Abstract
Banat River Area specific climate is characterized by moderate temperature and high precipitation amounts, which affect the surface water quality. Since Secu Lake, located on Valley Bârzava provides drinking water to Reºiþa city, the raw water turbidity variation was analyzed depending on changes in climatic parameters. The study is based on monitored values of this quality indicator, within two years (December 2008-December 2010). Deviations from normal climatic limits are frequently caused by CO2 concentration increasing in the atmosphere and massive deforestation determined during the analyzed period, increases in rainfall, with influences on the Lake Secu water turbidity. On the other hand, the works on the Bârzava River course, have contributed to changes in turbidity, by dislodging sand, gravel and various residues. Analysis of this indicator was performed in order to assess the water quality and the necessity of drinking water correction.
Keywords: water; turbidity; thermal regime; rainfall regime; storage lake; hydrographic basin