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“The water has run out a little more than usual: both Neris and Nemunas are up to half a meter shorter than usual in August. Perhaps the situation is a little better in northern Lithuania, in Panevėžys, Pasvalys: the rivers are not as controlled there, but the monitoring is slightly larger across the country than usual in August, “said the head of the Hydrological Observations Division of the Lithuanian Hydrometeorological Service.
According to him, the level of the rivers has been affected by the droughts of the last two years, as well as by the fact that the precipitation was not uniformly distributed during July, but fell as rain.
“The water level suddenly rises, falls again,” he said.
Photo by Lukas Balandus / 15min / Juozas Šimkus
In 2018 and 2019, specialists announced the so-called hydrological drought: this is the limit when the level of the rivers does not reach the lowest average water level recorded in several years during the warm season. According to J.Šimkus, this critical indicator has not been reached this summer, but the situation can only be changed a drier week.
“According to forecasts, precipitation is likely to be around the norm, the situation should not deteriorate sharply, but the water will not increase, that trend will continue until autumn. Now there is very little to declare a hydrological drought, close to that figure The drier, hotter weeks would suffice, and then it would probably be accomplished, “said the expert.
According to him, after reaching the hydrological drought, the minimum conditions for the survival of the ecosystem are no longer guaranteed, and the fish are at risk in the first place.
“Fish is the biggest threat, because a small amount of water first of all means an increase in the concentration of pollutants, a decrease in the amount of dissolved oxygen. Well, for plants, for some good, for others bad, no It is unequivocal, but those extremes when they go beyond the limits are never good, “said J. Šimkus.
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