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Reservoir

VN Lozorno

Danube basinCarpSalmonid (trout)
fishing districts
2
fishing district length
1.1km
region
Bratislava Region
  • Carp900 m1 fishing district
  • Salmonid (trout)154 m1 fishing district
Aerial image of watercourse VN Lozorno 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 VN Lozorno water body and its fishing districts at a glance

VN Lozorno is divided into 2 fishing districts. Together they measure 1.1 km. 1 are carp waters and 1 salmonid trout waters. All lie in Malacky district (Bratislava Region). All are managed by City SRZ organization Záhorie The longest is fishing district VN Lozorno č. 2 (900 m). It belongs to the Danube river basin.

Game fish in these fishing districts (2):

Today on the VN Lozorno water body

Is it worth going today? Fishing conditions score, the best window of the day and fishing districts from the best conditionsConditions score49 / 100Best window06:00

Average of the water body's fishing districts

Average activity · average of 2 fishing districts

The number in the header is an estimate for the middle of the water body based on weather and measurements. The average of the fishing districts also counts satellite data, shading and geology of each district.
  • Very high0
  • High1
  • Average0
  • Low1

Best window today

06:00–08:00

VN Lozorno č. 1, window score 70.

The score is an estimate of conditions based on weather, water and surroundings, not a bite forecast. Recalculated at 22:04.

Map and fishing districts of the VN Lozorno water body

The water body and its fishing districts. You can switch the map color to today's conditions, quality or any other parameter.Fishing districts2Length1,1 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.
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Move the map with two fingers. In full-screen mode one finger is enough.

    Fish and catches on the VN Lozorno water body

    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 districts

    The number next to a species is the number of fishing districts where it is recorded by a catch, a stocking plan or an observation at the water.

    Anglers' catches

    Nobody has added a catch from these fishing districts yet.

    Add a catch

    Organizations and districts on the VN Lozorno water body

    Who manages the fishing districts and where they are    Organizations1Districts1

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

    1. Záhorie2 fishing districts · 1.1 km49VN Lozorno č. 164

    Water pollution on the VN Lozorno water body

    Water quality according to SHMÚ, wastewater treatment plants near the fishing districts and groundwater nearby    Districts failing a standard0 / 2

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

    0 of 2 fishing districts with measurements have groundwater nearby with a value above the limit for at least one indicator.

    Polluted 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 VN Lozorno water body

    Elevation profile, 3D terrain of the surroundings and historical satellite images    Highest point319 m n. m.Lowest point212 m n. m.

    Elevation profile: reservoir

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

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

    2002503003500.0 km0.2 km0.4 km0.6 km0.8 kmNo. 1No. 2
    Terrain elevation profile (Reservoir): from 319 to 212 m a.s.l. over 0.9 km.
    Terrain height along the fishing district line, from the start (left) to the end
    Approximate water level
    265 m a.s.l.
    Lowest point of the profile
    212 m a.s.l.
    Highest point of the profile
    319 m a.s.l.

    Source: Open Topo Data (eudem25m), 9 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 VN Lozorno from 2017
    2017imaged 3 Aug 2017
    Aerial image of watercourse VN Lozorno from 2020
    2020imaged 21 Aug 2020
    Aerial image of watercourse VN Lozorno from 2023
    2023imaged 28 May 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 waters near the VN Lozorno water body

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

    Geology and geochemistry of the VN Lozorno water body

    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 (1 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 7.9modelled estimate

    water type Ca–HCO₃

    Mineralisation 396 mg/l, hard water (15.3 °dH). Interpolation of measurements from the Geochemical Atlas of Slovakia, not a measurement in the stream.

    Elements in river sediment

    0 from 15elements in the top 10 %

    highest: Antimony 0.877 mg/kg

    Position of the highest-ranked element among the sample points on streams in Slovakia: percentile 66. Interpolation of the Geochemical Atlas of river sediments.

    1 km2 km45 °C80 °C

    Heat underfoot

    45°C at 1,000 m depth

    heat flow 65 mW/m²

    At a depth of 2,000 m about 80 °C (increase of 35 °C per kilometre). Atlas of Geothermal Energy of Slovakia.

    20200

    Natural gamma radiation

    46nGy/h dose rate

    percentile 18 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

    37objects within 3 km

    mined: Mn

    Nearest: Halda pri štôlni Lipníky (spoil heap), 830 m from the water.

    Gold in river sediment

    0samples with gold

    13 ore minerals in the sediment

    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

    2 from 9indicators in the top 5 %

    highest: Lead 5.60 μg/l

    Position of the highest measured value in the distribution of all surface water samples in Slovakia: percentile 95 (Suchý potok).

    Boreholes and groundwater analyses

    58boreholes within 3 km

    203 water analyses nearby

    Of these, 58 have an archive report from Geofond. The boreholes are hydrogeological, geological, engineering-geological and other.

    Geothermal energy

    –

    No geothermal borehole or spring is recorded within 10 km.

    Environmental burdens and landfills

    2sites within 3 km

    1 environmental burden, 1 landfill

    Nearest burden: MA (011) / Lozorno – stará pieskovňa za štrekou – skládka odpadov, 1.7 km from the water. Proximity does not mean that substances leak from the site into the water.

    Deposits and ore occurrences

    8records within 5 km

    3 deposits, 5 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.

    Halda pri štôlni Lipníky – 5 – spoil heap (830 m from the water)Štôlňa Lipníky – 2 – adit (860 m from the water)Pingy – 4 – pinge (mining subsidence pit), line of pinge pits (1.3 km from the water)Halda pri štôlni Skala – 5 – spoil heap (1.7 km from the water)Štôlňa Skala – 2 – adit (1.7 km from the water)3. pinga – 4 – pinge (mining subsidence pit), line of pinge pits (2.0 km from the water)Štôlňa B – 2 – adit (2.0 km from the water)Halda pri štôlni B – 5 – spoil heap (2.0 km from the water)Halda pri štôlni Š – 5 – spoil heap (2.1 km from the water)4.pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (2.1 km from the water)Štôlňa Š – 2 – adit (2.1 km from the water)Halda pri Hornej Ľudovít štôlni – 5 – spoil heap (2.1 km from the water)Horná Ľudovít štôlňa – 2 – adit (2.1 km from the water)2.pinga – 4 – pinge (mining subsidence pit), line of pinge pits (2.2 km from the water)3.pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (2.2 km from the water)2.povrchové dobývky – 6 – other type of object (2.2 km from the water)Haldy pri 2.povrch.dobývkach – 5 – spoil heap (2.2 km from the water)1.komín z Hornej Ľudovít štôlne – 1 – shaft (2.2 km from the water)2.komín z Hornej Ľudovít štôlne – 1 – shaft (2.2 km from the water)1. pinga – 4 – pinge (mining subsidence pit), line of pinge pits (2.3 km from the water)Spodná Ľudovít štôlňa – 2 – adit (2.5 km from the water)1.pingové pole – 4 – pinge (mining subsidence pit), line of pinge pits (2.5 km from the water)3.bezmenná štôlňa – 2 – adit (2.5 km from the water)Halda pri Spodnej Ľudovít štôlni – 5 – spoil heap (2.5 km from the water)2.bezmenná štôlňa – 2 – adit (2.5 km from the water)1.bezmenná štôlňa – 2 – adit (2.5 km from the water)Halda 3. bezmennej št. – 5 – spoil heap (2.5 km from the water)1.povrch.dobývky(Sp.Ľudivít št.) – 6 – other type of object (2.5 km from the water)Halda 1.bezmennej št. – 5 – spoil heap (2.5 km from the water)3. Povrchová dobývka – 6 – other type of object (2.5 km from the water)Halda pod 1.povrch. dobývkami – 5 – spoil heap (2.5 km from the water)Halda 2. bezmennej št. – 5 – spoil heap (2.5 km from the water)Prepadliny štôlne Skala – 6 – other type of object (1.7 km from the water)Horná Ľudovít štôlňa – 2 – adit (2.2 km from the water)2. Povrchové dobývky – 6 – other type of object (2.2 km from the water)2. Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (2.3 km from the water)1. Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (2.6 km from the water)Červený domček – Manganese ores (1.3 km from the water)MA (011) / Lozorno – stará pieskovňa za štrekou – landfill komunálneho odpadu – zariadenia (1.7 km from the water)PD Lozorno – Lozorno – cannot be estimated (130 m from the water)Bažantnica I – foundry sands (3.4 km from the water)Bažantnica I – foundry sands (3.4 km from the water)Turecký vrch – building stone (3.5 km from the water)Lozorno – gravelly sands (1.9 km from the water)Borinka, Stupava, Lozorno – Mn ores (2.5 km from the water)Lozorno – Pusté – Pod cisárskym borníkom – stavebný piesok – sand (3.5 km from the water)Jablonové – Turecký vrch – antimony ores (4.8 km from the water)Prepadlé – hydrogeology (3.9 km from the water)Limbašská vyvieračka – hydrogeology (4.8 km from the water)Borinka, Medené Hámre – general geology (4.9 km from the water)Lozorno – úzkoprofilový vrt s obyčajnou pitnou a ú (370 m from the water)Lozorno – úzkoprofilový vrt s obyčajnou pitnou a ú (1.1 km from the water)Lozorno – úzkoprofilový vrt s obyčajnou pitnou a ú (1.3 km from the water)Lozorno – úzkoprofilový vrt s obyčajnou pitnou a ú (1.3 km from the water)Lozorno – úzkoprofilový vrt s obyčajnou pitnou a ú (1.4 km from the water)Lozorno – úzkoprofilový vrt s obyčajnou pitnou a ú (1.7 km from the water)Lozorno – úzkoprofilový vrt s obyčajnou pitnou a ú (1.7 km from the water)Lozorno – širokoprofilový vrt (Ø vŕtania nad 600 m (1.8 km from the water)Lozorno – SHMÚ observation borehole (1.9 km from the water)JRD Lozorno – úzkoprofilový vrt s obyčajnou pitnou a ú (2.5 km from the water)JRD Lozorno – úzkoprofilový vrt s obyčajnou pitnou a ú (2.6 km from the water)Lozorno – úzkoprofilový vrt s obyčajnou pitnou a ú (2.6 km from the water)Lozorno – úzkoprofilový vrt s obyčajnou pitnou a ú (2.6 km from the water)Stupava – úzkoprofilový vrt s obyčajnou pitnou a ú (2.7 km from the water)prameň s monitorovaním výdatnosti – Groundwater springs (410 m from the water)prameň s monitorovaním výdatnosti – Groundwater springs (620 m from the water)prameň s monitorovaním výdatnosti – Groundwater springs (680 m from the water)prameň – Groundwater springs (820 m from the water)prameň – Groundwater springs (930 m from the water)prameň – Groundwater springs (930 m from the water)prameň – Groundwater springs (960 m from the water)prameň s monitorovaním výdatnosti – Groundwater springs (1.1 km from the water)prameň – Groundwater springs (1.6 km from the water)prameň – Groundwater springs (2.0 km from the water)prameň s monitorovaním výdatnosti – Groundwater springs (2.1 km from the water)prameň s monitorovaním výdatnosti – Groundwater springs (2.1 km from the water)prameň s monitorovaním výdatnosti – Groundwater springs (2.1 km from the water)prameň s monitorovaním výdatnosti – Groundwater springs (2.1 km from the water)prameň – Groundwater springs (2.2 km from the water)prameň s monitorovaním výdatnosti – Groundwater springs (2.2 km from the water)prameň – Groundwater springs (2.3 km from the water)prameň s monitorovaním výdatnosti – Groundwater springs (2.4 km from the water)prameň – Groundwater springs (2.4 km from the water)prameň s monitorovaním výdatnosti – Groundwater springs (2.4 km from the water)prameň – Groundwater springs (2.5 km from the water)prameň – Groundwater springs (2.5 km from the water)prameň – Groundwater springs (2.5 km from the water)prameň – Groundwater springs (2.5 km from the water)prameň – Groundwater springs (2.5 km from the water)prameň – Groundwater springs (2.6 km from the water)prameň – Groundwater springs (2.6 km from the water)prameň – Groundwater springs (2.6 km from the water)prameň – Groundwater springs (2.6 km from the water)prameň – Groundwater springs (2.8 km from the water)prameň – Groundwater springs (2.8 km from the water)prameň s monitorovaním výdatnosti – Groundwater springs (2.9 km from the water)prameň – Groundwater springs (2.9 km from the water)prameň – Groundwater springs (2.9 km from the water)prameň – Groundwater springs (2.9 km from the water)prameň – Groundwater springs (3.0 km from the water)Lozorno, horáreň Rusníky, 300m VJV od K 226 – borehole (470 m from the water)Lozorno, 450m VJV od K 391 Kopanička – source (510 m from the water)Lozorno, 950m SSZ od K 503 Spálenisko – source (740 m from the water)Lozorno,studňa pri č.d. 377, 900m ZJZ od K 202 – well (800 m from the water)Lozorno, 600m ZJZ od K202 – well (850 m from the water)Lozorno, studňa pred č.d. 219, 950m SSV od K 190 – well (970 m from the water)Lozorno, 1200m VSV od K 377 Ohek – source (1.2 km from the water)Lozorno-Močiarna 900m ZJZ od K 400 – source (1.3 km from the water)Lozorno-Bukovina, 650m V od K 320 – source (1.7 km from the water)Lozorno, č.d. 702, 1000m JZ od K182 – borehole (2.2 km from the water)Lozorno,studňa pri č.d. 876, 1050 VJV od K 169 – well (2.3 km from the water)Stupava, Červený domček, 850m ZSZ od K 424 – source (2.4 km from the water)Stupava, 550m SSZ od K468 Ostrovec – source (2.5 km from the water)Lozorno, 1000m ZSZ od K587 Volkovisko – source (2.7 km from the water)Lozorno, 1500m Z od K 241 Dúbrava – borehole (2.9 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 floodplains1×

    Quaternary cover

    • deluvial sediments50%SR 16 %
    • proluvial sediments of terraced alluvial cones50%SR 2.5 %

    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 (mountain range)50%SR 60 %
    • positive unit (lowland hills)50%SR 14 %

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

    Direction of neotectonic movements

    • medium uplift50%SR 32 %
    • very small uplift50%SR 6.4 %

    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

    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 1 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)

    • Sand100%SR 3.9 %

    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 (Sand)100%SR 0.3 %

    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 and Neogene of the southern and southeastern parts of the Borská lowland100%SR 0.0 %

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

    Genetic type of groundwater

    • carbonate, or carbonate-silicatogenic mineralisation100%SR 2.5 %

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

    Chemical type of groundwater

    • Ca-Mg-HCO3, or Ca-Mg-HCO3-SO4 type100%SR 1.7 %

    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)132–709m a.s.l.
    • Average elevation of the units371m a.s.l.
    • Average slope9.6°
    • Average January temperature-3.5°C
    • Average July temperature18.5°C
    • Annual precipitation700mm

    Geomorphological units

    • Malé Karpaty100%SR 1.4 %

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

    Geomorphological regions

    • Fatra–Tatra area100%SR 21 %

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

    Climatic-geographical types

    • mountain climate100%SR 33 %

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

    Susceptibility of soils to acidification

    • soils susceptible to acidification100%SR 31 %

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

    Soil contamination (map 1:500,000)

    • relatively clean soil100%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

    +24nT

    range 14 to 34 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

    -18mGal

    residual +9.8 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 7.88typical 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

    15.3°dH, hard

    Sum of calcium and magnesium (2.74 mmol/l). Hard water is buffered and its pH changes more slowly; soft water is more sensitive to acid rain.

    Dissolved substances

    396mg/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

    • CalciumCa90.3 mg/lpercentile 80
    • FluoridesF0.176 mg/lpercentile 74
    • SulphatesSO444.5 mg/lpercentile 55
    • BicarbonatesHCO3222 mg/lpercentile 53
    • ChloridesCl8.39 mg/lpercentile 49
    • MagnesiumMg11.8 mg/lpercentile 38
    • SodiumNa5.90 mg/lpercentile 33
    • PotassiumK1.61 mg/lpercentile 23

    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

    • AmmoniumNH40.165 mg/lpercentile 63
    • NitratesNO36.79 mg/lpercentile 55
    • Chemical oxygen demandChSK2.46 mg/lpercentile 32
    • PhosphatesPO40.0411 mg/lpercentile 23

    Metals

    • ZincZn7.68 μg/lpercentile 55
    • ManganeseMn24.2 μg/lpercentile 44
    • IronFe0.0355 mg/lpercentile 13
    • AluminiumAl12.1 μg/lpercentile 7

    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.

    • LeadPbhigh (top 5 %)
      highest 5.60 μg/lmedian 4.05 μg/l2 samples50 % below the limit of quantification

      Highest value: Suchý potok2008, 500 m from the water. Comparison: percentile 95 of all samples in Slovakia.

    • LithiumLihigh (top 5 %)
      highest 45.0 μg/lmedian 28.0 μg/l2 samples

      Highest value: Suchý potok2008, 500 m from the water. Comparison: percentile 95 of all samples in Slovakia.

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

      Highest value: Suchý, potok2003, 920 m from the water. Comparison: percentile 50 of all samples in Slovakia.

    • CopperCutypical value
      highest 1.30 μg/lmedian 1.15 μg/l2 samples50 % below the limit of quantification

      Highest value: Suchý, potok2003, 920 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: Suchý potok2008, 500 m from the water. Comparison: percentile 46 of all samples in Slovakia.

    • BariumBabelow half of Slovakia
      highest 33.0 μg/lmedian 32.0 μg/l2 samples

      Highest value: Suchý potok2008, 500 m from the water. Comparison: percentile 41 of all samples in Slovakia.

    • AntimonySbbelow half of Slovakia
      highest 0.500 μg/lmedian 0.500 μg/l1 sample100 % below the limit of quantification

      Highest value: Suchý, potok2003, 920 m from the water. Comparison: percentile 37 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: Suchý potok2008, 500 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: Suchý potok, 500 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 dioxideSiO2below half of Slovakia
      highest 8.54 mg/lmedian 8.32 mg/l2 samples

      Highest value: Suchý, potok2003, 920 m from the water. Comparison: percentile 37 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

    • AntimonySb0.877 mg/kgpercentile 66
    • LeadPb18.9 mg/kgpercentile 66
    • MercuryHg0.126 mg/kgpercentile 59
    • BismuthBi0.237 mg/kgpercentile 58
    • ZincZn95.8 mg/kgpercentile 50
    • MolybdenumMo0.356 mg/kgpercentile 46
    • CadmiumCd0.154 mg/kgpercentile 42
    • TinSn2.29 mg/kgpercentile 34
    • CopperCu19.8 mg/kgpercentile 32
    • CobaltCo6.98 mg/kgpercentile 26
    • ArsenicAs4.88 mg/kgpercentile 24
    • SeleniumSe0.144 mg/kgpercentile 22
    • NickelNi16.5 mg/kgpercentile 16
    • ChromiumCr49.3 mg/kgpercentile 15
    • VanadiumV41.1 mg/kgpercentile 5

    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)
    • ManganeseMn1,501 mg/kgpercentile 89
    • SodiumNa0.999 %percentile 72
    • CalciumCa3.51 %percentile 71
    • PhosphorusP879 mg/kgpercentile 55
    • PotassiumK1.47 %percentile 43
    • AluminiumAl4.53 %percentile 12
    • TitaniumTi3,374 mg/kgpercentile 12
    • IronFe1.71 %percentile 5
    • MagnesiumMg0.458 %percentile 4
    Further elements (barium, strontium, lithium, rubidium, zirconium, yttrium, cerium, boron, beryllium, gallium)
    • StrontiumSr145 mg/kgpercentile 58
    • ZirconiumZr400 mg/kgpercentile 49
    • BariumBa430 mg/kgpercentile 47
    • GalliumGa13.3 mg/kgpercentile 44
    • BoronB56.0 mg/kgpercentile 37
    • CeriumCe54.9 mg/kgpercentile 35
    • RubidiumRb79.0 mg/kgpercentile 26
    • BerylliumBe0.909 mg/kgpercentile 23
    • YttriumY18.5 mg/kgpercentile 11
    • LithiumLi21.9 mg/kgpercentile 10

    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.

    Chemical water types nearby

    • Ca-HCO37×
    • Ca-Mg-HCO32×
    • Ca-Na-Mg-SO4-HCO31×
    • Ca-NO3-SO41×
    • Ca-Mg-Na-SO4-HCO31×
    • Ca-SO4-NO31×
    • Ca-HCO3-SO41×
    • Na-Ca-NO3-HCO31×

    Water quality class according to the hydrogeochemical map

    • class A5×
    • class D4×
    • class H4×
    • class F1×
    • class E1×

    Metals in groundwater

    • ChromiumCrextreme (top 1 %)
      highest 22.3 μg/lmedian 0.600 μg/l15 samples33 % below the limit of quantification

      Highest value: prameň1993, 2.5 km from the water. Comparison: percentile 99 of all samples in Slovakia.

    • LithiumLihigh (top 5 %)
      highest 87.0 μg/lmedian 18.0 μg/l15 samples7 % below the limit of quantification

      Highest value: studňa1993, 800 m from the water. Comparison: percentile 97 of all samples in Slovakia.

    • CopperCuhigh (top 5 %)
      highest 9.50 μg/lmedian 2.50 μg/l15 samples

      Highest value: prameň1993, 1.3 km from the water. Comparison: percentile 97 of all samples in Slovakia.

    • CadmiumCdhigh (top 5 %)
      highest 0.800 μg/lmedian 0.250 μg/l15 samples80 % below the limit of quantification

      Highest value: prameň1993, 1.3 km from the water. Comparison: percentile 96 of all samples in Slovakia.

    • AntimonySbhigh (top 5 %)
      highest 1.20 μg/lmedian 0.100 μg/l15 samples80 % below the limit of quantification

      Highest value: studňa1994, 850 m from the water. Comparison: percentile 96 of all samples in Slovakia.

    • ZincZnhigh (top 5 %)
      highest 1,470 μg/lmedian 34.0 μg/l15 samples7 % below the limit of quantification

      Highest value: vrt1994, 2.2 km from the water. Comparison: percentile 96 of all samples in Slovakia.

    • AluminiumAlhigh (top 5 %)
      highest 0.0900 mg/lmedian 0.0100 mg/l15 samples40 % below the limit of quantification

      Highest value: prameň1993, 1.2 km from the water. Comparison: percentile 95 of all samples in Slovakia.

    • ArsenicAshigh (top 5 %)
      highest 4.20 μg/lmedian 0.500 μg/l15 samples67 % below the limit of quantification

      Highest value: vrt1993, 470 m from the water. Comparison: percentile 95 of all samples in Slovakia.

    • LeadPbhigh (top 5 %)
      highest 3.00 μg/lmedian 1.00 μg/l15 samples47 % below the limit of quantification

      Highest value: prameň1993, 1.2 km from the water. Comparison: percentile 95 of all samples in Slovakia.

    • SeleniumSeslightly elevated
      highest 1.10 μg/lmedian 0.500 μg/l15 samples87 % below the limit of quantification

      Highest value: vrt1994, 2.2 km from the water. Comparison: percentile 84 of all samples in Slovakia.

    • IronFetypical value
      highest 0.00500 mg/lmedian 0.00500 mg/l8 samples100 % below the limit of quantification

      Highest value: prameň1993, 2.5 km from the water. Comparison: percentile 50 of all samples in Slovakia.

    • MercuryHgbelow half of Slovakia
      highest 0.100 μg/lmedian 0.100 μg/l15 samples100 % below the limit of quantification

      Highest value: prameň1993, 2.5 km from the water. Comparison: percentile 46 of all samples in Slovakia.

    Gold, mines and deposits

    Was gold panned and ore mined here? Gold and ore minerals in river sediments, old mine workings, deposits and ore occurrences    Mine workings37

    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.

    • Ilmenit (FeTiO₃)15 samples, at most 1115 grains
    • Rutil (TiO₂)15 samples, at most 315 grains
    • Magnetite (Fe₃O₄)13 samples, at most 315 grains
    • Anatas (TiO₂)12 samples, at most 55 grains
    • Monazit ((Ce,La,Nd)PO₄)12 samples, at most 55 grains
    • Barite (BaSO₄)11 samples, at most 15 grains
    • Limonite (FeO(OH)·nH₂O)11 samples, at most 315 grains
    • Pyrite (FeS₂)10 samples, at most 55 grains
    • Hematite (Fe₂O₃)7 samples, at most 55 grains
    • Scheelit (CaWO₄)4 samples, at most 2 grains
    • Arsenopyrite (FeAsS)2 samples, at most 50 grains
    • Kasiterit (SnO₂)1 sample, at most 2 grains
    • Galena (PbS)1 sample, at most 5 grains

    Rock-forming and accessory minerals

    • Staurolit (Fe₂Al₉Si₄O₂₃(OH))15 samples, at most 815 grains
    • Amfiboly (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂)14 samples, at most 315 grains
    • Andaluzit (Al₂SiO₅)14 samples, at most 15 grains
    • Epidot (Ca₂(Al,Fe)₃Si₃O₁₂(OH))14 samples, at most 55 grains
    • Granáty ((Fe,Mg,Ca,Mn)₃Al₂Si₃O₁₂)14 samples, at most 4115 grains
    • Zirconium (ZrSiO₄)14 samples, at most 315 grains
    • Pyroxény ((Mg,Fe,Ca)₂Si₂O₆)13 samples, at most 55 grains
    • Sillimanit (Al₂SiO₅)13 samples, at most 55 grains
    • Tourmalines (complex borosilicate)13 samples, at most 55 grains
    • Kyanit (Al₂SiO₅)12 samples, at most 315 grains
    • Spinel (Cr-spinel) ((Mg,Fe)(Al,Cr)₂O₄)11 samples, at most 5 grains
    • Apatit (Ca₅(PO₄)₃(F,Cl,OH))7 samples, at most 5 grains
    • Titanit (CaTiSiO₅)7 samples, at most 22 grains
    • Korund (Al₂O₃)1 sample, at most 315 grains

    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)

    • Mn37×

    Types of mining objects

    • spoil heap11×
    • adit10×
    • pinge (mining subsidence pit), line of pinge pits9×
    • other type of object5×
    • shaft2×

    Nearest old mine workings

    1. Halda pri štôlni LipníkyTypespoil heapMinedMn oresEnded1944
      830 m
    2. Štôlňa LipníkyTypeaditMinedMn oresEnded1944
      860 m
    3. PingyTypepinge (mining subsidence pit), line of pinge pitsMinedMn ores
      1.3 km
    4. Halda pri štôlni SkalaTypespoil heapMinedMn oresEnded1944
      1.7 km
    5. Štôlňa SkalaTypeaditMinedMn oresEnded1944
      1.7 km
    6. Prepadliny štôlne SkalaTypeother type of objectMinedMn oresEnded1944
      1.7 km
    7. 3. pingaTypepinge (mining subsidence pit), line of pinge pitsMinedMn ores
      2.0 km
    8. Štôlňa BTypeaditMinedMn ores
      2.0 km
    9. Halda pri štôlni BTypespoil heapMinedMn ores
      2.0 km
    10. Halda pri štôlni ŠTypespoil heapMinedMn ores
      2.1 km

    Deposits and mining areas

    1. Bažantnica IMineralfoundry sandsStatus and organisationDeposit with expected use of reserves – ŠGÚDŠ Bratislava
      3.4 km
    2. Bažantnica IMineralfoundry sandsStatus and organisationDeposit with expected use of reserves – ŠGÚDŠ Bratislava
      3.4 km
    3. Turecký vrchMineralbuilding stoneStatus and organisationMined deposit – Vojenské lesy a majetky, š.p., o.z. Malacky
      3.5 km

    Ore occurrences in the metallogenic map

    1. Červený domčekOre typeManganese oresMetalsMnTypemineralogical occurrence
      1.3 km

    Geothermal energy, mineral waters and boreholes

    Is there heat underground? Geothermal potential, geothermal boreholes by temperature, mineral springs and the borehole archive    Boreholes58

    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 km45 °C80 °C

    Rock temperature with depth

    45 / 80 °Cat depths of 1,000 and 2,000 m

    increase of 35 °C per km

    The line shows the rock temperature; the dotted part is only an extension to the surface. Heat flow 65 mW/m².

    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.

    58 boreholes in the 3 km zone, of which 14 hydrogeological and 44 other; with an archive report number 58.

    Borehole depths

    • up to 10 m36×
    • 10–30 m9×
    • 30–100 m11×
    • 100–300 m2×
    • over 300 m0×

    Nearest boreholes

    1. 8Typeengineering-geologicalDepth4.8 mArchive report10641
      30 m
    2. 5Typeengineering-geologicalDepth5.0 mArchive report10641
      40 m
    3. 1Typeengineering-geologicalDepth8.0 mArchive report10641
      70 m
    4. 6Typeengineering-geologicalDepth3.5 mArchive report10641
      90 m
    5. 11Typeengineering-geologicalDepth5.0 mArchive report10641
      110 m
    6. 9Typeengineering-geologicalDepth5.0 mArchive report10641
      110 m
    7. 7Typeengineering-geologicalDepth5.0 mArchive report10641
      130 m
    8. 2Typeengineering-geologicalDepth3.5 mArchive report10641
      130 m
    9. 10Typeengineering-geologicalDepth3.5 mArchive report10641
      180 m
    10. 3Typeengineering-geologicalDepth6.0 mArchive report10641
      200 m
    11. 12Typeengineering-geologicalDepth5.0 mArchive report10641
      220 m
    12. 4Typeengineering-geologicalDepth10.0 mArchive report10641
      290 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

    46nGy/h in air

    range 43 to 49 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.

    • Potassium (K)K1.41 %percentile 73
    • Equivalent thorium (eTh)eTh6.36 ppm16th percentile
    • Equivalent uranium (eU)eU2.03 ppm8th 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 137CsCS1371,652 Bq/m²percentile 57

    Radon risk by isopleths

    • low100%SR 36 %

    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.

    • developed spring104 Bq/l · median 104 Bq/l · 1 sample
    • water source for individual supply23.5 Bq/l · median 23.5 Bq/l · 1 sample
    • free-flowing borehole13.2 Bq/l · median 13.2 Bq/l · 1 sample
    • well8.92 Bq/l · median 8.92 Bq/l · 1 sample
    • source4.83 Bq/l · median 4.83 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 landfills2

    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. MA (011) / Lozorno – stará pieskovňa za štrekou – landfill odpadovActivitylandfill komunálneho odpadu – zariadenia na nakladanie s odpadmiSubstanceleachate / NH4+, metalsClassification32 b. (32)
      1.7 km

    Waste landfills

    1. PD Lozorno – LozornoYear established1982Monitoringmonitored
      130 m