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Water reservoirs of Slovakia

Nádrže

Slovak reservoirs in 3D

Waters with a bottom model
477
Maximum depth
51m
Largest area
3,351ha
Total volume
1,786million m³

Reservoirs in brief

The portal has a 3D bottom model for 477 still waters, 214 of them reservoirs. VN Orava has the largest area (3,351 ha). The deepest is VN Ružín (51 m). You can switch the model between reservoirs; for each you can lower the water level and look at the bottom, the original river channels and the rocks beneath.

3D model of the bottom: VN Kolibabovce

Rotate, zoom, lower the water level and see the original river channels under the waterMaximum depth3,0 mArea1,6 ha

Reservoir bed

According to the fishing regulations

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 maximum depth is from the fishing regulations of the district. The shape of the bed is a model, so it does not include holes or submerged objects.

  • The dam was not found, so depths are derived from the distance to the shore only (less accurate).
  • The bank slope from the surrounding terrain is much gentler than the known maximum depth would suggest (the bed below the water is steeper than the bank above it).
Sources

Reliability B: depth from the fishing district rules.

Open the fishing district VN Kolibabovce

The largest and deepest reservoirs

Rankings by volume, area and depth. Click a name to switch the model.

Largest water volume

  1. 1.VN Liptovská Mara334 mil. m³
  2. 2.VN Zemplínska Šírava316 mil. m³
  3. 3.VN Orava295 mil. m³
  4. 4.VN Domaša174 mil. m³
  5. 5.Dunaj č. 3 – zdrž VD (Hrušov – Čunovo)89,7 mil. m³
  6. 6.VN Kráľová65,5 mil. m³
  7. 7.VN Starina64,6 mil. m³
  8. 8.VN Ružín55,5 mil. m³

Largest surface area

  1. 1.VN Orava3 351 ha
  2. 2.VN Zemplínska Šírava3 265 ha
  3. 3.Dunaj č. 3 – zdrž VD (Hrušov – Čunovo)2 681 ha
  4. 4.VN Liptovská Mara2 063 ha
  5. 5.VN Domaša1 432 ha
  6. 6.VN Kráľová1 110 ha
  7. 7.VN Nosice570 ha
  8. 8.VN Ružín360 ha

Deepest reservoirs

  1. 1.VN Ružín51 m
  2. 2.VN Bukovec II.51 m
  3. 3.VN Nová Bystrica51 m
  4. 4.VN Turček48 m
  5. 5.VN Málinec45 m
  6. 6.VN Starina44 m
  7. 7.VN Liptovská Mara38 m
  8. 8.VN Hriňová32 m

The area comes from the water outline. The volume and depth rankings include only reservoirs where these are known from a pre-flooding map, the literature or the district rules; estimates from the shape of the water are left out.

Vanished villages and hamlets under the water

What the pre-flooding maps show. In the model they appear as labels; after a click you see how much water is above them.Places29
  • VN Liptovská Mara38 m
    • Liptovská Mara
    • Paludza
    • Parížovce
    • Sokolče
    • Ráztoky
    • Čemice
    • Nežitovce
    • Sestrč
    • Nižné Dechtáre
    • Vyšné Dechtáre

    Original channels under the water: Váh

  • VN Orava28 m
    • Slanica
  • VN Domaša25 m
    • Veľká Domaša
    • Dobrá nad Ondavou
    • Trepec
    • Kelča
    • Valkov
    • Petejovce

    Original channels under the water: Ondava

  • VN Starina44 m
    • Starina

    Original channels under the water: Cirocha, Stružnica

  • VN Ružín51 m
    • Košické Hámre

    Original channels under the water: Hornád, Hnilec, Belá, Opátka

  • VN Nová Bystrica51 m
    • Riečnica
    • Harvelka

    Original channels under the water: Bystrica, Riečnica, Stanov potok

  • VN Málinec45 m
    • Hámor
    • Štavica
    • Chmelná

    Original channels under the water: Ipeľ, Smolná, Prierazka, Zlatno

  • VN Ružiná19 m
    • Ružiná pond

    Original channels under the water: Budinský potok

  • VVN Bešeňová12 m
    • Vrbie
    • Demčín

    Original channels under the water: Váh

  • VVN Ružín12 m
    • Ružín

    Original channels under the water: Hornád

  • VN Buková8,7 m
    • Old pond

The positions come from topographic maps 1 : 25,000 and 1 : 10,000 (National Geoportal, historical maps) and are verified against airborne laser scanning: today the reservoir surface lies where the village stood. Click a reservoir to switch the model.

All reservoirs with a bottom model

From the largest by volume. Each with its area, maximum depth and volume.Reservoirs214

Gravel pits, lakes and ponds with a bottom model

Other still waters whose bottom we can show in 3DWaters263

The 60 largest of 263 are shown. You will find the bottom model of the others on their fishing district page.

How the bottom model is made and how far to trust it

Three reliability levels and the sources the model is built from

No public bottom surveys exist for most Slovak reservoirs. We therefore build the model from several sources and say for each reservoir how far it can be trusted.

  • Spoľahlivosť A. The bottom is the original terrain from topographic maps made before flooding, or the maximum depth and volume are known from the literature.
  • Spoľahlivosť B. The maximum depth comes from the fishing district rules; the bottom shape is computed.
  • Spoľahlivosť C. Depths are an estimate from the slope of the banks and the shape of the water body.

The surrounding terrain comes from airborne laser scanning (DMR 5.0); the Sentinel-2 satellite tracks the colour of the surface and the extent of the water.