O Uso de geotecnologias aplicadas à gestão dos recursos hídricos na bacia hidrográfica do açude mucambo – Ceará

Abstract

The main source of supply of the urban area of Mucambo-CE and the Mucambo dam, built before the emancipation of the municipality in 1953. The aforementioned reservoir was built by the local population, with the help of the city hall, however, no record of this reservoir was found. The reservoir is considered strategic for the population and as a consequence of its importance, a technical inspection was carried out in loco where an accelerated process of eutrophication of the remaining water was identified, as well as several environmental impacts in the hydro and hydrographic basin. Based on remote sensing techniques, three images were processed: in the first image, the basin area of 7,874,724 m² (SRTM image) was delimited; In the second one, the drainage and the hydraulic basin area were estimated to be 423,333 m² (Landsat 7 TM - July 2009 - year of higher rainfall); In the third one the degraded areas were quantified (Landsat 7 TM - July 2011), where it was identified that 32% of the area was deforested, mainly around the reservoir and near the river bed. In the rest of the area (68%) there was some vegetation, which is characterized by Thorny Caducifolia Forest (Caatinga Arbórea).