Rybárstvo.sk

EN
Log in
Add a catch

Canal

Kanál Kátovské jazero

Danube basinCarp
fishing district
1
fishing district length
7.1km
region
Trnava Region
Aerial image of watercourse Kanál Kátovské jazero with the line highlighted
Blue line: course of the watercourse (approximate). Orthophoto mosaic of Slovakia © GKÚ Bratislava, CC BY 4.0Google Maps

By the water now

The Kanál Kátovské jazero watercourse at a glance

On the Kanál Kátovské jazero je jeden rybársky revír. stream Kanál Kátovské jazero is carp fishing district no. 2-0981-1-1. It lies in Skalica district (Trnava Region). According to the bed model, the surface at full level covers 0.3 ha and the greatest depth is 2.0 m. The district is managed by SRZ organization Holíč Fishing rules, permits, the map and conditions at the water are on the fishing district's page. It belongs to the Danube river basin.

Open fishing district Kanál Kátovské jazero

Game fish of the district (2):

Today on the Kanál Kátovské jazero watercourse

Is it worth going today? Fishing conditions score, the best window of the day and fishing districts from the best conditionsConditions score40 / 100Best window15:00

Average of the watercourse's fishing districts

Average activity · average of one fishing district

The number in the header is an estimate for the middle of the watercourse based on weather and measurements. The average of the fishing districts also counts satellite data, shading and geology of each district.

Best window today

15:00–17:00

Kanál Kátovské jazero, window score 43.

The score is an estimate of conditions based on weather, water and surroundings, not a bite forecast. Recalculated at 16:24.

Map and fishing districts of the Kanál Kátovské jazero watercourse

The course of the watercourse and its fishing districts. You can switch the line color to today's conditions, quality or any other parameter.Fishing districts1Length7,1 km

Detailed filtersregion, district, riverbed, depth, shading, satellites, water chemistry and pollution, fish, geology

1445fishing districts
Pick a category to narrow the selection. Next to each option you can see how many fishing districts remain.
Map color
Loading map…

Move the map with two fingers. In full-screen mode one finger is enough.

    Fish and catches on the Kanál Kátovské jazero watercourse

    Which fish live here and what has been caught? Game species recorded in the fishing districts and approved catches by anglers    Game species2

    Game species recorded in the fishing district

    Anglers' catches

    Nobody has added a catch from these fishing districts yet.

    Add a catch

    Organizations and districts on the Kanál Kátovské jazero watercourse

    Who manages the fishing districts and where they are    Organisations1Districts1

    Organizations on the watercoursewho manages the fishing districts and what the conditions are there today

    1. Holíč1 fishing district · 7.1 km40Kanál Kátovské jazero40

    Water pollution on the Kanál Kátovské jazero watercourse

    Water quality according to SHMÚ, wastewater treatment plants near the fishing districts and groundwater nearby    Districts failing a standard0 / 1

    Surface water near the fishing districtsnearest SHMÚ monitoring site, 2025

    0 of 1 fishing districts on the watercourse with SHMÚ data: the nearest site has an unmet standard in at least one indicator.

    • No unmet standard1

    Groundwater: measured valuestypical value from stations within 10 km, 2025

    1 of 1 fishing district with measurements has groundwater nearby with a value above the limit for at least one indicator.

    • ammonium or nitrites above the standard at at least one station1

    Water pollution in the Morava basinPolluted water in Slovakia

    Source: SHMÚ (yearbooks on surface and groundwater quality), the register of wastewater treatment plants from VÚVH and the EEA. A SHMÚ site is assigned to a fishing district by the same watercourse name and by distance; the yearbook lists the sites that failed the standard, so a missing site is not proof of clean water.

    Terrain and satellite images of the Kanál Kátovské jazero watercourse

    Elevation profile, 3D terrain of the surroundings and historical satellite images    Highest point166 m n. m.Lowest point163 m n. m.

    Elevation profile: lake

    Terrain height along the fishing district and the approximate water level.

    Lake This is a lake, so the watercourse is not assessed here: the water has no current, gradient or slope. The chart shows the terrain height along the fishing district.

    1621631641651661670 km2 km4 km6 km
    Terrain elevation profile (Lake): from 166 to 162 m a.s.l. over 7.1 km.
    Terrain height along the fishing district line, from the start (left) to the end
    Approximate water level
    164 m a.s.l.
    Lowest point of the profile
    163 m a.s.l.
    Highest point of the profile
    166 m a.s.l.

    Source: Open Topo Data (eudem25m), 4 Nov 2026. The height is approximate (error of a few metres).

    Terrain in 3D

    Loading the 3D terrain model…

    Historical images

    Changes in the surroundings and nature from 2017 to 2023: how the banks, vegetation and landscape around the water change. The images switch automatically; you can also browse them by hand.

    Aerial image of watercourse Kanál Kátovské jazero from 2017
    2017imaged 24 Aug 2017
    Aerial image of watercourse Kanál Kátovské jazero from 2020
    2020imaged 22 Aug 2020
    Aerial image of watercourse Kanál Kátovské jazero from 2023
    2023imaged 14 Aug 2023

    Orthophoto mosaic of Slovakia © GKÚ Bratislava, NLC Zvolen. The year and day of imaging depend on the location, so individual years may differ in season and weather.

    More watercourses near the Kanál Kátovské jazero watercourse

    The nearest rivers, streams and water bodies in the same river basin    Watercourses6

    Geology and geochemistry of the Kanál Kátovské jazero stream

    Geology at a glance and a map of the zone

    What lies beneath the water and around it? An overview in tiles, a map of mine workings, deposits, environmental burdens, boreholes and gold finds, and how to read the data

    The overview is based on public registers and atlases of the State Geological Institute of Dionýz Štúr. The search covers a zone around the water of all fishing districts of the stream (7 km of line in total): stream samples within 1 km, boreholes, mine workings and burdens within 3 km, ore occurrences within 5 km, geothermal sources within 10 km.

    Rock under the water

    River alluvium100% of the water line

    Gravelly and sandy bottom and floodplains; the water is replenished from groundwater in the alluvium. Geological Map of Slovakia 1:50,000.

    510

    Water according to the atlas

    pH 8.0modelled estimate

    water type Ca–HCO₃

    Mineralisation 639 mg/l, very hard water (21.2 °dH). Interpolation of measurements from the Geochemical Atlas of Slovakia, not a measurement in the stream.

    Elements in river sediment

    4 from 15elements in the top 10 %

    highest: Chromium 238 mg/kg

    Position of the highest-ranked element among the sample points on streams in Slovakia: percentile 95. Interpolation of the Geochemical Atlas of river sediments.

    1 km2 km35 °C65 °C

    Heat underfoot

    35°C at 1,000 m depth

    heat flow 50 mW/m²

    At a depth of 2,000 m about 65 °C (increase of 30 °C per kilometre). Atlas of Geothermal Energy of Slovakia.

    20200

    Natural gamma radiation

    49nGy/h dose rate

    percentile 36 in Slovakia

    Natural background from rocks and soil (potassium, uranium, thorium), not a value measured at the water. Airborne gamma-ray spectrometry by ŠGÚDŠ.

    Old mine workings

    0objects within 3 km

    No old mine working is recorded within 3 km of the water.

    Gold in river sediment

    0samples with gold

    No gold was found in river sediment samples within 1 km of the water. The samples do not cover every stream, so this does not mean there is no gold here.

    Trace elements in the stream water

    1 from 9indicators in the top 5 %

    highest: Copper 33.0 μg/l

    Position of the highest measured value in the distribution of all surface water samples in Slovakia: percentile 99 (Cca 750 m. odústia do Kopčianskeho kanála, CHKÚ pri obci Ká).

    Boreholes and groundwater analyses

    219boreholes within 3 km

    188 water analyses nearby

    Of these, 219 have an archive report from Geofond. The boreholes are hydrogeological, geological, engineering-geological and other.

    Geothermal energy

    –

    2 geothermal and mineral water springs within 10 km.

    Environmental burdens and landfills

    10sites within 3 km

    2 environmental burdens, 8 landfills

    Nearest burden: Skalica – areál bývalých ZVL, 950 m from the water. Proximity does not mean that substances leak from the site into the water.

    Deposits and ore occurrences

    2records within 5 km

    2 ore occurrences

    Geofond registers, the metallogenetic map and the mineral resources map.

    Landslides and slope deformations

    0areas within 3 km

    Documented landslides in the Geofond register. A landslide into a stream can cloud the water and change the bed.

    Map of the corridor

    Where the nearest mine workings, deposits, burdens, geothermal boreholes and gold finds are. Groups can be switched off.

    Skalica – areál bývalých ZVL – SK1000100P (950 m from the water)Holíč – olejové hospodárstvo kotolne – SK2000200P (2.3 km from the water)Skalica – permanent (40 m from the water)Kátov – permanent (60 m from the water)Skalica – occasional (150 m from the water)Skalica – occasional (730 m from the water)Skalica – occasional (1.4 km from the water)Skalica – Hliníky – Skalica – occasional (2.9 km from the water)TKO Cunín – Revajka – Holíč – none (2.9 km from the water)Holíč – Biela jama – Holíč – cannot be estimated (2.9 km from the water)a1 (5.1 km from the water)a1 (5.2 km from the water)Skalica – gravelly sands – sandstone, conglomerate (3.2 km from the water)Skalica – gravelly sands – sandstone (3.6 km from the water)Skalica – monitoring borehole (20 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (70 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (80 m from the water)Skalica – širokoprofilový vrt (Ø vŕtania nad 600 m (90 m from the water)Skalica – monitoring borehole (90 m from the water)Skalica – širokoprofilový vrt (Ø vŕtania nad 600 m (100 m from the water)Skalica – monitoring borehole (160 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (220 m from the water)Skalica – monitoring borehole (270 m from the water)Skalica – širokoprofilový vrt (Ø vŕtania nad 600 m (340 m from the water)Skalica – širokoprofilový vrt (Ø vŕtania nad 600 m (370 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (380 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (390 m from the water)Skalica – monitoring borehole (390 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (410 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (420 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (470 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (490 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (530 m from the water)Skalica – monitoring borehole (530 m from the water)Skalica – širokoprofilový vrt (Ø vŕtania nad 600 m (550 m from the water)Skalica – širokoprofilový vrt (Ø vŕtania nad 600 m (550 m from the water)Skalica – monitoring borehole (550 m from the water)Holíč – úzkoprofilový vrt s obyčajnou pitnou a ú (610 m from the water)Holíč – úzkoprofilový vrt s obyčajnou pitnou a ú (610 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (620 m from the water)Holíč – úzkoprofilový vrt s obyčajnou pitnou a ú (650 m from the water)Skalica – širokoprofilový vrt (Ø vŕtania nad 600 m (650 m from the water)Skalica – monitoring borehole (710 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (730 m from the water)Skalica – širokoprofilový vrt (Ø vŕtania nad 600 m (740 m from the water)Holíč – širokoprofilový vrt (Ø vŕtania nad 600 m (740 m from the water)Holíč – borehole with thermal water, minerálnou vodou (do 20 (750 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (760 m from the water)Skalica – monitoring borehole (760 m from the water)Skalica – monitoring borehole (770 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (770 m from the water)Skalica – monitoring borehole (770 m from the water)Skalica – monitoring borehole (790 m from the water)Skalica – úzkoprofilový vrt s obyčajnou pitnou a ú (810 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (70 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (80 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (220 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (340 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (380 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (390 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (420 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (470 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (490 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (590 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (610 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (610 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (620 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (650 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (730 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (740 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (760 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (770 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (770 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (810 m from the water)vrt s prelivom – Hydrogeological boreholes (840 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (850 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (900 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (960 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (970 m from the water)vrt s prelivom – Hydrogeological boreholes (980 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (980 m from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (1.0 km from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (1.0 km from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (1.0 km from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (1.1 km from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (1.2 km from the water)vrt s prelivom – Hydrogeological boreholes (1.3 km from the water)vrt s prelivom – Hydrogeological boreholes (1.3 km from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (1.3 km from the water)vrt s prelivom – Hydrogeological boreholes (1.3 km from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (1.3 km from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (1.4 km from the water)vrt s prelivom – Hydrogeological boreholes (1.4 km from the water)existujúci hydrogeologický vrt – Hydrogeological boreholes (1.4 km from the water)2 km

    The line is the water of the fishing district, the light band is the 3 km zone in which boreholes, mine workings and burdens were searched for. The map shows the nearest objects (at most a few dozen from each register), not all of them. The points correspond to the position in the register; area objects are marked by their centre.

    How to read these data

    • Zone and distance. The distance is measured from the line of the water to the point in the register (to the centre for areas), with an accuracy of tens of metres. Counts apply only to the zone, not to the whole catchment.
    • Percentile. For chemistry, the highest value is compared with all atlas samples in Slovakia. It is not a legal limit or a health risk assessment; the atlases are historical (published: surface waters 2015, groundwater 1996, river sediments 1999).
    • Limit of quantification. Many samples have a value at the lowest level the laboratory can determine; such results mean "below the limit". For these, the position in the distribution is an estimate.
    • Panning concentrates. Only samples with a find are recorded. The number of grains in a concentrate is not the gold content in grams per tonne.
    • Relation to water. A mine working, landfill or burden nearby proves nothing about the quality of the water in the stream. It serves as a prompt for attention and a starting point for further investigation.
    • Sample points. The area and raster maps of ŠGÚDŠ cannot be downloaded as points, so along the line of each fishing district the value is looked up at points roughly every 3 km. It is a sample of the line, not a continuous record; a very short section may have a single point.
    • Atlas rasters. The chemistry of water and sediments is an interpolation of measurements in a sampling network (Geochemical Atlas of Slovakia). The value at a point is a modelled estimate for the surroundings, not a measurement in the water. The percentile compares the average of this stream with all sample points on streams in Slovakia.
    • Positions and scales. The maps have different scales (1:50,000 to 1:1,000,000), so the level of detail differs between sections. A map outside its coverage means there is no area at that point, not that there is nothing there.

    Data: © ŠGÚDŠ (https://www.geology.sk), downloaded 8 Nov 2026. Details in the Methodology.

    Rocks, groundwater and landscape

    What does the water flow over? Geological structure and age of the rocks, groundwater aquifers, relief, climate, soils and geophysical fields

    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

    SystemAgeUnitPoints
    QuaternaryHolocenefluvial sediments: lithofacial undivided alluvial clays, or sandy to gravelly clays of valleys and floodplains3×

    Quaternary cover

    • fluvial sediments of floodplains100%SR 68 %

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

    • Typical thickness of the Quaternary cover7.5m
    • 5 – 10100%SR 20 %

    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

    Neotectonic units

    • positive unit (lowland hills)100%SR 14 %

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

    Direction of neotectonic movements

    • very small uplift67%SR 6.4 %
    • very large uplift33%SR 2.3 %

    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)

    • Vienna Basin100%SR 4.0 %

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

    Engineering-geological districts

    • region of lowland-stream deposits100%SR 20 %

    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 3 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

    • Zvodnence s prevažne medzizrnovým typom priepustnosti (prevažne nespevnené sedimenty) (Gravel; Fluviálne)100%SR 27 %

    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

    • Quaternary of the Morava up to Brodské100%SR 0.0 %

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

    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)148–209m a.s.l.
    • Average elevation of the units160m a.s.l.
    • Average slope0.3°
    • Average January temperature-2.5°C
    • Average July temperature20.0°C
    • Annual precipitation590mm

    Geomorphological units

    • Lower Morava Valley100%SR 0.0 %

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

    Geomorphological regions

    • South Moravian Basin100%SR 0.5 %

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

    Climatic-geographical types

    • lowland climate100%SR 38 %

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

    Susceptibility of soils to acidification

    • soils weakly susceptible to acidification100%SR 5.2 %

    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 A67%SR 45 %
    • relatively clean soil33%SR 53 %

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

    Lithogeochemical types

    • Neogene100%SR 48 %

    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.

    SVJZ

    Magnetic anomaly

    +81nT

    range 78 to 86 nT

    Deviation of the Earth's magnetic field from its surroundings. Positive and negative anomalies reveal rocks with magnetite (basalts, basic volcanic rocks) and boundaries in the bedrock.

    Bouguer gravity anomaly

    -46mGal

    residual −2.1 mGal

    Negative values lie over thick sediments and under mountains (light crust), positive over dense rocks and thinner crust. It shows the structure of the Earth's crust, not the water.

    Chemistry of water and river sediments

    What is in the water and on the bed? Trace elements and metals, nutrients, major ions, elements in sediments and groundwater

    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.

    510

    Water acidity

    pH 8.04typical range

    Most rivers and streams in Slovakia have a pH of 6.5 to 8.5. More acidic water is found in streams on acidic rocks (granites, quartzites), more alkaline water near limestones.

    Water hardness

    21.2°dH, very hard

    Sum of calcium and magnesium (3.78 mmol/l). Hard water is buffered and its pH changes more slowly; soft water is more sensitive to acid rain.

    Dissolved substances

    639mg/l mineralisation

    Total amount of dissolved minerals. Clean mountain water has tens of mg/l, lowland and limestone waters hundreds.

    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

    • CalciumCa109 mg/lpercentile 91
    • PotassiumK8.13 mg/lpercentile 89
    • SulphatesSO497.2 mg/lpercentile 88
    • SodiumNa25.6 mg/lpercentile 86
    • BicarbonatesHCO3331 mg/lpercentile 83
    • MagnesiumMg25.8 mg/lpercentile 79
    • ChloridesCl27.0 mg/lpercentile 77
    • FluoridesF0.142 mg/lpercentile 63

    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

    • AmmoniumNH40.579 mg/lpercentile 88
    • NitratesNO314.0 mg/lpercentile 84
    • PhosphatesPO40.514 mg/lpercentile 82
    • Chemical oxygen demandChSK4.83 mg/lpercentile 79

    Metals

    • ZincZn26.5 μg/lpercentile 91
    • ManganeseMn53.8 μg/lpercentile 64
    • AluminiumAl17.7 μg/lpercentile 16
    • IronFe0.0282 mg/lpercentile 9

    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.

    • CopperCuextreme (top 1 %)
      highest 33.0 μg/lmedian 26.0 μg/l2 samples

      Highest value: Cca 750 m. odústia do Kopčianskeho kanála, CHKÚ pri obci Ká2002, 850 m from the water. Comparison: percentile 99 of all samples in Slovakia.

    • BariumBaslightly elevated
      highest 93.0 μg/lmedian 72.5 μg/l2 samples

      Highest value: Kopčiansky kanál, cca 10 m od stavidla2002, 40 m from the water. Comparison: percentile 89 of all samples in Slovakia.

    • LeadPbslightly elevated
      highest 3.00 μg/lmedian 2.75 μg/l2 samples50 % below the limit of quantification

      Highest value: Cca 750 m. odústia do Kopčianskeho kanála, CHKÚ pri obci Ká2002, 850 m from the water. Comparison: percentile 87 of all samples in Slovakia.

    • ArsenicAstypical value
      highest 1.00 μg/lmedian 0.750 μg/l2 samples50 % below the limit of quantification

      Highest value: Kopčiansky kanál, cca 10 m od stavidla2002, 40 m from the water. Comparison: percentile 50 of all samples in Slovakia.

    • SeleniumSebelow half of Slovakia
      highest 0.500 μg/lmedian 0.500 μg/l2 samples100 % below the limit of quantification

      Highest value: Cca 750 m. odústia do Kopčianskeho kanála, CHKÚ pri obci Ká2002, 850 m from the water. Comparison: percentile 46 of all samples in Slovakia.

    • AntimonySbbelow half of Slovakia
      highest 0.500 μg/lmedian 0.500 μg/l2 samples100 % below the limit of quantification

      Highest value: Cca 750 m. odústia do Kopčianskeho kanála, CHKÚ pri obci Ká2002, 850 m from the water. Comparison: percentile 37 of all samples in Slovakia.

    • LithiumLibelow half of Slovakia
      highest 5.00 μg/lmedian 5.00 μg/l2 samples100 % below the limit of quantification

      Highest value: Cca 750 m. odústia do Kopčianskeho kanála, CHKÚ pri obci Ká2002, 850 m from the water. Comparison: percentile 34 of all samples in Slovakia.

    • ChromiumCrbelow half of Slovakia
      highest 1.00 μg/lmedian 1.00 μg/l2 samples100 % below the limit of quantification

      Highest value: Cca 750 m. odústia do Kopčianskeho kanála, CHKÚ pri obci Ká2002, 850 m from the water. Comparison: percentile 32 of all samples in Slovakia.

    • CadmiumCdbelow half of Slovakia
      highest 0.150 μg/lmedian 0.150 μg/l2 samples100 % below the limit of quantification

      Highest value: Cca 750 m. odústia do Kopčianskeho kanála, CHKÚ pri obci Ká, 850 m from the water. Comparison: percentile 26 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 10.7 mg/lmedian 8.23 mg/l2 samples

      Highest value: Kopčiansky kanál, cca 10 m od stavidla2002, 40 m from the water. Comparison: percentile 51 of all samples in Slovakia.

    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

    • ChromiumCr238 mg/kgpercentile 95
    • CopperCu114 mg/kgpercentile 95
    • ZincZn285 mg/kgpercentile 94
    • MolybdenumMo0.793 mg/kgpercentile 90
    • CadmiumCd0.538 mg/kgpercentile 87
    • MercuryHg0.368 mg/kgpercentile 86
    • LeadPb22.7 mg/kgpercentile 77
    • CobaltCo10.4 mg/kgpercentile 75
    • BismuthBi0.304 mg/kgpercentile 74
    • SeleniumSe0.359 mg/kgpercentile 72
    • NickelNi30.6 mg/kgpercentile 72
    • ArsenicAs6.97 mg/kgpercentile 54
    • AntimonySb0.583 mg/kgpercentile 45
    • TinSn2.49 mg/kgpercentile 43
    • VanadiumV65.1 mg/kgpercentile 43

    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)

    Major elements (iron, aluminium, calcium, magnesium, potassium, sodium, titanium, manganese, phosphorus)
    • PhosphorusP1,367 mg/kgpercentile 90
    • CalciumCa3.26 %percentile 68
    • PotassiumK1.61 %percentile 65
    • IronFe2.75 %percentile 53
    • ManganeseMn832 mg/kgpercentile 49
    • AluminiumAl5.30 %percentile 38
    • TitaniumTi4,022 mg/kgpercentile 32
    • MagnesiumMg0.734 %percentile 30
    • SodiumNa0.674 %percentile 15
    Further elements (barium, strontium, lithium, rubidium, zirconium, yttrium, cerium, boron, beryllium, gallium)
    • GalliumGa19.3 mg/kgpercentile 88
    • BariumBa521 mg/kgpercentile 75
    • RubidiumRb97.6 mg/kgpercentile 72
    • StrontiumSr160 mg/kgpercentile 69
    • LithiumLi30.5 mg/kgpercentile 56
    • BoronB57.8 mg/kgpercentile 41
    • ZirconiumZr365 mg/kgpercentile 37
    • CeriumCe55.1 mg/kgpercentile 35
    • BerylliumBe1.06 mg/kgpercentile 30
    • YttriumY23.6 mg/kgpercentile 28

    Groundwater: chemistry and water types

    Hydrogeochemical objects (analyses of springs and boreholes) and the geochemical atlas of groundwater (1996). Groundwater feeds streams, so its composition also affects the water in the stream.

    Metals in groundwater

    • CopperCuextreme (top 1 %)
      highest 91.0 μg/lmedian 3.90 μg/l15 samples

      Highest value: studňa1993, 920 m from the water. Comparison: percentile 99 of all samples in Slovakia.

    • SeleniumSeextreme (top 1 %)
      highest 8.50 μg/lmedian 0.500 μg/l15 samples53 % below the limit of quantification

      Highest value: studňa1993, 1.6 km from the water. Comparison: percentile 99 of all samples in Slovakia.

    • LithiumLihigh (top 5 %)
      highest 111 μg/lmedian 44.0 μg/l15 samples

      Highest value: studňa1993, 1.7 km from the water. Comparison: percentile 98 of all samples in Slovakia.

    • ArsenicAshigh (top 5 %)
      highest 8.20 μg/lmedian 0.500 μg/l15 samples73 % below the limit of quantification

      Highest value: studňa1993, 1.7 km from the water. Comparison: percentile 97 of all samples in Slovakia.

    • MercuryHghigh (top 5 %)
      highest 0.300 μg/lmedian 0.100 μg/l15 samples80 % below the limit of quantification

      Highest value: studňa1993, 120 m from the water. Comparison: percentile 96 of all samples in Slovakia.

    • AntimonySbhigh (top 5 %)
      highest 1.50 μg/lmedian 0.100 μg/l15 samples60 % below the limit of quantification

      Highest value: vrt1994, 2.6 km from the water. Comparison: percentile 96 of all samples in Slovakia.

    • CadmiumCdhigh (top 5 %)
      highest 0.500 μg/lmedian 0.250 μg/l15 samples93 % below the limit of quantification

      Highest value: studňa1993, 1.3 km from the water. Comparison: percentile 95 of all samples in Slovakia.

    • LeadPbhigh (top 5 %)
      highest 3.00 μg/lmedian 1.00 μg/l15 samples13 % below the limit of quantification

      Highest value: studňa1993, 1.7 km from the water. Comparison: percentile 95 of all samples in Slovakia.

    • ZincZnelevated (top 10 %)
      highest 988 μg/lmedian 59.0 μg/l15 samples

      Highest value: studňa1993, 1.3 km from the water. Comparison: percentile 95 of all samples in Slovakia.

    • ChromiumCrelevated (top 10 %)
      highest 3.10 μg/lmedian 0.500 μg/l15 samples47 % below the limit of quantification

      Highest value: studňa1993, 1.6 km from the water. Comparison: percentile 93 of all samples in Slovakia.

    • IronFetypical value
      highest 0.00500 mg/lmedian 0.00500 mg/l11 samples100 % below the limit of quantification

      Highest value: studňa1993, 2.0 km from the water. Comparison: percentile 50 of all samples in Slovakia.

    • AluminiumAlbelow half of Slovakia
      highest 0.00500 mg/lmedian 0.00500 mg/l15 samples100 % below the limit of quantification

      Highest value: studňa1993, 2.0 km from the water. Comparison: percentile 30 of all samples in Slovakia.

    Geothermal energy, mineral waters and boreholes

    Is there heat underground? Geothermal potential, geothermal boreholes by temperature, mineral springs and the borehole archive    Boreholes219

    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.

    1 km2 km35 °C65 °C

    Rock temperature with depth

    35 / 65 °Cat depths of 1,000 and 2,000 m

    increase of 30 °C per km

    The line shows the rock temperature; the dotted part is only an extension to the surface. Heat flow 50 mW/m².

    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

    1. category a1Typemineral waterWater temperature (°C)< 15Yield (l/s)< 5Count2
      5.1 km

    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.

    219 boreholes in the 3 km zone, of which 124 hydrogeological and 95 other; with an archive report number 219.

    Borehole depths

    • up to 10 m86×
    • 10–30 m88×
    • 30–100 m31×
    • 100–300 m5×
    • over 300 m1×

    Nearest boreholes

    1. SkalicaTypemonitoring boreholeDepth10.5 mArchive report89359 119Ad67.pdf
      20 m
    2. VN82-4TypeenvironmentArchive report96444
      30 m
    3. SkalicaTypenarrow-diameter borehole with ordinary drinking and process waterDepth10.0 mArchive report16490 119Ad6.pdf
      70 m
    4. HV-5TypehydrogeologicalDepth10.0 mArchive report16490
      70 m
    5. SkalicaTypenarrow-diameter borehole with ordinary drinking and process waterDepth11.5 mArchive report16490 119Ad14.pdf
      80 m
    6. JV-16Typeengineering-geologicalDepth13.0 mArchive report84570
      80 m
    7. SkalicaTypewide-diameter boreholeDepth10.5 mArchive report89359 119Ad65.pdf
      90 m
    8. SkalicaTypemonitoring boreholeDepth9.8 mArchive report89359 119Ad68.pdf
      90 m
    9. SkalicaTypewide-diameter boreholeDepth11.0 mArchive report89359 119Ad64.pdf
      100 m
    10. HV-10TypehydrogeologicalDepth11.5 mArchive report16490
      110 m
    11. SkalicaTypemonitoring boreholeDepth9.5 mArchive report89359 119Ad70.pdf
      160 m
    12. HV-4TypehydrogeologicalDepth10.0 mArchive report16490
      190 m

    Natural radioactivity and radon

    How much does the ground radiate here? Gamma radiation of rocks, radon in soil and radon in waters

    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.

    20200

    Gamma radiation dose rate

    49nGy/h in air

    range 47 to 53 nGy/h

    Natural background from rocks and soil; higher over granites and some acidic volcanic rocks, lower over limestones and floodplains.

    Radon risk of the bedrock

    low

    Radon is a natural gas from rocks. The risk concerns buildings and cellars, not the water in the stream; it shows what the bedrock is like.

    • Equivalent thorium (eTh)eTh7.50 ppm56th percentile
    • Potassium (K)K1.27 %percentile 37
    • Equivalent uranium (eU)eU2.31 ppm21th 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 137CsCS1371,105 Bq/m²percentile 24

    Radon risk by isopleths

    • low67%SR 36 %
    • medium33%SR 64 %

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

    Radon in waters

    Radiohydrochemical sampling of springs, wells and watercourses: radon activity concentration in water. The bar shows the highest measured value for each kind of site.

    • well13.2 Bq/l · median 7.72 Bq/l · 4 samples
    • stream, river1.22 Bq/l · median 1.22 Bq/l · 1 sample

    Environmental burdens, landfills and landslides

    What in the surroundings can harm the water? Environmental burdens, waste landfills, anthropogenic sediments and slope deformations    Burdens and landfills10

    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

    1. Skalica – areál bývalých ZVLActivitySK1000100P
      950 m
    2. Holíč – olejové hospodárstvo kotolneActivitySK2000200P
      2.3 km

    Waste landfills

    1. SkalicaArea4 800 m²Year established1972Monitoring–
      40 m
    2. KátovArea2 400 m²Year established1975Monitoring–
      60 m
    3. SkalicaArea55 000 m²Year established1976Monitoring–
      150 m
    4. SkalicaArea15 000 m²Year established1960Monitoring–
      730 m
    5. SkalicaArea60 000 m²Year established1960Monitoring–
      1.4 km
    6. Skalica – Hliníky – SkalicaArea9 600 m²Year established1970Monitoring–
      2.9 km
    7. TKO Cunín – Revajka – HolíčArea14 000 m²Year established1994Monitoringmonitored
      2.9 km
    8. Holíč – Biela jama – HolíčArea20 000 m²Year established1970Monitoringmonitored
      2.9 km