Fishing district

VN Ľuboreč

CarpNo. 3-5360-1-1VN ĽuborečHron basin
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Fishing district boundaries: Vodná plocha nádrže medzi obcami Ľuboreč a Závada.

maximum depth
13m
fishing district length
2.3km
district
Lučenec
region
Banská Bystrica Region
Aerial image of fishing district VN Ľuboreč with the line highlighted
Blue line: course of the fishing district (approximate). Orthophoto mosaic of Slovakia © GKÚ Bratislava, CC BY 4.0Google Maps

Fishing district VN Ľuboreč at a glance

VN Ľuboreč is carp fishing district no. 3-5360-1-1. It lies in Lučenec district (Banská Bystrica Region). According to the bed model, the surface at full level covers 66.1 ha and the greatest depth is 13 m. The fishing district is managed by MsO SRZ Lučenec

Game fish of the fishing district (3):

By the water today

Is it worth going today? Conditions score, which species are biting today, the best window of the day, weather, pressure, sun, moon and solunar windows
Najlepšie okno15:00–17:00Voda≈ 5,0 °C25

The bite score for fishing district VN Ľuboreč is calculated for 10 game fish species from the weather right at the water, water temperature, light and air pressure. The forecast applies to the location 48.294° N, 19.508° E.

By the water now

Conditions score25 / 100Best window15:00–17:00

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…

What's biting today

The conditions score is based on how well the water temperature suits the species of the fishing district that may be caught today. Here it is broken down by species: at a water temperature of 5.0 °C some do better and others worse than average. The number is an estimate of conditions for the species, not a promise of a bite.

  1. 36
    European perchWater at 5.0 °C is below its optimum of 12 to 24 °C. Typical for this water.best at 15:00 (44)
  2. 34
    BleakWater at 5.0 °C is below its optimum of 12 to 24 °C. Observed at the water.best at 15:00 (42)
  3. 34
    RoachWater at 5.0 °C is below its optimum of 12 to 24 °C. Typical for this water.best at 15:00 (42)
  4. 25
    Northern pikeWater at 5.0 °C is below its optimum of 10 to 21 °C. Stocked.best at 15:00 (34)
  5. 25
    Common breamWater at 5.0 °C is below its optimum of 14 to 24 °C. Typical for this water.best at 15:00 (33)
  6. 22
    AspWater at 5.0 °C is below its optimum of 12 to 24 °C. Typical for this water.best at 15:00 (30)
  7. 22
    Wels catfishWater at 5.0 °C is below its optimum of 18 to 28 °C, it hunts most actively at dusk and at night. Typical for this water.best at 15:00 (30)
  8. 22
    Zander (pikeperch)Water at 5.0 °C is below its optimum of 14 to 25 °C, it hunts most actively at dusk and at night. Typical for this water.best at 15:00 (30)
  9. 21
    Common carpWater at 5.0 °C is below its optimum of 18 to 28 °C. Stocked.best at 15:00 (29)
  10. 18
    TenchWater at 5.0 °C is below its optimum of 18 to 26 °C. Typical for this water.best at 15:00 (26)

A species differs from the conditions score by how much better the water temperature suits it than the average species of the fishing district (temperature requirements from FishBase, species weighted by catches, stocking and observations), and by light and turbidity: zander, wels catfish, eel and burbot hunt at dusk and in murky water, pike, perch, asp and trout by sight (Lester et al. 2004, Sweka and Hartman 2001). Wind, precipitation, water level and oxygen are the same for all species.

Air-3 °CPressure1 028 hPa

Weather and forecast for fishing district VN Ľuboreč

Hour by hour, pressure and the next few days

Weather and forecast

Loading data…

Sunrise6:49Sunset16:03

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
  • Month
  • Golden hour
  • Major period
  • Minor period

Sun

  • Dawn06:15
  • Sunrise06:49
  • Sunset16:03
  • Dusk16:37

The day lasts 9 h 15 min.

MonthMoon 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.

Waxing crescent29% illuminated
  • Moonrise12:06
  • Moonset20:53

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

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.

  • Major solunar period03:03–05:03
  • Golden hour (morning)06:19–07:49
  • Minor solunar period11:36–12:36
  • Golden hour (evening)15:03–16:33
  • Major solunar period15:26–17:26
  • Minor solunar period20:23–21:23

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.

Rules and permits

Am I allowed to fish here? Closed seasons, fishing hours, size limits, daily limit, permit price, where to buy it, contacts and the manager
Water typeCarpOrganizationMsO SRZ Lučenec

Fishing district VN Ľuboreč is classed as carp waters. Permits for fishing district VN Ľuboreč are issued by MsO SRZ Lučenec

Water typeKaprový

Law and fishing rules at fishing district VN Ľuboreč

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 fishing district which case your fishing 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 fishing 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 fishing 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 fishing 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 fishing 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, sichel) 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 fishing district user may raise the size, so look for the valid value in the permit and the fishing regulations.

Show as a list

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 bleak, goldfish, 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 fishing district number (no. 3-5360-1-1); 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).

Who manages fishing district VN Ľuboreč

The manager, the user and the organization that issues permits

Who manages the fishing district

Manager
SVP, š.p. OZ Banská Bystrica
Fishing district user
SRZ
Organization
MsO SRZ Lučenec (Municipal SRZ organization)
Area
Central Slovakia
Purpose
Fishing district

Where to fish

Fishing district map, access and parking, spots by the water, tributary mouths, hazardous places and surrounding terrain
Length2.3 kmDistrictLučenec

The center of fishing district VN Ľuboreč is at coordinates 48.29432, 19.50817. The fishing district is 2.3 km long.

Map of fishing district VN Ľuboreč

Course of the water, access, parking and spots marked by the organization

48.29432, 19.50817 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.

Spots by the water, tributary mouths and gradient

Where you can reach the water, where tributaries join and where there is danger

Fishing spot finder

Choose a fish species and the 3D model of the reservoir shows where it is most likely to be right now: by depth, bed, water temperature, light, season and time of day. The spots are an estimate from the environment, not the position of fish.

Find fishing spots

Elevation profile: reservoir

Elevation profileHow the altitude of the watercourse changes downstream. It is calculated from a digital relief model (tens of meters), not from a water-level measurement, so it is approximate, especially for narrow streams.

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

2202252302352400.0 km0.5 km1.0 km
Terrain elevation profile along the fishing district (Reservoir): from 237 to 225 m a.s.l. over 1.4 km.
Terrain height along the fishing district, from the start of the line (left) to its end
Approximate water level
225 m a.s.l.
Lowest point of the profile
225 m a.s.l.
Highest point of the profile
237 m a.s.l.

The height comes from a relief model and is approximate (error of a few meters).

Source: Open Topo Data (eudem25m)Updated 4 Nov 2026 19:22

Terrain in 3D

Loading the 3D terrain model…

Accommodation, food and services by the water

Accommodation, restaurants, services, fishing tackle and fish sales near the fishing district. Do you run a business here? Add your listing
Listing by the waterod 4,17 € mesačne

Do you run a business by this water?

Add accommodation, a restaurant, a service, a shop or fish sales. Anglers will see it on the VN Ľuboreč page and at other fishing districts nearby, from €4.17 a month.

Do you have your own pond or gravel pit? Add a private fishing district with its own page, fishing spot reservations and permit sales.

Reservoir bed in 3D

Depth map and 3D bed model, fishing spot finder by fish species, reservoir cross-section, volume and area at different water levels, bed composition and bedrock
Maximum depth13 mAverage depth4.8 m68

According to the bed model, fishing district VN Ľuboreč has a greatest depth of 13 m and a mean depth of 4.8 m. At full level the surface covers 66.1 ha and the water volume is 3.19 million m³. Depths are based on maps made before flooding.

Reservoir bed

Map from before flooding

Loading the 3D model of the bed…

Cross-section of the reservoir

Height is measured from the full level. The thicknesses of the bedrock layers are illustrative; the map shows the surface only.

Hypsographic curve

How the area and volume of water change as the level drops.

Bed and bedrock

Bed by zones of erosion and sediment deposition, bedrock from the geological map.

The bed is the original terrain under the reservoir according to spot heights on topographic maps from the time before flooding. Mud has settled on it since the reservoir was filled, so actual depths tend to be 1 to 2 m smaller. It is not suitable for navigation or diving.

  • The bed is the original terrain under the reservoir according to spot heights on topographic maps made before flooding.
  • The district's fishing regulations state a maximum depth of 4 m; the original valley on the map is deeper. The reservoir is silting up, so today's bed may lie higher than the terrain from the map.
68

Fishing spots index

Varied water

How many different habitats the reservoir offers: drop-offs, shallows, depths, bed and old channels. A higher number means more places where fish hold, not more fish.

  • Drop-offs and breaks of the bed12% of area55

    There are drop-offs here, but you have to look for them, especially at the old channels.

  • Variety of depthsmost in 13 m87

    Shallows, medium depths and deep water are evenly represented; fish find a place in every season.

  • Shallows up to 3 m36% of area100

    The share of shallows is just right: spring and evening spots by the bank with depth within reach.

  • Variety of the bedmud 87%, gravel 13%24

    The bed is mostly of one kind; the differences come from depth and drop-offs.

  • Old channels and tributaries2.6 km of channels, 2 watercourses53

    Flooded channels are the routes along which fish move, and their edges are among the most reliable spots in the reservoir.

  • Aquatic vegetation14% of area100

    Vegetation gives cover to pike, tench and fry; the edge of the vegetation is worth fishing.

The bed is modeled from spot heights from before flooding.

Bed and bedrock according to maps

What the bed and banks are made of: rock, sediments and their effect on the water

Bed 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.

  • Gravels 33%
  • Clays and loams 67%
Springs and outflows
0none within 1 km

According to the geological map: fluviálne sedimenty: litofaciálne nečlenené nivné hliny, alebo piesčité až štrkovité hliny dolinných nív a nív horských potokov, holocén

The fishing district description states the bottom: gravel, sand; the geological map shows something different, and the fishing district description is more precise.

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.

Fish and catches

Which fish live here, what has been caught here, what is stocked, which species the water suits and what the fish eat
Documented species3Dnes najlepšieOstriež zelenkavý

We record 3 game fish species in fishing district VN Ľuboreč. Of these, 2 species are in the stocking plan.

Catches from fishing district VN Ľuboreč

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.

Fish around the waterFish nearby (GBIF)Fish species that people have recorded around the water (GBIF database, recent decades). It is not a list of species in the fishing district, only a hint of what occurs in the area.

Species that have been observed or recorded near the water. The number next to a fish is the number of records in the GBIF database, not the number of fish.

BleakFish

Bleak

Alburnus alburnus
game species

prefers 12–24 °C, spawns at 14–22 °C, up to 25 cm and 0.1 kg, average oxygen requirements

Fish: records since 1995 from the surroundings of the water (a rectangle around the fishing district). These are observations and collections, not a list of the fish in the fishing district, so a species may be missing even where it lives.

Photo credits

Fish catalog with all species

Species in the plan2

Stocking of fishing district VN Ľuboreč

What is stocked into the fishing district and how much

Fish stocking

Minimal stocking
K2 2 500 kg, Šr 2,000 fish

Which fish this water suits

Suitability of the water for carp, trout and grayling species based on its properties

Water suitability for the fishing district type

Water suitability for the fishing district typeIndex 0 to 100: how well the properties of the water match the needs of trout, grayling or carp, depending on the fishing district type. It is not a bite forecast or a statement about which fish live there.
62from 100
Water of below-average suitability for carp and cyprinids

The water is in the bottom 7% 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

    ≈ 5.6 °dH (1.0 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

    45
  • Water acidity (pH)Level of evidence: Partially supported

    pH 7.8, 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, aluminum 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

    ≈ 217 mg/l, ŠGÚDŠ atlas

    Medium mineralization corresponds to productive streams and reservoirs.

    What we know about it

    Dissolved solids (mineralization) 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

    63
  • Metals in sedimentLevel of evidence: Partially supported

    2 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

    80

How this water would suit each type

  • Trout73
  • Grayling73
  • Carp62

The same water data evaluated against the requirements of trout, grayling and carp. The fishing district is registered as a carp fishing 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 mineralization 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).

Fish food: aquatic insects

What fish eat in this water and how to choose a bait or fly

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: 0.0× the average month

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec
  • 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

0.0× the average month, 0 of 20 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.

Water now

Water level and flow, water temperature, ice on the surface, surface area, clarity, bloom and weed growth from satellite
Teplota vody≈ 5,0 °CClaritySlightly turbid

Surface area, water clarity, algal bloom and ice at fishing district VN Ľuboreč are tracked from Sentinel satellites. Water temperature is estimated from the weather at the water.

From space: what the Copernicus satellites show

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

  • ClaritySlightly turbid
  • ChlorophyllLow chlorophyll
  • OvergrowthPartly overgrown
  • IceNo ice
Sentinel-2 satellite image of the water body VN Ľuboreč from 5 Nov 2026, Water (NDWI)
Sentinel-2. Contains modified Copernicus Sentinel data 2026.

Water clarity from the satellite

Water clarity from the satelliteAn estimate of turbidity from the reflection of light off the water surface in the red band of the Sentinel-2 satellite. Clear water reflects little, turbid water a lot. It is a relative aid, not a measurement.
≈ 10 FNUSlightly turbid

Turbidity above 25 FNU is on 0% of the water surface.

020406026 Oct29 Oct2 Nov5 Nov
Turbidity estimate trend: from 26 Oct 13:00 to 5 Nov 13:00. Latest 10 FNU, lowest 8, highest 41 FNU.

An estimate based on the reflectance of the water in the red band. This is a relative aid, not a measurement in NTU.

Sentinel-2, 5 Nov 2026, 100% of the area cloud-free

Blooms and chlorophyll

Blooms and chlorophyllThe NDCI index compares the reflectance in the red edge (705 nm) and in the red band (665 nm). Higher values mean more chlorophyll-a, i.e. more algae and cyanobacteria in the water.
NDCI -0.11Low chlorophyll

Elevated chlorophyll shows on 4% of the water surface.

-0.15-0.10-0.050.000.050.1026 Oct29 Oct2 Nov5 Nov
Chlorophyll index (NDCI) trend: from 26 Oct 13:00 to 5 Nov 13:00. Latest -0.11 , lowest -0.11, highest 0.07 .

The NDCI index tracks chlorophyll-a in plant plankton (algae, cyanobacteria). It cannot determine the algae species or toxicity.

Sentinel-2, 5 Nov 2026

Surface overgrowth

Surface overgrowthThe share of the fishing district's area where the satellite sees green vegetation (NDVI index above 0.3): floating and emergent plants and reeds at the bank.
6 % of areaPartly overgrown

The share of the area with green vegetation (plants on and just below the surface, reeds at the bank).

0246826 Oct29 Oct2 Nov5 Nov
Surface overgrowth trend: from 26 Oct 13:00 to 5 Nov 13:00. Latest 6%, lowest 4, highest 7%.

A strip of reeds at the banks may also be counted, so values on small areas may appear higher.

Sentinel-2, 5 Nov 2026, 100% of the area cloud-free

Water surface area: optical and radar

Water surface area: optical and radarThe area of clear water from an optical image (Sentinel-2) and the share of smooth water from radar (Sentinel-1), which also sees through clouds. The change from the usual state matters more than the number itself.
59 ha of clear water

There are not yet enough images to compare the area with the usual state.

0.020.040.060.080.026 Oct29 Oct2 Nov5 Nov
Clear-water area according to Sentinel-2: from 26 Oct 13:00 to 5 Nov 13:00. Latest 59.3 ha, lowest 4.7, highest 59.3 ha.

The clear-water area excludes the pixels at the bank, so it is smaller than the area of the fishing district (65.6 ha according to the map). The change matters more than the number itself. In wind, radar may show the surface as rough.

Sentinel-2, 5 Nov 2026, 100% of the area cloud-free

Ice on the surface

Ice on the surfaceThe share of the area where the satellite sees ice or snow. It cannot determine the thickness or load-bearing capacity of the ice.
0 % of areaNo ice

The share of the area where the satellite sees ice or snow. Over the last 20 days the highest was 0%.

The satellite cannot determine the thickness or load-bearing capacity of the ice. Never go onto the ice based on this figure.

Sentinel-2, 5 Nov 2026, 100% of the area cloud-free

What this means for fishing

What this means for fishingA short analysis based on satellite data and common angling rules. It is an aid, not a bite forecast.
  • Slightly turbid water

    Mostly advantageous for fishing: fish are less shy and can still see the bait. Both natural and more vivid colors work well.

The analysis is based on common angling rules and satellite data. It is an aid, not a bite forecast. The fishing regulations, the permit and the situation on site decide.

Estimates from satellite images with a resolution of 10 to 20 m, not a measurement in the water. They are affected by clouds, shadows, wind and banks. Do not use them to decide about swimming or going onto the ice. Data: Contains modified Copernicus Sentinel data 2026, ESA, Copernicus Data Space Ecosystem; the latest water indicators are computed from the same Sentinel-2 images in the open data on AWS (Registry of Open Data, resolution 20 m). The procedure is described in the Methodology.

Water quality and cleanliness

Oxygen, pH and hardness, nutrients, pollution, wastewater treatment plants, landfills and contaminated sites nearby, groundwater
Quality indexGood quality71

The water quality index of fishing district VN Ľuboreč is 71 out of 100. It is based on 2 groups of data from measurements and registers in the area.

71

Water quality index

Good quality

Five pillars from measurements and registers. A pillar without data is not counted in the index, so check the data reliability too.

  • Oxygenno data–

    We have no measurement or register record for this pillar at this fishing district.

  • Water pollutionNitrogen in groundwater (SHMÚ): ammonium above the standard at 1 of 1 stations68

    Groundwater reaches watercourses as baseflow and carries nitrogen from fields and waste. Nitrates feed algae and contribute to nighttime oxygen drops; nitrites are poisonous to fish. Nitrites and ammonium ions can also be natural in deep groundwater, so at most one point is deducted for them. Data reliability is 52% (1 station within 10 km, the nearest 8.3 km, data from 2025); the adjustment was applied in full.

  • Nutrients and bloomChlorophyll: Low chlorophyll, NDCI -0.11, satellite 5 Nov75

    No sign of a bloom.

  • Pollution sources nearbyno data–

    We have no measurement or register record for this pillar at this fishing district.

  • Acidity and hardnessno data–

    We have no measurement or register record for this pillar at this fishing district.

Oxygen has a weight of 30%, water pollution 25%, nutrients and bloom 20%, sources nearby 15%, acidity and hardness 10%. Detailed measurements are in the cards below.

What water quality means for fish and fishing

Summary: water and oxygen, pollution and life at the water, and how much they shift the conditions score

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+12−2
Public data about this water hardly change the activity score.
  • Biggest deduction: Nitrogen in groundwater (SHMÚ) −1

We assessed 17 factors; 3 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.

Pollution−2

  • Nitrogen in groundwater (SHMÚ)Level of evidence: Partially supported

    ammonium above the standard at 1 of 1 stations

    Groundwater reaches watercourses as baseflow and carries nitrogen from fields and waste. Nitrates feed algae and contribute to nighttime oxygen drops; nitrites are poisonous to fish. Nitrites and ammonium ions can also be natural in deep groundwater, so at most one point is deducted for them. Data reliability is 52% (1 station within 10 km, the nearest 8.3 km, data from 2025); the adjustment was applied in full.

    What we know about it

    Groundwater reaches streams as base flow. The typical nitrate value from stations within 10 km (moderate from 25 mg/l, significant from 50 mg/l, which is the drinking-water standard) indicates how much nitrogen the water brings: it feeds algae and contributes to night-time oxygen crashes (Camargo et al. 2005). Nitrites and ammonium above the standard at any station add one point, because nitrites are poisonous to fish (Lewis and Morris 1986); in deep groundwater they can also be natural, so only one point. The adjustment is multiplied by the reliability of the data.

    Sources: SHMÚ, groundwater; Camargo et al. 2005; Lewis and Morris 1986

    −1
  • Iron in groundwater (SHMÚ)Level of evidence: Partially supported

    iron typically 13 mg/l (standard 0.2)

    Dissolved iron precipitates when groundwater emerges into the air and clogs gills, gravel with eggs and invertebrate shelters. Data reliability is 52% (1 station within 10 km, the nearest 8.3 km, data from 2025); the adjustment was applied in full.

    What we know about it

    Dissolved iron precipitates when groundwater emerges into the air and clogs gills, egg-bearing gravel and the shelters of invertebrates (Vuori 1995). It is counted at a typical value of at least 1 mg/l (five times the standard); the adjustment of −1 is multiplied by the reliability of the data.

    Sources: SHMÚ, groundwater; Vuori 1995

    −1

Life by the water0

  • Aquatic insect hatchesLevel of evidence: Angling practice

    0.0× the average month, 0 of 20 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)
  • Harmful substances 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.

Water composition and pollution

Oxygen, nutrients, the nearest monitoring site and wastewater treatment plants

Water pollution

Water pollution (SHMÚ)Water quality indicators that fail the standards at the nearest monitoring site on the same watercourse in the SHMÚ yearbooks for 2022 to 2025.
Surface water, 2024
within the standardno unmet standard at the nearest SHMÚ site

Surface water: nearest monitoring site

Ľuboreč, aboveĽuboreč, river km 10.4 · 3.0 km from the fishing district
no unmet standard
2022202320242025

In the yearbooks for 2022 to 2025 this site has no unmet indicator.

The location of the site is only approximate (based on the water body), so the actual sampling point may be elsewhere on the watercourse.

  • standard not met
  • no unmet standard
  • site not in the yearbook
Polluted water in Slovakia: the worst places and polluters

The data comes from the SHMÚ yearbooks (surface waters 2022 to 2025). The yearbook lists the sites that failed the standard; a site missing from the yearbook is not considered clean. We determine the distance and the match of the watercourse name ourselves, so the assignment is indicative.

Water chemistry, sediments and contaminated sites nearby

pH and hardness, trace elements in water and sediment, landfills and contaminated sites, boreholes with analyses (ŠGÚDŠ)

510

Water according to the atlas

pH 7.8modeled estimate

water type Ca–HCO₃

Mineralization 217 mg/l, soft water (5.6 °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: Vanadium 174 mg/kg

Position of the highest-ranked element among the sample points on streams in Slovakia: percentile 96. Interpolation of the Geochemical Atlas of river sediments.

Trace elements in the stream water

1 from 10indicators in the top 5%

highest: Copper 13.5 μg/l

Position of the highest measured value in the distribution of all surface water samples in Slovakia: percentile 96 (Ľuboreč, potok).

Boreholes and groundwater analyses

60boreholes within 3 km

100 water analyses nearby

Of these, 60 have an archive report from Geofond. The boreholes are hydrogeological, geological, engineering-geological and other.

Environmental burdens and landfills

3sites within 3 km

3 landfills

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

The chemistry of water and sediments is a model estimate from interpolated maps of the Geochemical Atlas of Slovakia, not current monitoring or a measurement in the stream. The proximity of a contaminated site or landfill does not mean that substances from it leak into the water. The locations of the objects are on the map in the Geology and geophysics section.

Groundwater

Stations nearby and measured values

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)

  • Velka nad Iplom-obecLučenec district · borehole or well · 8.3 km from the fishing district
    natural substances only
    2017 to 2025

    Exceeded in 2025:

    • Manganese
    • Total iron
    • Ammonium
    • Conductivity at 20 °C
    • TOC
    • Sulfates
    Measured values, year 2025, sampling 10 Nov 2025 (2 samplings, the highest value of the year for each substance)
    • Nitrates< 1 mg/l
    • Ammonium1.04 mg/l
    • Nitrites< 0.01 mg/l
    • Iron13 mg/l
    • Chlorides152 mg/l
    • Aluminum20% of the standard
    • MCPP70% of the standard
    • benzene20% 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).

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 8.3 km), measured in 2025. Closer stations carry more weight. This is groundwater near the fishing 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

1.04mg/l

above the standard

Standard 0.5 mg/l. 1 station, 8.3 km from the fishing district. Above the standard: 1 of 1 (Velka nad Iplom-obec, 8.3 km from the fishing district).

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

< 1mg/l

not detected

Below the limit of quantification (1 mg/l), standard 50 mg/l. 1 station.

012

Oxygen

0.81mg/l

low oxygen

Mark on the dial: 9 mg/l, guideline for salmonid waters. 1 station, 8.3 km from the fishing district.

020

Water temperature

12°C

warmer

1 station, 8.3 km from the fishing district.

510

pH

6.8

suitable for fish

1 station, 8.3 km from the fishing district.

08

Water hardness

7.39mmol/l

hard

1 station, 8.3 km from the fishing district.

00.3

Iron

13mg/l

above the standard

Standard 0.2 mg/l. 1 station, 8.3 km from the fishing district. Above the standard: 1 of 1 (Velka nad Iplom-obec, 8.3 km from the fishing district).

00.075

Manganese

2.34mg/l

above the standard

Standard 0.05 mg/l. 1 station, 8.3 km from the fishing district. Above the standard: 1 of 1 (Velka nad Iplom-obec, 8.3 km from the fishing district).

0375

Chlorides

152mg/l

close to the standard

Standard 250 mg/l. 1 station, 8.3 km from the fishing district.

0375

Sulfates

259mg/l

above the standard

Standard 250 mg/l. 1 station, 8.3 km from the fishing district. Above the standard: 1 of 1 (Velka nad Iplom-obec, 8.3 km from the fishing district).

0188

Conductivity

139mS/m

above the standard

Standard 125 mS/m. 1 station, 8.3 km from the fishing district. Above the standard: 1 of 1 (Velka nad Iplom-obec, 8.3 km from the fishing district).

0150%

Metals and metalloids

20% of standard

below the standard

Highest: Aluminum 0.04 mg/l (20% of the standard, 8.3 km from the fishing district). 1 station.

0150%

Pesticides

70% of standard

close to the standard

Highest: MCPP 0.07 µg/l (70% of the standard, 8.3 km from the fishing district). 1 station.

0150%

Solvents and benzene

20% of standard

below the standard

Highest: benzene 0.2 µg/l (20% of the standard, 8.3 km from the fishing district). 1 station.

0150%

PAHs (combustion, petroleum substances)

0% of standard

not detected

Below the limit of quantification: substances from this group were not detected in the samples. 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.
Sulfates
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.
Pesticides
Pesticides get into groundwater from fields. The standard of 0.1 µg/l per substance (0.5 µg/l in total) is a drinking-water standard and is very strict; fish are usually harmed only by a much higher concentration. The value mainly shows how heavily the surroundings are burdened by agriculture.
Solvents and benzene
Chlorinated solvents (for example tetrachloroethene) and benzene come from industry, treatment plants and petrol stations. They are toxic and break down slowly in groundwater.
PAHs (combustion, petroleum substances)
PAHs are formed by combustion and petroleum spills. The standard for benzo(a)pyrene (0.01 µg/l) is very strict for drinking water because it is a carcinogen.

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.

About the fishing district and the reservoir

Location and area, character of the water, river basin and reservoir, the organization's description and historical satellite images
RegionBanská Bystrica Region66

Fishing district VN Ľuboreč has the number 3-5360-1-1. The reliability of data about the fishing district is 66 out of 100.

Fishing district number3-5360-1-1

Location, character and river basin of fishing district VN Ľuboreč

Where the fishing district lies, what type of water it is, what its river basin is and what the organization writes about it

Location, area and nature protection

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. 4 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. sandy – gravelly with sediment 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. indented
  • 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. 20%
  • 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. willow, alder
What this means for anglersexplanation of the bottom, vegetation, watercourse line and other data of this fishing district
  • Depth: Deeper, 3–6 m

    Fish have somewhere to retreat from both heat and cold. On still waters a temperature layer (thermocline) can form in summer.

  • Bottom: Gravel bottom

    Well-oxygenated water and plentiful food (aquatic insect larvae). Typical of the grayling and barbel zones; gravel bars also serve many fish as spawning grounds.

  • Bottom: Sandy bottom

    Shallower sections with fewer shelters. In lowland streams they alternate with muddy ones; fish keep to banks, roots and obstacles.

  • Watercourse line: Indented line

    Many coves, islets and depth changes, so many hiding places and spots where fish stop. The section is harder to walk and to search.

  • Shade: Partly shady, 11–40%

    A balanced stretch: there is a source of insects and also enough light for aquatic plants.

  • Vegetation: Willow

    Grows by the water; the roots stabilize the bank and create shelters beneath the surface. The branches hang over the water and provide shade and insects.

  • Vegetation: Alder

    A typical tree of stream and river banks. A dense root system creates undercut banks and shelters, and the leaves decompose quickly.

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.

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 Ľuboreč from 2018
2018imaged 9 Aug 2018
Aerial image of fishing district VN Ľuboreč from 2021
2021imaged 6 Sep 2021
Aerial image of fishing district VN Ľuboreč from 2024
2024imaged 30 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.

66

Data reliability

Measurements and estimates

What is measured right at the water for this fishing district, what is only partly supported, what is a model estimate and what is missing. The higher the number, the more you can rely on the indexes on this page.

  • partly
    Water temperatureAn estimate from nearby SHMÚ stations, corrected for altitude and weather.
  • missing
    Water stageThere is no gauging station at this fishing district.
  • estimate
    Weather and pressureA forecast model for the fishing district's coordinates, not a measurement on the bank.
  • measured
    Depths and bedA model from spot heights of the original terrain before flooding.
  • measured
    Clarity, bloom and iceSentinel-2 satellite, last usable image 9 days ago.
  • partly
    Water chemistryQuality assessment from the nearest SHMÚ monitoring site.
  • partly
    Fish in the fishing districtThe fishing district's stocking plan and observations at the water. Nobody has recorded a catch here yet.
  • partly
    Rules and permitsThe act, the decree and the list of fishing districts. Check local exceptions in your permit.
  • estimate
    Fishing district locationThe location is approximate, based on the description of the fishing district boundaries.

Geology and geophysics

Rocks under the water, faults and springs, radon and natural radiation, magnetic field, earthquakes, geothermal energy, mines and deposits, landslides

Rocks, faults, radon and geophysical measurements around fishing district VN Ľuboreč.

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

medium

Common for most of Slovakia.

08

Uranium (eU)

3.0ppm

common

Typical background of the rocks.

020

Thorium (eTh)

9.0ppm

around the crustal average

Natural background of the rocks.

04

Potassium (K)

1.04%

below the crustal average

Natural background of the rocks.

0150

Gamma radiation

53nGy/h

around the world average

Natural background of the bedrock.

SVJZ

Magnetic anomaly (ΔT)

-102nT

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 observed at the surface

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.
Závada – Párovka – Závada pri Chrťanoch – none (750 m from the water)pri ceste na Pravicu – Závada pri Chrťanoch – none (1.9 km from the water)za strediskom – Ľuboriečka – none (2.5 km from the water)Dolná Strehová – M-4 – non-spa (4.2 km from the water)Dolná Strehová – Vieska – HGDS-1 – non-spa (4.5 km from the water)Slovenské Kľačany – TSK-1 – non-spa (5.8 km from the water)Hámor – LKŠ-1 – non-spa (8.0 km from the water)Muľa – Hámor – S-107 – non-spa (8.2 km from the water)HGDŠ-1, M-4 – j1 (4.9 km from the water)TSK-1 – j1 (5.0 km from the water)LKŠ-1,2 – j2 (8.4 km from the water)a1 (5.0 km from the water)c1 (5.2 km from the water)a1 (6.4 km from the water)c1 (6.7 km from the water)a1 (6.8 km from the water)c1 (9.6 km from the water)b1 (9.7 km from the water)Dolná Strehová (5.3 km from the water)Ľuboriečka – brown coal (2.1 km from the water)Veľká nad Ipľom – diatomite (5.0 km from the water)Ľuboriečka – brown coal (2.1 km from the water)Veľká nad Ipľom – diatomite (4.9 km from the water)Ľuboreč – stavebný piesok – sand (1.8 km from the water)Ľuboreč – 3 – building stone – rhyodacite tuff (2.3 km from the water)Ľuboriečka – building stone – rhyolite tuffs (2.8 km from the water)Ľuboriečka – building stone – rhyolite tuffs; tuffites (3.3 km from the water)Ľuboriečka – Šibalov Laz – building stone – rhyodacite tuffite (3.8 km from the water)Ľuboriečka – Kovšinský vrch – building stone – tufity pyroxenického an (4.5 km from the water)Mašková – kóta 262,6 Skalica – building stone – basalt pyroclastics (4.9 km from the water)JUP – okrajové časti – brown coal (4.9 km from the water)LUBOREC – Landslides (260 m from the water)LUBOREC – Block fields (900 m from the water)ZAVADA – Landslides (1.3 km from the water)LUBOREC – Block fields (1.5 km from the water)– Landslides (1.7 km from the water)LUBOREC – Landslides (1.8 km from the water)LUBOREC – Landslides (1.8 km from the water)– Landslides (1.8 km from the water)LUBOREC – Block fields (1.9 km from the water)Ľuboreč – Landslides (2.0 km from the water)– Landslides (2.3 km from the water)– Landslides (2.9 km from the water)Ľuboreč – širokoprofilový vrt (Ø vŕtania nad 600 m (1.1 km from the water)Závada – širokoprofilový vrt (Ø vŕtania nad 600 m (1.5 km from the water)Závada – úzkoprofilový vrt s obyčajnou pitnou a ú (1.7 km from the water)Dolná Strehová-Dúbrava – úzkoprofilový vrt s obyčajnou pitnou a ú (1.8 km from the water)Ľuboriečka – úzkoprofilový vrt s obyčajnou pitnou a ú (1.8 km from the water)Ľuboreč – širokoprofilový vrt (Ø vŕtania nad 600 m (1.9 km from the water)Ľuboreč – úzkoprofilový vrt s obyčajnou pitnou a ú (1.9 km from the water)Ľuboreč – úzkoprofilový vrt s obyčajnou pitnou a ú (1.9 km from the water)Závada – širokoprofilový vrt (Ø vŕtania nad 600 m (2.2 km from the water)Ľuboreč – monitoring borehole (2.3 km from the water)Dolná Strehová – úzkoprofilový vrt s obyčajnou pitnou a ú (2.5 km from the water)Osušie – úzkoprofilový vrt s obyčajnou pitnou a ú (2.6 km from the water)Osušie – širokoprofilový vrt (Ø vŕtania nad 600 m (3.0 km from the water)zlato 1 ks – gold (710 m 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 center.

1 km2 km45 °C85 °C

Heat underfoot

45°C at 1,000 m depth

heat flow 75 mW/m²

At a depth of 2,000 m about 85 °C (increase of 40 °C per kilometer). Atlas of Geothermal Energy of Slovakia.

Gold in river sediment

1sample with gold

10 ore minerals in the sediment

Up to 1 grain in one sample (710 m from the water). Panning prospecting counted gold grains in a concentrate from river sediment.

0 °C120

Geothermal energy

38°C at the wellhead

5 geothermal boreholes within 10 km

Warmest: Slovenské Kľačany – TSK-1, yield 2.0 l/s, 5.8 km from the water.

Deposits and ore occurrences

12records within 5 km

4 deposits, 8 ore occurrences

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

Landslides and slope deformations

12areas within 3 km

1 active

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 modeled 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.

Rocks and water chemistry

Rocks and water chemistryThe prevailing group of rocks at the water spot and what it usually means for the hardness, pH and richness of the water.

Bedrock at the water spot

Alluvium

The prevailing group of rocks according to the map.

Gravels, sands and loams in the valley tell about the valley floor, not about the rock in the catchment. The water chemistry is determined mainly by the bedrock higher up above the spot.

The rock at a single spot does not determine the chemistry of all the water: that depends on the bedrock across the whole catchment above the spot. The figure serves as a hint, not as a measurement.

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

2.0from 9

quiet field

Latest measurement (15 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: 3.3 (quiet 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.

Nature and hazards at the water

Wildlife, birds and plants around the water, dangerous and invasive species, what to watch out for

Wildlife, birds and plants observed around fishing district VN Ľuboreč.

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.

Common kingfisherBird

Common kingfisher

protected speciesmany records
Most records: September.
About the species

A small bird that dives for little fish. It nests in steep banks of clean streams.

Great egretBird

Great egret

protected speciesmany records
Most records: April.
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.

DragonfliesWildlife

Dragonflies

many records
Most records: August.
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: April.
About the species

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

Eurasian beaverWildlife

Eurasian beaver

protected speciesa few records
Most records: January.
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.

Grass snakeWildlife

Grass snake

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

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

Fire salamanderWildlife

Fire salamander

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

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

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.

Eurasian otterWildlife

Eurasian otter

protected speciesa single record
Most records: January.
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.

European pond turtleWildlife

European pond turtle

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

The only native turtle in Slovakia. It lives in standing and slow waters with a soft bottom.

Japanese knotweedInvasive plant

Japanese knotweed

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

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

Black alderPlant

Black alder

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

A riparian tree whose roots reach below the water surface.

Yellow flag irisPlant

Yellow flag iris

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

A tall wetland plant with yellow flowers that grows on damp banks.

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 meters tall, with pink flowers. It overgrows the banks of watercourses.

Broadleaf cattailPlant

Broadleaf cattail

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

A wetland plant with a brown cylindrical fruiting spike.

Common reedPlant

Common reed

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

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

Castor bean tickRisk

Castor bean tick

to be reckoned withquite a few records
Most records: October.
How to protect yourself

Transmits tick-borne encephalitis and Lyme disease. It waits in tall grass and in the vegetation along banks.

How to protect yourself: From spring to autumn check yourself after fishing, use repellent and tuck long trousers into your socks. Remove a tick as soon as possible with tweezers. A vaccination against encephalitis exists.

MosquitoesRisk

Mosquitoes

to be reckoned withquite a few records
Most records: Jul.
How to protect yourself

They breed in standing water, so they are worst around reservoirs, oxbow lakes and floodplain forests, especially at sunset.

How to protect yourself: When fishing in the evening and at night wear long sleeves, repellent and a net. Warmth and humidity after rain speed up mosquito development.

HorsefliesRisk

Horseflies

to be reckoned witha few records
Most records: Jul.
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.

Wild boarRisk

Wild boar

to be reckoned witha few records
Most records: Jul.
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.

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 16:08

Other fishing districts nearby

Fishing districts on the same watercourse and the nearest fishing districts in the river basin
Fishing districts6