Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
Skip to main content

Assessment of the lake water quality using Landsat 8 OLI imagery: a case study of Manchar Lake, Pakistan

  • Original Paper
  • Published:
Arabian Journal of Geosciences Aims and scope Submit manuscript

Abstract

This study was carried out to apply a cost-effective remote sensing-based methodology to predict water quality parameters of Manchar Lake in Pakistan. Water quality models were developed using level 2 Landsat 8 OLI satellite data for the lake, where regular water quality monitoring is limited in time and space. This study focused only on three water quality parameters (WQPs) with optical properties that can be directly captured using remote sensing tools including total dissolved solids (TDS), total suspended solids (TSS), and turbidity. Twenty-one water samples were collected at various times for pre-monsoon (April 2019), monsoon (August 2019), and post-monsoon (November 2019) seasons on or within 2–3 days the satellite overpass dates. Among them, six samples were randomly selected for models’ validation. Regression analysis was performed on the remaining samples to obtain WQPs’ empirical relationships with bands’ surface reflectance employing single and different band combinations. The linear, logarithmic, and first- and second-degree polynomial regression models were developed and based on the highest R2 values, the “best” models were selected. TDS models performed comparatively well with R2 = 0.9731, 0.7359, 0.7969 in pre-monsoon, monsoon, and post-monsoon periods, respectively. The R2 for the “best” TSS models were 0.7721 (pre-monsoon), 0.8561 (monsoon), and 0.5868 (post-monsoon), whereas their values for turbidity were 0.4807 (pre-monsoon), 0.5212 (monsoon), and 0.6404 (post-monsoon) suggesting relatively weak model performances. Models’ validations produced maximum/minimum root mean square errors of 515/246.9 mg/L, 9.53/8.78 mg/L, and 27.99/13.86 NTU, respectively, for TDS, TSS, and turbidity. Statistically significant values of R2 indicated the suitability of models to predict WQPs of Manchar Lake. However, the models’ performance was reduced in the post-monsoon season, but R2 values were still greater than 0.5. From these results, it can be expected that GIS and remote sensing-based water quality modeling will eventually provide convenient solutions for Manchar Lake’s management and long-term planning.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
$34.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or eBook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

References

Download references

Acknowledgements

The authors of this paper are thankful to the US Pakistan Center for Advanced Studies in Water (USPCASW) for funding this research and Dr. Rick Bereit, English writing center instructor at the United States Air Force Academy, Colorado Springs, CO, USA, for English language proofreading and flow/organization of this manuscript.

Funding

This study’s research funding was obtained from the United States Agency for International Development (USAID).

Author information

Authors and Affiliations

Authors

Contributions

Uzma Imran: conceptualization, methodology, GIS and remote sensing, writing—original draft. Arjumand Zaidi: writing, GIS and remote sensing, supervision. Rasool Bux Mahar: supervision. Waheed Ali Khokhar: investigation, GIS and remote sensing.

Corresponding author

Correspondence to Uzma Imran.

Ethics declarations

Conflict of interest

The authors declare no competing interests.

Additional information

Responsible Editor: Biswajeet Pradhan

Appendices

Appendix 1

Table 2

Table 2 Seasonal variations in reflectance and water quality data at various sampling sites of Manchar Lake

Appendix 2

Table 3

Table 3 Water quality models developed using regression analyses

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Imran, U., Zaidi, A., Mahar, R.B. et al. Assessment of the lake water quality using Landsat 8 OLI imagery: a case study of Manchar Lake, Pakistan. Arab J Geosci 15, 1094 (2022). https://doi.org/10.1007/s12517-022-10372-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s12517-022-10372-3

Keywords