International Journal of Environmental Sciences

Volume 5 Issue 4 2015- January 2015    Pages: 794- 801  <<Previous    Next>>

Monitoring Secchi disk transparency of Warasgaon reservoir of Pune by using LISS III sensor

Author Information:

Priti Neelamsetti1, Sangeeta V. Pandit1, Lakshmi N. Kantakumar2
1-Department of Zoology, University of Pune, Pune- 411007.
2-Institute of Environment Education and Research, Bharati Vidyapeeth University, Pune-411043.

ABSTRACT

Secchi disk transparency (SDT) is simplest and efficient measure to monitor water quality of the reservoir. The nutrients from the agriculture fields, sewage from human settlements and industries drain into reservoirs and lakes. It contributes to the increasing level of suspended particles, algae growth, and coloring of water and reduces transparency of water. These changes can be detectable by remote sensors. In this study LISS III sensor of Resourcesat-2 used to model SDT of Warasgaon reservoir, Pune. The green (r = 0.75), red (r = 0.79) and NIR (r = 0.75) bands of LISS III shown good correlation with observed SDT, while band ratios Red/NIR (r = 0.81) and NIR/SWIR (r = 0.81) shown significant correlations. Several linear and multiple linear regression models developed from the in-situ measurements of SDT and the radiance value of LISS III image. The multiple linear regression model based on green, red, NIR and red/SWIR found to be best fit (r = 0.88) to the in-situ data. The results showed Warasgaon reservoir was oligotrophic in condition during the December 2012.

Keywords: Secchi disk transparency (SDT), Liss III, regression model, remote sensing, India

.DOI:10.6088/ijes.2014050100074

© 2015 Copyright by the authors, licensee Integrated Publishing Association.This is an open access article distributed under the Creative Commons Attribution License (3.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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