Best lakes in Trnava are situated within a region of Slovakia known for its diverse natural landscapes, including the Little Carpathians and the Danubian Lowland. The area features a mix of natural and man-made water bodies, providing various recreational opportunities. These lakes contribute to the region's appeal for outdoor activities. The Trnava region offers a range of aquatic environments, from large reservoirs to smaller ponds.
Last updated: August 7, 2026
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I only drove past, it was very windy. Nice area. However, outside the cities, there can be no talk of cycle paths.
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The Gabčíkovo Reservoir (Slovak: Vodné dielo Gabčíkovo) is a colossal hydraulic engineering project on the Danube, which is much more than just a simple lake. It is the scene of one of the longest legal disputes in European history and a technical heavyweight.
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The dam on the Hrudky Stream is a popular spot, especially for fishing. There's also a buffet at the lake.
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Dams the Danube to form a small sea. Impressive.
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One of the greatest attractions of the eastern foot of the Little Carpathians is the "fairytale castle" of Smolenice. It is one of the most important buildings in Slovakia, modeled on the castles of central France and rebuilt in the Romantic style. The castle was built on the site of a 14th century castle. The castle protected the border passes in the Carpathians and the Bohemian Way. From 1777 it was owned by the Pálffys, who rebuilt it in the Romantic style in the second half of the 19th century. Smolenice Castle is dominated by a mighty tower with a viewing terrace. The steep roofs, towers, the fortified courtyard with a chapel and bastions, and the beautiful greenery complete the fairytale charm. Today the castle is the seat of the Slovak Academy of Sciences - the Slovak Academy of Sciences Congress Centre, and numerous conferences and symposia are held there throughout the year. Every Saturday, newlyweds stroll in and around the castle to take photos and film. During the summer months of July and August, the castle is open to the public. The romantic appearance of the castle is also reinforced by the surrounding park, which merges into a dense forest.
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The Great Rye Island (Slovakian Žitný ostrov, formerly Čalokez, German also Great Schuett, Hungarian Csallóköz) is a river island (or river island group) between the Danube, the Little Danube (Malý Dunaj) and the Vah (Váh) on the left side of the river of the main stream in southwest Slovakia. With a length of 84 km and a width of 15 to 30 km, the Danube forms a network of numerous meanders and tributaries, including the Little Danube. There are about 500 islands and islets between the arms of the river. The Great Rye Island begins near Bratislava at river kilometer 1865 and covers an area of 1,885.19 km².[1] When considered as a single island, it is the largest river island in Europe. The Great Rye Island is, in contrast to the Small Rye Island, exclusively on Slovak territory and administratively largely belongs to Okres Dunajská Streda in the Trnavský kraj in the center and west and to Okres Komárno in the Nitriansky kraj in the east. Parts of Bratislavský kraj (Okres Senec and Okres Bratislava II) are located in the extreme west of the island. The most important cities of the Big Rye Island are Komárno, Dunajská Streda and Šamorín. In addition, part of the capital Bratislava extends on the island. There is a significant Hungarian minority among the inhabitants of the area. The area is mainly used for agriculture and drinking water. Literally translated into German, the Slovak name means "rye island".
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The Gabčíkovo power plant is a run-of-river hydroelectric power plant in Slovakia at river kilometer 1836, utilizing the water power of the Danube. It is Slovakia's largest hydroelectric power plant and generates around 11% of the national electricity demand. As early as 1947, Stalin wanted to make the shallow floodplain between Győr and Bratislava navigable year-round. A canal was intended to enable Soviet warships to reach the borders of the then Eastern Bloc. In the 1950s, the first plans were drawn up but not realized. Following major floods in the area in the 1950s and 1960s, particularly in 1954 and 1965, Hungary and Czechoslovakia signed an agreement on September 16, 1977, for the construction of the Gabčíkovo–Nagymaros barrage system, the so-called "Budapest Agreement". A large power plant in Gabčíkovo was planned, shortly before it a reservoir of about 60 km² at Dunakiliti-Hrušov, and a second smaller one about 120 km downstream in Hungarian Nagymaros (as a compensation reservoir) at the Danube bend. This would have required the canalization or diking of the Danube over 200 km. The construction costs were to be borne equally by both states. Since the majority of the structures to be built were located on Czechoslovak territory, Hungary committed to erecting the Czechoslovak structures named in the agreement at its own expense. The generated electrical energy was also to be shared equally.[1] According to the original agreement, work was to be fully completed by 1991, with the full commissioning of the Gabčíkovo power plant expected in 1989 and the Nagymaros power plant a year later. As early as 1981, the Hungarian government wanted to suspend the project for financial reasons, and in 1983, Czechoslovakia and Hungary agreed to extend the work by four years. In 1984, Hungarian environmentalists (Duna Kör) reinforced the ecological concerns against this mammoth project through a petition. Concerns about drinking water and the preservation of floodplain forests, in particular, played a major role. After the end of the Kádár government in 1988, the new government in May 1989, following a scientific study of the project's ecological consequences, halted all work in Hungary without stating a reason, having signed a protocol to accelerate construction just three months earlier. At this time, 85 to 90 percent of the work on the Czechoslovak side was already completed. On October 31, the Hungarian Parliament decided to cease work on the Nagymaros power plant and authorized the government to negotiate an amendment to the 1977 Budapest Agreement. In 1993, both countries agreed to refer the matter to the International Court of Justice in The Hague. On September 25, 1997, the Court ruled that both countries had violated their legal obligations, Hungary in almost all points of the treaty. Czechoslovakia (later Slovakia) had the right to complete the construction, but not to put it into operation. The original treaty remained valid, and both states were to negotiate a new, more environmentally friendly solution. The ICJ stated in its decision that the agreement concluded between Hungary and Czechoslovakia was a treaty with territorial binding. For such a treaty, customary international law dictates that a successor state must assume the treaties of its territorial predecessor. Slovakia was therefore bound by Czechoslovakia's treaty with Hungary at the time. To resolve the dispute, representatives of both governments agreed on a framework agreement in March 1998. A real agreement has not been reached to this day, which had strained relations between Hungary and Slovakia for years.[7] In June 2017, a representative of the Slovak government sent a request to the ICJ to terminate the proceedings for an additional decision, which had been ongoing since 1998. The Hungarian side declared in July 2017 that it did not object to the Slovak request.
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The lakes in Trnava offer a variety of recreational activities. At Kunov Reservoir, you can swim, enjoy non-motorized boating, fish, and rent water bikes or paddleboards. It also has facilities for tennis, football, mini-golf, and beach volleyball. Kráľová Reservoir features a cycle path along its banks, perfect for cycling. Zelená Voda is excellent for swimming, windsurfing, kayaking, paddleboarding, and fishing, with additional land sports facilities and playgrounds. Dolné Dubové Lake is suitable for swimming and fishing (catch and release).
Yes, several lakes in the Trnava region are well-suited for families. Kunov Reservoir offers a sandy beach, a playground with a sandbox and trampoline, and various sports facilities. Zelená Voda is known for its hygienically clean water, making it safe for swimming for all ages, and provides playgrounds and beach bars. Kráľová Reservoir and Gabčíkovo Reservoir also have family-friendly amenities, including cycle paths.
For nature walks and birdwatching, the Trnavské rybníky (Trnava Ponds) are an excellent choice. This protected area is known for its rich natural biodiversity and is a significant locality for birdwatching, with up to 150 protected bird species observed. The surroundings feature remnants of floodplain forests and offer tranquil field roads and paths for peaceful walks.
Zelená Voda is highly recommended for swimming due to its hygienically clean water and suitability for all ages. Kunov Reservoir also offers a sandy beach and is suitable for swimming, providing a pleasant Mediterranean atmosphere in some areas. Dolné Dubové Lake's water is also suitable for swimming.
Yes, cycling is a popular activity around the lakes. Kráľová Reservoir features a dedicated cycle path along its banks. A cycling route also connects Kunov Reservoir with Senica, passing through scenic nature along the Teplica stream, ideal for cycling and inline skating. Gabčíkovo Reservoir also offers cycle ways.
Near some of the lakes, you can find historical landmarks. For instance, the View of Smolenice Castle offers a beautiful perspective of this significant building, which is modeled on central French castles and rebuilt in the Romantic style. The castle is open to the public during July and August.
Accommodation and dining options are available near some of the popular lakes. Around Kunov Reservoir, you can find cottages, a tourist hostel, restaurants, and buffets. Zelená Voda also offers a campsite for accommodation, along with beach bars.
Fishing is a popular activity at several lakes. At Kunov Reservoir, fishing is permitted. Dolné Dubové Lake is known for fish like carp, pike-perch, and pike, operating under a 'catch and release' policy. Zelená Voda also offers excellent conditions for fishing.
Yes, there are easy walking opportunities. The Trnavské rybníky (Trnava Ponds) feature field roads and paths that are ideal for leisurely walks. For more structured hiking, you can explore various routes in the region. For easy hikes, consider routes like the Nové Hory – Katarínka Forest Railway loop, which is an easy 3.4 km trail. You can find more options in the Easy hikes in Trnava guide.
For running enthusiasts, there are several trails in the vicinity of the lakes. Popular routes include the Sĺňava – Biskupický kanál loop from Piešťany (9.6 km, moderate) and various Leknové jazierka loops. More running options can be found in the Running Trails in Trnava guide.
The lakes in Trnava are surrounded by diverse natural features. You can find sandy beaches at Kunov Reservoir, and remnants of floodplain forests and rich biodiversity at Trnavské rybníky. Lakes like Červený Rybník are nestled within forests, offering scenic viewpoints. The region also features the Little Carpathians and the Danubian Lowland, contributing to varied landscapes.
Yes, there are facilities for boats. The Bačorina Marina in the quiet surroundings of Kráľová Reservoir offers parking for smaller vessels and a crane for launching boats up to 1.5 tons. Kunov Reservoir also offers rentals for non-motorized boats like water bikes and paddleboards.


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