The spatial extent of extreme drought does not necessarily correlate with the column size of the average summer water balance for Slovenia or the government declaration of drought as a national disaster. For example, in 2007 a deficit in average summer water balance is recorded for Slovenia, however it was more or less evenly distributed (as can be seen from the lower part of the graph above), so no region experienced a water balance deficit that would exceed 95^th percentile of the reference period. Even lesser than in 2007 was the average summer water balance deficit for Slovenia in 2006, but it was mostly present in one region where it also exceeded 95^th percentile and is therefore treated as drought of local extent. The declaration of drought as a natural disaster follows a decree by the Government of the Republic of Slovenia and serves as supplementary information to the weather statistics used to compile the agricultural drought indicator.

Explanation of the legend: In the upper of the two graphs, the column size corresponds to the values of average summer meteorological water balance for Slovenia for individual years in accordance with the scale on the vertical axis; the number below each column represents the number of regions with extreme drought in the given year; the column colour indicates the spatial extent of extreme drought conditions in Slovenia in accordance with the provided colour legend (blue for no region recording extreme drought, yellow indicating local drought when up to 3 regions record extreme drought, orange indicating regional drought when up to 5 regions record extreme drought, and red indicating national scale drought when at least 6 regions record extreme drought); and stripes are added to columns for years when drought was declared a natural disaster on the basis of Natural Disaster Recovery Act (Official Gazette of the Republic of Slovenia, No. 114/05, as amended). For each year, the number displayed in the upper graph is consistent with the number of extremely dry regions in the lower graph (visualized as large circles).