POTENCIAL DA ÁREA IRRIGÁVEL DA BACIA HIDROGRÁFICA DO RIO VERDÃO, REGIÃO SUDOESTE DO ESTADO DE GOIÁS

Abstract

The quantification of water availability can promote decision-making in the management and planning of water resources or even in the acquisition of new agricultural areas that have the purpose of making irrigated agriculture. Therefore, the objective of this work was to determine the irrigable area potential of the Rio Verdão hydrographic basin (BHRV), southwest region of the state of Goiás. The grants used were for direct surface capture from February 2019, unlocking the irrigation, pumping, public supply and pisciculture. The specific flow was defined by the current Normative Instruction and the processing of georeferenced data was performed using the ArcGis 10.5 Software. The hydrographic sub-basins with the greatest irrigation potential are those of the São Tomás Rivers (6,471 L s^-1), Verdinho (5,652 L s^-1) and Ponte de Pedra (2,172 L s^-1). There are 125 sub-basins that do not yet have water users. BHRV has water availability to irrigate 33.5% of the area suitable for implantation of irrigation systems distributed over its entire length, except in basins with levels of impairment above 50%. The total irrigable area potential of the basin is 33,898 ha, thus being able to generate approximately 50.4 thousand jobs and income in the region.