In Slovenia, the average Corg stocks in the treated agricultural lands (KZ) to a depth of 30 cm was 92.9 t/ha, with the highest in the soils of marsh meadows – 197.0 t/ha. In soils with extensive use, including extensive orchards (ES), permanent grasslands (TR), land undergoing afforestation (ZR), and KZ overgrown with trees and shrubs (DG), Corg stocks ranged from 92.2 to 109.4 t/ha. Corg stocks in vineyard soils (VI), intensive orchards (IS), and arable lands (NJ) ranged from 60.0 to 92.7 t/ha.

In the last twenty years, occurrences of hydrological droughts of surface waters have become more frequent and intense compared to the previous period, and the variability between individual years has also increased. Very dry and very wet years alternate with intermediate periods of hydrologically normal years. The intensity of droughts during the growing season has become more frequent, although, in the last decade, it has been less intense than in the decade before.

Frequency of groundwater drought is increasing in recent decades in alluvial aquifers. 8 out of 10 years with highest intensity of groundwater drought in period 1981-2023 occurred after year 2000. Groundwater droughts with higher intensity is characteristic for winter while milder groundwater droughts mostly occur at the beginning of autumn. Groundwater drought intensity is also increasing seasonally with time between June and September when groundwater use is pronounced.

The frequency of agricultural drought in Slovenia has been increasing in recent decades. In the last twenty years, we have recorded 7 droughts that affected Slovenia at the scale of a natural disaster. Drought is occurring with increasing intensity and in areas and seasons where there have been no problems in the past. An additional risk for agricultural drought are rapidly developing droughts in summer ("flash droughts"), which occur especially during heat waves. Projections show that trend of increasing frequency and intensity of agricultural drought will continue in the future.

Soil drought has a key impact on plant development and consequently on various industries (forestry, agriculture, …) . Indicators of the number of drought days and the duration of drought periods in individual years show an increase especially after 1990. Similarly, the analysis of the impact of the climate change up to 2100 shows that soil water deficits will increase in the future. The number and the duration of the droughts will increase.

In Slovenia, alluvial aquifers present 60 % of the drinking water sources, and karst-fractured aquifers present 40 %. Due to populated areas and intensive agricultural production, alluvial aquifers are exposed to greater risks of pollution with nitrates.

In most aquifers in Slovenia, levels of plant protection products and their degradation products (metabolites) indicate a decreasing trend, which is mainly due to the decreased concentrations of atrazine and its metabolite desethylatrazine. The number of individual active substances and their degradation products exceeding the 0.1 µg/l threshold value for individual active substances is also decreasing.

Water protection areas represent 17% of the area in Slovenia. Of this 61% is forest, 30% agricultural land, 6% urban land and 3% other surfaces. From agricultural land on the WPA, 49% is grassland, 36% arable land, and permanent crops, agricultural land in afforestation and other agricultural land by 5% each. In the period 2002-2011 have increased the forest areas (1.3%) and urban land (2.3%), and decreased agricultural land (to 1228 ha, or 1.2%).