Dr. K. Madhusudhan Reddy, Dr. K. Krishnakumar


Rainfall is the one of the important source for the all needs to the people in the study area. It lies on the national
highway no 65; situated 100 kilometers from the Hyderabad. The present study deals with the statistical analysis of
29 years rainfall data, seasonal, annual, monthly trend of the rainfall by applying linear regression model. The study reveals that coefficient of
skewness is positive. Highest mean, median, standard deviation, variance, coefficient of variance, and coee􀃶cient of skewness is 159.8 mm,
156.8 mm, 124.3 mm, 15454.5, 2.84 and 2.08 respectively. Of the average total rainfall 70% was contributed in monsoon; and in post
monsoon 20%, in pre monsoon 8% and winter 2% was contributed in the study area. It is observed that decreasing trend is happened in
annual, monsoon, winter and pre monsoon seasons where as in post monsoon there was no trend. Average highest monthly rainfall was
received in the month of September in the monsoon season and lowest rainfall was recorded in the month of December in the post


Rainfall, Trend, statistical analysis, Katangore mandal

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