Study of Variations in Annual Rainfall Across Rain Gauge Stations in Mandya District

摘要

A study of variation in annual rainfall (mm) across different rain gauge stations (RGS) located in Mandya district was considered for a period of 50 years from 1964 - 2013. The results revealed that the central part of Mandya district covering most ofthe RGS stations coming under Nagamangala, Mandya and Pandavapura taluks received below average (<700 mm) rainfall, whereas, RGS stations located in Maddur and Malavalli taluks towards east as well as K.R Pet and Srirangapatna taluk towards western parts of Mandya district received above average (>700 mm) rainfall during the study period. The significance of trend assessed by Mann-Kendall test revealed that only five RGS stations viz., Seelunere, Halagur, Lingarajachatra, Honakere and Melkote had significant linear trend. Further, Seelunere and Halagur showed decreasing trend, while, Lingarajachatra, Honakere and Melkote showed an increasing trend in annual rainfall over the years.