Water depth
Which reservoirs in Slovakia are the deepest?
- Fishing districts in the selection
- 14
- Watercourses and water bodies
- 14
- Deepest reservoir
- VN Nová Bystrica
- Value
- 33 m
What the data show
The depth of a reservoir decides where fish hide from the heat in summer and from the frost in winter. In a deep reservoir the water near the bottom is cooler, and fish have somewhere to go. A shallow one overheats in summer and risks freezing through in winter. From the database of reservoir depths (HydroLAKES) we assigned the average depth to the fishing districts on reservoirs and lakes.
A deep reservoir (above 8 m) occurs at 14 fishing districts. The deepest is near the Vodárenská nádrž Nová Bystrica fishing district (33 m), followed by VN Ružín (29 m) and VN Bukovec II. (27 m).
How to read these numbers and what they do not say
Depth is an average value estimated by a model, not a sonar measurement. The deepest spot is usually several times deeper than the average. When fishing you can find it with a fish finder or from a bottom map.
How many fishing districts belong to which class
Number of fishing districts (out of 1,400 with data). Click to open the map with this filter.
Where to find it on the map
The filter is on, and you can change it
Detailed filtersregion, district, riverbed, depth, shading, satellites, water chemistry and pollution, fish, geology
Move the map with two fingers. In full-screen mode one finger is enough.
The score is an estimate of conditions based on weather, water and surroundings, not a bite forecast. For each fishing district you can see what it is made of, how well it is supported by data and where the data comes from.
The line color of a fishing district corresponds to the value “Deepest reservoirs (HydroLAKES)”. The filter “deep reservoir, above 8 m” is on; in the Filters menu you can adjust it, and in the Map color menu you can change the value by which the lines are colored. Fishing districts without data are gray.
Try looking for
Ready-made filter combinations: click to open the map with the number of fishing districts
- Deep carp reservoirs9 fishing districtsCarp fishing districts with a deep reservoir.
- Medium-deep reservoirs42 fishing districtsDepth 3 to 8 m: places that are cool enough in summer and do not freeze through in winter.
- Shallow reservoirs1 fishing districtUp to 3 m: they heat up quickly and become heavily overgrown.
Ranking of fishing districts
The first 25 fishing districts in the selection
- Vodárenská nádrž Nová BystricaVN Nová Bystrica · Žilina Region33 m
- VN RužínKošice Region29 m
- VN Bukovec II.Košice Region27 m
- Vodárenská nádrž MálinecVN Málinec · Banská Bystrica Region25 m
- Vodárenská nádrž StarinaVN Starina · Prešov Region25 m
- Galovanská zátokaŽilina Region20 m
- Sokolčianska zátokaŽilina Region20 m
- VN Liptovská MaraŽilina Region20 m
- VN DomašaPrešov Region16 m
- VN RužináBanská Bystrica Region11 m
- VN HričovŽilina Region11 m
- VN KrpeľanyŽilina Region10 m
- VN Palcmanská MašaKošice Region9 m
- Čierny Váh č. 2Black Váh · Žilina Region8 m
Ranking of streams
Greatest average depth across the fishing districts of the stream. Streams with at least two fishing districts are counted; individual areas are in the ranking of fishing districts.
- VN Nová BystricaVáh basin · 1 of 2 fishing districts with a deep reservoir33 m
- VN Bukovec II.Bodrog and Hornád basin · 1 of 2 fishing districts with a deep reservoir27 m
- VN MálinecHron basin · 1 of 2 fishing districts with a deep reservoir25 m
- VN StarinaBodrog and Hornád basin · 1 of 2 fishing districts with a deep reservoir25 m
- Black VáhVáh basin · 1 of 3 fishing districts with a deep reservoir8 m
River basins and regions
Share of fishing districts with a deep reservoir
River basins
- Bodrog basin and Hornád5 of 332 fishing districts with a deep reservoir (2%)
- Váh basin7 of 491 fishing districts with a deep reservoir (1%)
- Hron basin2 of 268 fishing districts with a deep reservoir (1%)
- Danube basin0 of 309 fishing districts with a deep reservoir (0%)
Regions
- Žilina Region7 of 191 fishing districts with a deep reservoir (4%)
- Košice Region3 of 159 fishing districts with a deep reservoir (2%)
- Banská Bystrica Region2 of 196 fishing districts with a deep reservoir (1%)
- Prešov Region2 of 190 fishing districts with a deep reservoir (1%)
- Nitra Region0 of 183 fishing districts with a deep reservoir (0%)
- Trnava Region0 of 196 fishing districts with a deep reservoir (0%)
- Bratislava Region0 of 117 fishing districts with a deep reservoir (0%)
- Trenčín Region0 of 153 fishing districts with a deep reservoir (0%)
Frequently asked questions
Why is depth important?
Deep water is cooler in summer and warmer in winter than the surface, so fish have more stable conditions. Depth is also counted in the water rating for the district type.
Where does the figure come from?
From the global database of reservoirs and lakes HydroLAKES, which estimates the average depth. It is not a local survey.
More discoveries
Where the data come from and what they do not say
Data and methods used:
- HydroLAKES: depth and area of reservoirs and lakes
What this data does not tell you. The measurements come from stations near the fishing district and may be old; the model estimates (stream zone, depth, hardness) are only approximate. The ranking is about the water, not about the fish: it does not say whether or which fish are in the fishing district, nor what the fishing rules are. A district without data is not in the ranking, even though it may have excellent water.
Water quality in a stream is assessed by the SHMÚ yearbooks, see The cleanest water in Slovakia.