Pannjärve and Vasavere

The Kurtna Kame Field is an environmental conflict area, close to the border of a landscape protection area and the largest, sand pit Pannjärve. High-quality quartz sand (with quartz content exceeding 90%) is pumped from below the ground water level. About one third of the Kurtna Kame Field has been used for road construction.

Nearby is located the glaciofluvial aquifer of the Vasavere buried valley, created in 1971 to intensify the water supply of the Kohtla-Järve urban area. The water is pumped mainly to the town of Ahtme. Together with the hydrogeological impact of the Ahtme underground oil shale mine, from where water is pumped out, it has caused adrastic lowering of the water level of up to 6 m in the Kurtna lakes, in Lake Martiska and in Lake Kuradijärv .

The water from Lake Konsu is used to supply the factories of Kohtla-Järve. Water from the Estonia oil shale mine, directed to the western Kurtna lakes, has caused hydrogen sulphide pollution, damaging the bottom fauna. During the fire in the Estonia mine in 1988, the Rannapungerja River and the northern part of Lake Peipsi were polluted by phenols. Several fires in the Oru peat milling field have been extinguished using water from Lake Valgjärv, causing a lowering of the water level by 1 m.

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