Spojovací kanál Cergát -Váh – fishing districts

Today on the Spojovací kanál Cergát -Váh watercourse

Is it worth going today? Fishing conditions score, the best window of the day and fishing districts from the best conditionsConditions score27 / 100Best window15:00

Average of the watercourse's fishing districts

27from 100

Low 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 fishing district.

Best window today

15:00–17:00

Spojovací kanál Cergát -Váh, window score 37.

The score is an estimate of conditions based on weather, water and surroundings, not a bite forecast. Recalculated at 01:23.

Map and fishing districts of the Spojovací kanál Cergát -Váh 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 districts1Length4,0 km

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

Region

River basin

District and local SRZ organization

1445fishing districts

Pick a category to narrow the selection. Next to each option you can see how many fishing districts remain.

Map color

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Fish and catches on the Spojovací kanál Cergát -Váh watercourse

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

Game species recorded in the fishing district

Anglers' catches

Nobody has added a catch from these fishing districts yet.

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Organizations and districts on the Spojovací kanál Cergát -Váh watercourse

Who manages the fishing districts and where they areOrganizations1Districts1

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

Nové Zámky1 fishing district · 4.0 km27Spojovací kanál Cergát -Váh27

Nové Zámky district, Nitra Region

Water pollution on the Spojovací kanál Cergát -Váh watercourse

Water quality according to SHMÚ, wastewater treatment plants near the fishing districts and groundwater nearbyFishing districts failing a standard1 / 1

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.

harmful substances above the standard at at least one station (metals, pesticides, PFAS, solvents)1
ammonium or nitrites above the standard at at least one station1
iron from 1 mg/l1

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 Spojovací kanál Cergát -Váh watercourse

Elevation profile, 3D terrain of the surroundings and historical satellite imagesHighest point111 m n. m.Lowest point110 m n. m.

Elevation profile of the watercourse

How the watercourse falls downstream: fall, gradient and water speed.

Very slow watercourse A lowland, almost stagnant section: calm, often more turbid water; the bottom tends to be muddy and sandy. Typical of carp fishing districts.

Elevation profile of the watercourse: from 113 to 109 m a.s.l. over 4.0 km.

Fishing districts in order from the highest (left) to the lowest. There may be a section without a fishing district between fishing districts; it is not displayed.

Highest point: 111 m a.s.l.
Lowest point: 110 m a.s.l.
Fall of the fishing districts: 1.5 m
Average slope: 0.4 ‰
Sinuosity: 1.03

Source: Open Topo Data (eudem25m), 4 Nov 2026. Gradient and fall are approximate and include only the sections of fishing districts.

Terrain in 3D

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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 Spojovací kanál Cergát -Váh from 2017 — **2017**imaged 18 Jul 2017

Aerial image of watercourse Spojovací kanál Cergát -Váh from 2020 — **2020**imaged 20 Aug 2020

Aerial image of watercourse Spojovací kanál Cergát -Váh from 2023 — **2023**imaged 21 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 watercourses near the Spojovací kanál Cergát -Váh watercourse

The nearest rivers, streams and water bodies in the same river basinWatercourses6

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 (4 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

Young sediments50% of the water line

50% river alluvium

Young unconsolidated sediments; fine material easily washes into the stream during rain. Geological Map of Slovakia 1:50,000.

Water according to the atlas

pH 7.6modeled estimate

water type Ca–Mg–HCO₃–SO₄

Mineralization 1,181 mg/l, very hard water (38.5 °dH). Interpolation of measurements from the Geochemical Atlas of Slovakia, not a measurement in the stream.

Elements in river sediment

2 from 15elements in the top 10%

highest: Mercury 1.24 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.

Heat underfoot

55°C at 1,000 m depth

heat flow 85 mW/m²

At a depth of 2,000 m about 95 °C (increase of 40 °C per kilometer). Atlas of Geothermal Energy of Slovakia.

Natural gamma radiation

48nGy/h dose rate

percentile 31 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 8indicators in the top 5%

highest: Cadmium 1.10 μg/l

Position of the highest measured value in the distribution of all surface water samples in Slovakia: percentile 96 (Komočský kanál).

Boreholes and groundwater analyses

218boreholes within 3 km

145 water analyses nearby

Of these, 218 have an archive report from Geofond. The boreholes are hydrogeological, geological, engineering-geological and other.

Geothermal energy

70°C at the wellhead

6 geothermal boreholes within 10 km

Warmest: Kolárovo – HGK-1, yield 20.9 l/s, 5.0 km from the water.

Environmental burdens and landfills

6sites within 3 km

1 environmental burden, 5 landfills

Nearest burden: Kolárovo – Pačérok, 2.5 km from the water. Proximity does not mean that substances leak from the site into the water.

Deposits and ore occurrences

1record within 5 km

1 ore occurrence

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.

Environmental burdens 6Geothermal energy 11Ores and metals 1Boreholes and water analyses 57

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 center.

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 center for areas), with an accuracy of tens of meters. 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 modeled 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.

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

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

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

Geological age of the rocks

Quaternary100%

Most common rock units

System	Age	Unit	Points
Quaternary	Holocene	anthropogenic sediments: fills, spoil heaps and landfills	1×
Quaternary	Holocene	fluvial sediments: lithofacially undivided floodplain loams, or sandy to gravelly loams of valley floodplains and floodplains	1×

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 cover21m

15 – 2050%SR 1.7 %
20 – 3050%SR 1.3 %

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

negative unit (lowland plains and basins, neotectonic depressions)100%SR 13 %

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

Direction of neotectonic movements

very small subsidence100%SR 7.3 %

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)

Danube Basin100%SR 23 %

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

Engineering-geological districts

region of alluvial-plain deposits100%SR 15 %

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 2 of 2 points on the water line.

Hydrogeology: aquifers and groundwater

Streams and rivers are fed by groundwater. Hydrogeological maps show in which rocks the water is stored, how permeable they are and what the water in them is like. The data come from ŠGÚDŠ maps, not from measurements at a particular water.

Aquifer rocks (hydrogeological map 1:200,000)

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 interfluve of the Danubian Flat100%SR 2.3 %

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

Chemical type of groundwater

Ca-Mg-HCO3100%SR 26 %

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

Geothermal groundwater bodies

Central depression of the Danube Basin100%SR 21 %

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)103–191m a.s.l.
Average elevation of the units114m a.s.l.
Average slope0.4°
Average January temperature-2.5°C
Average July temperature20.0°C
Annual precipitation590mm

Geomorphological units

Danubian Flat100%SR 8.4 %

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

Geomorphological regions

Danubian Lowland100%SR 18 %

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 not susceptible to acidification100%SR 27 %

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 A100%SR 45 %

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.

Magnetic anomaly

+67nT

range 58 to 76 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

-4mGal

residual +2.4 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

Modeled 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.

Water acidity

pH 7.56typical 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

38.5°dH, very hard

Sum of calcium and magnesium (6.88 mmol/l). Hard water is buffered and its pH changes more slowly; soft water is more sensitive to acid rain.

Dissolved substances

1,181mg/l mineralization

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

Ionic composition of the water

Cations (positive ions)

Ca 56Mg 27Na+K 17

Anions (negative ions)

HCO₃ 57SO₄ 31Cl 12

Water type by dominant ions: Ca–Mg–HCO₃–SO₄

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

Major ions

CalciumCa185 mg/lpercentile 98
SulfatesSO4237 mg/lpercentile 96
BicarbonatesHCO3552 mg/lpercentile 96
MagnesiumMg54.9 mg/lpercentile 95
SodiumNa60.8 mg/lpercentile 95
ChloridesCl69.1 mg/lpercentile 95
FluoridesF0.217 mg/lpercentile 84
PotassiumK3.74 mg/lpercentile 61

dot: average along the water line, line: from the lowest to the highest value, scale: position among sample points on streams in Slovakia (0 to 100th percentile)

Nutrients and organic pollution

Chemical oxygen demandChSK6.98 mg/lpercentile 92
PhosphatesPO40.246 mg/lpercentile 64
AmmoniumNH40.159 mg/lpercentile 62
NitratesNO31.88 mg/lpercentile 6

Metals

ManganeseMn182 μg/lpercentile 89
IronFe0.102 mg/lpercentile 50
ZincZn3.31 μg/lpercentile 23
AluminumAl12.9 μg/lpercentile 8

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.

CadmiumCdhigh (top 5%)
highest 1.10 μg/lmedian 1.10 μg/l1 sample
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: Komočský kanál, 60 m from the water. Comparison: percentile 96 of all samples in Slovakia.
BariumBaslightly elevated
highest 75.0 μg/lmedian 75.0 μg/l1 sample
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: Komočský kanál2010, 60 m from the water. Comparison: percentile 80 of all samples in Slovakia.
CopperCutypical value
highest 2.00 μg/lmedian 2.00 μg/l1 sample
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: Komočský kanál2010, 60 m from the water. Comparison: percentile 66 of all samples in Slovakia.
SeleniumSebelow half of Slovakia
highest 0.500 μg/lmedian 0.500 μg/l1 sample100% below the limit of quantification
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: Komočský kanál2010, 60 m from the water. Comparison: percentile 46 of all samples in Slovakia.
LeadPbbelow half of Slovakia
highest 2.50 μg/lmedian 2.50 μg/l1 sample100% below the limit of quantification
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: Komočský kanál2010, 60 m from the water. Comparison: percentile 43 of all samples in Slovakia.
LithiumLibelow half of Slovakia
highest 5.00 μg/lmedian 5.00 μg/l1 sample100% below the limit of quantification
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: Komočský kanál2010, 60 m from the water. Comparison: percentile 34 of all samples in Slovakia.
ChromiumCrbelow half of Slovakia
highest 1.00 μg/lmedian 1.00 μg/l1 sample100% below the limit of quantification
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: Komočský kanál2010, 60 m from the water. Comparison: percentile 32 of all samples in Slovakia.
ArsenicAsbelow half of Slovakia
highest 0.500 μg/lmedian 0.500 μg/l1 sample100% below the limit of quantification
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: Komočský kanál2010, 60 m from the water. Comparison: percentile 22 of all samples in Slovakia.

Major ions, mineralization and pH

Basic water chemistry: which rocks the minerals in it come from.

Silicon dioxideSiO2typical value
highest 17.3 mg/lmedian 17.3 mg/l1 sample
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: Komočský kanál2010, 60 m from the water. Comparison: percentile 72 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

MercuryHg1.24 mg/kgpercentile 95
ChromiumCr139 mg/kgpercentile 93
SeleniumSe0.560 mg/kgpercentile 90
CobaltCo9.82 mg/kgpercentile 70
NickelNi27.2 mg/kgpercentile 61
CopperCu25.0 mg/kgpercentile 56
ArsenicAs6.99 mg/kgpercentile 55
BismuthBi0.189 mg/kgpercentile 38
CadmiumCd0.136 mg/kgpercentile 37
LeadPb13.5 mg/kgpercentile 37
ZincZn79.8 mg/kgpercentile 31
AntimonySb0.452 mg/kgpercentile 30
VanadiumV59.9 mg/kgpercentile 29
TinSn1.92 mg/kgpercentile 18
MolybdenumMo0.208 mg/kgpercentile 17

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, aluminum, calcium, magnesium, potassium, sodium, titanium, manganese, phosphorus)

CalciumCa6.01 %percentile 85
MagnesiumMg1.58 %percentile 82
IronFe2.78 %percentile 55
PhosphorusP884 mg/kgpercentile 55
AluminumAl5.23 %percentile 35
SodiumNa0.789 %percentile 33
ManganeseMn614 mg/kgpercentile 20
PotassiumK1.28 %percentile 17
TitaniumTi3,351 mg/kgpercentile 12

Further elements (barium, strontium, lithium, rubidium, zirconium, yttrium, cerium, boron, beryllium, gallium)

StrontiumSr172 mg/kgpercentile 76
LithiumLi35.2 mg/kgpercentile 76
BariumBa461 mg/kgpercentile 58
CeriumCe56.6 mg/kgpercentile 41
BoronB55.5 mg/kgpercentile 35
RubidiumRb79.6 mg/kgpercentile 27
YttriumY23.3 mg/kgpercentile 27
ZirconiumZr317 mg/kgpercentile 24
GalliumGa10.4 mg/kgpercentile 22
BerylliumBe0.827 mg/kgpercentile 19

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-SO4-HCO35×
Ca-HCO34×
Na-Ca-HCO31×
Ca-Mg-HCO31×

Water quality class according to the hydrogeochemical map

class H6×
class D5×

Metals in groundwater

AluminumAlextreme (top 1%)
highest 0.270 mg/lmedian 0.0100 mg/l11 samples36% below the limit of quantification
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: vrt1994, 1.8 km from the water. Comparison: percentile 99 of all samples in Slovakia.
ArsenicAsextreme (top 1%)
highest 16.7 μg/lmedian 0.500 μg/l11 samples73% below the limit of quantification
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: vrt1993, 2.6 km from the water. Comparison: percentile 99 of all samples in Slovakia.
ZincZnhigh (top 5%)
highest 3,246 μg/lmedian 143 μg/l11 samples
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: vrt1993, 2.5 km from the water. Comparison: percentile 98 of all samples in Slovakia.
CadmiumCdhigh (top 5%)
highest 1.40 μg/lmedian 0.250 μg/l11 samples64% below the limit of quantification
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: vrt1994, 1.8 km from the water. Comparison: percentile 98 of all samples in Slovakia.
AntimonySbhigh (top 5%)
highest 1.60 μg/lmedian 0.100 μg/l11 samples73% below the limit of quantification
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: studňa1994, 2.2 km from the water. Comparison: percentile 96 of all samples in Slovakia.
MercuryHghigh (top 5%)
highest 0.300 μg/lmedian 0.100 μg/l11 samples91% below the limit of quantification
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: vrt1993, 1.7 km from the water. Comparison: percentile 96 of all samples in Slovakia.
LeadPbhigh (top 5%)
highest 3.00 μg/lmedian 0.500 μg/l11 samples73% below the limit of quantification
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: vrt1994, 1.8 km from the water. Comparison: percentile 95 of all samples in Slovakia.
LithiumLielevated (top 10%)
highest 40.0 μg/lmedian 4.00 μg/l11 samples
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: studňa1994, 2.6 km from the water. Comparison: percentile 92 of all samples in Slovakia.
ChromiumCrelevated (top 10%)
highest 2.40 μg/lmedian 0.250 μg/l11 samples73% 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 91 of all samples in Slovakia.
SeleniumSeslightly elevated
highest 1.10 μg/lmedian 0.500 μg/l11 samples91% below the limit of quantification
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: studňa1994, 2.2 km from the water. Comparison: percentile 84 of all samples in Slovakia.
CopperCutypical value
highest 1.10 μg/lmedian 0.250 μg/l11 samples
1. up to 50%
2. 50–75
3. 75–90
4. 90–99
5. above 99
Highest value: studňa1994, 2.6 km from the water. Comparison: percentile 55 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 archiveHottest borehole70 °CBoreholes218

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.

Rock temperature with depth

55 / 95 °Cat depths of 1,000 and 2,000 m

increase of 40 °C per km

The line shows the rock temperature; the dotted part is only an extension to the surface. Heat flow 85 mW/m².

Geothermal groundwater bodies beneath the water line

Central depression of the Danube Basin100%SR 21 %

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

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.

Geothermal boreholes by water temperature

Kolárovo – HGK-1Yield20.9 l/sDepth1506 mChemical water typeNa-HCO3Usein useFrom the water5.0 km
70 °C
Kolárovo (Nesvady) – K-3Yield1.5 l/sDepth2834 mUseunusedFrom the water6.8 km
65 °C
Nesvady – GN-1Yield2.7 l/sDepth1505 mChemical water typeNa-HCO3UseunusedFrom the water7.9 km
60 °C
Nové Zámky – GNZ-1Yield4.5 l/sDepth1506 mChemical water typeNa-HCO3-ClUsein useFrom the water9.7 km
59 °C
Zemné – HGZ-1Depth1500 mChemical water typeNa-HCO3Usein use without data reportingFrom the water2.1 km
55 °C
Kolárovo – K-2Yield1.0 l/sDepth3135 mFrom the water4.2 km
–

Sources of geothermal and mineral waters

category e1Typemineral waterWater temperature (°C)56-80Yield (l/s)< 5Count1
7.9 km
FGTv-1Typegeothermal waterWater temperature (°C)55 – 80Yield (l/s)5 – 15Count1
9.1 km
GNZ-1Typegeothermal waterWater temperature (°C)55 – 80Yield (l/s)< 5Count1
9.6 km
category a1Typemineral waterWater temperature (°C)< 15Yield (l/s)< 5Count2
9.8 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.

218 boreholes in the 3 km zone, of which 20 hydrogeological and 198 other; with an archive report number 218.

Borehole depths

up to 10 m130×
10–30 m50×
30–100 m23×
100–300 m3×
over 300 m0×

Nearest boreholes

E-7Typeengineering-geologicalDepth10.0 mArchive report12240
10 m
E-6Typeengineering-geologicalDepth10.0 mArchive report12240
30 m
B-7Typeengineering-geologicalDepth10.0 mArchive report12240
30 m
C-7Typeengineering-geologicalDepth10.0 mArchive report12240
40 m
F-7Typeengineering-geologicalDepth10.0 mArchive report12240
40 m
D-7Typeengineering-geologicalDepth10.0 mArchive report12240
40 m
B-8Typeengineering-geologicalDepth10.0 mArchive report12240
50 m
F-6Typeengineering-geologicalDepth10.0 mArchive report12240
50 m
C-8Typeengineering-geologicalDepth10.0 mArchive report12240
60 m
B-6Typeengineering-geologicalDepth10.0 mArchive report12240
60 m
E-5Typeengineering-geologicalDepth10.0 mArchive report12240
60 m
C-6Typeengineering-geologicalDepth10.0 mArchive report12240
60 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.

Gamma radiation dose rate

48nGy/h in air

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)K1.27 %percentile 35
Equivalent uranium (eU)eU2.46 ppm35th percentile
Equivalent thorium (eTh)eTh6.94 ppm32th 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 137CsCS1371,379 Bq/m²percentile 43

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.

free-flowing borehole11.0 Bq/l · median 11.0 Bq/l · 1 sample
stream, river3.88 Bq/l · median 3.88 Bq/l · 1 sample
well2.64 Bq/l · median 1.96 Bq/l · 2 samples
water source for public supply1.66 Bq/l · median 1.66 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 deformationsBurdens and landfills6

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

Kolárovo – PačérokActivitySK1000400P
2.5 km

Waste landfills

KomočaArea1 000 m²Year established1970Monitoring–
1.1 km
KomočaArea1 000 m²Year established1970Monitoring–
1.5 km
ZemnéArea200 m²Year established1985Monitoring–
2.4 km
Pačérok (bývalá skládka) – KolárovoArea100 000 m²Year established1981Monitoringmonitored
2.7 km
ZemnéArea200 m²Year established1970Monitoring–
2.7 km

The Spojovací kanál Cergát -Váh watercourse at a glance

Today on the Spojovací kanál Cergát -Váh watercourse

Average of the watercourse's fishing districts

Best window today

Map and fishing districts of the Spojovací kanál Cergát -Váh watercourse

Fish and catches on the Spojovací kanál Cergát -Váh watercourse

Game species recorded in the fishing district

Anglers' catches

Organizations and districts on the Spojovací kanál Cergát -Váh watercourse

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

Water pollution on the Spojovací kanál Cergát -Váh watercourse

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

Terrain and satellite images of the Spojovací kanál Cergát -Váh watercourse

Elevation profile of the watercourse

Historical images

More watercourses near the Spojovací kanál Cergát -Váh watercourse

Cergát

Rašelinisko Zemné

MR Neded Kopola

Rašelinisko Palárikovo

MR Vlčany I.

MR Vlčany II.

Geology and geochemistry of the Spojovací kanál Cergát -Váh stream

Geology at a glance and a map of the zone

Rock under the water

Water according to the atlas

Elements in river sediment

Heat underfoot

Natural gamma radiation

Old mine workings

Gold in river sediment

Trace elements in the stream water

Boreholes and groundwater analyses

Geothermal energy

Environmental burdens and landfills

Deposits and ore occurrences

Landslides and slope deformations

Map of the corridor

How to read these data

Rocks, groundwater and landscape

Geological structure beneath the water

Geological age of the rocks

Most common rock units

Quaternary cover

Tectonic division

Neotectonic units

Direction of neotectonic movements

Regional geological division

Regional geological division (subunits)

Engineering-geological districts

Engineering-geological formations

Susceptibility of the area to slope deformations

Hydrogeology: aquifers and groundwater

Aquifer rocks (hydrogeological map 1:200,000)

Aquifer type

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

Hydrogeological function

Main hydrogeological region

Chemical type of groundwater

Geothermal groundwater bodies

Relief, climate and soils

Geomorphological units

Geomorphological regions

Climatic-geographical types

Susceptibility of soils to acidification

Soil contamination (map 1:500,000)

Lithogeochemical types

Geophysical fields: magnetics and gravity

Magnetic anomaly

Bouguer gravity anomaly

Chemistry of water and river sediments

Surface water chemistry according to the atlas

Water acidity

Water hardness

Dissolved substances

Ionic composition of the water

Major ions

Nutrients and organic pollution

Metals

Trace elements in surface waters