(water-bearing layer, groundwater sources, rheometric measurements, groundwater modeling, groundwater balance)

tapped water for the townare presented. Key words: water-bearing layer, groundwater source, rheometric measurements, groundwater modeling,groundwater balance.Апстракт. Постојеће извориште подземних вода за водоснабдевање

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analysis of the groundwater regime according to the recorded groundwater table wasconducted in order to determine the value of the headto be set by this boundary condition for each waterbearing layer. Groundwater hydrographs

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ring layer is tapped by only three wells. The groundwater table at the source was recorded for a period of 30 years. In the conducted hydrodynamic analysis of the groundwater regime, it was concluded that inthe mentioned

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Polomčić, Dušan, Krunić, Olivera, and Ristić-Vakanjac, Vesna, “Hydrogeological and hydrodynamic characteristics of groundwater sources for the public water supply of Bečej (northern Serbia)” у Geološki anali Balkanskoga poluostrva (72), Geološki zavod Univerziteta u Beogradu.

(river bank filtration, Alluvium, Groundwater recharge, Groundwater quality, the Velika Morava River)

alluvial sediments have great potential for groundwater purification which is essential for preservingthe stability of the groundwater quality. Conducted research in the area of groundwater source Brzan in central Serbia showed

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particularly regarding mentioned components. Based on numerousresults on surface and groundwater quality we can conclude that water from the groundwater source Brzan iswith good quality and can be used for drinking consumption with

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filtration through river bad sediments and aquifer body.Key words: River bank filtration, Alluvium, Groundwater recharge, Groundwater quality, the VelikaMorava River.Апстракт. Алувијалнe издани се у свету најчешће користе за во

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Petrović, Branislav and Živanović, Vladimir, “Impact of river bank filtration on alluvial groundwater quality: a case study of the Velika Morava River in central Serbia” у Geološki anali Balkanskoga poluostrva (76), Univerzitet u Beogradu - Rudarsko-geološki fakultet, Departman za istorijsku i dinamičku geologiju i.

sustainable discharge of the well. Where incrustationoccurs, groundwater entrance velocities at horizontal screens also need to be determined. At Belgrade Groundwater Source, maximum permissible screen entrance velocities are

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wells at Belgrade Groundwater Source is presented in thepaper. One of the wells (RB-16) clearly reflects the presence of a semi-permeable interbed, whereas the other (RB-46) does not.Key words: groundwater, well discharge capacity

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software had hindered complex hydrodynamic analyses of groundwater flow, as needed for the design of BGS wells. Consequently, JCI has developed software for estimating3D groundwater flow, which supports hydraulic quantification of

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Pušić, Milenko and Dimkić, Milan, “Comparative assessment of radial collector well elements with a new approach” у Geološki anali Balkanskoga poluostrva (78), University of Belgrade – Faculty of Mining and Geology,Department of Regional Geology and Department of Palaeontology.

(radioactivity, activity concentration, 40K groundwater, Serbia)

occurrence of carbonated groundwater (MARINKOVIĆ et al. 2012). This groundwater also exhibits naturally elevated radioactivity. ConclusionIn this paper the distribution of natural radioactivity of groundwater from the territory

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water originates from these rocks (PROTIĆ 1995).Groundwater occurrences mark different regional geological-structural features and the largest number ofmineral groundwater is related to the granite intrusions and volcanic

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samples that exhibited elevated betaactivity concentrations belonged to the Na-HCO3 typeof groundwater, suggesting that the groundwater tracedto an aquifer in granitoid rocks with elevated concentrations of dissolved solids

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Ćuk, Marina, Papić, Petar, and Stojković, Jana, “Natural radioactivity of groundwaters in Serbia” у Geološki anali Balkanskoga poluostrva (74), Geološki zavod Univerziteta u Beogradu.

Ni, Fe, Mn) in groundwater, the relation-ship between groundwater and local lithostratigraphic units is outlined.Chemical analysis of the investigated waters shows that arsenic concentrationin groundwater of the investigated

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n of As(iii) and total arsenic in groundwater of NorthernBačka. Water Quality, 4: 19–22 [in Serbian].kourAS, A., kATSoyiANNiS, i. & vouTSA, D. 2007. Distributionof arsenic in groundwater in the area of Chalkidiki,Northern

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of ox-idation of sulphide minerals with As (major or minor presence) – primarilyarsenopyrite or pyrite. Groundwater with higher concentration of arsenic(above10 μg/l) is exploited as drinking water used by tourists and by

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Poznanović Maja et al., “The occurrence and evolution of arsenic in aquifers of the Avala volcanic complex ” у Geološki anali Balkanskoga poluostrva (December, 2020), University of Belgrade, Faculty of Mining and Geology, Department of Regional Geology and Department of Palaeontology.

(groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process, expert knowledge, triangular fuzzy numbers, linguistic variables)

alternativesand the best alternative was selected for groundwater control at the site of the pumping station “Bezdan 1”. Key words: groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert

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optimization in hydrodynamic analysis of groundwater controlsystems: Case study of the pumping station “Bezdan 1”, SerbiaDRAGOLJUB BAJIĆ1 & DUŠAN POLOMČIĆ2Abstract. A groundwater control system was designed to lower the water

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is increasingly used inall fields of science, including hydrogeology - groundwater management, water quality management,dewatering and groundwater control, etc. (AZARNIVAND et al. 2004; SINGH et al. 2007; UDDAMERI et al

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Bajić, Dragoljub and Polomčić, Dušan, “Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station "Bezdan 1", Serbia” у Geološki anali Balkanskoga poluostrva (75), Univerzitet u Beogradu -Rudarsko-geološki fakultet.

(flotation tailings dump, alluvium, groundwater pollutuon, Serbia)

the alluvial plain of the Ibar River. Due to the excellent groundwater flow characteristics ofthe alluvial formations underlying the tailings dump, the groundwater and soil over an extended area werecontinually polluted. High

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theRudnik Creek and the IbarRiver relative to the groundwater level.MethodsIn order to determine theimpact of the flotation tailingin Veliko Polje on the surrounding soil and groundwater,laboratory tests of the substrateenvironment

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of Belgrade).Groundwater was sampledfrom privately dug wells, the levels of which areshown in Fig. 3. The samples were taken at the end ofautumn when the level of the Ibar River was lowerthan the groundwater level, shown

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Miladinović, Branko, Papić, Petar, and Mandić, Marina, “Groundwater pollution with heavy metals in the Ibar alluvium near Raška (Serbia)” у Geološki anali Balkanskoga poluostrva (73), Geološki zavod Univerziteta u Beogradu.

(magnesium, groundwater, distribution, Mg/Ca ratio, Serbia)

ground in which the groundwater isformed, as well as the type of groundwater and theTDS level, given that the concentration of this ion ishigher in high-TDS than in low-TDS groundwater,such that this groundwater is not of a pure

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TODOROVIĆ88Fig. 5. Magnesium-to-calcium ratio of groundwater. Legend: I, Groundwater formedin limestones; II, Groundwater associated with dolomites and dolomitic limestones;III, Groundwater tracing to magnesium-rich silicate rocks

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into two groups: (1) groundwater occurrences whose Mg concentrations are from 50 to 70 mg/LDistribution of magnesium in groundwater of Serbia 87Fig. 4. Distribution of magnesium in Serbia’s groundwater resources. Legend: 1

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Milosavljević, Jovana, Andrijašević, Jakov, and Todorović, Maja, “Distribution of magnesium in groundwater of Serbia” у Geološki anali Balkanskoga poluostrva (74), Geološki zavod Univerziteta u Beogradu.

(subgeothermal, groundwater, heat pump, energy efficiency, eastern Serbia)

cal heterogeneity and a variety in aquifer systems and groundwater distribution. Thus, the region ischaracterized by the presence of formations withsmall groundwater reserves but also Mesozoic carbonate rocks, Tertiary or

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longtime to come. There is also good potential for groundwater utilization from alluvial sediments and Neogeneformations in Intra-Carpathian basins. Regarding thetotal groundwater resources available there are somecontradictions

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ConclusionsAmong the main advantages of subgeothermalenergy extraction from groundwater (temperature30°C or less) are:• Easy tapping (once the groundwater resource isproperly explored and defined);• Renewable energy resource which

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Stevanović, Zoran et al., “Prospects for wider energetic utilization of subgeothermal water resources: eastern Serbia case study” у Geološki anali Balkanskoga poluostrva (72), Geološki zavod Univerziteta u Beogradu.

atBelgrade Groundwater Source. As a result, well discharge capacities vary over a broad range and groundwater levels in the capture zones differ even when the rate of discharge is the same. Five characteristic groundwater level

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The groundwater surface in the capture zone ofwell RB-23 is typical of a high hydraulic conductivity aquifer: the impact of groundwater extractionspreads far beyond the capture zone of the laterals andthe groundwater surface

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Geologic framework andhydrogeologic featuresBelgrade Groundwater Source (BGWS) is locatedalong the Sava River, in Quaternary fluvial sediments.The boundary of the groundwater source (protectionzones) encompasses, for the most

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Božović, Djordjije, Polomčić, Dušan, and Bajić, Dragoljub, “Characteristic groundwater level regimes in the capture zones of radial collector wells and importance of identification ( case study of Belgrade Groundwater Source)” у Geološki anali Balkanskoga poluostrva (77), Rudarsko-geološki fakultet Univerziteta u Beogradu.

(factor analysis, hydrogeochemical processes, groundwater, factor loadings, Serbia)

similarities between samples (i.e. groundwater occurrences).The goal of multivariate statistical methods is to identify the hydrogeochemical processes that govern theformation of groundwater composition. If the geological and

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factor analysis in identification of dominant hydrogeochemical processes of groundwater 59Table 1. Elementary statistical quantities for the 40 groundwater samples.Table 2. Factor loadings and percentage of variance explained by

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GHEBREMICHAEL, K., BUAMAH, R. & AMY, G. 2011. Fluoride occurrence in groundwater in the Northern region of Ghana, Proceedings ofIWA Specialist Groundwater Conference in Belgrade,267–275.STEVENS, J.P. 1992. Applied multivariate

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Stojković, Jana et al., “Aplication of factor analysis in identification of dominant hydrogeochemical processes of some nitrogenous groundwater of Serbia” у Geološki anali Balkanskoga poluostrva (74), Geološki zavod Univerziteta u Beogradu.

(monitoring, groundwater, good status, EU Water Framework Directive, Serbia)

controlling groundwater quality. Currently only 20% of delineated groundwater bodies are under observation. This paper evaluates current conditions and proposes to expand national monitoring network to covermost of groundwater bodies

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sediments, and groundwater isfrequently loaded with organic substances and ammonia, occasionally, also arsenic or boron. Although large groundwater consumer Serbia is notproperly organizes monitoring of groundwater qualityand

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the Designation of Surface Water and Groundwater Bodies inorder to conserve or achieve good ecological, chemicaland quantitative status of groundwater resources. Abody of groundwater designated within a geologicalformation

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Stevanović, Zoran, Ristić Vakanjac, Vesna, and Milanović, Saša, “Conception to set up a new groundwater monitoring network in Serbia” у Geološki anali Balkanskoga poluostrva (76), Univerzitet u Beogradu - Rudarsko-geološki fakultet, Departman za istorijsku i dinamičku geologiju i.

thesame groundwater source. The effect of the extent ofriverbed colmation and the filtration parameters of theinterbed were assessed, using a hydrodynamic modelof the groundwater in the pertinent part of the groundwater source

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PUŠIĆ2Abstract. The outcomes of a study on groundwater flow from a river to a radial collector well are presented in the paper. The considered well, RB-16, is part of a groundwater source that provides water supply toBelgrade

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this particular purpose. Key words: groundwater, anoxic conditions, rate of horizontal screen incrustation, new approach, definition of well elements, numerical modeling of groundwater, public water supply, Serbia.Апстракт

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Dimkić, Milan and Pušić, Milenko, “A new approach to the definition of design criteria for radial collector wells in anoxic settings” у Geološki anali Balkanskoga poluostrva (79), University of Belgrade – Faculty of Mining and Geology,Department of Regional Geology and Department of Palaeontology.

not considerably altered.The groundwater level at pieHydraulic characterization of laterals as applied to selected radial collector wells at Belgrade Groundwater Source 39Fig. 3. Groundwater levels in the zone of well RB-8m

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require prior hydrodynamic analysis by simulating groundwater extraction conditions on anumerical model. The first step of the proposed approach is to assess the groundwater level regime formed inthe capture zone when the well

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radial collector well, production causes the formation of a certain dynamic groundwater level in the zone of influence. The surface of the groundwater level in the capture zone is typically three-dimensional. Given thepresent

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Polomčić, Dušan, Božović, Đorđije, and Bajić, Dragoljub, “Hydraulic characterization of laterals as applied to selected radial collector wells at Belgrade Groundwater Source” у Geološki anali Balkanskoga poluostrva (77), Rudarsko-geološki fakultet Univerziteta u Beogradu.

(groundwater regime, catchment area, real evapotranspiration, dynamic volume, water budget, Belo Vrelo, Serbia)

streams. In the case of fracture porosity,groundwater pathways are determined by the geological formation, extent of fracturing and local hydrogeological conditions. At Belo Vrelo, groundwater circulates within faults, fractures

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the hydrogeological characteristics of the area, the qualitative andquantitative characteristics of the groundwater, andthe variations in these parameters over time. Theaquifer regime is governed by a series of factors,

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of transformation of precipitation into a discharge hydrograph. It isalso possible to determine dynamic groundwater volumes in a karst spring catchment area, the water budgetequation parameters and the like. It should be

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Čokorilo Ilić, Marina et al., “Assessment of the discharge regime and water budget of Belo Vrelo (source of the Tolišnica River, central Serbia)” у Geološki anali Balkanskoga poluostrva (75), Univerzitet u Beogradu -Rudarsko-geološki fakultet.