Watercourse

Parná

Váh basinCarpSalmonid – trout
fishing districts
2
fishing district length
26,3km
region
Trnava Region
  • Carp12,3 km1 fishing district
  • Salmonid – trout14,1 km1 fishing district
Aerial image of watercourse Parná with the line highlighted
Blue line: course of the watercourse (approximate). Orthophoto mosaic of Slovakia © GKÚ Bratislava, CC BY 4.0Google Maps

By the water now

Today on the Parná watercourse

Fishing conditions score, the best window of the day and fishing districts from the best conditions

Average of the watercourse's fishing districts

Low activity · average of 2 fishing districts

The number in the header is an estimate for the middle of the watercourse based on weather and measurements. The average of the fishing districts also counts satellite data, shading and geology of each district.
  • Very high0
  • High0
  • Average1
  • Low1

Best window today

15:00–17:00

Parná č. 2, window score 44.

The score is an estimate of conditions based on weather, water and surroundings, not a bite forecast. Recalculated at 12:04.

Map and fishing districts of the watercourse

The course of the watercourse and its fishing districts. You can switch the line color to today's conditions, quality or any other parameter.

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

1445fishing districts
Pick a category to narrow the selection. Next to each option you can see how many fishing districts remain.
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    Water state on the watercourse

    Measurement of water level, temperature and flow, weather by the watercourse and status from satellites

    Water levels on the watercourse

    StationStatusChangeTemperature
    Horné Orešany5 cm3,5 °C
    Source: SHMÚUpdated 7 Nov 2026 11:58

    Elevation profile of the watercourse

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

    Gentle gradient The current is noticeable, with shallows and slacks alternating. A transition between a lowland and a foothill watercourse.

    1201401601802002200 km5 km10 km15 km20 kmNo. 2No. 1
    Elevation profile of the watercourse: from 206 to 134 m a.s.l. over 24.6 km.
    Fishing districts in order from the highest (left) to the lowest. There may be a section without a fishing district between districts; it is not displayed.
    Highest point
    207 m a.s.l.
    Lowest point
    133 m a.s.l.
    Fall of the fishing districtsFallThe difference in altitude between the upper and lower end of the fishing district in metres. The greater the fall over a shorter length, the faster the water.
    74 m
    Average gradientWatercourse gradientFall per kilometre in per mille (‰, metres per kilometre). Up to 2 ‰ is a slow lowland river, 5 to 10 ‰ a foothill river (grayling, trout), above 10 ‰ a fast stream.
    3,0 ‰
    SinuositySinuosityThe length of the watercourse divided by the straight-line distance between its ends. 1.0 is a straight watercourse; above 1.3 it meanders strongly. Meanders create pools under the banks and shallows in the reaches between.
    1,10

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

    Terrain in 3D

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    Historical images

    Changes in the surroundings and nature from 2017 to 2023: how the banks, vegetation and landscape around the water change. The images switch automatically; you can also browse them by hand.

    Aerial image of watercourse Parná from 2017
    2017imaged 17 May 2017
    Aerial image of watercourse Parná from 2020
    2020imaged 28 Aug 2020
    Aerial image of watercourse Parná from 2023
    2023imaged 28 May 2023

    Orthophoto mosaic of Slovakia © GKÚ Bratislava, NLC Zvolen. The year and day of imaging depend on the location, so individual years may differ in season and weather.

    Water pollution on the Parná watercourse

    Water quality according to SHMÚ, wastewater treatment plants near the fishing districts and groundwater nearby

    Surface water near the fishing districtsnearest SHMÚ monitoring site, 2025

    2 of 2 of the watercourse's fishing districts with SHMÚ data have an unmet standard at the nearest site in at least one indicator.

    • 1 to 2 indicators2

    Most polluted fishing districtsall with an unmet standard

    • Parná č. 2Parná · standard not met in 1 of 4 years2 indicators
    • Parná č. 1Parná · standard not met in 2 of 4 years1 indicator

    Problem treatment plants near the fishing districts1 treatment plant within 2 km of the fishing district

    • COV Zelenecload 102%0,9 km

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

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

    • nitrates 25 to 50 mg/l1
    • harmful substances above the standard at at least one station (metals, pesticides, PFAS, solvents)1

    Highest nitrates

    Watercourse profile from source to mouthnumber of unmet indicators in 2025 at SHMÚ sites

    01234Horné Orešany, rkm 22.7: 2 indicators (2022)Zeleneč, rkm 1.5: 1 indicator (2023)rkm 23 (upper course)rkm 2 (towards the mouth)
    Show sites in the table (2)
    • Horné Orešanyriver km 22.72 indicators
    • Zelenečriver km 1.51 indicator
    • standard not met
    • no unmet standard
    • site not in the yearbook

    Source: SHMÚ (yearbooks on surface and groundwater quality), the register of wastewater treatment plants from VÚVH and the EEA. A SHMÚ site is assigned to a fishing district by the same watercourse name and by distance; the yearbook lists the sites that failed the standard, so a missing site is not proof of clean water.

    Organizations and location

    Who manages the fishing districts and where they are

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

    1. Trnava2 fishing districts · 26 km23Parná č. 236

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