Lomnický 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.

Quaternary cover

• deluvial sediments100%SR 16 %

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

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

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Direction of neotectonic movements

• medium uplift100%SR 32 %

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Regional geological division

• Inner Carpathian Paleogene100%SR 11 %

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

Regional geological division (subunits)

• Spiš–Šariš Paleogene100%SR 5.8 %

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

Engineering-geological districts

• region of sandstone-conglomerate rocks100%SR 3.4 %

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Engineering-geological formations

• flysch formation100%SR 13 %

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 %

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The map covers 0 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)

• Sandstones100%SR 15 %

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 (Sandstones)100%SR 15 %

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

• intergranular50%SR 86 %
• fissure50%SR 12 %

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Hydrogeological function

• aquifer100%SR 95 %

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

Main hydrogeological region

• Paleogene Levočské vrchy100%SR 1.2 %

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Geothermal groundwater bodies

• Levoča Basin – NE part100%SR 5.0 %

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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

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

Major ions

• FluoridesF0.0915 mg/lpercentile 37
• BicarbonatesHCO3148 mg/lpercentile 31
• CalciumCa42.0 mg/lpercentile 29
• MagnesiumMg9.24 mg/lpercentile 29
• SulphatesSO426.1 mg/lpercentile 28
• SodiumNa3.36 mg/lpercentile 15
• PotassiumK1.18 mg/lpercentile 14
• ChloridesCl2.18 mg/lpercentile 11

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

• AmmoniumNH40.0455 mg/lpercentile 23
• Chemical oxygen demandChSK2.08 mg/lpercentile 22
• NitratesNO33.27 mg/lpercentile 19
• PhosphatesPO40.0210 mg/lpercentile 10

Metals

• AluminiumAl107 μg/lpercentile 63
• IronFe0.120 mg/lpercentile 56
• ZincZn7.32 μg/lpercentile 53
• ManganeseMn11.3 μg/lpercentile 24

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

• ChromiumCr107 mg/kgpercentile 85
• MolybdenumMo0.579 mg/kgpercentile 78
• NickelNi29.7 mg/kgpercentile 70
• MercuryHg0.123 mg/kgpercentile 58
• CadmiumCd0.220 mg/kgpercentile 57
• VanadiumV69.9 mg/kgpercentile 54
• BismuthBi0.217 mg/kgpercentile 50
• AntimonySb0.518 mg/kgpercentile 38
• ArsenicAs5.72 mg/kgpercentile 37
• TinSn2.29 mg/kgpercentile 34
• SeleniumSe0.168 mg/kgpercentile 29
• LeadPb12.3 mg/kgpercentile 28
• CobaltCo7.05 mg/kgpercentile 28
• ZincZn69.6 mg/kgpercentile 18
• CopperCu14.3 mg/kgpercentile 9

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)K1.36 %percentile 66
• Equivalent thorium (eTh)eTh6.58 ppm22th percentile
• Equivalent uranium (eU)eU2.09 ppm10th 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 137CsCS1372,065 Bq/m²percentile 71

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.

Geothermal groundwater bodies beneath the water line

• Levoča Basin – NE part100%SR 5.0 %

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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)539–1 132m a.s.l.
• Average elevation of the units788m a.s.l.
• Average slope14.9°
• Average January temperature-5.8°C
• Average July temperature14.8°C
• Annual precipitation950mm

Geomorphological units

• Levoča Hills100%SR 1.1 %

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Geomorphological regions

• Podhôľne–Magura area100%SR 4.5 %

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Climatic-geographical types

• mountain climate100%SR 33 %

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Susceptibility of soils to acidification

• soils moderately susceptible to acidification100%SR 25 %

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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.

• 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: Lomnický potok2007, 460 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: Lomnický potok2007, 460 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: Lomnický potok2007, 460 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: Lomnický potok2007, 460 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: Lomnický potok2007, 460 m from the water. Comparison: percentile 32 of all samples in Slovakia.

• BariumBabelow half of Slovakia
  highest 22.0 μg/lmedian 22.0 μg/l1 sample
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Lomnický potok2007, 460 m from the water. Comparison: percentile 26 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: Lomnický potok, 460 m from the water. Comparison: percentile 26 of all samples in Slovakia.

• CopperCubelow 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: Lomnický potok2007, 460 m from the water. Comparison: percentile 22 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: Lomnický potok2007, 460 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 dioxideSiO2below half of Slovakia
  highest 8.06 mg/lmedian 8.06 mg/l1 sample
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Lomnický potok2007, 460 m from the water. Comparison: percentile 33 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)8 samples, at most 155 grains
• Limonite (FeO(OH)·nH₂O)6 samples, at most 55 grains
• Magnetite (Fe₃O₄)6 samples, at most 55 grains
• Rutil (TiO₂)6 samples, at most 815 grains
• Anatas (TiO₂)5 samples, at most 5 grains
• Hematite (Fe₂O₃)4 samples, at most 55 grains
• Ilmenit (FeTiO₃)3 samples, at most 815 grains
• Monazit ((Ce,La,Nd)PO₄)2 samples, at most 5 grains
• Pyrite (FeS₂)2 samples, at most 5 grains

Rock-forming and accessory minerals

• Spinel (Cr-spinel) ((Mg,Fe)(Al,Cr)₂O₄)9 samples, at most 1815 grains
• Granáty ((Fe,Mg,Ca,Mn)₃Al₂Si₃O₁₂)6 samples, at most 4115 grains
• Zirconium (ZrSiO₄)6 samples, at most 815 grains
• Tourmalines (complex borosilicate)4 samples, at most 55 grains
• Pyroxény ((Mg,Fe,Ca)₂Si₂O₆)2 samples, at most 55 grains
• Epidot (Ca₂(Al,Fe)₃Si₃O₁₂(OH))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

• MercuryHghigh (top 5 %)
  highest 0.200 μg/lmedian 0.100 μg/l14 samples93 % 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 95 of all samples in Slovakia.

• CopperCuelevated (top 10 %)
  highest 5.60 μg/lmedian 1.05 μg/l14 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 1.1 km from the water. Comparison: percentile 95 of all samples in Slovakia.

• AntimonySbelevated (top 10 %)
  highest 0.400 μg/lmedian 0.100 μg/l14 samples86 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 1.1 km from the water. Comparison: percentile 90 of all samples in Slovakia.

• AluminiumAlslightly elevated
  highest 0.0300 mg/lmedian 0.00500 mg/l14 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, 3.0 km from the water. Comparison: percentile 85 of all samples in Slovakia.

• SeleniumSeslightly elevated
  highest 1.20 μg/lmedian 0.500 μg/l14 samples86 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 2.1 km from the water. Comparison: percentile 85 of all samples in Slovakia.

• ChromiumCrslightly elevated
  highest 0.800 μg/lmedian 0.250 μg/l14 samples93 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 2.3 km from the water. Comparison: percentile 75 of all samples in Slovakia.

• LeadPbslightly elevated
  highest 1.00 μg/lmedian 0.500 μg/l14 samples64 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 2.3 km from the water. Comparison: percentile 75 of all samples in Slovakia.

• LithiumLitypical value
  highest 15.0 μg/lmedian 5.00 μg/l14 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 1.5 km from the water. Comparison: percentile 72 of all samples in Slovakia.

• IronFetypical value
  highest 0.00500 mg/lmedian 0.00500 mg/l12 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, 2.7 km from the water. Comparison: percentile 50 of all samples in Slovakia.

• CadmiumCdbelow half of Slovakia
  highest 0.250 μg/lmedian 0.250 μg/l14 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, 3.0 km from the water. Comparison: percentile 47 of all samples in Slovakia.

• ZincZnbelow half of Slovakia
  highest 15.0 μg/lmedian 10.0 μg/l14 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 2.1 km from the water. Comparison: percentile 41 of all samples in Slovakia.

• ArsenicAsbelow half of Slovakia
  highest 0.500 μg/lmedian 0.500 μg/l14 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, 3.0 km from the water. Comparison: percentile 38 of all samples in Slovakia.

Radon in waters

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.

11 boreholes in the 3 km zone, of which 4 hydrogeological and 7 other; with an archive report number 11.

Borehole depths

• up to 10 m7×
• 10–30 m3×
• 30–100 m0×
• 100–300 m1×
• over 300 m0×

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.

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

• Landslides11×

Degree of activity

• Potenciálny11×

Current state

• Processed only in the scope of registration on a scale of 1:25,0004×
• SD taken from archival materials, ktorá bola konfrontova1×