WATER QUALITY INDEX IN SOME ‘TURVO SUJO’ RIVER TRACKS, VIÇOSA - MG

• Autor(a) principal: Nunes, Daniele Gonçalves
• Data de Publicação: 2011
• Outros Autores: Silva, Demetrius David da, Matos, Antonio Teixeira de
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Engenharia na Agricultura
• Texto Completo: https://periodicos.ufv.br/reveng/article/view/301
• topic: IQA; qualidade da água; Rio Turvo Sujo

This study was done to assess the water quality of ‘Turvo Sujo’ river along six tracks, starting from the river’s origin till its mouth. There were four campaigns during the dry and rainy seasons. In the dry period campaigns conducted in August 2006 and June 2007, the water quality index (WQI) of each track varied between very bad to average in August 2006, with track II being the worst quality (upstream encounters with Grama stream), and bad to average in June 2007. In the rainy season campaigns carried out in November 2006 and February 2007, the WQI varied between very bad to excellent in February 2007, and average in all tracks in November 2006. The variables that most depreciated WQI were thermotolerant coliforms, biochemical oxygen demand, turbidity and dissolved oxygen, suggesting discharge of effluents with high organic matter.