Effects of groundwater exploitation on the Borjomi mineral water reservoir in Georgia
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The mineral water at Borjomi has been bottled since the 19th century. Currently, the production comes from the regulated artesian flow of 11 boreholes. The total yield is about 540 m3/day. The mineral water is of sodium, hydrogen carbonate and CO2 type with mineralization up to 7.5 g/l and a temperature up to 40°C. Long-term observation has enabled the history of the structure of the Borjomi mineral water to be reconstructed from the beginning of its exploitation until the present. The hydrogeological structure of the Borjomi locality is very complex, but on the regional scale it occupies a relatively small area. The hydraulically well-defined and closed structure allows a simple conceptual model for each of the three main sectors to be designed. These are, namely, the Central, the Vaschlovani and the Likani sectors. The long-term extraction limits are about 190 m3/day in the Central sector, 300 m3/day in the Vashlovani sector and 77 m3/ day in the Likani sector.
KeywordsBorjmomi Thermal mineral water Water exploitation Water-rock interaction
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