PovzetekV prispevku so podani metodolo{ki pristopi in rezultati prve ocene koli~inskega stanja enaindvajsetih teles podzemnih voda v Sloveniji. Ocena razpolo`ljivosti vodnih koli~in v teh telesih v obdobju od 1990 do 2001 je 1,43 ⋅ 10 9 m 3 /leto oziroma 727,4 m 3 na prebivalca letno. V letu 2002 odvzeta podzemna voda (0,23 ⋅ 10 9 m 3 /leto) je predstavljala 15 odstotkov razpolo`ljivih zalog podzemnih voda v Sloveniji. Za vsa telesa podzemne vode je bilo ocenjeno dobro koli~insko stanje. AbstractThe framework for the integrated water management of the entire EU area has been set, when the European Parliament and Council passed the Directive 2000/60/EC in 2000. According to the directive, the evaluation of meeting the environmental objectives is based also upon the assessment of quantitative and chemical status of individual groundwater body.The assessment of quantitative status of groundwater bodies under the Groundwater Directive of EU is based on the definition of the available groundwater quantity. This is a long period mean annual renewable quantity of water in the groundwater body, reduced by the quantity of the long period annual groundwater discharge, which is required for sustaining ecological objectives concerning surface water bodies and preservation of the ecosistems, connected with the groundwater bodies.Methodological approach and the results of the first groundwater quantitive status assessment for 21 groundwater bodies in Slovenia are given in this paper. The assessment of the available groundwater quantity in Slovenian groundwater bodies in the period from Ocenjevanje doseganja okoljskih ciljev po tej direktivi sloni na ugotavljanju tudi koli~in-skega stanja po posameznih telesih podzemne vode, ki ga dolo~amo kot razpolo`ljivo koli~ino podzemne vode. To je obdobna srednja letna obnovljiva koli~ina vode v telesu podzemne vode, zmanj{ana za koli~ino ob-

Zr pa so analizirali z metodo plazemske emisijske spektrometrije (ICP). Terenske meritve sevanja gama so bile presnovane v koncentracije kalija, urana in torija v tleh. Te meritve kažejo dobro povezavo z laboratorijskimi meritvami. Glede na relativno veliko razdaljo med lokacijami meritev, izdelane karte dobro nakazujejo glavne geološke enote. Uporabljena metodologija je dokazala, da bi jo lahko uspešno uporabili za monitoring okolja, geološko kartiranje in raziskave mineralnih surovin.Rezultat naloge je prva karta naravne radioaktivnosti tal v Sloveniji.

The implementation process of the EU water legislation (EU WFD, EU GWD) has put pressure on environmental managers to create, analyse and disseminate hydrological data in recent years. In this context, distributed hydrological model results at the macro scale ([10,000 km 2 ) have gained importance for the Environment Agency of the Republic of Slovenia, too. Within a joint project the distributed water balance model GROWA, developed for Germany, has been adapted to Slovenia by re-calibrating the routine for determining the average annual groundwater recharge rate. This routine consists mainly of a base flow index approach (BFI). This BFI is based on 41 different site conditions in Slovenia, whereas lithology dominates the recharge process. This paper outlines the general GROWA approach, the required input data, and the calibration process. Validated model results for the period 1971-2000, especially total runoff and base flow, are presented and discussed. These results have been used already for practical water management issues in Slovenia on European, national and regional level. It is shown that Slovenian groundwater resources exhibit high regional and seasonal variability. Tendencies of more frequent and more pronounced droughts have been detected. As demonstrated by the results GROWA is a valuable tool for the spatially distributed assessment of groundwater recharge in Slovenia.

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Klju~ne besede: telo podzemne vode, obnovljiva količina podzemne vode, razpoložljiva količina podzemne vode, količinsko stanje podzemne vode, SlovenijaKey words: groundwater body, renewable groundwater, available groundwater, groundwater quantitative status, Slovenia Izvleček V članku predstavljamo metodološki razvoj ocenjevanja količinskega stanja podzemnih voda v Sloveniji in rezultate v ocenjevalnem obdobju 2010-2013, ob upoštevanju novega referenčnega tridesetletnega vodnobilančnega obdobja 1981-2010. Količinsko stanje podzemne vode je v ocenjevalnem obdobju v vseh plitvih vodonosnikih 21 vodnih teles podzemne vode Slovenije ocenjeno s skupno oceno kot dobro, s srednjo do visoko stopnjo zaupanja. Metodologija ocenjevanja količinskega stanja podzemnih voda je razširjena z upoštevanjem procesov celotnega hidrološkega cikla in rezultatov modeliranja napajanja vodonosnikov oz. količinskega obnavljanja podzemne vode v Sloveniji. Uporabljen je koncept trajnostne rabe podzemne vode z zahtevo po dolgoročnem ohranjanju količin brez povzročanja nesprejemljivih okoljskih in drugih posledic. Zakonodajna izhodišča za ocenjevanje vplivov odvzemanja podzemne vode na obnovljive in razpoložljive količine podzemne vode uvajajo novo metodologijo, ter opuščajo zastareli rudarski koncept »računanja zalog podzemne vode«. AbstractThe improved methodological approach of the groundwater quantitative status assessment in Slovenia and the results of the assessment period 2010-2013, taking into account the new reference thirty-year period 1981-2010, are presented. Within the assessment period quantitative status in all shallow alluvial aquifers of 21 groundwater bodies in Slovenia is assessed as good, with a medium to high level of confidence. Groundwater quantitative status assessment methodology considers the processes of the whole hydrological cycle and the results of groundwater recharge modelling. The methodology incorporates the concept of sustainable groundwater use to preserve the quantities not causing environmental and other harm (unacceptable environmental and other consequences). Legislative baseline for assessing the impacts of groundwater abstraction on renewable and available quantities of groundwater introduces new methodology by abandoning obsolete mining concept of "calculation of groundwater reserves". UvodPodzemno vodo so v preteklem stoletju pogosto obravnavali in količinsko ocenjevali na način, kot so ocenjevali zaloge mineralnih surovin. Strokovne kritike takega pristopa so znane že iz prve polovice 20. stoletja (Lee, 1915; SavarenSky, 1933), ko je znameniti ruski akademik A. P. Karpinsky že leta 1931 zapisal: »Podzemna voda ni le mineralna surovina…«. Tovrstne kritike so se z različnimi predlogi dopolnitev tega pristopa nadaljevale tudi v drugi polovici preteklega stoletja (karanth, 1987;ZektSer, 2000). Kljub temu se je »rudarski pristop« računanja zalog podzemne vode v nekaterih državah srednje in južne Evrope in v republikah nekdanje Sovjetske zveze zelo uveljavil in kasneje prešel celo v zakonodajne dokumente.