Determination of Irrigation Performance of Water User Associations in the Vicinity of Sarıgöl and Alaşehir Using Remote Sensing Techniques

Authors : Bekir Sıtkı KARATAŞ, Erhan AKKUZU, Musa AVCI

Pages : 287-296

View : 12 | Download : 8

Publication Date : 2007-10-01

Article Type : Research Paper

Abstract :The aim of this research was to determine the irrigation performance of Sarıgöl, Bağ, and Üzüm Water User Associations insert ignore into journalissuearticles values(WUAs); in the vicinity of Sarıgöl and Alaşehir using remote sensing techniques. For this purpose, the performance of the irrigation system for the 2004 irrigation season insert ignore into journalissuearticles values(May to September); was determined according to 5 indicators, namely overall consumed ratio insert ignore into journalissuearticles values(ep);, relative water supply insert ignore into journalissuearticles values(RWS);, depleted fraction insert ignore into journalissuearticles values(DF);, crop water deficit insert ignore into journalissuearticles values(CWD);, and relative evapotranspiration insert ignore into journalissuearticles values(RET);. Potential and actual evapotranspiration parameters used in determining these indicators were estimated according to the SEBAL insert ignore into journalissuearticles values(Surface Energy Balance); method using NOAA-16/AVHRR images. Seasonal averages of Sarıgöl, Bağ, and Üzüm WUAs calculated from the results were, respectively, 0.82, 0.88, and 1.26 for ep; 1.21, 1.13, and 0.94 for RWS; 0.53, 0.59, and 0.68 for DF; 45.61, 42.44, and 45.81 mm month-1 for CWD; and 0.64, 0.67, and 0.64 for RET. According to the seasonal average values of all the performance indicators, the irrigation performance of all WUAs was usually poor, and only the depleted fraction indicator for Üzüm WUA was within the range of acceptability. Thus, performance indicators showed that less irrigation water was supplied to WUAs than was needed.
Keywords : Irrigation performance, remote sensing, SEBAL