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Total renewable groundwater quantity in shallow aquifers of Slovenia in 2012 was below the 2000 to 2010 average, but slightely higher than in years 2011 and 2003, the most dry year of the last decade.


Charts

Figure VD15-1: Assessment of shallow aquifer recharge in 2012 by GROWA-SI model
Sources: 

Groundwater recharge modelling by water balance model GROWA-SI (Forschungszentrum JÜLICH, Slovenian Environment Agency), 2013

Figure VD15-2: Annual average recharge of shallow aquifers together with the average for 2001 to 2010.
Sources: 

Groundwater recharge modelling by water balance model GROWA-SI (Forschungszentrum JÜLICH, Slovenian Environment Agency), 2013

Show data
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
annual average mm/leto 273 277 184 337 282 222 243 340 321 400
average 2001-2010 mm/leto 288 288 288 288 288 288 288 288 288 288
2011 2012
annual average mm/leto 174 206
average 2001-2010 mm/leto 288 288
Figure VD15-3: Index of annual average groundwater recharge of shallow aquifers of individual groundwater bodies. Average 2001 to 2010 = 100.
Sources: 

Groundwater recharge modelling by water balance model GROWA-SI (Forschungszentrum JÜLICH, Slovenian Environment Agency), 2013

Show data
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Savska kotlina in Ljubljansko Barje mm/leto 90 89 66 128 102 70 82 122 117 134
Savinjska kotlina mm/leto 98 92 49 120 120 81 95 117 108 121
Krška kotlina mm/leto 98 111 40 111 131 91 91 97 93 137
Julijske Alpe v porečju Save mm/leto 103 96 75 116 79 74 78 129 119 131
Karavanke mm/leto 89 96 78 111 91 72 83 123 132 125
Kamniško-Savinjske Alpe mm/leto 96 92 70 115 104 76 90 116 120 120
Cerkljansko, Škofjeloško in Polhograjsko hribovje mm/leto 87 91 69 123 96 71 77 123 115 148
Posavsko hribovje do osrednje Sotle mm/leto 94 99 52 124 119 77 89 115 99 132
Spodnji del Savinje do Sotle mm/leto 94 93 55 122 117 83 97 114 104 122
Kraška Ljubljanica mm/leto 98 97 66 119 92 77 78 120 104 148
Dolenjski kras mm/leto 94 103 58 125 113 83 90 109 91 134
Dravska kotlina mm/leto 85 90 52 117 119 91 105 96 123 122
Vzhodne Alpe mm/leto 80 92 67 116 113 81 107 102 131 111
Haloze in Dravinjske gorice mm/leto 86 90 51 127 116 90 107 107 104 122
Zahodne Slovenske gorice mm/leto 69 89 36 110 128 92 109 96 146 125
Murska kotlina mm/leto 64 86 28 112 134 100 109 81 153 134
Vzhodne Slovenske gorice mm/leto 62 87 27 104 134 98 111 95 156 126
Goričko mm/leto 32 82 14 106 147 102 113 91 175 136
Obala in Kras z Brkini mm/leto 93 103 61 105 89 80 78 117 110 164
Julijske Alpe v porečju Soče mm/leto 112 96 72 112 63 74 74 137 119 141
Goriška brda in Trnovsko-Banjška planota mm/leto 99 92 73 107 85 67 69 127 115 168
2011 2012
Savska kotlina in Ljubljansko Barje mm/leto 61 67
Savinjska kotlina mm/leto 50 77
Krška kotlina mm/leto 36 70
Julijske Alpe v porečju Save mm/leto 67 84
Karavanke mm/leto 72 84
Kamniško-Savinjske Alpe mm/leto 71 84
Cerkljansko, Škofjeloško in Polhograjsko hribovje mm/leto 68 70
Posavsko hribovje do osrednje Sotle mm/leto 52 81
Spodnji del Savinje do Sotle mm/leto 55 82
Kraška Ljubljanica mm/leto 59 63
Dolenjski kras mm/leto 52 75
Dravska kotlina mm/leto 40 57
Vzhodne Alpe mm/leto 60 81
Haloze in Dravinjske gorice mm/leto 45 59
Zahodne Slovenske gorice mm/leto 37 55
Murska kotlina mm/leto 40 45
Vzhodne Slovenske gorice mm/leto 38 52
Goričko mm/leto 52 38
Obala in Kras z Brkini mm/leto 62 44
Julijske Alpe v porečju Soče mm/leto 71 85
Goriška brda in Trnovsko-Banjška planota mm/leto 69 65

Goals

Groundwater is traditionally the major source of drinking water in Slovenia, contributing about 97% of all water supply quantity in the country. Slovenian groundwater sources exhibit high regional and seasonal variability, and lately there is a tendency of more frequent and more pronounced droughts. Since there is to be expected probable future crisis in water supply, the indicator is gaining on importance. Main contributions of the method used in idicator development, as of the indicator itself, are as follows:
- to improve groundwater quantity assessment, as well as forecasting and alarming in case of hydrologic extremes, e.g. hydrologic drought in aquifers;
- to identify those aquifer areas prone to frequent hydrologic droughts;
- to improve groundwater management in the fields of drinking water supply and protection of groundwater dependent aquatic ecosystems.


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