Fishing district

VN Evička

CarpNo. 3-1420-1-1VN EvičkaHron basin
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Fishing district boundaries: Vodná plocha nádrže v obci Štiavnické Bane.

fishing district length
226m
district
Banská Štiavnica
region
Banská Bystrica Region
Aerial image of fishing district VN Evička with the line highlighted
Blue line: course of the fishing district (approximate). Orthophoto mosaic of Slovakia © GKÚ Bratislava, CC BY 4.0Google Maps

By the water now

Fishing conditionsFish activity indexOur calculation (0–100): the base is set by water temperature, adjusted by light, turbidity, oxygen, weather and other factors according to how well they are supported by studies. For each factor you can see the confidence and the source. A planning aid, not a bite forecast.

The score, the best window of the day and what pushes it up or down

Fishing conditions

Fish activity indexOur calculation (0–100): the base is set by water temperature, adjusted by light, turbidity, oxygen, weather and other factors according to how well they are supported by studies. For each factor you can see the confidence and the source. A planning aid, not a bite forecast.

Loading data…

Weather and forecast

Hour by hour, pressure and the next few days

Weather and forecast

Loading data…

Sky: sun, moon and solunar windowsSolunar periodsCalculated from the position of the Moon: major periods (about 2 h) around the Moon's passage above and below the horizon, minor periods (about 1 h) around moonrise and moonset. A scientifically unconfirmed theory: in a study of 361 fishing trips (Quigley et al. 2023) it did not predict bites. We treat it as a hypothesis with a weight of at most ±2 points.

Where the sun and moon are right now and when the best windows of the day will come

Sky: sun and moon

Solunar periodsCalculated from the position of the Moon: major periods (about 2 h) around the Moon's passage above and below the horizon, minor periods (about 1 h) around moonrise and moonset. A scientifically unconfirmed theory: in a study of 361 fishing trips (Quigley et al. 2023) it did not predict bites. We treat it as a hypothesis with a weight of at most ±2 points.

Drag along the axis to see where the sun and moon will be.

  • Sun
  • Moon
  • Golden hour
  • Main period
  • Minor period

Sun

  • Dawn06:09
  • Sunrise06:42
  • Sunset16:13
  • Dusk16:47

The day lasts 9 h 31 min.

MoonMoon phaseAt full and new moon the gravitational effect is strongest. On a clear full-moon night predators and carp often feed at night, and the day after may be weaker.

Nov1% illuminated
  • Moonrise07:06
  • Moonset15:43

Full moon around 24 Nov, new moon around 9 Nov.

Windows of the daySolunar periodsCalculated from the position of the Moon: major periods (about 2 h) around the Moon's passage above and below the horizon, minor periods (about 1 h) around moonrise and moonset. A scientifically unconfirmed theory: in a study of 361 fishing trips (Quigley et al. 2023) it did not predict bites. We treat it as a hypothesis with a weight of at most ±2 points.

  • Main solunar period22:04–00:04
  • Golden hour (morning)06:12–07:42
  • Minor solunar period06:36–07:36
  • Main solunar period10:28–12:28
  • Minor solunar period15:13–16:13
  • Golden hour (evening)15:13–16:43
  • Main solunar period22:53–00:53

Solunar theory is not scientifically confirmed; we treat it as a supplement. The golden hour is the time around sunrise and sunset, when fish often bite.

Map and fishing district data

Course of the water, spots along the water, character and basic data

48.43467, 18.86171 OpenStreetMap

The line shows the course of the fishing district according to the "Rybárske revíry" data 2026. Verify access points and exact boundaries on site.

Fishing district details

Manager
SVP, š.p. OZ Banská Bystrica
Fishing district user
SRZ
Organization
MO SRZ Banská Štiavnica (Local SRZ organization)
Area
Central Slovakia
Purpose
Fishing district
Minimal stocking
K3 100kg L2-3 20 kg

Characteristics

  • DepthDepthThe greatest depth from the fishing district description. Shallows warm up quickly and are rich in food; deep pools give shelter and a more stable temperature. 7 m
  • BottomBottomThe bottom material determines which fish live here and where they find food. Fish zones can be recognized by the bottom: rocky, gravelly, sandy to muddy. stony – loamy with mud deposits
  • BankWatercourse lineThe shape of the watercourse seen from above. In bends there is a deep scour under the outer bank and a shallow bar under the inner one; a winding stream has more shelter and changes in depth. smooth
  • ShadingShadingThe share of the water surface in shade. Shade lowers summer water temperatures and supplies insects and shelter; a sunny section warms up faster and becomes more overgrown. 5%
  • VegetationVegetationTree and herbaceous vegetation on the banks. Roots and branches create shelter, and leaves and twigs falling in provide food. It also determines where you can cast and where your rig gets snagged. oak
What this means for anglersexplanation of the bottom, vegetation, watercourse line and other data of this fishing district
  • Depth: Deep, over 6 m

    Typical of gravel pits and reservoirs. In summer, fish often stay above the thermocline or at its level; below it there is little oxygen.

  • Bottom: Stony bottom

    Typical of fast mountain and foothill streams. There are shelters for trout and other fish among the stones, but your rig often gets snagged.

  • Bottom: Muddy bottom

    Slow lowland waters and carp fishing districts. Mud hides food, but in summer there may be less oxygen near the bottom, and lures sink into it.

  • Bottom: Loamy bottom

    After rain the water quickly turns turbid and fish hunt more by smell. In turbid water more conspicuous and scented baits help.

  • Watercourse line: Smooth line

    Even bank without coves. Fish concentrate at rare obstacles: logs, rocks, inflows.

  • Shade: Sunny, up to 10% shade

    In summer the water warms up quickly and aquatic plants and algae thrive here. At midday fish move to deeper places.

  • Vegetation: Oak

    Old oaks by the water provide shade, and fallen branches and roots create cover.

The explanation is general and based on the fishing district description in the data and on common fishing practice. Actual conditions on site may differ; check them before you fish.

Law and fishing rules

Closed season, fishing hours, minimum sizes and daily limit. For guidance only: check them in the fishing regulations of the fishing district

Closed season for all fish

§ 13, paragraphs 3 and 5 of the Act

15 Mar – 31 May

fishing for all fish prohibitedoutside this period

The ban does not apply 1 May – 31 May during fishing competitions (§ 13, para. 3). It also does not apply to carp waters that are watercourses (but not reservoirs, dead-end, dead and cut-off arms), or to other water bodies (§ 13, para. 5). Check in the fishing regulations of the district which case your district is.

The protection periods by species (below) apply independently of this closed season.

Daily fishing hours

§ 11 of the Decree

Applies only outside the closed season. Outside these hours fishing is prohibited (§ 14(b) of the Act).

January to April, November, December6.00 – 21.00 h

May4.00 – 24.00 h

June to October0.00 – 24.00 h

Months missing from the table fall within the closed season. The hours in November and December on trout and grayling waters relate to the exception for fishing huchen (§ 13, para. 4 of the Act); check in the fishing regulations what may be caught at that time. On border waters the hours in the permit or the fishing regulations apply (§ 11, para. 2 of the Decree). The Act regulates night fishing in two wordings that seem to contradict each other at first sight, so always ask about it in the fishing regulations of the district or the fishing guard.

Rods, baits and fishing days

§ 18 of the Act
Number of rods
at most 2
Permitted methods
bottom fishing, float fishing, spinning, fly fishing
Hooks and baits
on a rod at most 2 hooks (bottom fishing, float fishing), artificial lure at most 3 hooks, a hook at most 3 points, fly fishing at most 3 flies
Live or dead baitfish
prohibited 15 Mar – 31 May; otherwise at least 10 cm and above the minimum size
Fishing days of the week
the law specifies no restriction
Ice fishing
prohibited (watercourses, reservoirs, arms)
Other
spinning and fly fishing with a fish imitation prohibited 15 Mar – 31 May; fishing from a boat prohibited on reservoirs 1 Jan – 31 May

This is a summary. For baits, hooks and groundbait also read the fishing regulations of the district, because the user may tighten the conditions.

How many fish you may keep per day

§ 14 of the Decree
  • 1pcsBlue groupsterlet, Siberian sturgeon, wels catfish
  • 2pcsGreen groupeel, carp, burbot, zander, pike, tench, barbel, lake brown trout, brown trout, grayling (combined)
  • 4pcsYellow grouprainbow trout, brook trout, common nase, vimba bream; added to the green or blue group (at most 4 fish in total)
  • 5kgOther speciesfor example crucian carp, breams, dace and chub (combined); invasive species are not counted

The blue and green groups cannot be combined. The limit applies per day, also when fishing in several districts, and once it is reached, fishing for that day ends. The species groups follow the SRZ interpretation of January 2026, not the text of the section directly. The district user may set a lower limit in the permit, in which case the stricter one applies.

Protection periods by species§ 10 of the Decree

During this period the species must not be caught, even if the water type otherwise allows fishing at that time. It applies independently of the closed season for all fish.

1 Jan – 15 Mar
burbot
1 Jan – 31 May
grayling, spirlin, northern pike
1 Jan – 15 Jun
wels catfish, zander (pikeperch), Volga pikeperch
1 Jan – 31 Oct
huchen (in border waters 1 Jan – 31 Aug)
15 Mar – 31 May
common carp in carp waters (does not apply 1 – 31 May during competitions, nor on other water bodies); asp, chub, dace, ide, sterlet, Siberian sturgeon, tench, barbel, vimba bream, zope, white-eye bream, common bream, common nase
1 Sep – 15 Apr
brown trout, brown trout (lake form)
1 Sep – 28 Feb
peled

Some species are protected all year round (for example zingel and streber, lampreys, gudgeons, spined loaches, maraena whitefish, Carpathian barbel, sabre carp) and fishing for them is always prohibited. The full list of species is in the guide The fishing law, rule by rule.

Minimum sizes§ 12 of the Decree

The shortest length from which you may keep a fish. The district user may raise the size, so look for the valid value in the permit and the fishing regulations.

  • grass carp60 cm
  • black carp60 cm
  • asp40 cm
  • huchen (Danube salmon)80 cm
  • chub25 cm
  • dace20 cm
  • ide30 cm
  • sterlet45 cm
  • Siberian sturgeon45 cm
  • common carp40 cm
  • tench30 cm
  • grayling33 cm
  • burbot35 cm
  • barbel40 cm
  • vimba bream30 cm
  • zope (blue bream)25 cm
  • white-eye bream25 cm
  • common bream30 cm
  • silver bream15 cm
  • common nase30 cm
  • rainbow trout27 cm
  • brown trout (lake form)50 cm
  • brown trout27 cm
  • peled25 cm
  • brook trout27 cm
  • wels catfish70 cm
  • northern pike60 cm
  • silver carp45 cm
  • bighead carp45 cm
  • European eel50 cm
  • zander (pikeperch)50 cm
  • Volga pikeperch35 cm

Total length is measured from the front of the head to the end of the longest ray of the tail fin (§ 12, para. 4). No minimum size applies, for example, to sunbleak, Prussian carp, European perch, roach, stone loach and invasive species.

Before and after fishing

  • Carry your fishing license and permit while fishing and show them when checked (§ 12 of the Act). Check that they are valid.
  • Before you start fishing, write down the date and the district number (no. 3-1420-1-1); after fishing, write down the number and weight of your catch (§ 14(d) of the Act). Fishing without a record is an offense.
  • Prohibited fishing methods, night fishing, competitions and other rules are covered in the guide The fishing law, rule by rule.

As of 6 Nov 2026: Act no. 216/2018 Coll. on fisheries (wording effective 1 Jan 2022) and Decree no. 381/2018 Coll. (wording effective 1 Jan 2019); we found no newer wording. The law may change; you can find the current wording on Slov-Lex (Act) and Slov-Lex (Decree).

News from the organization and catches from the fishing district

Catches from the fishing district

Nobody has recorded a catch in this fishing district yetBe the first: after approval it will also appear here in the ranking.

Terrain in 3D

Loading the 3D terrain model…

Water according to public sources

Water quality, river basin, bottom, fish, aquatic insects, wildlife and hazards from open databases. Except for wildlife and hazards, they are also included in the activity score.

Water suitability for the fishing district type

Water suitability for the district typeIndex 0 to 100: how well the properties of the water match the needs of trout, grayling or carp, depending on the district type. It is not a bite forecast or a statement about which fish live there.
63from 100
Water of below-average suitability for carp and cyprinids

The water is in the bottom 8% of 897 carp fishing districts with data.

  • Best fit: water acidity (pH)
  • Most missing: water hardness

Reliability low: we used 4 water data points; the rest are missing and are not part of the assessment.

  • Water hardnessLevel of evidence: Hypothesis

    ≈ 6.1 °dH (1.1 mmol/l of calcium and magnesium), ŠGÚDŠ atlas

    Moderately soft water: productivity is average.

    What we know about it

    Water with calcium and magnesium is more productive and buffers acidity swings better: trout production was higher in calcareous hard waters (Almodóvar et al. 2006), and an index based on dissolved solids and depth predicts fish yield from lakes (Ryder et al. 1974). In Irish streams, however, geology did not change trout density (Lehane et al. 2004), and Downing et al. (1990) showed that production is related rather to primary production. Hence only ±1 point. Hardness comes from the ŠGÚDŠ atlas, not from a measurement in the fishing district; it replaces the separately assessed bedrock of the basin.

    Sources: Almodóvar et al. 2006; Lehane et al. 2004; Ryder et al. 1974

    50
  • Water acidity (pH)Level of evidence: Partly supported

    pH 7.3, ŠGÚDŠ atlas

    The pH is within the range in which fish commonly thrive.

    What we know about it

    Below about pH 6 fish suffer, and trout and grayling are more sensitive than cyprinids (Alabaster and Lloyd 1982); in acidic soft water, aluminium is released from the soil and damages gills (Gensemer and Playle 1999). The pH from the atlas is a model estimate, so the reduction is only −1 or −2, and only where we have no pH measurement (which is assessed by a separate factor).

    Sources: Alabaster and Lloyd 1982; Gensemer and Playle 1999

    100
  • MineralizationLevel of evidence: Hypothesis

    ≈ 197 mg/l, ŠGÚDŠ atlas

    Medium mineralisation corresponds to productive streams and reservoirs.

    What we know about it

    Dissolved solids (mineralisation) are related to the fertility of the water, which is why Ryder used them to estimate fish production in lakes (Ryder 1965, Ryder et al. 1974). Downing et al. (1990) showed, however, that primary production is a better predictor of production. It does not enter the score, only the suitability index.

    Sources: Ryder 1965; Ryder et al. 1974; Downing et al. 1990

    59
  • Metals in sedimentLevel of evidence: Partly supported

    1 elements among the highest 10 % in Slovakia (ŠGÚDŠ atlas 1999)

    Metals in sediment can accumulate in benthic animals and fish; high values are often natural in ore areas.

    What we know about it

    The toxicity of metals to fish decreases with water hardness, because calcium competes with the metal for sites on the gills (Pagenkopf 1983). The ŠGÚDŠ atlas gives only the rank among streams, not a concentration comparable with a limit (MacDonald et al. 2000). In hard water we therefore rate metals more leniently, in soft water more strictly.

    Sources: Pagenkopf 1983; Gensemer and Playle 1999; MacDonald et al. 2000

    90

How this water would suit each type

  • Trout74
  • Grayling74
  • Carp63

The same water data evaluated against the requirements of trout, grayling and carp. The fishing district is registered as a carp district; its type is highlighted.

The index 0 to 100 compares the properties of the water with the requirements of the species (60 is the neutral value, 100 the ideal). The verbal rating comes from comparison with other fishing districts of the same type, because most Slovak waters have good values for their species. The index does not affect whether fish really occur in the fishing district (that is decided by stocking and the manager). Hardness, pH and mineralisation from the atlases are historical and model estimates. Only a small part of this feeds into the conditions score and fishing district quality (hardness ±1, atlas acidity −2 to 0, stream zone match ±1 to quality).

What follows from this

Public sources in the conditions scoreData on oxygen, nutrients, reservoir depth, watercourse size, bottom, fish species and insect swarming slightly adjust the "Fishing conditions" score. Each adjustment is shown separately in the score breakdown.
−14−40+4+120
Public data about this water hardly change the activity score.
  • None of the inputs changes the score significantly.

We assessed 17 factors; 1 of them change the score. The adjustments range from −14 to +12 points so that they do not outweigh the weather and water temperature. They are counted in the score, in the ranking and in the filters.

Life by the water0

  • Aquatic insect hatchesLevel of evidence: Anglers' practice

    0.4× the average month, 5 of 149 observations in the year, iNaturalist

    Aquatic insects are scarce this month; food near the bottom matters more.

    What we know about it

    Anglers fish "by the insects" (dry and wet fly). A measured relationship between catches and insect hatches is not documented in our sources.

    0

Do not change the score

Data for these factors is missing or within the normal range:

  • Dissolved oxygen
  • Nutrients in the water
  • Water acidity (pH)
  • Water acidity from the atlas
  • Water hardness
  • Ammonium ions in water
  • Water temperature for local species
  • Surface water (SHMÚ)
  • Nitrogen in groundwater
  • Harmful substances in groundwater
  • Iron in groundwater
  • Chlorides in groundwater
  • Wastewater treatment plants
  • Reservoir depth
  • Bottom by geology
  • Invasive species nearby

The rules are indicative and based on fishing practice and scientific studies; for each factor you can see how well it is supported. Weather, air pressure and water temperature affect the score more than this data does.

Groundwater nearby

Groundwater nearby (SHMÚ)Measured groundwater values from stations within 10 km of the fishing district (nitrates, harmful substances, ammonium, iron, chlorides) and the SHMÚ yearbooks.

Groundwater within 10 km (1 station)

  • Podhorie – HandrlovaBanská Štiavnica district · spring · 7.5 km from the fishing district
    no exceedance in 2025
    2017 to 2025

    In the yearbooks 2017 to 2025 no exceedance of the standard is recorded at the station.

    Measured values, year 2025, sampling 28 Apr 2025
    • Nitrates5.6 mg/l
    • Ammonium< 0.01 mg/l
    • Nitrites< 0.01 mg/l
    • Iron< 0.002 mg/l
    • Chlorides1.3 mg/l
    • Arsenic15% of the standard
  • substances from human activity
  • natural substances only
  • no exceedance recorded

Groundwater reaches streams as base flow, so the connection to the stream at the fishing district is only indirect. Natural substances (iron, manganese, sulfates, conductivity) are not counted in the yearbook-based assessment.

The data comes from the SHMÚ yearbooks (groundwater 2017 to 2025).

Bottom and bedrock

Bottom and bedrock (ŠGÚDŠ)The bedrock under the water according to the hydrogeological map of Slovakia at 1 : 50,000 (ŠGÚDŠ). It tells whether the surroundings are gravelly, sandy, clayey, muddy or rocky.

After rain the water quickly turns turbid and fish hunt more by smell.

Springs and outflows
0none within 1 km

According to the geological map: deluviálne sedimenty: prevažne hlinito-kamenité (podradne piesčito-kamenité) svahoviny a sutiny, pleistocén – holocén

The fishing district description states the bottom: bedrock, stony, fine-grained, muddy, clays and loam, which agrees with the geological map.

The map shows the bedrock geology, not the exact bottom at the spot. The actual bottom material may differ, especially where sediment has been deposited.

Aquatic insects

Aquatic insect swarming (iNaturalist)How many observations of mayflies, caddisflies and stoneflies people nearby recorded this month compared with the annual average. For fly anglers it hints at insect hatches.

Few insects November: 0.4× the average month

  • MayfliesMayflies0Mayflies: dry fly on the surface, especially at dusk.
  • CaddisfliesCaddisflies0Caddisflies: in the evening and at night by the bank; a nymph and a wet fly also work.
  • StonefliesStoneflies0Stoneflies: clean, cold streams, often already at the end of winter and in early spring.
Photo credits

0.4× the average month, 5 of 149 observations in the year, iNaturalist.

The observations are added by people from the surrounding area; they are not measurements at the water. They show when aquatic insects usually appear and are useful mainly for fly fishing.

Groundwater: measured values

Groundwater nearby (SHMÚ)Measured groundwater values from stations within 10 km of the fishing district (nitrates, harmful substances, ammonium, iron, chlorides) and the SHMÚ yearbooks.

A typical value from 1 groundwater station within 10 km of the fishing district (nearest 7.5 km), measured in 2025. Closer stations carry more weight. This is groundwater near the district, not a measurement in the watercourse itself. The standard is the limit that SHMÚ gives for the indicator (for drinking water); a value equal to the standard counts as an exceedance, as it does at SHMÚ. The label "somewhere above the standard" means that the typical value is below the standard but at least one station exceeds it; which one is shown on the tile. Fish are more sensitive to some substances than people are.

00.75

Ammonium

< 0.01mg/l

not detected

Below the limit of quantification (0.01 mg/l), standard 0.5 mg/l. 1 station.

00.75

Nitrites

< 0.01mg/l

not detected

Below the limit of quantification (0.01 mg/l), standard 0.5 mg/l. 1 station.

075

Nitrates

5.6mg/l

far below the standard

Standard 50 mg/l. 1 station, 7.5 km from the fishing district.

012

Oxygen

10.2mg/l

enough oxygen

Mark on the dial: 9 mg/l, guideline for salmonid waters. 1 station, 7.5 km from the fishing district.

020

Water temperature

8.9°C

moderate

1 station, 7.5 km from the fishing district.

510

pH

7.92

suitable for fish

1 station, 7.5 km from the fishing district.

08

Water hardness

2.97mmol/l

moderately hard

1 station, 7.5 km from the fishing district.

00.3

Iron

< 0.002mg/l

not detected

Below the limit of quantification (0.002 mg/l), standard 0.2 mg/l. 1 station.

00.075

Manganese

0.012mg/l

below the standard

Standard 0.05 mg/l. 1 station, 7.5 km from the fishing district.

0375

Chlorides

1.3mg/l

far below the standard

Standard 250 mg/l. 1 station, 7.5 km from the fishing district.

0375

Sulphates

48.5mg/l

far below the standard

Standard 250 mg/l. 1 station, 7.5 km from the fishing district.

0188

Conductivity

48.7mS/m

below the standard

Standard 125 mS/m. 1 station, 7.5 km from the fishing district.

0150%

Metals and metalloids

15% of standard

below the standard

Highest: Arsenic 1.5 µg/l (15% of the standard, 7.5 km from the fishing district). 1 station.

How it affects fish and the water
Ammonium
Ammonium ions are not very toxic in themselves, but depending on pH and temperature part of them turns into ammonia (NH₃), which damages the gills and stresses fish. The higher the pH and temperature, the more ammonia there is (Emerson et al. 1975). The repealed Directive 2006/44/EC gave a guideline of at most 0.04 mg/l of ammonium for salmonid waters and 0.2 mg/l for cyprinid waters.
Nitrites
Nitrites are toxic to fish: they pass through the gills into the blood and turn hemoglobin into methemoglobin, which does not carry oxygen, so fish "suffocate" even in oxygenated water. Salmonids are the most sensitive; chlorides in the water reduce the toxicity (Lewis and Morris 1986). Directive 2006/44/EC gave a guideline of 0.01 mg/l for salmonid waters.
Nitrates
Nitrates do not harm adult fish immediately, but they feed algae and plants and so contribute to over-fertilization and nighttime oxygen crashes. For sensitive aquatic animals (salmonids, amphibians, some invertebrates) Camargo et al. (2005) recommend keeping nitrates below 2 mg of nitrogen per liter, which is about 9 mg/l of nitrates.
Oxygen
Fish, especially salmonids, need a lot of oxygen. Directive 2006/44/EC gave a guideline of 9 mg/l for salmonid waters (in at least half of the measurements) and never less than 7 mg/l. Groundwater from deeper layers often has less of it; in the stream it is re-oxygenated only after it emerges.
Water temperature
Groundwater has an almost constant temperature throughout the year. Inflow from springs can therefore cool a stream in summer and warm it in winter, and such sections often serve as refuges for cold-water fish (Hayashi and Rosenberry 2002).
pH
Fish tolerate a pH of roughly 6 to 9 (Directive 2006/44/EC). Outside this range the gills are damaged and the toxicity of ammonia and metals changes.
Water hardness
Harder water (more calcium and magnesium) is better for fish: calcium protects the gills and reduces the toxicity of metals such as copper and zinc (Pagenkopf 1983), and keeps the pH stable. Soft water is more sensitive to metals and to acidification.
Iron
Iron is dissolved in groundwater at depth. When the water reaches the air, it oxidizes and precipitates as brown flocs that clog gills, cover gravel with eggs and invertebrates, and destroy shelters (Vuori 1995).
Manganese
Manganese is natural in deeper groundwater. For fish it tends to matter less than iron; the standard applies mainly because of the taste and color of drinking water.
Chlorides
Chlorides come from road salt, fertilizers and waste. The US EPA (1988) set 230 mg/l for long-term protection of aquatic life and 860 mg/l for short-term.
Sulphates
Sulfates are common in groundwater; they come from rocks (for example gypsum), fertilizers and mines. Together with chlorides they raise the mineralization of the water; the standard of 250 mg/l is set for drinking water.
Conductivity
Conductivity shows the total amount of dissolved salts. A higher value in groundwater is often natural (limestone, gypsum), but a sharp increase in a stream points to an inflow of salts from roads, mines or waste.
Metals and metalloids
Copper, zinc, nickel, cadmium and mercury are toxic to fish even at low concentrations, more so in soft water than in hard water (Pagenkopf 1983). The groundwater standard is set for drinking water, not for fish.

Sources

  1. Camargo, J. A., Alonso, Á., Salamanca, A. (2005): Nitrate toxicity to aquatic animals: a review with new data for freshwater invertebrates. Chemosphere 58, 1255–1267.
  2. Lewis, W. M., Morris, D. P. (1986): Toxicity of nitrite to fish: a review. Transactions of the American Fisheries Society 115, 183–195.
  3. Emerson, K., Russo, R. C., Lund, R. E., Thurston, R. V. (1975): Aqueous ammonia equilibrium calculations: effect of pH and temperature. Journal of the Fisheries Research Board of Canada 32, 2379–2383.
  4. Directive 2006/44/EC on the quality of fresh waters needing protection or improvement in order to support fish life (repealed in 2013; we give its values here only as an expert guideline).
  5. Vuori, K.-M. (1995): Direct and indirect effects of iron on river ecosystems. Annales Zoologici Fennici 32, 317–329.
  6. Pagenkopf, G. K. (1983): Gill surface interaction model for trace-metal toxicity to fishes: role of complexation, pH, and water hardness. Environmental Science & Technology 17, 342–347.
  7. U.S. EPA (1988): Ambient Water Quality Criteria for Chloride. EPA 440/5-88-001.
  8. Hayashi, M., Rosenberry, D. O. (2002): Effects of ground water exchange on the hydrology and ecology of surface water. Ground Water 40, 309–316.

Fish, wildlife, plants and hazards around the waterWildlife and hazards by the water (GBIF)Game animals, birds, plants and hazards (bear, ticks, mosquitoes, giant hogweed) that people have recorded around the water. It is not part of the fishing conditions score and is for information only.

Species that have been observed or recorded around the water. Wildlife, plants and hazards do not enter the fishing conditions score and are for information only. The name of a species leads to its page.

MallardBird

Mallard

many records
Most records: April.
About the species

The most common duck; it nests by almost every water with bankside vegetation.

Grey heronBird

Grey heron

protected speciesmany records
Most records: April.
About the species

It stands in the shallows and lies in wait for small fish. It is easy to see along the banks of ponds and slow streams.

Mute swanBird

Mute swan

protected speciesmany records
Most records: March.
About the species

A large white waterbird that nests by slow waters, reservoirs and ponds with vegetation.

Great egretBird

Great egret

protected speciesmany records
Most records: March.
About the species

A large white heron that hunts fish and frogs in the shallows. In Slovakia its numbers are rising, and in winter it can also be seen by watercourses.

Great cormorantBird

Great cormorant

many records
Most records: March.
About the species

A fish-eating bird. It nests at large reservoirs and in winter also stays on streams with open water.

DragonfliesWildlife

Dragonflies

quite a few records
Most records: June.
About the species

Predatory insect. The larvae live underwater for several months to years; adult dragonflies hunt in the air above the water.

MayfliesWildlife

Mayflies

quite a few records
Most records: June.
About the species

An insect with aquatic larvae. Adults live only briefly and hatch all at once in swarms.

Grass snakeWildlife

Grass snake

protected speciesquite a few records
Most records: May.
About the species

A harmless snake with two yellow spots on the nape. It swims well and hunts frogs, fish and newts.

Common toadWildlife

Common toad

protected speciesa few records
Most records: April.
About the species

The largest native toad. In spring it migrates to water, where it breeds.

Fire salamanderWildlife

Fire salamander

protected speciesa few records
Most records: April.
About the species

Black with yellow spots. Lives in deciduous forests by clean mountain streams; the larvae develop in the stream.

Eurasian beaverWildlife

Eurasian beaver

protected speciesa few records
Most records: March.
About the species

A herbivore that changes the stream and its banks with dams and burrows. It is protected. It creates shallows and pools where fish and insects thrive.

Eurasian otterWildlife

Eurasian otter

protected speciesa single record
Most records: April.
About the species

It hunts fish, crayfish and frogs. It is strictly protected, and its presence is considered a sign of fairly clean water with plenty of fish.

Japanese knotweedInvasive plant

Japanese knotweed

invasive speciesquite a few records
Most records: November.
About the species

An invasive herb from East Asia that forms dense stands up to three metres tall.

Broadleaf cattailPlant

Broadleaf cattail

quite a few records
Most records: July.
About the species

A wetland plant with a brown cylindrical fruiting spike.

Himalayan balsamInvasive plant

Himalayan balsam

invasive speciesquite a few records
Most records: September.
About the species

An invasive plant from the Himalayas, up to two metres tall, with pink flowers. It overgrows the banks of watercourses.

Black alderPlant

Black alder

quite a few records
Most records: July.
About the species

A riparian tree whose roots reach below the water surface.

Common duckweedPlant

Common duckweed

quite a few records
Most records: August.
About the species

A tiny floating plant that can cover the whole surface of standing water.

Common reedPlant

Common reed

quite a few records
Most records: August.
About the species

Tall grass that forms extensive reed beds around ponds and on banks.

Brown bearRisk

Brown bear

higher riskprotected speciesa single record
Most records: May.
How to protect yourself

Lives in the mountain forests of northern and central Slovakia. Near water it hunts fish and drinks.

How to protect yourself: In mountain districts move noisily, do not leave fish, entrails or bait leftovers near your tent, and store food away from where you sleep. If you see a bear, do not run, talk calmly and back away slowly. Never approach the cubs.

Giant hogweedRisk

Giant hogweed

to be reckoned withinvasive speciesa few records
Most records: June.
How to protect yourself

An invasive plant that grows along stream banks and on wet meadows. In sunlight its sap causes skin burns.

How to protect yourself: Do not touch it and do not walk through the vegetation. If the sap gets on your skin, wash it off with water and soap and protect the area from the sun. See a doctor for larger burns.

Wild boarRisk

Wild boar

to be reckoned witha few records
Most records: May.
How to protect yourself

It comes to the water to wallow and drink, mainly at dusk and at night.

How to protect yourself: A wild boar sow with piglets can be aggressive. Keep your distance, do not spend the night on a game trail and do not leave food scraps near the water.

HorsefliesRisk

Horseflies

to be reckoned witha single record
Most records: June.
How to protect yourself

Large biting flies. They are most active on hot, windless days near water and on meadows.

How to protect yourself: They sting painfully, especially in summer around midday. Light-colored clothing with long sleeves and repellent help.

Wildlife, plants and hazards: records come from observations and also reflect where observers move around; they are not density measurements or a guarantee of an encounter. They apply to the surroundings of about 35 × 55 km.

Photo credits

Animal and plant catalog

Source: GBIFUpdated 6 Nov 2026 16:12

Ground under the water: geology, faults and radon

Bedrock, watercourse and springs on the map, values at the location of the water, geomagnetic activity and earthquakes. This is information about the environment; only small hypotheses marked with a confidence level (faults and rocks, geomagnetic storm) enter the score.

The bedrock map needs JavaScript to be turned on.

The map can be panned and zoomed; the ŠGÚDŠ layers are stored on this server. © State Geological Institute of Dionýz Štúr. Base map scale 1 : 50,000 (faults and geology); radioactivity and magnetics are coarser.

Values at the water spot

Values at the water spotBedrock radon risk, uranium, thorium, potassium, gamma radiation and magnetic anomaly at a single spot by the water (marked with a dot on the map).

Radon risk of the bedrock

low

Bedrock with a low radon share.

08

Uranium (eU)

3.0ppm

common

Typical background of the rocks.

020

Thorium (eTh)

8.1ppm

around the crustal average

Natural background of the rocks.

04

Potassium (K)

1.50%

below the crustal average

Natural background of the rocks.

0150

Gamma radiation

57nGy/h

around the world average

Natural background of the bedrock.

SVJZ

Magnetic anomaly (ΔT)

-82nT

below the average of the surroundings

Deviation of the magnetic field from the average of the surroundings.

The values apply to a single spot (marked with a dot on the map), not as an average of the whole watercourse or river basin. Radon is a natural tracer in groundwater; the map does not include radon in water, only the bedrock risk.

Mark on the dial: the average of the upper continental crust (uranium 2.7 ppm, thorium 10.5 ppm, potassium 2.3%; Rudnick and Gao 2003) and the world average of the natural outdoor dose 59 nGy/h (UNSCEAR 2000). The needle does not swing towards “good” or “bad”; it only shows where the value lies.

Elevated uranium or radon is only information about the rock. It has no proven significance for bites; it helps to read what bedrock the water comes from.

Faults and springs

Faults and springsThe distance to the nearest tectonic fault on the geological map and the number of springs nearby. Fissure groundwater flows out along faults.
250 m1 km3 km8 km

Nearest fault

up to 1 km

fault nearby

Tectonic fault on the geological map.

Springs and outflows

0

none marked

None within 1 km.

covered by younger sediments

Fissure groundwater flows out of the bedrock along faults and at springs. It tends to be cooler in summer and warmer in winter than the water in the stream, so according to anglers' experience fish stay near such places in extreme weather (summer and winter islands of a more suitable temperature).

However, fresh fissure water can have little oxygen. This is anglers' experience, not a phenomenon measured at this fishing district.

Faults are from the geological map at 1 : 50,000. Springs come from a hydrogeological map that covers only some regions, so zero does not mean there are no springs there.

Geology nearby: rock, water, sediments, boreholes

Geology and geochemistry around the waterRock under the water, composition of water and sediments according to the atlases, radioactivity, geothermal potential, boreholes, old mine workings, deposits, burdens, landslides and gold in sediments, from ŠGÚDŠ maps and registers.
Halda objektu č.93 – 5 – spoil heap (90 m from the water)Vodná štôlňa – 2 – adit (110 m from the water)Liliom št. – 2 – adit (250 m from the water)Halda objektu č.122 – 5 – spoil heap (270 m from the water)Königseg šachta – 1 – shaft (290 m from the water)Piarg šachta – 1 – shaft (510 m from the water)Kuchajda št. – 2 – adit (520 m from the water)Viktória št. – 2 – adit (520 m from the water)Halda objektu č.120 – 5 – spoil heap (530 m from the water)Vodná štôlňa – 2 – adit (540 m from the water)Halda objektu č.31 – 5 – spoil heap (570 m from the water)Vodná štôlňa – 2 – adit (580 m from the water)Vodná štôlňa – 2 – adit (670 m from the water)Halda objektu č.114 – 5 – spoil heap (670 m from the water)Halda objektu č.118 – 5 – spoil heap (680 m from the water)Pingové pole – 4 – pinge (mining subsidence pit), line of pinge pits (690 m from the water)Halda objektu č.29 – 5 – spoil heap (690 m from the water)Halda objektu č.116 – 5 – spoil heap (690 m from the water)Kutacia štôlňa – 2 – adit (700 m from the water)Vodná štôlňa – 2 – adit (710 m from the water)Maria Empfangnis št. – 2 – adit (720 m from the water)Kutacia štôlňa – 2 – adit (730 m from the water)Pingové pole – 4 – pinge (mining subsidence pit), line of pinge pits (750 m from the water)Leopold šachta – 1 – shaft (750 m from the water)Kristína šachta – 1 – shaft (750 m from the water)Denná št – 2 – adit (770 m from the water)Magdaléna šachta – 1 – shaft (780 m from the water)Vodná štôlňa – 2 – adit (840 m from the water)Halda obkejtu č.106 – 5 – spoil heap (850 m from the water)Halda objektu č.87 – 5 – spoil heap (860 m from the water)Vodná štôlňa – 2 – adit (880 m from the water)Karol šachta – 1 – shaft (880 m from the water)Vodná štôlňa – 2 – adit (920 m from the water)Halda objektu č.85 – 5 – spoil heap (960 m from the water)Halda objektu č.83 – 5 – spoil heap (1.0 km from the water)Mária Empfegnis štôlňa – 2 – adit (1.0 km from the water)Vodná štôlňa – 2 – adit (1.1 km from the water)Halda objektu č.10 – 5 – spoil heap (1.1 km from the water)Felix št. – 2 – adit (1.1 km from the water)Dezider št. – 2 – adit (1.1 km from the water)Vetrací komín – 1 – shaft (1.1 km from the water)Halda objektu č.112 – 5 – spoil heap (1.1 km from the water)Vodná štôlňa – 2 – adit (1.2 km from the water)Halda objektu č.104 – 5 – spoil heap (1.2 km from the water)Halda objektu č.91 – 5 – spoil heap (1.2 km from the water)Karol štôlňa – 2 – adit (1.2 km from the water)Halda objektu č.9 – 5 – spoil heap (1.2 km from the water)Vodná štôlňa – 2 – adit (1.2 km from the water)Bieber dedičná št. – 2 – adit (1.2 km from the water)Ladislav štôlňa – 2 – adit (1.2 km from the water)Halda objektu č.7 – 5 – spoil heap (1.2 km from the water)Pavel št – 2 – adit (1.3 km from the water)Halda objektu č.102 – 5 – spoil heap (1.3 km from the water)Wolf šachta – 1 – shaft (1.3 km from the water)Vodná štôlňa – 2 – adit (1.3 km from the water)Halda objektu č.5 – 5 – spoil heap (1.3 km from the water)Osvald štôlňa – 2 – adit (1.3 km from the water)Alexander št. – 2 – adit (1.3 km from the water)Halda objektu č.100 – 5 – spoil heap (1.4 km from the water)Vodná štôlňa – 2 – adit (1.4 km from the water)Vodná štôlňa – 2 – adit (1.4 km from the water)Vodná štôlňa – 2 – adit (1.4 km from the water)Vodná štôlňa – 2 – adit (1.4 km from the water)Halda objektu č.110 – 5 – spoil heap (1.4 km from the water)Halda objektu č.89 – 5 – spoil heap (1.4 km from the water)Halda objektu č.108 – 5 – spoil heap (1.4 km from the water)Halda objektu č.3 – 5 – spoil heap (1.4 km from the water)Urban št. – 2 – adit (1.4 km from the water)Kordian štôlňa – 2 – adit (1.5 km from the water)Vodná štôlňa – 2 – adit (1.5 km from the water)Kilian št. – 2 – adit (1.5 km from the water)Halda objektu č.81 – 5 – spoil heap (1.5 km from the water)Ferdinand šachta – 1 – shaft (1.5 km from the water)Ondrej št. – 2 – adit (1.6 km from the water)Halda objektu č.53 – 5 – spoil heap (1.7 km from the water)Ján šachta – 1 – shaft (1.7 km from the water)Dorota št. – 2 – adit (1.7 km from the water)Halda k objektu č.95 – 5 – spoil heap (1.7 km from the water)I.Bakali št. – 2 – adit (1.7 km from the water)Halda objektu č.79 – 5 – spoil heap (1.7 km from the water)Vodná štôlňa – 2 – adit (1.7 km from the water)Kutacia pinga – 4 – pinge (mining subsidence pit), line of pinge pits (1.7 km from the water)Vodná štôlňa – 2 – adit (1.7 km from the water)Roveň šachta – 1 – shaft (1.7 km from the water)Vodná štôlňa – 2 – adit (1.8 km from the water)Halda objektu č.51 – 5 – spoil heap (1.8 km from the water)Halda – 5 – spoil heap (1.8 km from the water)Halda objektu č.17 – 5 – spoil heap (1.8 km from the water)Kutacia štôlňa – 2 – adit (1.8 km from the water)II.Bakali št. – 2 – adit (1.8 km from the water)Halda – 5 – spoil heap (1.8 km from the water)Halda – 5 – spoil heap (1.8 km from the water)Bezmenná štôlňa – 2 – adit (1.8 km from the water)Maximilián šachta – 1 – shaft (1.9 km from the water)Prekop na Bakali komín – 2 – adit (1.9 km from the water)Vodná štôlňa – 2 – adit (1.9 km from the water)Prokop št. – 2 – adit (1.9 km from the water)Halda k objektu č.98 – 5 – spoil heap (1.9 km from the water)Ludvik št. – 2 – adit (1.9 km from the water)Vodná šachta – 1 – shaft (1.9 km from the water)Pingy – 4 – pinge (mining subsidence pit), line of pinge pits (1.9 km from the water)Halda objektu č.1 – 5 – spoil heap (2.0 km from the water)Imrich štôlňa – 2 – adit (2.0 km from the water)III.Bakali št. – 2 – adit (2.0 km from the water)Terézia šachta – 1 – shaft (2.0 km from the water)Prepadlina – 6 – other type of object (2.1 km from the water)Komín – 1 – shaft (2.1 km from the water)Amalia šachta – 1 – shaft (2.1 km from the water)Prepadlisko – 6 – other type of object (2.1 km from the water)Vodná št. – 2 – adit (2.1 km from the water)Kresanica – 2 – adit (2.1 km from the water)Matej št. – 2 – adit (2.1 km from the water)Prepadlisko – 6 – other type of object (2.1 km from the water)Anna šachta – 1 – shaft (2.2 km from the water)Vodná štôlňa – 2 – adit (2.2 km from the water)Klinger krátka štôlňa – 2 – adit (2.2 km from the water)Kutacia štôlňa – 2 – adit (2.2 km from the water)Adalbert štôlňa – 2 – adit (2.2 km from the water)št. – 2 – adit (2.2 km from the water)Halda objektu č.77 – 5 – spoil heap (2.2 km from the water)Horná Rozália št. stará – 2 – adit (2.2 km from the water)Halda objektu č.63 – 5 – spoil heap (2.2 km from the water)Horná Rozália št. nová – 2 – adit (2.2 km from the water)Halda objektu č.13 – 5 – spoil heap (2.2 km from the water)Mária št. – 2 – adit (2.2 km from the water)št. – 2 – adit (2.2 km from the water)Klement štôlňa – 2 – adit (2.2 km from the water)Halda objektu č.15 – 5 – spoil heap (2.2 km from the water)št. – 2 – adit (2.2 km from the water)Handstadt št. – 2 – adit (2.3 km from the water)Štôlňa 3.obzor – 2 – adit (2.3 km from the water)Klinger Dlhá štôlňa – 2 – adit (2.3 km from the water)Štôlňa 2.obzor – 2 – adit (2.3 km from the water)Terézia št. – 2 – adit (2.3 km from the water)Vetracia šachta Frant.dedič.št. – 1 – shaft (2.3 km from the water)Halda objektu č.27 – 5 – spoil heap (2.4 km from the water)Weiden šachta – 1 – shaft (2.4 km from the water)Teofil št. – 2 – adit (2.4 km from the water)št. – 2 – adit (2.4 km from the water)František št. – 2 – adit (2.4 km from the water)Halda objektu č.49 – 5 – spoil heap (2.5 km from the water)Dolná Gedeon št. – 2 – adit (2.5 km from the water)Albert šachta – 1 – shaft (2.5 km from the water)Štefan šachta – 1 – shaft (2.5 km from the water)Katalin štôlňa – 2 – adit (2.5 km from the water)Glück št. – 2 – adit (2.5 km from the water)Halda objektu č.25 – 5 – spoil heap (2.5 km from the water)Halda objektu č.47 – 5 – spoil heap (2.5 km from the water)Dolná Rozália št. stará – 2 – adit (2.5 km from the water)Dolná Rozália št. nová – 2 – adit (2.5 km from the water)Halda objektu č.9 – 5 – spoil heap (110 m from the water)Liliom št. – 2 – adit (310 m from the water)11. obzor Leopold šachty – 2 – adit (440 m from the water)8. obzor Piarg šachty – 2 – adit (460 m from the water)Vodná št. – 2 – adit (500 m from the water)Kuchajda št. – 2 – adit (530 m from the water)Maria Empfangnis št. – 2 – adit (530 m from the water)Viktória št. – 2 – adit (550 m from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (560 m from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (580 m from the water)10. obzor Piarg šachty – 2 – adit (640 m from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (670 m from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (700 m from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (700 m from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (710 m from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (720 m from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (730 m from the water)Ladislav štôlňa – 2 – adit (830 m from the water)Halda objektu č.15 – 5 – spoil heap (890 m from the water)Halda objektu č.5 – 5 – spoil heap (910 m from the water)5. obzor Magdaléna šachty – 2 – adit (970 m from the water)Felix št. – 2 – adit (1.1 km from the water)Dezider št. – 2 – adit (1.1 km from the water)Osvald štôlňa – 2 – adit (1.1 km from the water)Pyroch obzor – 2 – adit (1.1 km from the water)Klement štôlňa – 2 – adit (1.1 km from the water)Pavel št – 2 – adit (1.2 km from the water)Alexander št. – 2 – adit (1.2 km from the water)Bieber dedičná št. – 2 – adit (1.2 km from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (1.2 km from the water)Denná št – 2 – adit (1.2 km from the water)Karol štôlňa – 2 – adit (1.2 km from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (1.2 km from the water)7. obzor Piarg šachty – 2 – adit (1.3 km from the water)Halda objektu č.13 – 5 – spoil heap (1.3 km from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (1.3 km from the water)Adalbert štôlňa – 2 – adit (1.4 km from the water)Urban št. – 2 – adit (1.4 km from the water)Halda objektu č.7 – 5 – spoil heap (1.4 km from the water)Kutacia štôlňa – 2 – adit (1.4 km from the water)7. obzor (Štiavnica) – 2 – adit (1.4 km from the water)Halda objektu č.17 – 5 – spoil heap (1.4 km from the water)9. obzor (Kristína šachta) – 2 – adit (1.4 km from the water)Ondrej št. – 2 – adit (1.4 km from the water)Halda objektu č.3 – 5 – spoil heap (1.5 km from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (1.5 km from the water)VIII. obzor (Hodruša) – 2 – adit (1.5 km from the water)XII. obzor (Hodruša) – 2 – adit (1.5 km from the water)Kilian št. – 2 – adit (1.5 km from the water)X. obzor (Hodruša) – 2 – adit (1.7 km from the water)Dorota št. – 2 – adit (1.7 km from the water)Ochsenkopf prekop (Hodruša) – 2 – adit (1.7 km from the water)I.Bakali št. – 2 – adit (1.7 km from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (1.7 km from the water)Mária Empfegnis štôlňa – 2 – adit (1.7 km from the water)XI. obzor (Hodruša) – 2 – adit (1.7 km from the water)Kordian štôlňa – 2 – adit (1.8 km from the water)II.Bakali št. – 2 – adit (1.8 km from the water)Matej št. – 2 – adit (1.8 km from the water)Prokop št. – 2 – adit (1.8 km from the water)Prekop na Bakali komín – 2 – adit (1.8 km from the water)Halda objektu č.10 – 5 – spoil heap (1.8 km from the water)6. obzor Maximilian šachty – 2 – adit (1.9 km from the water)8. obzor Maximilian šachty – 2 – adit (1.9 km from the water)3. obzor Maximilian šachty – 2 – adit (1.9 km from the water)Medzipatro (Hodruša) – 2 – adit (1.9 km from the water)Ludvik št. – 2 – adit (1.9 km from the water)III.Bakali št. – 2 – adit (2.0 km from the water)Bakali prekop (Hodruša) – 2 – adit (2.0 km from the water)Pingový ťah – 4 – pinge (mining subsidence pit), line of pinge pits (2.0 km from the water)V. obzor (Hodruša) – 2 – adit (2.0 km from the water)Horná Rozália št. nová – 2 – adit (2.0 km from the water)1. obzor Maximilian šachty – 2 – adit (2.1 km from the water)IX. obzor (Hodruša) – 2 – adit (2.1 km from the water)Vodná št. – 2 – adit (2.1 km from the water)Handstadt št. – 2 – adit (2.1 km from the water)Horná Gedeon št.-Mária št. Horná Gedeon št. – 2 – adit (2.1 km from the water)VII. obzor (Hodruša) – 2 – adit (2.2 km from the water)Halda objektu č.1 – 5 – spoil heap (2.2 km from the water)Vodná štôlňa – 2 – adit (2.2 km from the water)Štiavnické Bane – Polymetallic ores (430 m from the water)Štivnické bane – Piarg – Polymetallic-precious metal ores (860 m from the water)Hodruša – Myšia hora – Polymetallic ores (1.4 km from the water)Hodruša – Rozália baňa – Iron ores (2.1 km from the water)Rozália baňa – PIŽ – Polymetallic ores (2.2 km from the water)Hodruša . Ochsenkopf, Amália, Bakali, Rozália, Z – Polymetallic-precious metal ores (2.8 km from the water)Banská Štiavnica – Polymetallic-precious metal ores (3.1 km from the water)Banská Štiavnica – Emil a Alžbeta šachta – Polymetallic ores (3.2 km from the water)Banská Štiavnica – Grüner žily – Polymetallic-precious metal ores (3.3 km from the water)Banská Hodruša I. – Gold ores (3.5 km from the water)Banište – Gold-silver ores (3.6 km from the water)Hodruša – Laura, Dolné jazero – Iron ores (3.8 km from the water)Vysoká – Šementlov – Copper ores (4.2 km from the water)Hodruša – Všechsvätých, Jozef, Umbruch a Bärenle – Gold-silver ores (4.6 km from the water)Banská Štiavnica – Šobov – Gold ores (4.7 km from the water)Hodruša – Katarína, Anton, Alžbeta, Matyáš, Bren – Gold-silver ores (4.9 km from the water)Štiavnické Bane – none (710 m from the water)Stará Kremnička – none (840 m from the water)Štiavnické Bane – none (1.1 km from the water)Banská Štiavnica – HR-1 – non-spa (4.2 km from the water)Vyhne – HGV-3 – non-spa (4.6 km from the water)Voznica – R-3 – non-spa (6.5 km from the water)Lukavica – Žarnovica – LKC-4 – non-spa (9.1 km from the water)Vyhne – H-1 – non-spa (9.3 km from the water)Vyhne – H-2 – non-spa (9.3 km from the water)d3 (3.7 km from the water)c2 (7.8 km from the water)c1 (7.9 km from the water)c1 (8.5 km from the water)c2 (8.7 km from the water)d1 (8.9 km from the water)d1 (9.2 km from the water)c1 (9.5 km from the water)d1 (9.9 km from the water)Vyhne (7.1 km from the water)Banská Hodruša – olovené a zinkové (polymetalické) rudy (2.6 km from the water)Banská Hodruša I – olovené a zinkové (polymetalické) rudy (2.6 km from the water)Banská Štiavnica – Pb, Zn, Cu, Au, Ag – olovené a zinkové (polymetalické) rudy (3.0 km from the water)Banská Hodruša I – olovené a zinkové (polymetalické) rudy (3.5 km from the water)Banská Štiavnica I – Šobov – quartzite (4.7 km from the water)Banská Hodruša I – olovené a zinkové (polymetalické) rudy (2.4 km from the water)Banská Hodruša – olovené a zinkové (polymetalické) rudy (2.4 km from the water)Banská Štiavnica – Pb, Zn, Cu, Au, Ag – olovené a zinkové (polymetalické) rudy (3.0 km from the water)Vysoká – copper ores (4.2 km from the water)Banská Štiavnica I – Šobov – quartzite (4.7 km from the water)Banská Hodruša I – olovené a zinkové (polymetalické) rudy (2.9 km from the water)Vyhne – Banky – olovené a zinkové (polymetalické) rudy (5.0 km from the water)Vyhne – Banky – gold ores (5.0 km from the water)Štiavnické Bane – Skalka – building stone – andesite (800 m from the water)Vrt B-1 – polymetallic ores, Ag ores (1.3 km from the water)Piarg – lom Gumanina – building stone – andesite (1.6 km from the water)žily Ochsenkopf, Martiny, Leopoldi, Urban, Amáli – polymetallic ores, Ag ores, Cu ores (1.9 km from the water)Podsitnianska – Štefultov – building stone – andesite (2.1 km from the water)Banská Hodruša žila Rozália – polymetallic ores (2.4 km from the water)Banská Štiavnica – Klinger – building stone – andesite (2.7 km from the water)Ilija I – building stone – andesite (2.7 km from the water)Banská Hodruša I – Au ores, Ag ores (2.8 km from the water)Lahkovits žila (Banská Hodruša – Jozef Calasant) – pyrite (3.1 km from the water)Banská Štiavnica I – building stone – andesite (3.6 km from the water)Banská Hodruša – Medená žila – Cu ores, Pb ores, Ag ores (3.6 km from the water)Banská Štiavnica – Au ores, Ag ores (3.7 km from the water)Banská Štiavnica II – building stone – andesite (3.8 km from the water)Banská Štiavnica – Červená studňa – building stone – andesite (3.9 km from the water)Banská Hodruša – drahé a ozdobné kamene – skarn (4.0 km from the water)Ilija II – building stone – andesite (4.1 km from the water)Banská Štiavnica – Kalvária I – building stone – dacite (4.2 km from the water)Vysoká – brick raw materials (5.0 km from the water)Banská Hodruša I – gold and silver ores (2.4 km from the water)Banská Hodruša – polymetallic ores (2.8 km from the water)Kopanice – gold and silver ores (3.8 km from the water)Vysoká – Šementlov – copper ores (4.2 km from the water)Banská Štiavnica – polymetallic ores (4.4 km from the water)Banská Hodruša – Schopfer – gold and silver ores (5.0 km from the water)Tanád – volcanic rocks (2.3 km from the water)Ilija – volcanic rocks (3.4 km from the water)Sitno – volcanic rocks (3.6 km from the water)Kociha – mineralogy (4.4 km from the water)Banská Štiavnica – mineralogy (4.5 km from the water)Hodruša-Hámre – mining (4.5 km from the water)Banská Štiavnica-Šobov – volcanic rocks (4.7 km from the water)Banská Štiavnica – volcanic rocks (4.7 km from the water)– Landslides (1.7 km from the water)– Block fields (2.3 km from the water)– Landslides (2.5 km from the water)– Block fields + landslides (2.6 km from the water)– Landslides (2.6 km from the water)BANSKA HODRUSA – Block fields (2.8 km from the water)– Landslides (2.8 km from the water)– Block fields + landslides (2.9 km from the water)– Landslides (3.0 km from the water)Štiavnické Bane – monitoring borehole (170 m from the water)Štiavnické Bane – monitoring borehole (560 m from the water)Štiavnické Bane – monitoring borehole (560 m from the water)Hodruša – monitoring borehole (570 m from the water)Štiavnické Bane – monitoring borehole (580 m from the water)Štiavnické Bane – structural borehole with thermal water, minerálnou v (750 m from the water)Banská Štiavnica – úzkoprofilový vrt s obyčajnou pitnou a ú (860 m from the water)Štiavnické Bane – structural borehole with thermal water, minerálnou v (1.3 km from the water)Štiavnické Bane – úzkoprofilový vrt s obyčajnou pitnou a ú (1.4 km from the water)Štiavnické Bane – úzkoprofilový vrt s obyčajnou pitnou a ú (1.4 km from the water)Richnava – úzkoprofilový vrt s obyčajnou pitnou a ú (1.4 km from the water)Počúvadlo – širokoprofilový vrt (Ø vŕtania nad 600 m (2.8 km from the water)5 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.

Rock under the water

Young sediments100% of the water line

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

510

Water according to the atlas

pH 7.3modelled estimate

water type Ca–HCO₃–SO₄

Mineralisation 197 mg/l, soft water (6.1 °dH). Interpolation of measurements from the Geochemical Atlas of Slovakia, not a measurement in the stream.

Elements in river sediment

1 from 15elements in the top 10 %

highest: Lead 35.6 mg/kg

Position of the highest-ranked element among the sample points on streams in Slovakia: percentile 91. Interpolation of the Geochemical Atlas of river sediments.

1 km2 km45 °C65 °C

Heat underfoot

45°C at 1,000 m depth

heat flow 115 mW/m²

At a depth of 2,000 m about 65 °C (increase of 20 °C per kilometre). Atlas of Geothermal Energy of Slovakia.

Old mine workings

324objects within 3 km

mined: Au, Zn, Pb, Cu, Ag

Nearest: Halda objektu č.93 (spoil heap), 90 m from the water.

Boreholes and groundwater analyses

56boreholes within 3 km

150 water analyses nearby

Of these, 56 have an archive report from Geofond. The boreholes are hydrogeological, geological, engineering-geological and other.

0 °C120

Geothermal energy

46°C at the wellhead

6 geothermal boreholes within 10 km

Warmest: Banská Štiavnica – HR-1, 4.2 km from the water.

Environmental burdens and landfills

3sites within 3 km

3 landfills

No environmental burden is registered within 3 km; landfills are only recorded.

Deposits and ore occurrences

54records within 5 km

13 deposits, 41 ore occurrences

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

Landslides and slope deformations

9areas within 3 km

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

The data come from registers, maps and atlases of the State Geological Institute of Dionýz Štúr and describe the environment around the water. Proximity of a mine working or burden does not mean the water is polluted. The chemistry of water and sediments is a modelled estimate from interpolated maps of the Geochemical Atlas of Slovakia, not current monitoring or a measurement in the stream.

Detailed geology and geochemistry of the whole stream: rock under the water, water composition, elements in sediments, radiation, geothermal potential, metals, gold in sediment, mine workings, boreholes with analyses.

Geomagnetic activity

Geomagnetic activity (Kp)The planetary Kp index (0 to 9) measures the fluctuation of the Earth's magnetic field. From 5 it counts as a geomagnetic storm. The last 48 hours and a forecast for 24 hours are shown.
09

Kp index

3.0from 9

quiet field

Latest measurement (9 Nov 2026 01:00). The dot on the dial is the highest forecast for the next 24 hours.

Highest forecast Kp in the next 24 hours: 4.7 (unsettled field).

Kp (0 to 9) measures the fluctuation of the Earth's magnetic field caused by the solar wind. From 5 it counts as a geomagnetic storm. Fish, especially salmonids and eels, sense the magnetic field. That their bites depend on Kp has not been shown, though: these are anglers' observations and hypotheses.

The value is the same for the whole of Slovakia. It enters the activity score only during a strong geomagnetic storm (a hypothesis, −1 to −2 points).

Earthquakes nearby

Earthquakes nearbyTremors recorded within 150 km of the water in the last 30 days (GFZ GEOFON catalog).
S

Earthquakes nearby

0tremors

no tremors

Within 150 km over the last 30 days (from magnitude 0.0).

According to angling lore, fish (especially catfish and eels) react restlessly to tremors beforehand or stop biting. This is not reliably proven, and with weak tremors it is coincidence. People mostly do not notice deeper tremors from the Carpathians (for example near Komárno and Dobrá Voda) at all.

The GEOFON catalog is global; weak tremors near Slovakia may not all be in it. It is not counted in the activity score.

Data: © ŠGÚDŠ (geological, geophysical and hydrogeological maps), NOAA SWPC (Kp index), GFZ GEOFON (earthquakes). A link between the geomagnetic field, tremors or radon and fish bites has not been reliably proven, so they are not counted in the activity score. The method is described in Methodology.

From space: what the Copernicus satellites show

Sentinel-2 (optical) and Sentinel-1 (radar), updated roughly every 6 days

Satellite data for this fishing district is being prepared. It is usually ready within a few minutes; refresh the page later.

Historical images

Changes in the surroundings and nature from 2018 to 2024: how the banks, vegetation and landscape around the water change. The images switch automatically; you can also browse them by hand.

Aerial image of fishing district VN Evička from 2018
2018imaged 3 Jul 2018
Aerial image of fishing district VN Evička from 2021
2021imaged 7 Jul 2021
Aerial image of fishing district VN Evička from 2024
2024imaged 27 Jul 2024

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.