VN Slnečné Údolie

Geological structure beneath the water

Which rock lies beneath the water line (Geological Map of Slovakia 1:50,000), how old it is, how thick the Quaternary cover is and in which tectonic unit the water flows. The bedrock decides the hardness of the water, the bottom, the turbidity after rain and the abundance of springs.

The points follow the water line (for a stream and a basin, fishing district after fishing district). The strip is a cross-section by distance, not a map; the width of a section corresponds to the number of points.

• River alluvium100%SR 72 %

marker on the bar: share among all sample points on streams in Slovakia

River alluvium: Gravelly and sandy bottom and floodplains; the water is replenished from groundwater in the alluvium.

Geological age of the rocks

• Quaternary100%

Most common rock units

Neotectonic units

• positive unit (mountain range)100%SR 60 %

marker on the bar: share among all sample points on streams in Slovakia

Direction of neotectonic movements

• medium uplift100%SR 32 %

marker on the bar: share among all sample points on streams in Slovakia

Regional geological division

• core mountains100%SR 11 %

marker on the bar: share among all sample points on streams in Slovakia

Regional geological division (subunits)

• Malé Karpaty100%SR 1.4 %

marker on the bar: share among all sample points on streams in Slovakia

Susceptibility of the area to slope deformations

• Region of stable areas100%SR 95 %

marker on the bar: share among all sample points on streams in Slovakia

The map covers 1 of 1 points on the water line.

Hydrogeology: aquifers and groundwater

Streams and rivers are fed by groundwater. Hydrogeological maps show in which rocks the water is stored, how permeable they are and what the water in them is like. The data come from ŠGÚDŠ maps, not from measurements at a particular water.

Aquifer rocks (hydrogeological map 1:200,000)

• Metamorphic rocks100%SR 2.4 %

marker on the bar: share among all sample points on streams in Slovakia

Aquifer type

• Menšie zvodnence s medzizrnovým alebo puklinovým typom priepustnosti alebo oblasti s takmer žiadnymi množstvami podzemnej vody (Metamorphic rocks)100%SR 2.3 %

marker on the bar: share among all sample points on streams in Slovakia

Type of permeability (basic hydrogeological map 1:50,000)

• intergranular100%SR 86 %

marker on the bar: share among all sample points on streams in Slovakia

Hydrogeological function

• aquifer100%SR 95 %

marker on the bar: share among all sample points on streams in Slovakia

Main hydrogeological region

• crystalline and Mesozoic of the southeastern part of the Pezinok Carpathians100%SR 0.0 %

marker on the bar: share among all sample points on streams in Slovakia

Genetic type of groundwater

• silicate100%SR 2.9 %

marker on the bar: share among all sample points on streams in Slovakia

Groundwater quality class

• A100%SR 36 %

marker on the bar: share among all sample points on streams in Slovakia

Surface water chemistry according to the atlas

Modelled composition of the water in the area the fishing district line runs through. The rasters of the Geochemical Atlas of Slovakia (surface waters) are an interpolation of measurements in sampled streams, so they show the typical background of the area, not a measurement in a particular stream.

Ionic composition of the water

Water type by dominant ions: Ca–Mg–HCO₃–SO₄

Shares are in equivalents, the usual way of comparing the composition of waters.

Major ions

• SulphatesSO451.9 mg/lpercentile 63
• SodiumNa7.20 mg/lpercentile 41
• PotassiumK1.66 mg/lpercentile 24
• MagnesiumMg7.16 mg/lpercentile 21
• FluoridesF0.0645 mg/lpercentile 20
• ChloridesCl2.96 mg/lpercentile 18
• CalciumCa27.3 mg/lpercentile 17
• BicarbonatesHCO367.0 mg/lpercentile 10

dot: average along the water line, line: from the lowest to the highest value, scale: position among sample points on streams in Slovakia (0 to 100th percentile)

Nutrients and organic pollution

• NitratesNO39.04 mg/lpercentile 69
• Chemical oxygen demandChSK2.73 mg/lpercentile 39
• AmmoniumNH40.0582 mg/lpercentile 30
• PhosphatesPO40.0485 mg/lpercentile 27

Metals

• ZincZn24.5 μg/lpercentile 90
• ManganeseMn18.3 μg/lpercentile 36
• IronFe0.0553 mg/lpercentile 25
• AluminiumAl18.8 μg/lpercentile 17

Elements in river sediments

The Geochemical Atlas of Slovakia (river sediments) describes what the river carries in the fine material on its bed. Sediment collects metals from rocks, ore occurrences and past mining and industry. It is not a legal limit or a health risk assessment: it shows how an element on this stream ranks among streams in Slovakia.

Potentially toxic and trace elements

• ArsenicAs36.9 mg/kgpercentile 95
• AntimonySb8.60 mg/kgpercentile 93
• MolybdenumMo0.712 mg/kgpercentile 87
• CadmiumCd0.310 mg/kgpercentile 72
• TinSn3.34 mg/kgpercentile 71
• NickelNi28.3 mg/kgpercentile 65
• BismuthBi0.240 mg/kgpercentile 59
• CopperCu24.7 mg/kgpercentile 55
• ZincZn99.1 mg/kgpercentile 53
• CobaltCo8.20 mg/kgpercentile 46
• VanadiumV61.2 mg/kgpercentile 32
• SeleniumSe0.163 mg/kgpercentile 28
• LeadPb10.8 mg/kgpercentile 18
• MercuryHg0.0546 mg/kgpercentile 17
• ChromiumCr49.4 mg/kgpercentile 16

dot: average along the water line, line: from the lowest to the highest value, scale: position among sample points on streams in Slovakia (0 to 100th percentile)

Natural radioactivity and radon

Airborne gamma-ray spectrometry by ŠGÚDŠ measures radiation from potassium, uranium and thorium in rocks and soil. Granites and some acidic volcanic rocks have the highest values, limestones and floodplains the lowest. Caesium-137 is a remnant of fallout from the Chernobyl accident and nuclear weapons tests.

• Potassium (K)K1.45 %percentile 80
• Equivalent uranium (eU)eU2.53 ppm43th percentile
• Equivalent thorium (eTh)eTh6.45 ppm19th percentile

dot: average along the water line, line: from the lowest to the highest value, scale: position among sample points on streams in Slovakia (0 to 100th percentile)

• Areal activity of 137CsCS1372,586 Bq/m²percentile 82

Radon risk by isopleths

• medium100%SR 64 %

marker on the bar: share among all sample points on streams in Slovakia

Geophysical fields: magnetics and gravity

Maps of the magnetic field and gravity (ŠGÚDŠ) reveal what lies beneath the sediments and the surface: volcanic bodies, faults and crustal thickness. For an angler they are interesting indirectly: they show where the bedrock changes, and with it the water.

Geothermal potential

The Atlas of Geothermal Energy of Slovakia records rock temperature and heat flow from the Earth's interior. It is the potential of the area, not the actual warmth of the water in the stream. Specific geothermal boreholes and springs near this water are in the geothermal energy section below.

• Surface heat flow density55mW/m²

Relief, climate and soils

A basin is not just water: slope and elevation determine the speed of runoff, climate the temperature and amount of water, and soils what is washed into the stream. The data come from the geomorphological division, climatic-geographical types and soil maps of ŠGÚDŠ.

• Elevation of geomorphological units (from–to)132–709m a.s.l.
• Average elevation of the units371m a.s.l.
• Average slope9.6°
• Average January temperature-3.5°C
• Average July temperature18.5°C
• Annual precipitation700mm

Geomorphological units

• Malé Karpaty100%SR 1.4 %

marker on the bar: share among all sample points on streams in Slovakia

Geomorphological regions

• Fatra–Tatra area100%SR 21 %

marker on the bar: share among all sample points on streams in Slovakia

Climatic-geographical types

• mountain climate100%SR 33 %

marker on the bar: share among all sample points on streams in Slovakia

Soil contamination (map 1:500,000)

• relatively clean soil100%SR 53 %

marker on the bar: share among all sample points on streams in Slovakia

Map of the corridor

Where the nearest mine workings, deposits, burdens, geothermal boreholes and gold finds are. Groups can be switched off.

Trace elements in surface waters

Arsenic, antimony, cadmium, lead, copper, zinc and other elements in samples from rivers and streams (Geochemical Atlas of Slovakia, surface waters, 2015). The bar shows where the highest value lies among all samples in Slovakia; the light marker is the median of the samples at this water.

• CopperCuhigh (top 5 %)
  highest 11.1 μg/lmedian 11.1 μg/l1 sample
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Kolarský, potok1999, 580 m from the water. Comparison: percentile 96 of all samples in Slovakia.

• AntimonySbhigh (top 5 %)
  highest 5.00 μg/lmedian 5.00 μg/l1 sample
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Kolarský, potok1999, 580 m from the water. Comparison: percentile 95 of all samples in Slovakia.

• ArsenicAselevated (top 10 %)
  highest 5.00 μg/lmedian 5.00 μg/l1 sample
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Kolarský, potok1999, 580 m from the water. Comparison: percentile 92 of all samples in Slovakia.

• SeleniumSebelow half of Slovakia
  highest 0.500 μg/lmedian 0.500 μg/l1 sample100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Kolarský, potok1999, 580 m from the water. Comparison: percentile 46 of all samples in Slovakia.

• LeadPbbelow half of Slovakia
  highest 2.50 μg/lmedian 2.50 μg/l1 sample100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Kolarský, potok1999, 580 m from the water. Comparison: percentile 43 of all samples in Slovakia.

• LithiumLibelow half of Slovakia
  highest 5.00 μg/lmedian 5.00 μg/l1 sample100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Kolarský, potok1999, 580 m from the water. Comparison: percentile 34 of all samples in Slovakia.

• ChromiumCrbelow half of Slovakia
  highest 1.00 μg/lmedian 1.00 μg/l1 sample100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Kolarský, potok1999, 580 m from the water. Comparison: percentile 32 of all samples in Slovakia.

• BariumBabelow half of Slovakia
  highest 23.0 μg/lmedian 23.0 μg/l1 sample
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Kolarský, potok1999, 580 m from the water. Comparison: percentile 27 of all samples in Slovakia.

• CadmiumCdbelow half of Slovakia
  highest 0.150 μg/lmedian 0.150 μg/l1 sample100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Kolarský, potok, 580 m from the water. Comparison: percentile 26 of all samples in Slovakia.

Major ions, mineralisation and pH

Basic water chemistry: which rocks the minerals in it come from.

• Silicon dioxideSiO2slightly elevated
  highest 20.6 mg/lmedian 20.6 mg/l1 sample
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Kolarský, potok1999, 580 m from the water. Comparison: percentile 78 of all samples in Slovakia.

Gold and ore minerals in river sediments

Regional panning prospecting: the heavy fraction was washed out of river gravel and the mineral grains in it were counted. The map of finds is positive: a sample without gold is not listed in the atlas, so the absence of a find is not proof that there is no gold.

• Ilmenit (FeTiO₃)41 samples, at most 1115 grains
• Magnetite (Fe₃O₄)41 samples, at most 815 grains
• Rutil (TiO₂)41 samples, at most 315 grains
• Monazit ((Ce,La,Nd)PO₄)38 samples, at most 55 grains
• Scheelit (CaWO₄)35 samples, at most 400 grains
• Anatas (TiO₂)31 samples, at most 55 grains
• Barite (BaSO₄)26 samples, at most 315 grains
• Limonite (FeO(OH)·nH₂O)25 samples, at most 315 grains
• Pyrite (FeS₂)23 samples, at most 55 grains
• Hematite (Fe₂O₃)17 samples, at most 315 grains
• Arsenopyrite (FeAsS)5 samples, at most 50 grains
• Cinabarit (HgS)4 samples, at most 8 grains
• Gold (Au)4 samples, at most 2 grains
• Kasiterit (SnO₂)2 samples, at most 1 grains

Nearest samples with gold

Rock-forming and accessory minerals

• Granáty ((Fe,Mg,Ca,Mn)₃Al₂Si₃O₁₂)41 samples, at most 4115 grains
• Staurolit (Fe₂Al₉Si₄O₂₃(OH))41 samples, at most 815 grains
• Zirconium (ZrSiO₄)40 samples, at most 555 grains
• Epidot (Ca₂(Al,Fe)₃Si₃O₁₂(OH))38 samples, at most 555 grains
• Tourmalines (complex borosilicate)38 samples, at most 55 grains
• Amfiboly (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂)31 samples, at most 315 grains
• Apatit (Ca₅(PO₄)₃(F,Cl,OH))24 samples, at most 815 grains
• Pyroxény ((Mg,Fe,Ca)₂Si₂O₆)22 samples, at most 315 grains
• Sillimanit (Al₂SiO₅)16 samples, at most 15 grains
• Titanit (CaTiSiO₅)15 samples, at most 398 grains
• Kyanit (Al₂SiO₅)10 samples, at most 15 grains
• Andaluzit (Al₂SiO₅)9 samples, at most 15 grains
• Spinel (Cr-spinel) ((Mg,Fe)(Al,Cr)₂O₄)9 samples, at most 5 grains
• Korund (Al₂O₃)3 samples, at most 5 grains

Groundwater: chemistry, water types and radioactivity

Hydrogeochemical objects (analyses of springs and boreholes), the geochemical atlas of groundwater (1996) and radiohydrochemical sampling. Groundwater feeds streams, so its composition also affects the water in the stream.

Chemical water types nearby

• CaSO46×
• CaMgSO45×
• CaMgHCO35×
• CaHCO3SO43×
• CaSO4HCO32×
• CaMgSO4HCO32×
• CaHCO31×
• Ca-Mg-HCO3-SO41×

Water quality class according to the hydrogeochemical map

• class A10×
• class B7×
• class D4×
• class F3×
• class H2×
• class C2×
• class E1×

Metals in groundwater

• CopperCuextreme (top 1 %)
  highest 67.0 μg/lmedian 1.10 μg/l13 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 2.6 km from the water. Comparison: percentile 99 of all samples in Slovakia.

• AluminiumAlextreme (top 1 %)
  highest 5.05 mg/lmedian 0.0200 mg/l13 samples23 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 2.6 km from the water. Comparison: percentile 99 of all samples in Slovakia.

• ArsenicAsextreme (top 1 %)
  highest 116 μg/lmedian 0.500 μg/l13 samples54 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 860 m from the water. Comparison: percentile 99 of all samples in Slovakia.

• AntimonySbextreme (top 1 %)
  highest 34.2 μg/lmedian 0.200 μg/l13 samples46 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: štôlňa1994, 2.3 km from the water. Comparison: percentile 99 of all samples in Slovakia.

• ChromiumCrextreme (top 1 %)
  highest 13.1 μg/lmedian 0.250 μg/l13 samples54 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 2.6 km from the water. Comparison: percentile 99 of all samples in Slovakia.

• CadmiumCdhigh (top 5 %)
  highest 1.50 μg/lmedian 0.250 μg/l13 samples92 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 2.6 km from the water. Comparison: percentile 98 of all samples in Slovakia.

• LithiumLihigh (top 5 %)
  highest 77.0 μg/lmedian 9.00 μg/l13 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: štôlňa1994, 2.3 km from the water. Comparison: percentile 96 of all samples in Slovakia.

• SeleniumSehigh (top 5 %)
  highest 3.10 μg/lmedian 0.500 μg/l13 samples92 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1994, 2.8 km from the water. Comparison: percentile 96 of all samples in Slovakia.

• LeadPbhigh (top 5 %)
  highest 3.00 μg/lmedian 1.00 μg/l13 samples46 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 860 m from the water. Comparison: percentile 95 of all samples in Slovakia.

• ZincZnelevated (top 10 %)
  highest 476 μg/lmedian 9.00 μg/l13 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 2.6 km from the water. Comparison: percentile 90 of all samples in Slovakia.

• IronFetypical value
  highest 0.00500 mg/lmedian 0.00500 mg/l4 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 2.9 km from the water. Comparison: percentile 50 of all samples in Slovakia.

• MercuryHgbelow half of Slovakia
  highest 0.100 μg/lmedian 0.100 μg/l13 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 2.9 km from the water. Comparison: percentile 46 of all samples in Slovakia.

Radon in waters

Mine workings, deposits and ore occurrences

Old mine workings outside mining areas (Geofond register), deposits and mining areas, and the metallogenetic map. Gold, silver and other metals near streams can get into sediments and water.

What was mined here (according to the register of old mine workings)

• Au92×
• Sb48×
• Ag17×
• As2×
• Pb1×
• Zn1×
• Ba1×

Types of mining objects

• adit101×
• spoil heap36×
• pinge (mining subsidence pit), line of pinge pits15×
• other type of object13×
• shaft8×
• tailings pond1×

Nearest old mine workings

Deposits and mining areas

Ore occurrences in the metallogenic map

Boreholes and Geofond archive reports

Register of hydrogeological boreholes, other boreholes and geothermal boreholes. Each borehole has a report in the Geofond archive (geological profiles, pumping tests, chemical analyses of the water); the report number is in the table.

334 boreholes in the 3 km zone, of which 15 hydrogeological and 319 other; with an archive report number 334.

Borehole depths

• up to 10 m22×
• 10–30 m43×
• 30–100 m149×
• 100–300 m79×
• over 300 m36×

Nearest boreholes

Geothermal energy and mineral waters

Geothermal boreholes (wellhead water temperature, yield, chemical type) and sources of geothermal and mineral waters within 10 km. Data on the use and existence of a borehole come from the Geofond register.

Sources of geothermal and mineral waters

Environmental burdens, landfills and anthropogenic sediments

Recorded environmental burdens (industrial sites, landfills, mining), the register of waste landfills and monitoring of anthropogenic sediments (industrial sludge). It is a list of places, not a measurement of water pollution.

Environmental burdens