KAZALCI OKOLJA

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Total renewable groundwater quantity in shallow aquifers of Slovenia in 2014 was the highest of the last fifty years.


Charts

Figure VD15-1: Assessment of shallow aquifer recharge in 2014 by GROWA-SI model
Sources: 

Regional water balance model GROWA-SI (Forschungszentrum JÜLICH, Slovenian Environment Agency), 2015

Figure VD15-2: Groundwater recharge of shallow aquifers - annual quantity deviations from 1981 - 2010 average.
Sources: 

Regional water balance model GROWA-SI (FZ JÜLICH, Slovenian Environment Agency), 2015

Show data
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
annual average mm 229 385 269 321 309 310 308 312 385 348
deviation (mm) mm -60 96 -20 32 20 21 19 23 96 59
deviation (%) % -21 33 -7 11 7 7 7 8 33 21
period average 1981-2010 mm 289 289 289 289 289 289 289 289 289 289
1981 1982 1983 1984 1985 1986 1987 1988 1989 1990
annual average mm 266 326 207 335 327 277 340 252 270 311
deviation (mm) mm -23 37 -82 46 38 -12 51 -37 -19 22
deviation (%) % -8 13 -28 16 13 -4 18 -13 -7 8
period average 1981-2010 mm 289 289 289 289 289 289 289 289 289 289
1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
annual average mm 302 303 256 276 335 339 253 300 314 308
deviation (mm) mm 13 14 -33 -13 46 50 -36 11 25 19
deviation (%) % 4 5 -11 -5 16 17 -12 4 9 6
period average 1981-2010 mm 289 289 289 289 289 289 289 289 289 289
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
annual average mm 273 277 184 337 282 222 243 340 321 400
deviation (mm) mm -16 -12 -105 48 -7 -67 -46 51 32 111
deviation (%) % -6 -4 -36 17 -2 -23 -16 18 11 38
period average 1981-2010 mm 289 289 289 289 289 289 289 289 289 289
2011 2012 2013 2014
annual average mm 174 207 333 461
deviation (mm) mm -115 -82 44 172
deviation (%) % -40 -28 15 60
period average 1981-2010 mm 289 289 289 289

Goals

Groundwater is traditionally the major source of drinking water in Slovenia, contributing majority 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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