Slavkovský potok (Poprad)

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.

• Flysch100%SR 4.7 %

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

Flysch: Alternating sandstones and claystones; moderately mineralised water that turns turbid quickly in rain.

Geological age of the rocks

• Paleogene100%

Most common rock units

Quaternary cover

• glacifluvial sediments100%SR 0.5 %

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

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

• small subsidence100%SR 8.8 %

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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 deposits50%SR 21 %
• region of flyschoid rocks50%SR 5.4 %

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Engineering-geological formations

• formation of Quaternary sediments50%SR 71 %
• flysch formation50%SR 13 %

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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 5 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)50%SR 22 %
• Menšie zvodnence s medzizrnovým alebo puklinovým typom priepustnosti alebo oblasti s takmer žiadnymi množstvami podzemnej vody (Gravel)50%SR 0.3 %

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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–HCO₃–SO₄

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

Major ions

• ChloridesCl12.5 mg/lpercentile 58
• FluoridesF0.0995 mg/lpercentile 42
• SulphatesSO431.4 mg/lpercentile 36
• SodiumNa6.23 mg/lpercentile 35
• MagnesiumMg6.96 mg/lpercentile 20
• CalciumCa29.8 mg/lpercentile 19
• PotassiumK1.23 mg/lpercentile 15
• BicarbonatesHCO378.0 mg/lpercentile 13

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

• AmmoniumNH40.160 mg/lpercentile 62
• Chemical oxygen demandChSK3.56 mg/lpercentile 58
• PhosphatesPO40.171 mg/lpercentile 56
• NitratesNO36.31 mg/lpercentile 50

Metals

• IronFe0.434 mg/lpercentile 90
• AluminiumAl262 μg/lpercentile 86
• ManganeseMn73.6 μg/lpercentile 73
• ZincZn6.86 μg/lpercentile 51

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

• AntimonySb3.53 mg/kgpercentile 88
• NickelNi36.5 mg/kgpercentile 84
• BismuthBi0.341 mg/kgpercentile 79
• CadmiumCd0.337 mg/kgpercentile 75
• MercuryHg0.197 mg/kgpercentile 74
• LeadPb20.3 mg/kgpercentile 71
• ZincZn114 mg/kgpercentile 65
• MolybdenumMo0.422 mg/kgpercentile 58
• SeleniumSe0.270 mg/kgpercentile 55
• TinSn2.60 mg/kgpercentile 48
• CopperCu20.1 mg/kgpercentile 34
• ArsenicAs5.26 mg/kgpercentile 30
• VanadiumV58.8 mg/kgpercentile 26
• ChromiumCr52.0 mg/kgpercentile 19
• CobaltCo5.99 mg/kgpercentile 15

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)K1.52 %percentile 85
• Equivalent thorium (eTh)eTh7.13 ppm41th percentile
• Equivalent uranium (eU)eU2.11 ppm11th 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 137CsCS1371,362 Bq/m²percentile 42

Radon risk by isopleths

• medium80%SR 64 %
• low20%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.

• 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

• naturally acidic soils75%SR 8.5 %
• 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

• 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.

• CopperCuhigh (top 5 %)
  highest 14.4 μg/lmedian 1.60 μg/l5 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Matejovce, 400 m JJZ od K679 Zadné Rovné1997, 730 m from the water. Comparison: percentile 96 of all samples in Slovakia.

• StrontiumSrelevated (top 10 %)
  highest 604 μg/lmedian 135 μg/l7 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Matejovce, 400 m JJZ od K679 Zadné Rovné1997, 730 m from the water. Comparison: percentile 94 of all samples in Slovakia.

• CadmiumCdelevated (top 10 %)
  highest 0.500 μg/lmedian 0.150 μg/l5 samples80 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Matejovce, 400 m JJZ od K679 Zadné Rovné, 730 m from the water. Comparison: percentile 92 of all samples in Slovakia.

• LeadPbslightly elevated
  highest 3.50 μg/lmedian 2.50 μg/l5 samples80 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Matejovce, 400 m JJZ od K679 Zadné Rovné1997, 730 m from the water. Comparison: percentile 88 of all samples in Slovakia.

• LithiumLislightly elevated
  highest 13.0 μg/lmedian 5.00 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: Matejovce, 400 m JJZ od K679 Zadné Rovné1997, 730 m from the water. Comparison: percentile 78 of all samples in Slovakia.

• AntimonySbslightly elevated
  highest 0.650 μg/lmedian 0.500 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: Nová Lesná, Veľký Slavkov, bezmenný prítok Popradu1997, 740 m from the water. Comparison: percentile 77 of all samples in Slovakia.

• ChromiumCrtypical value
  highest 1.20 μg/lmedian 1.00 μg/l5 samples80 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Matejovce, 400 m JJZ od K679 Zadné Rovné1997, 730 m from the water. Comparison: percentile 66 of all samples in Slovakia.

• ArsenicAsbelow half of Slovakia
  highest 0.960 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: Nová Lesná, Veľký Slavkov, bezmenný prítok Popradu1997, 740 m from the water. Comparison: percentile 49 of all samples in Slovakia.

• SeleniumSebelow half of Slovakia
  highest 0.500 μg/lmedian 0.500 μg/l5 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Veľký Slavkov, 1400 m SV od K7061997, 40 m from the water. Comparison: percentile 46 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 24.5 mg/lmedian 18.5 mg/l7 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Nová Lesná, Veľký Slavkov, bezmenný prítok Popradu1997, 740 m from the water. Comparison: percentile 82 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.

• Cinabarit (HgS)23 samples, at most 50 grains
• Barite (BaSO₄)20 samples, at most 55 grains
• Pyrite (FeS₂)16 samples, at most 315 grains
• Ilmenit (FeTiO₃)13 samples, at most 4115 grains
• Rutil (TiO₂)11 samples, at most 55 grains
• Magnetite (Fe₃O₄)9 samples, at most 1815 grains
• Hematite (Fe₂O₃)8 samples, at most 4115 grains
• Limonite (FeO(OH)·nH₂O)8 samples, at most 315 grains
• Anatas (TiO₂)7 samples, at most 5 grains
• Scheelit (CaWO₄)6 samples, at most 400 grains
• Monazit ((Ce,La,Nd)PO₄)5 samples, at most 5 grains
• Gold (Au)2 samples, at most 1 grains
• Markazit (FeS₂)2 samples, at most 15 grains
• Chalcopyrite (CuFeS₂)1 sample, at most 5 grains

Nearest samples with gold

Rock-forming and accessory minerals

• Spinel (Cr-spinel) ((Mg,Fe)(Al,Cr)₂O₄)12 samples, at most 55 grains
• Granáty ((Fe,Mg,Ca,Mn)₃Al₂Si₃O₁₂)11 samples, at most 815 grains
• Tourmalines (complex borosilicate)11 samples, at most 5 grains
• Zirconium (ZrSiO₄)11 samples, at most 815 grains
• Epidot (Ca₂(Al,Fe)₃Si₃O₁₂(OH))10 samples, at most 1815 grains
• Apatit (Ca₅(PO₄)₃(F,Cl,OH))7 samples, at most 5 grains
• Pyroxény ((Mg,Fe,Ca)₂Si₂O₆)5 samples, at most 55 grains
• Staurolit (Fe₂Al₉Si₄O₂₃(OH))3 samples, at most 5 grains
• Titanit (CaTiSiO₅)3 samples, at most 31 grains
• Amfiboly (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂)2 samples, at most 5 grains
• Kyanit (Al₂SiO₅)1 sample, at most 5 grains
• Sillimanit (Al₂SiO₅)1 sample, at most 5 grains
• Andaluzit (Al₂SiO₅)1 sample, at most 5 grains
• Korund (Al₂O₃)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

• MercuryHgextreme (top 1 %)
  highest 1.00 μg/lmedian 0.100 μg/l29 samples72 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: drén1994, 1.4 km from the water. Comparison: percentile 99 of all samples in Slovakia.

• AluminiumAlextreme (top 1 %)
  highest 0.340 mg/lmedian 0.0100 mg/l29 samples41 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: drén1994, 30 m from the water. Comparison: percentile 99 of all samples in Slovakia.

• LeadPbhigh (top 5 %)
  highest 6.00 μg/lmedian 0.500 μg/l29 samples52 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1992, 2.4 km from the water. Comparison: percentile 97 of all samples in Slovakia.

• AntimonySbhigh (top 5 %)
  highest 1.40 μg/lmedian 0.100 μg/l29 samples62 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1992, 1.8 km from the water. Comparison: percentile 96 of all samples in Slovakia.

• ZincZnhigh (top 5 %)
  highest 1,324 μg/lmedian 13.0 μg/l29 samples34 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1992, 2.3 km from the water. Comparison: percentile 95 of all samples in Slovakia.

• CadmiumCdhigh (top 5 %)
  highest 0.500 μg/lmedian 0.250 μg/l29 samples93 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: drén1994, 30 m from the water. Comparison: percentile 95 of all samples in Slovakia.

• LithiumLielevated (top 10 %)
  highest 43.0 μg/lmedian 18.0 μg/l29 samples10 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1994, 90 m from the water. Comparison: percentile 93 of all samples in Slovakia.

• SeleniumSeelevated (top 10 %)
  highest 2.10 μg/lmedian 0.500 μg/l29 samples83 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1992, 1.8 km from the water. Comparison: percentile 93 of all samples in Slovakia.

• ChromiumCrelevated (top 10 %)
  highest 2.80 μg/lmedian 0.500 μg/l29 samples34 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: drenáž1992, 2.8 km from the water. Comparison: percentile 92 of all samples in Slovakia.

• ArsenicAsslightly elevated
  highest 2.00 μg/lmedian 0.500 μg/l29 samples93 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1992, 2.1 km from the water. Comparison: percentile 88 of all samples in Slovakia.

• CopperCuslightly elevated
  highest 3.00 μg/lmedian 0.600 μg/l29 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1992, 100 m from the water. Comparison: percentile 84 of all samples in Slovakia.

• IronFetypical value
  highest 0.00500 mg/lmedian 0.00500 mg/l5 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1992, 2.8 km 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.

331 boreholes in the 3 km zone, of which 52 hydrogeological and 279 other; with an archive report number 331.

Borehole depths

• up to 10 m217×
• 10–30 m89×
• 30–100 m2×
• 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

• Landslides8×

Degree of activity

• Potenciálny7×
• Aktívny1×

Current state

• Processed only in the scope of registration on a scale of 1:25,0004×
• SD taken from archival materials, ktorá bola konfrontova4×