VN Korytno II.

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.

• Young sediments50%SR 8.6 %
• River alluvium50%SR 72 %

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

Young sediments: Young unconsolidated sediments; fine material easily washes into the stream during rain.

Geological age of the rocks

• Quaternary100%

Most common rock units

Quaternary cover

• fluvial sediments of floodplains100%SR 68 %

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

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

• large uplift50%SR 26 %
• small uplift50%SR 7.7 %

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

Regional geological division

• Gemer Belt100%SR 5.9 %

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

Regional geological division (subunits)

• Galmus100%SR 0.0 %

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 2 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)

• Dolomity100%SR 1.8 %

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

Aquifer type

• Zvodnence s prevažne puklinovým typom priepustnosti, vrátane krasových (spevnené horninové masívy s diskontinuitami) (Dolomity; Nerozlíšené)100%SR 1.8 %

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

• Mesozoic of Galmus with the adjacent Paleozoic100%SR 0.0 %

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

Genetic type of groundwater

• carbonate100%SR 4.0 %

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

Chemical type of groundwater

• Ca-HCO3100%SR 6.1 %

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–SO₄–HCO₃

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

Major ions

• SulphatesSO4239 mg/lpercentile 96
• MagnesiumMg49.5 mg/lpercentile 95
• PotassiumK10.6 mg/lpercentile 93
• SodiumNa21.8 mg/lpercentile 82
• CalciumCa90.7 mg/lpercentile 80
• FluoridesF0.182 mg/lpercentile 76
• ChloridesCl24.9 mg/lpercentile 75
• BicarbonatesHCO3243 mg/lpercentile 61

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

• PhosphatesPO40.426 mg/lpercentile 77
• AmmoniumNH40.119 mg/lpercentile 53
• NitratesNO35.82 mg/lpercentile 46
• Chemical oxygen demandChSK2.76 mg/lpercentile 39

Metals

• ManganeseMn216 μg/lpercentile 91
• IronFe0.326 mg/lpercentile 86
• AluminiumAl192 μg/lpercentile 78
• ZincZn3.05 μg/lpercentile 21

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

• MercuryHg112 mg/kgpercentile 98
• BismuthBi58.3 mg/kgpercentile 98
• AntimonySb1,126 mg/kgpercentile 98
• CopperCu3,324 mg/kgpercentile 98
• ArsenicAs465 mg/kgpercentile 98
• SeleniumSe6.47 mg/kgpercentile 98
• MolybdenumMo2.35 mg/kgpercentile 95
• CobaltCo17.9 mg/kgpercentile 95
• TinSn7.25 mg/kgpercentile 95
• CadmiumCd1.04 mg/kgpercentile 94
• NickelNi42.2 mg/kgpercentile 91
• ZincZn178 mg/kgpercentile 86
• LeadPb25.9 mg/kgpercentile 83
• ChromiumCr97.8 mg/kgpercentile 80
• VanadiumV81.0 mg/kgpercentile 74

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)K1.29 %percentile 45
• Equivalent uranium (eU)eU2.38 ppm27th percentile
• Equivalent thorium (eTh)eTh6.33 ppm16th 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 137CsCS1371,787 Bq/m²percentile 63

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.

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)368–1 012m a.s.l.
• Average elevation of the units622m a.s.l.
• Average slope17.9°
• Average January temperature-3.8°C
• Average July temperature17.8°C
• Annual precipitation700mm

Geomorphological units

• Volovec Mountains100%SR 2.8 %

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

Geomorphological regions

• Slovak Ore Mountains100%SR 10 %

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

Climatic-geographical types

• basin climate100%SR 29 %

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

Susceptibility of soils to acidification

• soils moderately susceptible to acidification100%SR 25 %

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

Lithogeochemical types

• Inner Carpathian Paleogene100%SR 11 %

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.

• AntimonySbextreme (top 1 %)
  highest 45.0 μg/lmedian 13.0 μg/l5 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: 1000m SZ od K6641992, 660 m from the water. Comparison: percentile 99 of all samples in Slovakia.

• LithiumLiextreme (top 1 %)
  highest 116 μg/lmedian 20.0 μg/l5 samples40 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: 800m SSV od K6641992, 300 m from the water. Comparison: percentile 99 of all samples in Slovakia.

• ArsenicAsextreme (top 1 %)
  highest 27.0 μg/lmedian 6.00 μg/l5 samples20 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: 1000m SZ od K6641992, 660 m from the water. Comparison: percentile 99 of all samples in Slovakia.

• ChromiumCrelevated (top 10 %)
  highest 5.50 μg/lmedian 1.90 μg/l5 samples40 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: 2000m V od K640 Babiná1992, 440 m from the water. Comparison: percentile 93 of all samples in Slovakia.

• CopperCuelevated (top 10 %)
  highest 5.00 μg/lmedian 3.00 μg/l5 samples20 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: 1000m SZ od K6641992, 660 m from the water. Comparison: percentile 91 of all samples in Slovakia.

• StrontiumSrslightly elevated
  highest 450 μg/lmedian 300 μg/l5 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: 800m SSV od K6641992, 300 m from the water. Comparison: percentile 87 of all samples in Slovakia.

• BariumBaslightly elevated
  highest 70.0 μg/lmedian 60.0 μg/l5 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: 2000m V od K640 Babiná1992, 440 m from the water. Comparison: percentile 78 of all samples in Slovakia.

• CadmiumCdslightly elevated
  highest 0.250 μg/lmedian 0.250 μg/l5 samples40 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: 2000m V od K640 Babiná, 440 m from the water. Comparison: percentile 75 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: 2000m V od K640 Babiná1992, 440 m from the water. Comparison: percentile 46 of all samples in Slovakia.

• LeadPbbelow half of Slovakia
  highest 2.50 μg/lmedian 2.50 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: 2000m V od K640 Babiná1992, 440 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 dioxideSiO2typical value
  highest 14.7 mg/lmedian 7.86 mg/l5 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: 800m SSV od K6641992, 300 m from the water. Comparison: percentile 64 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)6 samples, at most 4115 grains
• Hematite (Fe₂O₃)6 samples, at most 4115 grains
• Magnetite (Fe₃O₄)6 samples, at most 315 grains
• Pyrite (FeS₂)6 samples, at most 1815 grains
• Rutil (TiO₂)6 samples, at most 155 grains
• Limonite (FeO(OH)·nH₂O)5 samples, at most 315 grains
• Monazit ((Ce,La,Nd)PO₄)5 samples, at most 815 grains
• Anatas (TiO₂)3 samples, at most 5 grains
• Cinabarit (HgS)2 samples, at most 90 grains
• Chalcopyrite (CuFeS₂)2 samples, at most 5 grains
• Ilmenit (FeTiO₃)2 samples, at most 15 grains
• Arsenopyrite (FeAsS)1 sample, at most 5 grains

Rock-forming and accessory minerals

• Granáty ((Fe,Mg,Ca,Mn)₃Al₂Si₃O₁₂)6 samples, at most 55 grains
• Zirconium (ZrSiO₄)6 samples, at most 155 grains
• Epidot (Ca₂(Al,Fe)₃Si₃O₁₂(OH))5 samples, at most 315 grains
• Tourmalines (complex borosilicate)3 samples, at most 15 grains
• Staurolit (Fe₂Al₉Si₄O₂₃(OH))2 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

• Ca-Mg-HCO313×
• Ca-HCO310×
• Ca-Mg-SO4-HCO37×
• Ca-Mg-HCO3-SO43×
• Ca-Mg-SO42×
• Ca-SO4-HCO32×
• Ca-Cl-NO31×
• Mg-Ca-HCO31×

Water quality class according to the hydrogeochemical map

• class A13×
• class C5×
• class F4×
• class B4×
• class H4×
• class E4×
• class D3×
• class G3×

Metals in groundwater

• MercuryHgextreme (top 1 %)
  highest 1.00 μg/lmedian 0.100 μg/l19 samples63 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1992, 460 m from the water. Comparison: percentile 99 of all samples in Slovakia.

• AluminiumAlextreme (top 1 %)
  highest 0.210 mg/lmedian 0.00500 mg/l19 samples58 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1992, 1.5 km from the water. Comparison: percentile 99 of all samples in Slovakia.

• AntimonySbhigh (top 5 %)
  highest 3.30 μg/lmedian 0.200 μg/l19 samples37 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1992, 270 m from the water. Comparison: percentile 99 of all samples in Slovakia.

• ChromiumCrhigh (top 5 %)
  highest 4.70 μg/lmedian 0.250 μg/l19 samples58 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1992, 1.5 km from the water. Comparison: percentile 96 of all samples in Slovakia.

• LeadPbhigh (top 5 %)
  highest 3.00 μg/lmedian 0.500 μg/l19 samples58 % 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 95 of all samples in Slovakia.

• ArsenicAselevated (top 10 %)
  highest 3.20 μg/lmedian 0.500 μg/l19 samples95 % 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 93 of all samples in Slovakia.

• CopperCuelevated (top 10 %)
  highest 3.80 μg/lmedian 0.700 μg/l19 samples
  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 90 of all samples in Slovakia.

• ZincZnslightly elevated
  highest 375 μg/lmedian 2.00 μg/l19 samples42 % 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 86 of all samples in Slovakia.

• LithiumLitypical value
  highest 11.0 μg/lmedian 3.00 μg/l19 samples26 % 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 61 of all samples in Slovakia.

• IronFetypical value
  highest 0.00500 mg/lmedian 0.00500 mg/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: 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/l19 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 47 of all samples in Slovakia.

• SeleniumSebelow half of Slovakia
  highest 0.500 μg/lmedian 0.500 μg/l19 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 39 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)

• Fe44×
• Cu9×
• Ba1×

Types of mining objects

• adit31×
• spoil heap20×
• shaft3×
• 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.

98 boreholes in the 3 km zone, of which 9 hydrogeological and 89 other; with an archive report number 96.

Borehole depths

• up to 10 m25×
• 10–30 m10×
• 30–100 m4×
• 100–300 m10×
• over 300 m49×

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