BALANÇO HÍDRICO CLIMATOLÓGICO PARA O MUNICÍPIO DE RIO VERDE, GOIÁS

Abstract

The water balance is the result of the amount of water that enters and exits a given layer of soil in a given time interval, which characterized the dry periods and wet a place defined, as part as a tool for the agricultural planning and environmental. This study aimed to determine the hydric balance climatological (BHC) in the city of Rio Verde, GO in the period from 2012 to 2015. The BHCN was developed by the method of Thornthwaite and Mather. Was used the water capacity available to 100 mm. The annual precipitation is 1,567 mm, and potential evapotranspiration was of 1,430 mm. The municipality presented a trend climate of six months of water deficiency (May to October) and six months of water excess (November to April), totaling 441 and 578 mm, respectively. For the management of arable land in the region the use of irrigation systems is needed to meet the demand for water, especially in the period of lower availability and higher demand, therefore, to know when and how much to irrigate, beyond the rational use of water.