Likely Rainfall for Alegre-ES by the Gamma Probability Distribution

The objective of this study was to estimate rainfall expected for Alegre-ES by the gamma distribution. We used rainfall data covering the period from 1940 to 2007. The parameters α and β of the gamma distribution were obtained by the method of maximum likelihood. Probable rainfall were obtained by the inverse function. We used the test of Kolmogorov-Smirnov test to check the fit of estimated to observed data. The results indicated that the gamma distribution provided a good fit to the data of rain to Alegre-ES can therefore be used to estimate the likely monthly rainfall.