Plizio Visual Lab
Sió Canal

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The Sió Canal is one of Hungary's most critical hydraulic engineering systems, serving as the sole artificial connection between Lake Balaton and the Danube River. Its primary function is to regulate the water level of Lake Balaton and discharge excess water in a controlled manner via the sluice system in Siófok. The history of water management in the area dates back to Roman times, when Emperor Galerius initiated the first canalization efforts in the 3rd century AD. The modern canal was conceived in the 19th century under the leadership of István Széchenyi and further developed throughout the 20th century. Stretching approximately 120 kilometers, it traverses Somogy, Fejér, and Tolna counties. Beyond its hydrological importance, the canal supports diverse wildlife and is a popular destination for anglers and kayakers seeking the tranquil natural landscapes along its banks.
- Location: Hungary
- Nearby: Tamási (27 km)
Best time to visit & climate
The most pleasant time to visit is Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | -1 | 1 | 6 | 12 | 17 | 21 | 24 | 23 | 18 | 12 | 6 | 0 |
| Rain mm | 38 | 44 | 40 | 37 | 68 | 71 | 61 | 59 | 62 | 54 | 44 | 44 |
📋 Practical info
Geography
Facts
- The total length of the canal is approximately 121 kilometers.
- The first modern sluice at Siófok was inaugurated in 1863.
- The Sió Canal joins the Danube River near the settlement of Bogyiszló.
- Roman Emperor Galerius ordered the first canal cut in 292 AD.
- The canal is navigable for smaller vessels when water levels are adequate.
- It flows through the diverse landscapes of Mezőföld and the Tolna Hills.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
© OpenStreetMap contributors · OpenRouteService
Sights in the town Sió Canal (1)
Sights nearby
Frequently asked questions
What is the function of the Sió Canal?
Is there a bike path along the canal?
Is fishing allowed on the Sió Canal?
Is the canal navigable?
Where does the Sió Canal end?
Sió Canal: where is it located?
Sió Canal: when is the best time to visit?
Sió Canal: why is it worth visiting?































