KAZALCI OKOLJA

You are here

Key message
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.


Charts

Figure PP13-1: Annual average of standardized groundwater level index (SGI) on selected measuring stations
Sources: 

Hydrologic database ARSO, Slovenian Environment Agency, 2021 (May, 2021)

Show data
    1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
Letno povprečje standardiziranega indeksa gladine podzemne vode (SGI) Annual average of standardized groundwater level index (SGI) -0,14781 0,133332 0,228866 0,24421 0,461023 0,27045 0,507732 -0,28902 -0,36949 0,344909 -0,20437 -0,64069 0,263823 0,598722 0,606727 -0,12729 -0,33932 0,783914 -0,62311 0,14468 -1,00309 -0,90449 -0,23253 0,025355 0,364777 -0,68941 -0,17623 0,349287 0,183296 -0,11217 -1,20768 0,591969 0,774399 0,308199 -0,17238 -0,64323 0,641359 -0,44917 -0,29835
Table PP13-2: Percentage of measuring stations regarding intensity of groundwater drought in intergranular aquifers
Sources: 

Hydrologic database ARSO, Slovenian Environment Agency, 2021 (May, 2021)

Show data

Extremely dry (SGI <-2)[%]

Severely dry (-2

Moderately dry (-1.5

Moderate wet (1 < SGI > 1.5)[%]

Severely wet (1.5 < SGI > 2)[%]

Extremely wet (SGI > 2)[%]

1982

-3.57

-17.86

-42.86

46.43

21.43

3.57

1983

0

-25

-32.14

71.43

32.14

7.14

1984

-10.71

-25

-53.57

57.14

39.29

7.14

1985

-3.57

-17.86

-39.29

75

67.86

25

1986

0

-7.14

-32.14

78.57

60.71

35.71

1987

-3.57

-3.57

-46.43

71.43

46.43

14.29

1988

0

0

0

85.71

35.71

3.57

1989

-25

-60.71

-85.71

50

42.86

10.71

1990

0

-12.90

-61.29

12.90

3.23

3.23

1991

0

-3.23

-9.68

54.84

35.48

9.68

1992

0

-19.35

-77.42

58.06

19.35

3.23

1993

-22.58

-87.10

-93.55

58.06

19.35

6.45

1994

-3.23

-6.45

-32.26

64.52

22.58

22.58

1995

0

-3.23

-12.90

80.65

64.52

38.71

1996

0

-6.45

-25.81

87.10

48.39

6.45

1997

-3.23

-22.58

-48.39

41.94

19.35

0

1998

-9.68

-41.94

-74.19

45.16

51.61

16.13

1999

0

-3.23

-12.90

80.65

67.74

45.16

2000

0

-12.90

-83.87

22.58

3.23

0

2001

0

0

-41.94

48.39

25.81

25.81

2002

-38.71

-70.97

-96.77

16.13

9.68

3.23

2003

-35.48

-87.10

-80.65

12.90

0

0

2004

-16.13

-38.71

-54.84

51.61

25.81

0

2005

-3.23

-12.90

-77.42

67.74

38.71

29.03

2006

0

-3.23

-32.26

61.29

45.16

12.90

2007

-25.81

-41.94

-77.42

25.81

6.45

3.23

2008

0

-6.45

-51.61

29.03

16.13

6.45

2009

-3.23

-9.68

-41.94

83.87

58.06

38.71

2010

0

-12.90

-38.71

64.52

38.71

19.35

2011

0

-22.58

-67.74

74.19

35.48

12.90

2012

-41.94

-74.19

-96.77

6.45

0

0

2013

-3.23

-16.13

-41.94

90.32

70.97

51.61

2014

0

0

-12.90

80.65

64.52

96.77

2015

0

-3.23

-32.26

67.74

48.39

32.26

2016

-3.23

-22.58

-54.84

51.61

32.26

12.90

2017

-12.90

-41.94

-90.32

6.45

6.45

3.23

2018

0

-9.68

-29.03

93.55

51.61

22.58

2019

-22.58

-41.94

-70.97

35.48

6.45

0

2020

-25.81

-54.84

-83.87

51.61

22.58

25.81

Figure PP13-3: Deviation of the annual amount of vertical groundwater supply with precipitation infiltration from the reference period
Sources: 

Water balance model mGROWA, Slovenian Environment Agency, 2021 (May, 2021)

Show data
      1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
Obdobno povprečje mGROWA 1991-2020 (v mm) Periodic average of mGROWA 1991-2020 (in mm) mm 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553 316,553
Odstopanje od povprečja (mm) Deviation from average (mm) mm 68,191 -47,988 4,708 -7,323 -6,072 -8,683 -4,789 68,643 31,898 -1,889 -1,462 -32,165 49,247 -13,863 46,192 13,811 35,338 -86,024 -81,581 44,058 -19,476 15,450 -0,825 48,126 41,194 -101,888 75,953 -11,365 -94,673 137,392 -86,456 -130,621 61,768 -20,867 -26,926 -65,019 -80,429 52,576 98,143 -40,393 -126,581 106,891 186,099 5,322 -49,268 -32,161 36,378 -77,530 46,213
Letno napajanje podzemne vode (odstopanje od dolgoletnega povprečja) Deviation from the average (%) % 22 -15 1 -2 -2 -3 -2 22 10 -1 0 -10 16 -4 15 4 11 -27 -26 14 -6 5 0 15 13 -32 24 -4 -30 43 -27 -41 20 -7 -9 -21 -25 17 31 -13 -40 34 59 2 -16 -10 11 -24 15
Močan primanjkljaj napajanja podzemne vode Severe groundwater supply shortage % -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22 -22
Izreden primanjkljaj napajanja podzemne vode Extreme groundwater supply shortage % -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39 -39


Related indicators


SLEDI NAM

TWITTER