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TheScientificWorldJOURNAL
Volume 10, Pages 1293-1306
http://dx.doi.org/10.1100/tsw.2010.125
Research Article

An Investigation on Water Quality of Darlik Dam Drinking Water using Satellite Images

1Marmara Research Center, Earth and Marine Sciences Institute, TUBITAK, 41470 Gebze, Kocaeli, Turkey
2Department of Remote Sensing, Faculty of Civil Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
3Center for Satellite Communication and Remote Sensing, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey

Received 4 January 2010; Revised 13 May 2010; Accepted 19 May 2010

Academic Editor: Howard P. Hanson

Copyright © 2010 Erhan Alparslan et al.

Abstract

Darlik Dam supplies 15% of the water demand of Istanbul Metropolitan City of Turkey. Water quality (WQ) in the Darlik Dam was investigated from Landsat 5 TM satellite images of the years 2004, 2005, and 2006 in order to determine land use/land cover changes in the watershed of the dam that may deteriorate its WQ. The images were geometrically and atmospherically corrected for WQ analysis. Next, an investigation was made by multiple regression analysis between the unitless planetary reflectance values of the first four bands of the June 2005 Landsat TM image of the dam and WQ parameters, such as chlorophyll-a, total dissolved matter, turbidity, total phosphorous, and total nitrogen, measured at satellite image acquisition time at seven stations in the dam. Finally, WQ in the dam was studied from satellite images of the years 2004, 2005, and 2006 by pattern recognition techniques in order to determine possible water pollution in the dam. This study was compared to a previous study done by the authors in the Küçükçekmece water reservoir, also in Istanbul City.