Water Quality Determination of Küçükçekmece Lake, Turkey by Using Multispectral Satellite Data

Abstract

This study focuses on the analysis of the Landsat-5 TM + SPOT-Pan (1992), IRS-1C/D LISS + Pan (2000), and Landsat-5 TM (2006) satellite images that reflect the drastic land use/land cover changes in the Küçükçekmece Lake region, Istanbul. Landsat-5 TM satellite data dated 2006 was used for mapping water quality. A multiple regression analysis was carried out between the unitless planetary reflectance values derived from the satellite image and in situ water quality parameters chlorophyll a, total phosphorus, total nitrogen, turbidity, and biological and chemical oxygen demand measured at a number of stations homogenously distributed over the lake surface. The results of this study provided valuable information to local administrators on the water quality of Küçükçekmece Lake, which is a large water resource of the Istanbul Metropolitan Area. Results also show that such a methodology structured by use of reflectance values provided from satellite imagery, in situ water quality measurements, and basin land use/land cover characteristics obtained from images can serve as a powerful and rapid monitoring tool for the drinking water basins that suffer from rapid urbanization and pollution, all around the world.

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

“…This study is original for Turkey, as it introduces for the first time the capability of satellite images for WQ assessment in a pilot study area, namely the Darlık Dam. The methodology employed for the Darlık Dam WQ analysis using RS and GIS analysis and multiregression techniques proved to be as successful as the one done for the Küçükçekmece Water Quality Analysis [1] because we could obtain WQ maps for the dam lake and investigate the multitemporal changes in its watershed area, and derive conclusions that will assist provincial administrators in their studies to preserve the WQ in the Darlık Dam. This research can be extended by using other complementary satellite data in the future.…”

“…One of these reservoirs is Küçükçekmece Lake, situated at sea level and separated from the sea by a shallow prominence formed by the sand and gravel swept away from the coast. The water quality (WQ) of the Küçükçekmece Lake was studied previously by the authors [1]. In contrast to Küçükçekmece Lake, Darlık Lake is a manmade dam lake, which was constructed on the Darlık Creek between the years 1986 to 1988 for domestic and industrial water supply purposes.…”

“…The academic research community has successfully demonstrated the applicability of satellite sensors to elucidate a variety of ecological processes. In the referred studies, reliable empirical relationships were developed between Landsat satellite data (http://landsat.gsfc.nasa.gov) and ground measurements of WQ [1,3,4,5,6].…”

Study on Spatiotemporal Variability of Water Quality Parameters in Florida Bay Using Remote Sensing

“…By increasing the amounts of dissolved inorganic materials, the peak of visible reflectance relocates from green band to red band [21]. Alparslan et al [22] obtained the amount of turbidity from Band1, Band2, Band3, Band4, Band5 and Band7 of Landsat-5 TM Satellite Image. He et al [23] used a combination of Landsat TM bands 2, 3, 6 and 7 to correlate with the in situ turbidity measurements.…”

“…Also, Alparslan et al [10] used the first four bands of Landsat 7-ETM satellite data to map total phosphate in Ömerli Dam, Turkey. Later, Alparslan et al [22] using Band1, Band2, Band3, Band4, Band5 and Band7 of Landsat-5 TM Satellite Image obtained the amount of total phosphorus concentration. Lim and Choi [13] used bands 2, 3, 4, and 5 of Landsat-8/OLI, and constructed 3 multiple regression models by selecting both single bands and band ratios, and obtained significant correlation coefficients.…”