Jasenica – Starý potok

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 alluvium80%SR 72 %
• Young sediments20%SR 8.6 %

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

Quaternary cover

• deluvial sediments100%SR 16 %

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• Typical thickness of the Quaternary cover3.5m

• 2 – 5100%SR 48 %

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Tectonic division

• NEOALPÍNSKE TEKTONICKÉ ŠTRUKTÚRY ZÁPADNÝCH KARPÁT100%SR 84 %

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Neotectonic units

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

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Direction of neotectonic movements

• large uplift100%SR 26 %

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Regional geological division

• neovolcanic rocks100%SR 10 %

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Regional geological division (subunits)

• Central Slovak neovolcanic rocks100%SR 8.8 %

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Engineering-geological districts

• region of mountain-stream deposits50%SR 21 %
• region of colluvial sediments50%SR 1.8 %

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Engineering-geological formations

• formation of Quaternary sediments100%SR 71 %

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Susceptibility of the area to slope deformations

• Region of stable areas100%SR 95 %

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The map covers 5 of 8 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)

• Acid volcanic rocks75%SR 3.2 %
• Gravel13%SR 52 %
• Basic volcanic rocks13%SR 6.6 %

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 vody75%SR 3.2 %
• Menšie zvodnence s medzizrnovým alebo puklinovým typom priepustnosti alebo oblasti s takmer žiadnymi množstvami podzemnej vody (Gravel)13%SR 22 %
• Menšie zvodnence s medzizrnovým alebo puklinovým typom priepustnosti alebo oblasti s takmer žiadnymi množstvami podzemnej vody13%SR 6.4 %

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Main hydrogeological region

• neovolcanic rocks of the northern slopes of Štiavnické vrchy and Javoria83%SR 1.5 %
• Quaternary Niva Hrona and Slatina from Slovenská Ľupča to Tlmače17%SR 0.0 %

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Geothermal groundwater bodies

• Bátovce and Rykynčice Depression100%SR 4.4 %

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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–SO₄–HCO₃

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

Major ions

• SulphatesSO479.9 mg/lpercentile 81
• PotassiumK6.08 mg/lpercentile 81
• FluoridesF0.138 mg/lpercentile 61
• ChloridesCl11.0 mg/lpercentile 55
• SodiumNa9.74 mg/lpercentile 53
• MagnesiumMg10.8 mg/lpercentile 35
• CalciumCa39.1 mg/lpercentile 27
• BicarbonatesHCO391.3 mg/lpercentile 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)

Nutrients and organic pollution

• AmmoniumNH40.756 mg/lpercentile 91
• PhosphatesPO40.712 mg/lpercentile 89
• Chemical oxygen demandChSK3.53 mg/lpercentile 58
• NitratesNO37.24 mg/lpercentile 58

Metals

• ZincZn160 μg/lpercentile 95
• AluminiumAl572 μg/lpercentile 95
• ManganeseMn311 μg/lpercentile 93
• IronFe0.297 mg/lpercentile 84

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

• CadmiumCd4.21 mg/kgpercentile 96
• CobaltCo20.5 mg/kgpercentile 96
• ZincZn575 mg/kgpercentile 96
• LeadPb99.6 mg/kgpercentile 95
• VanadiumV129 mg/kgpercentile 95
• CopperCu59.8 mg/kgpercentile 91
• MolybdenumMo0.710 mg/kgpercentile 87
• BismuthBi0.363 mg/kgpercentile 82
• MercuryHg0.252 mg/kgpercentile 80
• AntimonySb1.40 mg/kgpercentile 79
• TinSn3.20 mg/kgpercentile 68
• SeleniumSe0.276 mg/kgpercentile 57
• ArsenicAs5.33 mg/kgpercentile 31
• ChromiumCr46.0 mg/kgpercentile 12
• NickelNi14.9 mg/kgpercentile 12

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.

• Equivalent uranium (eU)eU3.64 ppm95th percentile
• Equivalent thorium (eTh)eTh10.0 ppm94th percentile
• Potassium (K)K1.63 %percentile 90

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 137CsCS1374,986 Bq/m²percentile 95

Radon risk by isopleths

• medium88%SR 64 %
• low13%SR 36 %

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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.

Geothermal groundwater bodies beneath the water line

• Bátovce and Rykynčice Depression100%SR 4.4 %

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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)176–940m a.s.l.
• Average elevation of the units534m a.s.l.
• Average slope12.5°
• Average January temperature-4.9°C
• Average July temperature16.9°C
• Annual precipitation800mm

Geomorphological units

• Štiavnica Mountains88%SR 2.2 %
• Kremnica Mountains13%SR 0.0 %

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Geomorphological regions

• Slovak Central Mountains100%SR 9.1 %

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Climatic-geographical types

• mountain climate100%SR 33 %

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Susceptibility of soils to acidification

• soils moderately susceptible to acidification75%SR 25 %
• soils susceptible to acidification25%SR 31 %

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Soil contamination (map 1:500,000)

• uncontaminated soil, the geogenically determined content of some risk elements reaches limit values A100%SR 45 %

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Lithogeochemical types

• Neogene volcanics100%SR 11 %

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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.

• LithiumLihigh (top 5 %)
  highest 82.0 μg/lmedian 62.0 μg/l7 samples43 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Jasenica2011, 70 m from the water. Comparison: percentile 99 of all samples in Slovakia.

• ArsenicAshigh (top 5 %)
  highest 9.00 μg/lmedian 0.500 μg/l7 samples71 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Hron1993, 590 m from the water. Comparison: percentile 96 of all samples in Slovakia.

• CadmiumCdhigh (top 5 %)
  highest 0.900 μg/lmedian 0.250 μg/l8 samples38 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Jasenica, 70 m from the water. Comparison: percentile 95 of all samples in Slovakia.

• AntimonySbelevated (top 10 %)
  highest 2.30 μg/lmedian 0.500 μg/l3 samples67 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Hron1993, 590 m from the water. Comparison: percentile 92 of all samples in Slovakia.

• CopperCuelevated (top 10 %)
  highest 5.00 μg/lmedian 2.73 μg/l8 samples25 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Jasenica2011, 50 m from the water. Comparison: percentile 91 of all samples in Slovakia.

• ChromiumCrslightly elevated
  highest 2.50 μg/lmedian 1.00 μg/l7 samples86 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Hron1993, 590 m from the water. Comparison: percentile 78 of all samples in Slovakia.

• StrontiumSrtypical value
  highest 230 μg/lmedian 200 μg/l3 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Hron1993, 590 m from the water. Comparison: percentile 60 of all samples in Slovakia.

• BariumBatypical value
  highest 48.0 μg/lmedian 30.0 μg/l7 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Jasenica2011, 50 m from the water. Comparison: percentile 58 of all samples in Slovakia.

• SeleniumSebelow half of Slovakia
  highest 0.500 μg/lmedian 0.500 μg/l7 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Jasenica2011, 50 m from the water. Comparison: percentile 46 of all samples in Slovakia.

• LeadPbbelow half of Slovakia
  highest 2.50 μg/lmedian 2.50 μg/l8 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Jasenica2011, 50 m from the water. Comparison: percentile 43 of all samples in Slovakia.

Major ions, mineralisation and pH

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

• Silicon dioxideSiO2high (top 5 %)
  highest 41.0 mg/lmedian 25.2 mg/l7 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Jasenica2011, 50 m from the water. Comparison: percentile 95 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.

• Magnetite (Fe₃O₄)42 samples, at most 4115 grains
• Ilmenit (FeTiO₃)41 samples, at most 4115 grains
• Pyrite (FeS₂)39 samples, at most 4115 grains
• Barite (BaSO₄)37 samples, at most 315 grains
• Limonite (FeO(OH)·nH₂O)37 samples, at most 1815 grains
• Sphalerite (ZnS)25 samples, at most 500 grains
• Hematite (Fe₂O₃)25 samples, at most 1815 grains
• Rutil (TiO₂)16 samples, at most 315 grains
• Anatas (TiO₂)11 samples, at most 55 grains
• Chalcopyrite (CuFeS₂)10 samples, at most 400 grains
• Galena (PbS)6 samples, at most 50 grains
• Gold (Au)6 samples, at most 2 grains
• Cinabarit (HgS)3 samples, at most 5 grains
• Arsenopyrite (FeAsS)2 samples, at most 5 grains
• Scheelit (CaWO₄)2 samples, at most 4 grains
• Monazit ((Ce,La,Nd)PO₄)1 sample, at most 5 grains
• Kasiterit (SnO₂)1 sample, at most 1 grains

Nearest samples with gold

Rock-forming and accessory minerals

• Pyroxény ((Mg,Fe,Ca)₂Si₂O₆)42 samples, at most 4115 grains
• Zirconium (ZrSiO₄)42 samples, at most 815 grains
• Amfiboly (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂)41 samples, at most 1815 grains
• Korund (Al₂O₃)38 samples, at most 15 grains
• Apatit (Ca₅(PO₄)₃(F,Cl,OH))35 samples, at most 55 grains
• Granáty ((Fe,Mg,Ca,Mn)₃Al₂Si₃O₁₂)33 samples, at most 1815 grains
• Epidot (Ca₂(Al,Fe)₃Si₃O₁₂(OH))12 samples, at most 315 grains
• Sillimanit (Al₂SiO₅)5 samples, at most 55 grains
• Staurolit (Fe₂Al₉Si₄O₂₃(OH))4 samples, at most 315 grains
• Kyanit (Al₂SiO₅)3 samples, at most 55 grains
• Andaluzit (Al₂SiO₅)1 sample, at most 5 grains
• Titanit (CaTiSiO₅)1 sample, at most 63 grains
• Tourmalines (complex borosilicate)1 sample, 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.

Metals in groundwater

• CopperCuextreme (top 1 %)
  highest 128 μg/lmedian 0.700 μg/l46 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: štôlňa1991, 2.3 km from the water. Comparison: percentile 99 of all samples in Slovakia.

• AluminiumAlextreme (top 1 %)
  highest 14.2 mg/lmedian 0.0100 mg/l46 samples35 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: štôlňa1991, 2.3 km from the water. Comparison: percentile 99 of all samples in Slovakia.

• LeadPbextreme (top 1 %)
  highest 17.0 μg/lmedian 0.500 μg/l46 samples83 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: štôlňa1991, 2.3 km from the water. Comparison: percentile 99 of all samples in Slovakia.

• CadmiumCdextreme (top 1 %)
  highest 3.10 μg/lmedian 0.250 μg/l46 samples87 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: štôlňa1991, 2.3 km from the water. Comparison: percentile 99 of all samples in Slovakia.

• ZincZnhigh (top 5 %)
  highest 3,680 μg/lmedian 3.00 μg/l46 samples26 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: štôlňa1991, 2.3 km from the water. Comparison: percentile 98 of all samples in Slovakia.

• ArsenicAshigh (top 5 %)
  highest 6.90 μg/lmedian 1.00 μg/l46 samples43 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1991, 1.9 km from the water. Comparison: percentile 96 of all samples in Slovakia.

• AntimonySbhigh (top 5 %)
  highest 1.20 μg/lmedian 0.100 μg/l46 samples80 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1991, 2.5 km from the water. Comparison: percentile 96 of all samples in Slovakia.

• ChromiumCrhigh (top 5 %)
  highest 4.90 μg/lmedian 0.250 μg/l46 samples85 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň, 190 m from the water. Comparison: percentile 96 of all samples in Slovakia.

• LithiumLielevated (top 10 %)
  highest 52.0 μg/lmedian 2.00 μg/l46 samples33 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: štôlňa1991, 2.3 km from the water. Comparison: percentile 95 of all samples in Slovakia.

• SeleniumSeslightly elevated
  highest 1.30 μg/lmedian 0.500 μg/l46 samples96 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1991, 2.0 km from the water. Comparison: percentile 86 of all samples in Slovakia.

• IronFetypical value
  highest 0.00500 mg/lmedian 0.00500 mg/l27 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1991, 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/l46 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1991, 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)

• Au415×
• Ag375×
• Pb117×
• Zn117×
• Cu40×

Types of mining objects

• spoil heap142×
• adit122×
• pinge (mining subsidence pit), line of pinge pits108×
• shaft66×
• other type of object9×
• tailings pond4×

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.

144 boreholes in the 3 km zone, of which 37 hydrogeological and 107 other; with an archive report number 144.

Borehole depths

• up to 10 m40×
• 10–30 m36×
• 30–100 m10×
• 100–300 m33×
• over 300 m16×

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

Waste landfills

Landslides and slope deformations

Register of documented slope deformations (Geofond). Landslides by a stream can bring fine material into the water, change the bed and dam the channel.

Types of deformations

• Landslides27×
• Block fields3×
• Block fissures1×
• Block fields + landslides1×

Degree of activity

• Potenciálny16×
• Stabilizovaný14×
• Aktívny1×
• With stabilised and potential forms1×

Current state

• SD taken from archival materials, ktorá bola konfrontova24×
• SD zaregistrovaná v rámci terénneho výskumu na úlohe Atlas S4×
• Processed only in the scope of registration on a scale of 1:25,0002×