ABSTRACT
The objective of this work was to study the distribution of probability of reference evapotranspiration for designing irrigation systems in Cruz das Almas-BA. The maximum annual values were accumulated for periods of 5, 10, 15, 20 and 30 days and were adjusted to Normal, Lognormal and Beta distribution. Through the accumulated Normal distribution, values of evapotranspiration for several probability levels were generated for the region studied.
Key words:
evapotranspiration; irrigation; probability