This research aimed to analyze the degradation of the Vila Maria spring, located in the Magano neighborhood in the municipality of Garanhuns in the state of Pernambuco. The municipality's terrain is marked by undulated landform, especially hills, which allied to the accelerated rhythm of urban expansion without adequate planning, resulted in the occupation of risk areas such as slopes as well as environmental protection areas such as the adjacencies of springs. The analysis was carried out through a terrain modeling process in a geoprocessing environment and by data collected on visits to the study area. An analysis of the region's NDVI from years 2008 to 2018 was also performed. The analysis confirmed the Vila Maria spring's water degradation and found that it was aggravated by an inadequate disposal of rainwater through surface water drains which contributed to the intensification of erosive processes that generated a gully in the vicinity. The NDVI analysis found low average values with an increase from 2008 to 2018 during the wet season. This fact can be explained by the constant urban expansion which as has been utilizing slopes from the microbasin for the disposal of rainwater which allied to the constant flow of the Vila Maria spring, provides a constant supply of water to the vegetation cover. Moreover, it was possible to observe the misuse of the spring's water flow by the public administration which has most of its flow integrated to the surface water drainage system and it is disposed at the bottom of the slope going through a high risk of contamination.
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