Červený 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 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

Quaternary cover

• Typical thickness of the Quaternary cover1.0m

• 0 – 2100%SR 16 %

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Tectonic division

• NEOALPÍNSKE TEKTONICKÉ ŠTRUKTÚRY ZÁPADNÝCH KARPÁT100%SR 84 %

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Neotectonic units

• negative unit (intermountain basins)100%SR 14 %

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Direction of neotectonic movements

• medium subsidence100%SR 6.8 %

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Regional geological division

• Inner Carpathian Paleogene100%SR 11 %

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Regional geological division (subunits)

• Poprad Basin100%SR 1.4 %

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Engineering-geological districts

• region of mountain-stream deposits100%SR 21 %

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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 1 of 2 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)

• Gravel100%SR 52 %

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 (Gravel)100%SR 22 %

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Main hydrogeological region

• kryštalinikum časti Vysokých Tatier a kvartér ich predpolia100%SR 1.2 %

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Geothermal groundwater bodies

• Levoča Basin – W and S part100%SR 9.5 %

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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–HCO₃–SO₄

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

Major ions

• ChloridesCl16.2 mg/lpercentile 63
• SulphatesSO445.9 mg/lpercentile 57
• FluoridesF0.110 mg/lpercentile 48
• SodiumNa6.87 mg/lpercentile 39
• MagnesiumMg10.6 mg/lpercentile 34
• CalciumCa45.0 mg/lpercentile 31
• BicarbonatesHCO3115 mg/lpercentile 22
• PotassiumK1.53 mg/lpercentile 21

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

• AmmoniumNH40.372 mg/lpercentile 82
• Chemical oxygen demandChSK4.24 mg/lpercentile 71
• PhosphatesPO40.222 mg/lpercentile 62
• NitratesNO36.19 mg/lpercentile 49

Metals

• IronFe0.493 mg/lpercentile 92
• AluminiumAl312 μg/lpercentile 89
• ManganeseMn104 μg/lpercentile 80
• ZincZn6.35 μg/lpercentile 47

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

• AntimonySb42.2 mg/kgpercentile 95
• NickelNi42.9 mg/kgpercentile 91
• ArsenicAs12.1 mg/kgpercentile 81
• LeadPb22.4 mg/kgpercentile 77
• MolybdenumMo0.547 mg/kgpercentile 75
• ZincZn127 mg/kgpercentile 72
• CadmiumCd0.301 mg/kgpercentile 71
• MercuryHg0.159 mg/kgpercentile 67
• CopperCu26.4 mg/kgpercentile 61
• BismuthBi0.247 mg/kgpercentile 61
• VanadiumV71.6 mg/kgpercentile 58
• ChromiumCr76.6 mg/kgpercentile 57
• TinSn2.74 mg/kgpercentile 53
• SeleniumSe0.250 mg/kgpercentile 51
• CobaltCo6.85 mg/kgpercentile 25

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)K1.55 %percentile 87
• Equivalent thorium (eTh)eTh7.49 ppm55th percentile
• Equivalent uranium (eU)eU2.43 ppm30th 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 137CsCS1371,019 Bq/m²percentile 19

Radon risk by isopleths

• medium100%SR 64 %

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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.

• Rock temperature at 1,000 m depth35°C
• Surface heat flow density65mW/m²

Geothermal groundwater bodies beneath the water line

• Levoča Basin – W and S part100%SR 9.5 %

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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)585–1 095m a.s.l.
• Average elevation of the units759m a.s.l.
• Average slope3.3°
• Average January temperature-4.8°C
• Average July temperature16.5°C
• Annual precipitation725mm

Geomorphological units

• Sub-Tatra Basin100%SR 3.9 %

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Geomorphological regions

• Fatra–Tatra area100%SR 21 %

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Climatic-geographical types

• basin climate100%SR 29 %

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Susceptibility of soils to acidification

• soils susceptible to acidification50%SR 31 %
• naturally acidic soils50%SR 8.5 %

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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

• Inner Carpathian Paleogene100%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.

• CopperCutypical value
  highest 1.40 μg/lmedian 1.40 μg/l1 sample
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Mlynica, 1700 m JJV od K7181996, 30 m from the water. Comparison: percentile 52 of all samples in Slovakia.

• StrontiumSrtypical value
  highest 180 μg/lmedian 180 μg/l1 sample
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Mlynica, 1700 m JJV od K7181996, 30 m from the water. Comparison: percentile 52 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: Mlynica, 1700 m JJV od K7181996, 30 m from the water. Comparison: percentile 43 of all samples in Slovakia.

• AntimonySbbelow 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: Mlynica, 1700 m JJV od K7181996, 30 m from the water. Comparison: percentile 37 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: Mlynica, 1700 m JJV od K7181996, 30 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: Mlynica, 1700 m JJV od K7181996, 30 m from the water. Comparison: percentile 32 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: Mlynica, 1700 m JJV od K718, 30 m from the water. Comparison: percentile 26 of all samples in Slovakia.

• ArsenicAsbelow 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: Mlynica, 1700 m JJV od K7181996, 30 m from the water. Comparison: percentile 22 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 25.3 mg/lmedian 25.3 mg/l1 sample
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Mlynica, 1700 m JJV od K7181996, 30 m from the water. Comparison: percentile 83 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.

• Barite (BaSO₄)7 samples, at most 5 grains
• Magnetite (Fe₃O₄)5 samples, at most 1815 grains
• Hematite (Fe₂O₃)4 samples, at most 4115 grains
• Ilmenit (FeTiO₃)4 samples, at most 4115 grains
• Rutil (TiO₂)4 samples, at most 815 grains
• Anatas (TiO₂)4 samples, at most 5 grains
• Pyrite (FeS₂)4 samples, at most 5 grains
• Limonite (FeO(OH)·nH₂O)3 samples, at most 5 grains
• Scheelit (CaWO₄)1 sample, at most 5 grains
• Monazit ((Ce,La,Nd)PO₄)1 sample, at most 5 grains
• Cinabarit (HgS)1 sample, at most 3 grains

Rock-forming and accessory minerals

• Epidot (Ca₂(Al,Fe)₃Si₃O₁₂(OH))5 samples, at most 1815 grains
• Granáty ((Fe,Mg,Ca,Mn)₃Al₂Si₃O₁₂)5 samples, at most 315 grains
• Tourmalines (complex borosilicate)5 samples, at most 55 grains
• Apatit (Ca₅(PO₄)₃(F,Cl,OH))4 samples, at most 155 grains
• Pyroxény ((Mg,Fe,Ca)₂Si₂O₆)3 samples, at most 5 grains
• Zirconium (ZrSiO₄)3 samples, at most 815 grains
• Staurolit (Fe₂Al₉Si₄O₂₃(OH))2 samples, at most 5 grains
• Amfiboly (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂)1 sample, at most 5 grains
• Spinel (Cr-spinel) ((Mg,Fe)(Al,Cr)₂O₄)1 sample, at most 5 grains
• Titanit (CaTiSiO₅)1 sample, at most 365 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

• MercuryHgextreme (top 1 %)
  highest 1.00 μg/lmedian 0.100 μg/l20 samples70 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: drén1994, 780 m from the water. Comparison: percentile 99 of all samples in Slovakia.

• CadmiumCdextreme (top 1 %)
  highest 10.0 μg/lmedian 0.250 μg/l20 samples90 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1992, 2.7 km from the water. Comparison: percentile 99 of all samples in Slovakia.

• LeadPbhigh (top 5 %)
  highest 6.00 μg/lmedian 0.500 μg/l20 samples70 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1992, 1.0 km from the water. Comparison: percentile 97 of all samples in Slovakia.

• AluminiumAlhigh (top 5 %)
  highest 0.110 mg/lmedian 0.0200 mg/l20 samples25 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: drén1994, 830 m from the water. Comparison: percentile 96 of all samples in Slovakia.

• ZincZnhigh (top 5 %)
  highest 1,324 μg/lmedian 15.5 μg/l20 samples15 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1992, 2.6 km from the water. Comparison: percentile 95 of all samples in Slovakia.

• LithiumLielevated (top 10 %)
  highest 43.0 μg/lmedian 16.5 μg/l20 samples20 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1994, 1.9 km from the water. Comparison: percentile 93 of all samples in Slovakia.

• ArsenicAsslightly elevated
  highest 1.80 μg/lmedian 0.500 μg/l20 samples90 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1992, 2.5 km from the water. Comparison: percentile 87 of all samples in Slovakia.

• AntimonySbslightly elevated
  highest 0.300 μg/lmedian 0.100 μg/l20 samples60 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: drén1994, 2.5 km from the water. Comparison: percentile 87 of all samples in Slovakia.

• SeleniumSeslightly elevated
  highest 1.20 μg/lmedian 0.500 μg/l20 samples90 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: drén1994, 830 m from the water. Comparison: percentile 85 of all samples in Slovakia.

• ChromiumCrslightly elevated
  highest 1.50 μg/lmedian 0.500 μg/l20 samples45 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1994, 1.8 km from the water. Comparison: percentile 84 of all samples in Slovakia.

• CopperCuslightly elevated
  highest 2.50 μg/lmedian 1.00 μg/l20 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: drén1994, 1.9 km from the water. Comparison: percentile 80 of all samples in Slovakia.

• IronFetypical value
  highest 0.00500 mg/lmedian 0.00500 mg/l2 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1992, 110 m from the water. Comparison: percentile 50 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.

Deposits and mining areas

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 20 hydrogeological and 124 other; with an archive report number 144.

Borehole depths

• up to 10 m85×
• 10–30 m40×
• 30–100 m3×
• 100–300 m0×
• over 300 m1×

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

• Landslides7×

Degree of activity

• Potenciálny7×

Current state

• Processed only in the scope of registration on a scale of 1:25,0005×
• SD taken from archival materials, ktorá bola konfrontova2×