive influence on the improvement of groundwater quality and confinement of seawater intrusion. © 2024 The Authors.
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