MORPHOMETRIC ANALYSIS AND ORGANIC CONTRIBUTIONS OF THE BAIANO RIVER MICROBASIN, MUNICIPALITY OF ASSIS CHATEAUBRIAND, BRAZIL

Abstract

The objective of this study was to characterize the morphometry and morphology of the Baiano River watershed, providing essential technical information to assess the viability of sustainable fish farming initiatives. The watershed was delimited using a Digital Elevation Model (DEM), with a spatial resolution of 30 meters. The satellite image processing and calculations of morphometric indicators were performed using the free software QGIS®. The mapping of the excavated ponds was performed using high-resolution Google Earth images, using the QuickMapServices plugin. The watershed has a predominantly flat relief, with a low drainage density, and three hypsometric bands ranging from 220 to 620 meters. The predominant soil types in the watershed are Red Latosol and Red Nitosol. Most of the area is occupied by agricultural activities, especially soybean cultivation. In the micro-basin area, 59 excavated ponds were mapped, totaling 27.76 hectares of water surface. The micro-basin has the potential for the sustainable development of fish farming, taking into account its water resources and the morphological and morphometric characteristics present in the hydrographic micro-basin.