Abstract
New monitoring results (2000-2002) of the thermomineral water outflow and quality regime of the Nikolicevo Spa (eastern Serbia) show that, during 30 years, a scaling process occurred and decreased the well outflow by app. 80%, as a consequence of well deterioration and reservoir depletion. Consequently (slower water movement), the water temperature increased by 1,5-2?C. Stabile values of the outflow and water quality parameters, registered during new monitoring, show an insignificant influence of the annual meteorological cycle on the outflow and quality regime. According to its chemical composition, the water is sodiumbicarbonate- fluoride, oligomineral and isothermal and a wide spectrum of applications is available. The limit for an efficient exploitation and application of the water is the current low outflow rate, so the drilling of new wells is recommended.
Highlights
There is a natural occurrence of thermomineral water in the village Nikoli~evo, in eastern Serbia, within the “Timok eruptive region”, app. 7–8 km north–east of the town of Zaje~ar
In the seventies of the 20th century, an extraordinary outflow and quality of thermomineral water of the Nikoli~evo Spa were stated by drilling holes
Thermomineral water of Nikoli~evo Spa was tapped by two wells, at a depth of 100 to 160 m
Summary
There is a natural occurrence of thermomineral water in the village Nikoli~evo, in eastern Serbia, within the “Timok eruptive region”, app. 7–8 km north–east of the town of Zaje~ar. In the seventies of the 20th century, an extraordinary outflow and quality of thermomineral water of the Nikoli~evo Spa were stated by drilling holes. The geological structure of the Nikoli~evo Zone is comprised of Barremian–Aptian carbonate forms, flysh, volcanoclastic and volcanic rocks of Upper Cretaceous age and younger Miocene and Quaternary deposits (Fig. 1).
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