KAZALCI OKOLJA

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Neutral

In Slovenia, 98.7% of surface water bodies are in good chemical condition. The two water bodies are in poor chemical condition due to the excess of metals. In general, Slovenian surface waters are not loaded with priority substances in the water, but they are loaded with too high concentrations of mercury and brominated diphenylethers in fish. These are ubiquitous pollutants that are excessively present in biota both in Slovenia and in Europe.

Neutral

In 2021 the Water Rights for special use of water were issued in 8385 acts (water permits, concessions), with additional more than 10.000 cases of minor spatial water uses with neglectable influence on state of water, were in the process of evidencing in the Water Book.

Bad

The total renewable amount of groundwater in shallow aquifers in Slovenia in the hydrological year 2019 was below the average of the comparative hydrological water balance period 1981-2010.

Neutral

Water protection areas cover 3532 km2 or 17,4% of Slovenia’s land surface in 2021. This is a slight increase, compared to 2017, but the goal of protecting the areas of all water sources for public water supply with a regulation on national level, has not been reached yet.

Good

The Slovenian EHVZ database (Hydrography and Water Land Records) contains 67.549 watercourses with total length of 41.071 km. Total area of still waters is 24 km2 and river reservoirs 31 km2.

For use in water management, water land areas are delineated. Total area of water land in Slovenia is 387 km2, which is 1, 9 % of continental area of the Republic of Slovenia. Marine water land area is 214 km2.

Good

Nutrients, especially nitrogen and phosphorus compounds, are important for the growth of algae and higher plants, but in high concentrations can cause undesirable changes in aquatic organisms and seawater quality. Long-term measurements of selected nutrients in the Slovenian sea show that their concentrations have decreased significantly. Therefore, the ecological status of the Slovenian Sea is assessed as good to very good based on nutrients in recent years.

Bad

Trends in annual precipitation are not as obvious as temperature trends. Changes between years and regions are significant. According to the climate change projections, annual precipitation will slightly increase while changes in seasonal precipitation will be noticeable. The most worrying are summer conditions, because less precipitation and higher temperature might result in higher frequency of droughts. In winter, more precipitation may lead to an increase in flooding events.

Bad

Precipitation is highly variable in space and time, even more than temperature (storms and hail). In the last two decades, Slovenia is observing catastrophic droughts and abundant precipitation resulting in floods, sometimes drought and floods occur even within the same year. The maximum snow cover depth and the depth of fresh snow decreased in the period 1961-2011

Neutral

In the last decade, droughts have been slightly less intense than in the previous decade, and it is worrying that they occur most often during the growing season. Especially in the first trimester, we observe a decrease in the frequency and intensity of hydrological drought. In the period 1961–2019, the year 2003 stands out in terms of drought, which was dry in all quarters of the year. After 2000, the years 2007 and 2011 were more markedly dry.

Bad

Frequency and intensity of groundwater droughts is increasing in recent decades. 7 out of 10 years with highest annual intensity of phenomenon is classified in the period after year 2000. The highest intensity of groundwater drought was recorded in years 2012, 2002 and 2003. Regarding the duration of groundwater drought the period between years 2002 and 2004 stands out. Extreme groundwater drought most frequently occur in winter and spring while severe drought is most commonly observed in spring and summer.


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