Krivoklátsky 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

• proluvial sediments of floodplain cones50%SR 0.3 %
• deluvial sediments50%SR 16 %

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

• Typical thickness of the Quaternary cover2.3m

• 2 – 550%SR 48 %
• 0 – 250%SR 16 %

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

Tectonic division

• NEOALPÍNSKE TEKTONICKÉ ŠTRUKTÚRY ZÁPADNÝCH KARPÁT100%SR 84 %

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

Regional geological division

• intramontane basins100%SR 44 %

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

Regional geological division (subunits)

• inner basins100%SR 4.5 %

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

Engineering-geological districts

• region of lowland-stream deposits50%SR 20 %
• region of proluvial cones and mantles50%SR 2.7 %

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

Engineering-geological formations

• formation of Quaternary sediments100%SR 71 %

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 3 of 4 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)

• Gravel50%SR 52 %
• Limestones50%SR 3.1 %

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

Aquifer type

• Zvodnence s prevažne medzizrnovým typom priepustnosti (prevažne nespevnené sedimenty) (Gravel; Fluviálne)50%SR 27 %
• Menšie zvodnence s medzizrnovým alebo puklinovým typom priepustnosti alebo oblasti s takmer žiadnymi množstvami podzemnej vody (Limestones)50%SR 1.9 %

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

Main hydrogeological region

• Quaternary and Neogene Ilava Basin50%SR 0.0 %
• Paleogene and Mesozoic of the Bradl zone of Javorník and the northeastern part of the White Carpathians50%SR 1.8 %

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–HCO₃

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

Major ions

• CalciumCa82.8 mg/lpercentile 72
• BicarbonatesHCO3266 mg/lpercentile 68
• SulphatesSO440.7 mg/lpercentile 50
• PotassiumK2.84 mg/lpercentile 47
• MagnesiumMg13.8 mg/lpercentile 45
• ChloridesCl6.25 mg/lpercentile 41
• SodiumNa5.86 mg/lpercentile 33
• FluoridesF0.0801 mg/lpercentile 30

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

• AmmoniumNH40.235 mg/lpercentile 72
• PhosphatesPO40.106 mg/lpercentile 44
• Chemical oxygen demandChSK2.81 mg/lpercentile 41
• NitratesNO34.37 mg/lpercentile 31

Metals

• AluminiumAl180 μg/lpercentile 76
• ZincZn12.2 μg/lpercentile 72
• ManganeseMn9.35 μg/lpercentile 19
• IronFe0.0238 mg/lpercentile 5

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

• SeleniumSe0.430 mg/kgpercentile 81
• CadmiumCd0.361 mg/kgpercentile 77
• NickelNi30.2 mg/kgpercentile 71
• LeadPb18.2 mg/kgpercentile 63
• CobaltCo9.09 mg/kgpercentile 60
• ZincZn105 mg/kgpercentile 58
• CopperCu25.1 mg/kgpercentile 56
• ChromiumCr76.0 mg/kgpercentile 56
• ArsenicAs6.23 mg/kgpercentile 45
• TinSn2.44 mg/kgpercentile 41
• MercuryHg0.0782 mg/kgpercentile 35
• BismuthBi0.154 mg/kgpercentile 24
• VanadiumV57.1 mg/kgpercentile 22
• AntimonySb0.298 mg/kgpercentile 10
• MolybdenumMo0.136 mg/kgpercentile 7

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)K1.31 %percentile 53
• Equivalent thorium (eTh)eTh6.99 ppm34th percentile
• Equivalent uranium (eU)eU2.05 ppm9th 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 137CsCS1371,121 Bq/m²percentile 25

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.

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)203–911m a.s.l.
• Average elevation of the units356m a.s.l.
• Average slope6.2°
• Average January temperature-3.0°C
• Average July temperature19.3°C
• Annual precipitation650mm

Geomorphological units

• Považie Valley67%SR 1.5 %
• Biele Karpaty33%SR 1.4 %

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

Geomorphological regions

• Slovak-Moravian Carpathians100%SR 5.4 %

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 not susceptible to acidification67%SR 27 %
• soils moderately susceptible to acidification33%SR 25 %

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

Soil contamination (map 1:500,000)

• uncontaminated soil, the geogenically determined content of some risk elements reaches limit values A75%SR 45 %
• relatively clean soil25%SR 53 %

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

Lithogeochemical types

• Clayey-sandy sediments of the Cretaceous and Paleogene of the Klippen Belt, Tatricum and Hronicum67%SR 2.9 %
• Neogene33%SR 48 %

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.

• BariumBahigh (top 5 %)
  highest 200 μg/lmedian 121 μg/l6 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: 800 m J od K444 Babiná1995, 90 m from the water. Comparison: percentile 97 of all samples in Slovakia.

• AntimonySbhigh (top 5 %)
  highest 6.12 μg/lmedian 0.740 μg/l6 samples50 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Prejta,derivačný kanál Váhu pri moste1995, 760 m from the water. Comparison: percentile 95 of all samples in Slovakia.

• ArsenicAshigh (top 5 %)
  highest 6.44 μg/lmedian 2.70 μg/l6 samples33 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Prejta,derivačný kanál Váhu pri moste1995, 760 m from the water. Comparison: percentile 95 of all samples in Slovakia.

• LeadPbhigh (top 5 %)
  highest 5.00 μg/lmedian 2.75 μg/l6 samples50 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Bohunice v obci, 1600 m SSV od K2391995, 80 m from the water. Comparison: percentile 95 of all samples in Slovakia.

• CadmiumCdelevated (top 10 %)
  highest 0.500 μg/lmedian 0.150 μg/l6 samples83 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Prejta, 900 m SZ od K248, 920 m from the water. Comparison: percentile 92 of all samples in Slovakia.

• ChromiumCrelevated (top 10 %)
  highest 5.00 μg/lmedian 1.00 μg/l6 samples67 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Prejta, 900 m SZ od K2481995, 920 m from the water. Comparison: percentile 92 of all samples in Slovakia.

• StrontiumSrslightly elevated
  highest 360 μg/lmedian 325 μg/l6 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Prejta, 900 m SZ od K2481995, 920 m from the water. Comparison: percentile 79 of all samples in Slovakia.

• CopperCuslightly elevated
  highest 2.50 μg/lmedian 1.60 μg/l6 samples17 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Sedmerovce – Pominovec, 1400m JJZ od k2381995, 60 m from the water. Comparison: percentile 76 of all samples in Slovakia.

• SeleniumSebelow half of Slovakia
  highest 0.500 μg/lmedian 0.500 μg/l6 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Prejta,derivačný kanál Váhu pri moste1995, 760 m from the water. Comparison: percentile 46 of all samples in Slovakia.

• LithiumLibelow half of Slovakia
  highest 5.00 μg/lmedian 5.00 μg/l6 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Prejta,derivačný kanál Váhu pri moste1995, 760 m from the water. Comparison: percentile 34 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 6.02 mg/lmedian 2.92 mg/l6 samples17 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: Sedmerovce – Pominovec, 1400m JJZ od k2381995, 60 m from the water. Comparison: percentile 20 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.

• Anatas (TiO₂)14 samples, at most 315 grains
• Limonite (FeO(OH)·nH₂O)14 samples, at most 1115 grains
• Magnetite (Fe₃O₄)14 samples, at most 1815 grains
• Rutil (TiO₂)14 samples, at most 815 grains
• Barite (BaSO₄)13 samples, at most 815 grains
• Hematite (Fe₂O₃)13 samples, at most 815 grains
• Ilmenit (FeTiO₃)13 samples, at most 1815 grains
• Pyrite (FeS₂)12 samples, at most 315 grains
• Monazit ((Ce,La,Nd)PO₄)6 samples, at most 5 grains
• Scheelit (CaWO₄)1 sample, at most 7 grains
• Gold (Au)1 sample, at most 4 grains
• Kasiterit (SnO₂)1 sample, at most 4 grains

Nearest samples with gold

Rock-forming and accessory minerals

• Epidot (Ca₂(Al,Fe)₃Si₃O₁₂(OH))14 samples, at most 315 grains
• Granáty ((Fe,Mg,Ca,Mn)₃Al₂Si₃O₁₂)14 samples, at most 1815 grains
• Spinel (Cr-spinel) ((Mg,Fe)(Al,Cr)₂O₄)14 samples, at most 315 grains
• Zirconium (ZrSiO₄)14 samples, at most 815 grains
• Amfiboly (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂)13 samples, at most 55 grains
• Apatit (Ca₅(PO₄)₃(F,Cl,OH))13 samples, at most 55 grains
• Pyroxény ((Mg,Fe,Ca)₂Si₂O₆)13 samples, at most 1115 grains
• Staurolit (Fe₂Al₉Si₄O₂₃(OH))12 samples, at most 55 grains
• Tourmalines (complex borosilicate)11 samples, at most 55 grains
• Sillimanit (Al₂SiO₅)7 samples, at most 5 grains
• Kyanit (Al₂SiO₅)6 samples, at most 5 grains
• Korund (Al₂O₃)4 samples, at most 5 grains
• Titanit (CaTiSiO₅)2 samples, at most 194 grains
• Andaluzit (Al₂SiO₅)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 19.2 μg/lmedian 0.600 μg/l25 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1993, 1.1 km from the water. Comparison: percentile 99 of all samples in Slovakia.

• ZincZnhigh (top 5 %)
  highest 2,625 μg/lmedian 24.0 μg/l25 samples8 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1993, 1.4 km from the water. Comparison: percentile 97 of all samples in Slovakia.

• AntimonySbhigh (top 5 %)
  highest 1.00 μg/lmedian 0.100 μg/l25 samples92 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: vrt1993, 2.0 km from the water. Comparison: percentile 95 of all samples in Slovakia.

• LithiumLihigh (top 5 %)
  highest 59.0 μg/lmedian 9.00 μg/l25 samples
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1993, 90 m from the water. Comparison: percentile 95 of all samples in Slovakia.

• CadmiumCdhigh (top 5 %)
  highest 0.500 μg/lmedian 0.250 μg/l25 samples92 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1993, 2.3 km from the water. Comparison: percentile 95 of all samples in Slovakia.

• LeadPbelevated (top 10 %)
  highest 2.00 μg/lmedian 1.00 μg/l25 samples40 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1993, 1.5 km from the water. Comparison: percentile 90 of all samples in Slovakia.

• ArsenicAsslightly elevated
  highest 1.20 μg/lmedian 0.500 μg/l25 samples92 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: prameň1993, 710 m from the water. Comparison: percentile 82 of all samples in Slovakia.

• AluminiumAlslightly elevated
  highest 0.0200 mg/lmedian 0.00500 mg/l25 samples76 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: vrt1993, 2.1 km from the water. Comparison: percentile 80 of all samples in Slovakia.

• ChromiumCrslightly elevated
  highest 0.900 μg/lmedian 0.250 μg/l25 samples72 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1993, 1.4 km from the water. Comparison: percentile 76 of all samples in Slovakia.

• IronFetypical value
  highest 0.00500 mg/lmedian 0.00500 mg/l13 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1993, 1.7 km from the water. Comparison: percentile 50 of all samples in Slovakia.

• MercuryHgbelow half of Slovakia
  highest 0.100 μg/lmedian 0.100 μg/l25 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1993, 1.7 km from the water. Comparison: percentile 46 of all samples in Slovakia.

• SeleniumSebelow half of Slovakia
  highest 0.500 μg/lmedian 0.500 μg/l25 samples100 % below the limit of quantification
  1. up to 50 %
  2. 50–75
  3. 75–90
  4. 90–99
  5. above 99

  Highest value: studňa1993, 1.7 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.

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.

293 boreholes in the 3 km zone, of which 85 hydrogeological and 208 other; with an archive report number 293.

Borehole depths

• up to 10 m126×
• 10–30 m142×
• 30–100 m16×
• 100–300 m2×
• 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

• Landslides49×
• Block fields5×

Degree of activity

• Stabilizovaný25×
• Potenciálny25×
• Aktívny4×

Current state

• SD taken from archival materials, ktorá bola konfrontova23×
• Processed only in the scope of registration on a scale of 1:25,00010×
• SD zaregistrovaná v rámci terénneho výskumu na úlohe Atlas S2×
• SD prebraná z archívnych materiálov (existuje inž. geologick1×