Fishing district boundaries: Čiastkové povodie rieky Tisa od štátnej hranice SR – Maďarsko po štátne hranice SR – Ukrajina a odstavené ramená v povodí revíru. Hlavný tok rieky Tisa v danom úseku – hraničná voda. Tisza is carp fishing district no. 4-2800-1-1. It lies in Trebišov district (Košice Region). The fishing district is 5.4 km long. The fishing district is managed by SRZ organization Čierna nad Tisou Game fish of the fishing district (1): The bite score for fishing district Tisza is calculated for 9 game fish species from the weather right at the water, water temperature, light and air pressure. The forecast applies to the location 48.391° N, 22.131° E. The score, the best window of the day and what pushes it up or down Loading data… Hour by hour, pressure and the next few days Loading data… Where the sun and moon are right now and when the best windows of the day will come Drag along the axis to see where the sun and moon will be. The day lasts 9 h 17 min. Full moon around 24 Nov, new moon around 9 Dec. 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. Fishing district Tisza is classed as carp waters. Permits for fishing district Tisza are issued by SRZ organization Čierna nad Tisou Closed season, fishing hours, minimum sizes and daily limit. For guidance only: check them in the fishing regulations of the fishing district 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. 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. 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. 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. 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. 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. 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. 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. 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). The manager, the user and the organization that issues permits The center of fishing district Tisza is at coordinates 48.39143, 22.13107. The fishing district is 5.4 km long. Course of the water, access, parking and spots marked by the organization The line shows the course of the fishing district according to the "Rybárske revíry" data 2026. Verify access points and exact boundaries on site. Where you can reach the water, where tributaries join and where there is danger 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. Spots within 3 km of the watercourse are shown. Very slow watercourse A lowland, almost stagnant section: calm, often more turbid water; the bottom tends to be muddy and sandy. Typical of carp fishing districts. Loading the 3D terrain model… Loading the 3D channel model… Height is measured from the flood level. Bedrock layer thicknesses are illustrative; the map shows only the surface. How the flooded area and water volume in the reach change from drought to flood. Bed by stream slope, bedrock from the geological map. The river channel is a model: width and slope come from terrain scanning; depths, discharge and flow velocity are estimated from hydraulic relations, not measured by SHMÚ. The flood extent is indicative and does not replace flood hazard maps. Not suitable for boating or wading. Varied stream How many different habitats the stream offers: bends, alternating currents, tributary mouths and cover along the bank. A higher number means more places where fish hold, not more fish. What the bed and banks are made of: rock, sediments and their effect on the water After rain the water quickly turns turbid and fish hunt more by smell. 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: sand, fine-grained, muddy; 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. We record 1 game fish species in fishing district Tisza. Of these, 1 species is in the stocking plan. What is stocked into the fishing district and how much Suitability of the water for carp, trout and grayling species based on its properties The water is in the top 39% of 897 carp fishing districts with data. Reliability medium: we used 5 water data points; the rest are missing and are not part of the assessment. gradient 0.3 ‰, 101 m a.s.l. → lowland zone Based on gradient and elevation, the stream lies in an area that corresponds to the lowland zone. This is a natural zone for carp and cyprinids. European streams are divided from source to mouth into zones with typical fish: trout, grayling, barbel and lowland; they are determined mainly by gradient and stream size (Huet 1959), and the zones can also be used to assess the condition of streams (Aarts and Nienhuis 2003). We estimate the zone from the gradient of the fishing district's line and its elevation; it is a simplification without stream width. A match between the zone and the fishing district type adds +1 to quality, a clear mismatch −1. Sources: Huet 1959; Aarts and Nienhuis 2003 ≈ 10.1 °dH (1.8 mmol/l of calcium and magnesium), ŠGÚDŠ atlas Moderately soft water: productivity is average. 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 pH 7.7, ŠGÚDŠ atlas The pH is within the range in which fish commonly thrive. 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 ≈ 364 mg/l, ŠGÚDŠ atlas Medium mineralization corresponds to productive streams and reservoirs. 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 4 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. 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 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). Surface area, water clarity, algal bloom and ice at fishing district Tisza are tracked from Sentinel satellites. Water temperature is estimated from the weather at the water. Sentinel-2 (optical) and Sentinel-1 (radar), updated roughly every 6 days The watercourse is narrower than a satellite pixel (10 m). The values are therefore taken from a strip around the fishing district line and from pixels where water mixes with the bank, so they are only approximate and may also show the bank. The water surface area is not assessed for a watercourse, and estimates over the water appear in the image only where the watercourse is wider than a satellite pixel. Similar to recent periods. Turbidity above 25 FNU is on 0% of the water surface. Since 4 Apr 2026: lowest 4 FNU (5 Nov 2026), highest 17 FNU (4 Apr 2026). 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, 10 Nov 2026, 96% of the area cloud-free Elevated chlorophyll shows on 10% of the water surface. Since 4 Apr 2026: lowest -0.09 (10 Nov 2026), highest 0.30 (8 Jun 2026). The NDCI index tracks chlorophyll-a in plant plankton (algae, cyanobacteria). It cannot determine the algae species or toxicity. Sentinel-2, 10 Nov 2026 The share of the area with green vegetation (plants on and just below the surface, reeds at the bank). Since 4 Apr 2026: lowest 0% (24 Apr 2026), highest 9% (18 Jun 2026). A strip of reeds at the banks may also be counted, so values on small areas may appear higher. Sentinel-2, 10 Nov 2026, 96% of the area cloud-free 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, 10 Nov 2026, 96% of the area cloud-free 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. Data have been stored since 4 Apr 2026 (30 periods of 5 days); the charts show how they develop. Download history (CSV) 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. The water quality index of fishing district Tisza is 67 out of 100. It is based on 4 groups of data from measurements and registers in the area. Good quality Five pillars from measurements and registers. A pillar without data is not counted in the index, so check the data reliability too. 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. Summary: water and oxygen, pollution and life at the water, and how much they shift the conditions score We assessed 17 factors; 6 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. ≈ 10.1 °dH, ŠGÚDŠ atlas Harder water is more productive, has more food and buffers acidity swings better. 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 site Malé Trakany on Tisza, on the fishing district line, standard not met in 4 of 4 years (2022 to 2025); in 2025: benzo(a)pyrene, fluoranthene, chlorophyll a The nearest SHMÚ monitoring site on this watercourse does not meet water quality standards. Lack of oxygen and organic pollution weaken fish directly, ammonium ions and nitrites are toxic to them, and further nutrients promote algae. All four years are counted, and newer ones carry more weight. The location of the site is only approximate (by water body), so it is counted with less weight. An unmet standard does not mean the fish do not bite; the reduction is at most 5 points. The nearest SHMÚ monitoring site on the same watercourse: unmet water quality standards for the years 2022 to 2025 (newer years carry more weight). Lack of oxygen and organic pollution directly weaken fish (Davis 1975), ammonium and nitrites are toxic, and nutrients feed algae. The exact amount by which an unmet standard lowers the bite is not verified, so this is angling practice and caution. The deterioration is at most 5 points and only lowers: what SHMÚ does not report is not proof of cleanliness. Benzo(a)pyrene and other PAHs are not counted in the score because most watercourses exceed their extremely low standard. Sources: SHMÚ, surface waters; Government Regulation of the SR No. 269/2010; Davis 1975 ammonium above the standard at 2 of 3 stations Groundwater reaches streams as base flow and carries nitrogen from fields and waste. Nitrates feed algae and contribute to nighttime oxygen crashes; nitrites are toxic to fish. Nitrites and ammonium can also be natural in deep groundwater, so at most one point is deducted for them. The data reliability is 85% (3 stations within 10 km, nearest 3.9 km, data from 2025), and the adjustment was applied in full. 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 solvents and benzene (above the standard at 1 of 2 stations), highest value 1.6 times the standard Metals, pesticides, PFAS and chlorinated solvents above the standard show the burden on the surroundings. The standards are set for drinking water and are stricter than the limits harmful to fish, so the reduction is small; metals can also come from rocks. PAHs are not counted in the score. Data reliability is 85% (3 stations within 10 km, the nearest 3.9 km, data from 2025); the adjustment was applied in full. Metals and metalloids, pesticides, PFAS and chlorinated solvents above the standard at stations within 10 km. The standards are drinking-water standards and stricter than the limits harmful to fish, so the reduction is small: one point for one or two groups of substances, two points for three groups or for a value at least five times above the standard. Metals are poisonous to fish, more so in soft water (Pagenkopf 1983), and PFAS accumulate in tissues (Giesy and Kannan 2001); metals can also come from rocks. PAHs are not counted. The adjustment is multiplied by the reliability of the data. Sources: SHMÚ, groundwater; Pagenkopf 1983; Giesy and Kannan 2001 iron typically 3.78 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 85% (3 stations within 10 km, the nearest 3.9 km, data from 2025); the adjustment was applied in full. 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 catchment above the spot 31,257 km², average flow 340.4 m³/s, HydroRIVERS A large river has a more stable temperature and water level. Small streams heat up and dry out quickly in heat waves; large rivers are more stable. Angling practice and a physical consideration. Data for these factors is missing or within the normal range: 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. Oxygen, nutrients, the nearest monitoring site and wastewater treatment plants Polycyclic aromatic hydrocarbons. The standard for benzo(a)pyrene is extremely low (0.17 ng/l), so most streams exceed it; the main sources are combustion and atmospheric deposition. The location of the site is only approximate (based on the water body), so the actual sampling point may be elsewhere on the watercourse. 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. pH and hardness, trace elements in water and sediment, landfills and contaminated sites, boreholes with analyzes (ŠGÚDŠ) pH 7.7modeled estimate water type Ca–Na+K–HCO₃ Mineralization 364 mg/l, moderately hard water (10.1 °dH). Interpolation of measurements from the Geochemical Atlas of Slovakia, not a measurement in the stream. 4 from 15elements in the top 10% highest: Cadmium 1.34 mg/kg Position of the highest-ranked element among the sample points on streams in Slovakia: percentile 95. Interpolation of the Geochemical Atlas of river sediments. 0 from 9indicators in the top 5% highest: Copper 6.30 μg/l Position of the highest measured value in the distribution of all surface water samples in Slovakia: percentile 93 (Tisa). 37boreholes within 3 km 78 water analyzes nearby Of these, 33 have an archive report from Geofond. The boreholes are hydrogeological, geological, engineering-geological and other. 1sites within 3 km 1 landfill 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. Stations nearby and measured values Exceeded in 2025: Exceeded in 2025: Exceeded in 2025: 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). A typical value from 3 groundwater stations within 10 km of the fishing district (nearest 3.9 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. 0.66mg/l above the standard Standard 0.5 mg/l. Range 0.35 to 0.99 mg/l, 3 stations. Above the standard: 2 of 3 (highest: Backa N-32, 7.5 km from the fishing district). 0.02mg/l far below the standard Standard 0.5 mg/l. Range 0.005 to 0.04 mg/l, 3 stations. < 1mg/l not detected Below the limit of quantification (1 mg/l), standard 50 mg/l. 3 stations. 0.04mg/l low oxygen Mark on the dial: 9 mg/l, the guideline for salmonid waters. Range 0 to 0.23 mg/l, 3 stations. 12.8°C warmer Range 12.7 to 13.6 °C, 3 stations. 6.96 suitable for fish Range 6.96 to 7.1, 3 stations. 2.47mmol/l moderately hard Range 2.12 to 3.92 mmol/l, 3 stations. 3.78mg/l above the standard Standard 0.2 mg/l. Range 3.36 to 9 mg/l, 3 stations. Above the standard: 3 of 3 (highest: Velke Trakany-kolonia, 3.9 km from the fishing district). 1.39mg/l above the standard Standard 0.05 mg/l. Range 0.46 to 1.83 mg/l, 3 stations. Above the standard: 3 of 3 (highest: Velke Trakany-kolonia, 3.9 km from the fishing district). 22.1mg/l far below the standard Standard 250 mg/l. Range 7.6 to 134 mg/l, 3 stations. 36.9mg/l far below the standard Standard 250 mg/l. Range 1 to 67.4 mg/l, 3 stations. 53mS/m below the standard Standard 125 mS/m. Range 45.6 to 88.9 mS/m, 3 stations. 20% of standard below the standard Highest: Lead 7.9 µg/l (79% of the standard, 3.9 km from the fishing district). 3 stations. 160% of standard above the standard Highest: chloroethene (vinyl chloride) 0.8 µg/l (160% of the standard, 7.5 km from the fishing district). 2 stations. Above the standard: 1 of 2. 0% of standard not detected Below the limit of quantification: substances from this group were not detected in the samples. 1 station. Sources Fishing district Tisza has the number 4-2800-1-1. The reliability of data about the fishing district is 58 out of 100. Where the fishing district lies, what type of water it is, what its river basin is and what the organization writes about it Fish have somewhere to retreat from both heat and cold. On still waters a temperature layer (thermocline) can form in summer. Shallower sections with fewer shelters. In lowland streams they alternate with muddy ones; fish keep to banks, roots and obstacles. 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. Even depth and current. Fish stay near the bank, stones, roots and at the boundary of faster and slower current. In summer the water warms up quickly and aquatic plants and algae thrive here. At midday fish move to deeper places. 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. Tall, fast-growing trees. They provide shade and insects, and branches and leaves fall into the water. Fish can move freely along the watercourse; the section is more continuous. 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. Watercourse from the HydroRIVERS database matched with the fishing district, line deviation about 158 m The data come from a global database with a coarser resolution (tens of meters), so they are only approximate for small waters. Depth and volume are model averages. Changes in the surroundings and nature from 2019 to 2025: how the banks, vegetation and landscape around the water change. The images switch automatically; you can also browse them by hand. 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. 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. Rocks, faults, radon and geophysical measurements around fishing district Tisza. 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. Geological map of Slovakia 1 : 50,000: rocks beneath the surface, from alluvial gravels and sands through clays to granites and limestones. Colors follow the ŠGÚDŠ legend; clicking the map shows a description of the rock at that spot. For anglers: Gravel bars and rocky riffles give a clean bottom and habitat for zander, perch and barbel. Clayey and muddy ground holds food for carp and bream. Limestone and dolomite give harder water that is richer in food than granite and quartzite. Radon risk of the bedrock (low, medium, high). It is based on the radioactivity of rocks and on fissures. The map shows the bedrock, not radon in water. For anglers: Radon is a natural tracer of groundwater. Bedrock with a higher radon risk (granite, gneiss, tectonic faults) tends to be where fissure water comes to the surface. Most of Slovakia is "medium", so mainly a high risk is of interest. Equivalent uranium in surface rocks from airborne gamma spectrometry (ppm). From 4 ppm the bedrock is usually classified as having an elevated radon risk. For anglers: A high uranium level is a sign of granite, gneiss and black shales, that is, rocks from which radon and dissolved substances get into the water. It has no direct meaning for bites, but it helps to read the geology of the area. Gamma radiation dose rate in air (nGy/h) from an airborne survey. It is the natural background of the bedrock, not pollution. For anglers: Higher values are found in rocks rich in uranium, thorium and potassium (granite, gneiss, flysch with shales). It complements the uranium map; for an angler it mainly shows where the bedrock changes. Anomalies of the Earth's magnetic field (ΔT, in nT) caused by rocks with magnetic minerals, such as volcanic rocks, basalts or amphibolites. For anglers: Fish (especially salmonids and eels) sense the magnetic field. Whether local anomalies affect their movement and bites has not been shown; it is treated as a hypothesis. Click or tap the map to find the value at that location. low Bedrock with a low radon share. 2.2ppm common Typical background of the rocks. 6.9ppm below the crustal average Natural background of the rocks. 1.28% below the crustal average Natural background of the rocks. 47nGy/h around the world average Natural background of the bedrock. -44nT 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. up to 3 km fault nearby Tectonic fault on the geological map. 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. 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. River alluvium100% of the water line Gravelly and sandy bottom and floodplains; the water is replenished from groundwater in the alluvium. Geological Map of Slovakia 1:50,000. 65°C at 1,000 m depth heat flow 105 mW/m² At a depth of 2,000 m about 125 °C (increase of 60 °C per kilometer). Atlas of Geothermal Energy of Slovakia. 1record within 5 km 1 ore occurrence Geofond registers, the metallogenetic map and the mineral resources map. 1areas 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 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 analyzes. Highest forecast Kp in the next 24 hours: 1.7 (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). 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. Wildlife, birds and plants observed around fishing district Tisza. 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. An insect with aquatic larvae. Adults live only briefly and hatch all at once in swarms. The most common duck; it nests by almost every water with bankside vegetation. 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. Predatory insect. The larvae live underwater for several months to years; adult dragonflies hunt in the air above the water. A small bird that dives for little fish. It nests in steep banks of clean streams. 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. A shy forest bird that nests in old forests and goes to streams and wetlands to hunt fish and frogs. A harmless snake with two yellow spots on the nape. It swims well and hunts frogs, fish and newts. 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. A group of green frogs that sit by the bank and jump into the water when disturbed. The largest native toad. In spring it migrates to water, where it breeds. The only native turtle in Slovakia. It lives in standing and slow waters with a soft bottom. A tall wetland plant with yellow flowers that grows on damp banks. An aquatic plant with yellow flowers and floating and submerged leaves. It grows in both standing and slow-flowing waters. A submerged plant without roots that floats in the water. Tall grass that forms extensive reed beds around ponds and on banks. A wetland plant with a brown cylindrical fruiting spike. A tiny floating plant that can cover the whole surface of standing water. 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. 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. 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. 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. Nearest fishing districts around Tisza: 6. Nearest fishing districts in the same river basin
Fishing district Tisza at a glance
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 windowsNajlepšie oknoVoda–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.
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.Weather and forecast for fishing district Tisza
Weather and forecast
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.
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.Sun
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.
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.
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 managerWater typeCarpOrganizationSRZ organization Čierna nad TisouLaw and fishing rules at fishing district Tisza
Closed season for all fish
§ 13, paragraphs 3 and 5 of the ActDaily fishing hours
§ 11 of the DecreeRods, baits and fishing days
§ 18 of the ActHow many fish you may keep per day
§ 14 of the DecreeProtection periods by species§ 10 of the Decree
Minimum sizes§ 12 of the Decree
Show as a list
Before and after fishing
Who manages fishing district Tisza
Who manages the fishing district
Where to fish
Fishing district map, access and parking, spots by the water, tributary mouths, hazardous places and surrounding terrainLength5.4 kmDistrictTrebišovMap of fishing district Tisza
48.39143, 22.13107
OpenStreetMap
Spots by the water, tributary mouths and gradient
Fishing spot finder
Spots by the water
Elevation profile of the watercourse
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.Terrain in 3D
River channel in 3D
3D model of the whole river opened at this fishing district: discharge from drought to flood, depths and current, fishing spot finder by species, channel cross-section, bed and bedrockDischarge (estimate)304 m³/sChannel width122 m67River channel
Model estimateChannel cross-section
Water area and volume by level
Bed and bedrock
Fishing spots index
Bed and bedrock according to maps
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.Fish and catches
Which fish live here, what has been caught here, what is stocked, which species the water suits and what the fish eatDocumented species1Dnes najlepšieCatches from fishing district Tisza
Catches from the fishing district
Stocking of fishing district Tisza
Fish stocking
Which fish this water suits
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.What we know about it
What we know about it
What we know about it
What we know about it
What we know about it
How this water would suit each type
Water now
Water level and flow, water temperature, ice on the surface, surface area, clarity, bloom and weed growth from satelliteTeplota vodyClaritySlightly turbidFrom space: what the Copernicus satellites show
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.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.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.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.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.Water quality and cleanliness
Oxygen, pH and hardness, nutrients, pollution, wastewater treatment plants, landfills and contaminated sites nearby, groundwaterQuality indexGood quality67Water quality index
What water quality means for fish and fishing
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.Water and oxygen+1
What we know about it
Pollution−4
What we know about it
What we know about it
What we know about it
What we know about it
Watercourse, reservoir and bottom+1
What we know about it
Do not change the score
Water composition and pollution
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: nearest monitoring site
PAHs: 2 substances (not counted in the score)
Other sites on the same watercourse
Water chemistry, sediments and contaminated sites nearby
Water according to the atlas
Elements in river sediment
Trace elements in the stream water
Boreholes and groundwater analyzes
Environmental burdens and landfills
Groundwater
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 (3 stations)
Measured values, year 2025, sampling 23 Oct 2025 (2 samplings, the highest value of the year for each substance)
Measured values, year 2025, sampling 29 Apr 2025
Measured values, year 2025, sampling 29 Oct 2025 (2 samplings, the highest value of the year for each substance)
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.Ammonium
Nitrites
Nitrates
Oxygen
Water temperature
pH
Water hardness
Iron
Manganese
Chlorides
Sulfates
Conductivity
Metals and metalloids
Solvents and benzene
PAHs (combustion, petroleum substances)
How it affects fish and the water
About the fishing district and the watercourse
Location and length of the fishing district, character of the watercourse, river basin, the organization's description and historical satellite imagesRegionKošice Region58Location, character and river basin of fishing district Tisza
Location, area and nature protection
Characteristics
What this means for anglersexplanation of the bottom, vegetation, watercourse line and other data of this fishing district
River basin and reservoir
Reservoir depth (HydroLAKES)Average depth, volume and water retention time in the reservoir from the HydroLAKES database (WWF). The depth is estimated by a model from the surrounding terrain, so it is approximate.Historical images
Data reliability
Geology and geophysics
Rocks under the water, faults and springs, radon and natural radiation, magnetic field, earthquakes, geothermal energy, mines and deposits, landslidesGround under the water: geology, faults and radon
low 36.7%
medium 63.0%
high 0.3%
no data
0 – 1
1 – 2
2 – 3
3 – 4
4 – 5
5 – 7
7 – 35no data0 – 2020 – 40
40 – 6060 – 8080 – 100100 – 140
140 – 180
180 – 220
220 – 999
-1 217 – -1 000
-1 000 – -250
-250 – -200
-200 – -190
-190 – -180
-180 – -170
-170 – -160
-160 – -150
-150 – -140
-140 – -130
-130 – -120
-120 – -110
-110 – -100
-100 – -90
-90 – -80
-80 – -60
-60 – -40
-40 – -20
-20 – 0
0 – 10
10 – 20
20 – 30
30 – 40
40 – 50
50 – 70
70 – 100
100 – 150
150 – 200
200 – 250
250 – 300
300 – 400
400 – 500
500 – 600
600 – 700
700 – 800
800 – 900
900 – 1 000
1000 – 1 100
1100 – 1 130Values 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
Uranium (eU)
Thorium (eTh)
Potassium (K)
Gamma radiation
Magnetic anomaly (ΔT)
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.Nearest fault
Springs and outflows
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.Rock under the water
Heat underfoot
Deposits and ore occurrences
Landslides and slope deformations
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.Earthquakes nearby
Earthquakes nearbyTremors recorded within 150 km of the water in the last 30 days (GFZ GEOFON catalog).Nature and hazards at the water
Wildlife, birds and plants around the water, dangerous and invasive species, what to watch out forWildlife, 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.
WildlifeMayflies
Most records: Jun.
About the species
BirdMallard
Most records: May.
About the species
BirdGrey heron
Most records: May.
About the species
WildlifeDragonflies
Most records: Jun.
About the species
BirdCommon kingfisher
Most records: May.
About the species
BirdGreat egret
Most records: May.
About the species
BirdBlack stork
Most records: May.
About the species
WildlifeGrass snake
Most records: August.
About the species
WildlifeEurasian beaver
Most records: May.
About the species
WildlifeGreen frogs (water frogs)
Most records: April.
About the species
WildlifeCommon toad
Most records: April.
About the species
WildlifeEuropean pond turtle
Most records: April.
About the species
PlantYellow flag iris
Most records: May.
About the species
PlantYellow water lily
Most records: Jun.
About the species
PlantHornwort
Most records: August.
About the species
PlantCommon reed
Most records: Jun.
About the species
PlantBroadleaf cattail
Most records: Jun.
About the species
PlantCommon duckweed
Most records: Jun.
About the species
RiskWild boar
Most records: Jun.
How to protect yourself
RiskMosquitoes
Most records: May.
How to protect yourself
RiskGiant hogweed
Most records: August.
How to protect yourself
Photo credits
Other fishing districts nearby
Fishing districts on the same watercourse and the nearest fishing districts in the river basinFishing districts6Other fishing districts around Tisza
Conditions scoreBest window
AirPressure
Sunrise6:35Sunset15:55
Waxing crescent18% illuminated
Water typeKaprový
Beaches and bathing placesBeaches and bathing places · beach
0.0 kmSources
Clays and loams
Nobody has recorded a catch in this fishing district yetBe the first: after approval it will also appear here in the ranking.
Species in the plan1
Water of above-average suitability for carp and cyprinids
Stream zoneLevel of evidence: Partially supported
Water hardnessLevel of evidence: Hypothesis
Water acidity (pH)Level of evidence: Partially supported
MineralizationLevel of evidence: Hypothesis
Metals in sedimentLevel of evidence: Partially supported
dry groundwaterNDWI index
bare grounddense vegetationNDVI index
clearturbid0 to 90 FNU
littlea lot of chlorophyllNDCI index
sparsedense vegetationNDVI index
≈ 6.6 FNUSlightly turbid
NDCI -0.09Low chlorophyll
0 % of areaClean surface
0 % of areaNo ice
Slightly turbid water
Public data about this water hardly change the activity score.
Water hardnessLevel of evidence: Hypothesis
+1
Surface water quality (SHMÚ)Level of evidence: Angling practice
−1
Nitrogen in groundwater (SHMÚ)Level of evidence: Partially supported
−1
Harmful substances in groundwater (SHMÚ)Level of evidence: Partially supported
−1
Iron in groundwater (SHMÚ)Level of evidence: Partially supported
−1
Watercourse sizeLevel of evidence: Angling practice
+1
Malé TrakanyTisza, river km 3.0 · right at the fishing district
3 indicators in 20252022202320242025
Indicator2022202320242025
Nutrients and nitrogen
nitrites●standard not met●standard not met·standard met·standard met
Harmful organic substances
petroleum substances (NEL)●standard not met·standard met●standard not met·standard met
AOX (adsorbable organic halogens)●standard not met·standard met·standard met·standard met
Biology and bacteria
chlorophyll a●standard not met·standard met●standard not met●standard not met
phytoplankton abundance●standard not met·standard met●standard not met·standard met
saprobic index of bioseston·standard met●standard not met●standard not met·standard met
Indicator2022202320242025
PAHs (combustion and deposition)
benzo(a)pyrene●standard not met●standard not met●standard not met●standard not met
fluoranthene·standard met·standard met·standard met●standard not met
Velke Trakany-koloniaTrebišov district · borehole or well · 3.9 km from the fishing district
natural substances only2017 to 2025
Backa N-32Trebišov district · borehole or well · 7.5 km from the fishing district
substances from human activity2017 to 2025
Botany-koloniaTrebišov district · borehole or well · 7.6 km from the fishing district
natural substances only2017 to 2025
Fishing district number4-2800-1-1
Depth: Deeper, 3–6 m
Bottom: Sandy bottom
Bottom: Muddy bottom
Watercourse line: Straight line
Shade: Sunny, up to 10% shade
Vegetation: Willow
Vegetation: Poplar
Cross-channel structures: none
Water temperatureAn estimate from the air temperature of the last few days. The actual temperature may differ by 1 to 3 °C.
Water stageThere is no gauging station at this fishing district.
Weather and pressureA forecast model for the fishing district's coordinates, not a measurement on the bank.
Clarity, bloom and iceSentinel-2 satellite, last usable image 3 days ago.
Water chemistryQuality assessment from the nearest SHMÚ monitoring site.
Fish in the fishing districtThe fishing district's stocking plan. Nobody has recorded a catch here yet.
Rules and permitsThe act, the decree and the list of fishing districts. Check local exceptions in your permit.
Fishing district locationThe location is approximate, based on the description of the fishing district boundaries.
Geology
Radon risk
Uranium (eU)
Gamma radiation
Magnetics
