
The Danube River is the second-longest river in Europe, rising in Germany's Black Forest mountains and flowing for approximately 1,770 miles (2,850 km) to its mouth on the Black Sea. Along its course, it passes through ten countries, including Austria and Hungary, and serves as a source of drinking water for around 20 million people. The river has played a significant role in the history and economic growth of the regions it flows through, including providing a vital trade route and navigation passage. The Danube is also known for its natural beauty, with many tourist spots along its banks, including national parks, nature reserves, and historic cities.
| Characteristics | Values |
|---|---|
| Length | 1,770 miles (2,850 km) or 1,785 miles (2,872 km) |
| Source | Donaueschingen, Germany, in the Black Forest |
| Mouth | The Danube Delta of Romania, at the Black Sea |
| Countries it passes through | Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Romania, Moldova, and Ukraine |
| Capitals it connects | Vienna (Austria), Budapest (Hungary), Belgrade (Serbia), and Bratislava (Slovakia) |
| Tourist spots | Wachau Valley, Nationalpark Donau-Auen, Gemenc, Naturpark Obere Donau, Kopački rit, Iron Gate, Danube Delta, and Srebarna Nature Reserve |
| UNESCO World Heritage Sites | Historic Centre of Vienna, Schönbrunn Palace, and Wachau Cultural Landscape |
| National Parks | Upper Danube Nature Park, Donauleiten Nature Reserve, Danube Floodplains National Park, Duna-Ipoly Nemzeti National Park, and Kopacki Rit Nature Park |
| Wine-growing areas | Wachau, Kremstal, Traisental, Kamptal, and Wagram |
| Wine varieties | Grüner Veltliner, Roter Veltliner, Riesling, Zweigelt, and Blaufränkisch |
| River basin size | 315,000 square miles (817,000 square km) or 228,000 square miles (590,000 square km) |
| Drinking water source | Yes, for about 20 million people |
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What You'll Learn
- The Danube flows through the Austrian Alps and the Western Carpathian Mountains
- The river is a source of drinking water for 20 million people
- The Danube is the second-longest river in Europe
- The river is home to world-class wines and viticulture
- The Danube Delta in Romania has been a UNESCO World Heritage Site since 1991

The Danube flows through the Austrian Alps and the Western Carpathian Mountains
The Danube River is the second-longest river in Europe, flowing for approximately 1,770 miles (2,850 km) through Central and Southeastern Europe. It rises in the Black Forest Mountains of Germany and empties into the Black Sea in Romania. Along its course, it passes through ten countries: Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Romania, Moldova, and Ukraine.
In its upper course, the Danube flows from its source in the Black Forest Mountains to the Hungarian Gates, a gorge in the Austrian Alps and the Western Carpathian Mountains. This section of the river is characterised by a narrow, rocky bed and scenic canyon-like valleys. The river remains a characteristic mountain river until Passau, where it begins to transition into a flatter landscape.
The middle course of the Danube runs from the Hungarian Gates Gorge to the Iron Gate in the Southern Romanian Carpathians. Here, the river exhibits two main features: the flatlands of the Little Alfold and Great Alfold plains, and the low peaks of the Western Carpathians and Transdanubian Mountains. The Danube enters the Little Alfold plain after emerging from the Hungarian Gates Gorge, where the river stream slows and loses its transporting capacity, leading to the formation of islands and the deposition of gravel and sand.
The lower course of the Danube flows from the Iron Gate to its mouth at the Black Sea. This section of the river is marked by a shallow, marshy riverbed and low terraces along both banks. The river continues to form islands as it accumulates sediment and takes on the waters of its major tributaries, including the Drava, the Tisza, and the Sava.
The Danube has played a significant role in the history, culture, and economy of the regions it flows through. It served as a vital commercial highway and transportation route for ancient empires, and today it continues to be an important trade artery and source of hydroelectric power. The river is also a popular destination for tourism and leisure cruises, offering well-established infrastructure for cycling, hiking, and exploration of the region's fascinating landmarks and natural spots.
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The river is a source of drinking water for 20 million people
The Danube River is a vital source of drinking water for around 20 million people. The river flows through ten countries in Central and Southeastern Europe, including Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova, and Ukraine. It originates in the Black Forest Mountains of western Germany and empties into the Black Sea via the Danube Delta in Romania and Ukraine.
The Danube has played a significant role in the history and development of the regions it passes through. Since ancient Roman times, it has been used as a transport route and a source of water. Today, it continues to be an important trade artery and a source of hydroelectric power. The river is also a popular tourist destination, with many natural and cultural attractions along its course, such as the Wachau Valley in Austria, Gemenc in Hungary, and the Iron Gate in Serbia and Romania.
In terms of drinking water, the Danube is a crucial source for many communities along its path. In Baden-Württemberg, Germany, almost 30% of the water for the area between Stuttgart, Bad Mergentheim, Aalen, and Alb-Donau comes from purified Danube water. Other German cities, such as Ulm and Passau, also rely partially on the river for their water supply. However, in Austria and Hungary, most water is drawn from ground and spring sources, with Danube water being used only in rare cases due to extensive pollution.
The International Commission for the Protection of the Danube River (ICPDR) is an organization that works to protect and improve the water quality of the Danube River Basin. They promote sustainable and equitable water management, including the conservation, improvement, and rational use of waters. The ICPDR has implemented various measures to monitor and improve water quality, such as the TransNational Monitoring Network (TNMN), which assesses physical, chemical, and biological conditions in the river and its tributaries. While the water quality in the Danube has improved over the years, there is still work to be done to meet the region's goals for water status.
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The Danube is the second-longest river in Europe
The Danube has played a significant role in the history and development of central and southeastern Europe. Its banks, lined with castles and fortresses, once formed the boundary between great empires, and its waters served as a vital commercial highway between nations. Today, it continues to be an important trade route and has been harnessed for hydroelectric power, contributing to the economic growth of cities along its banks, including Vienna (Austria), Budapest (Hungary), and Belgrade (Serbia).
The Danube is also a popular destination for tourism and leisure activities. The Danube Cycle Path runs almost the entire length of the river, offering diverse landscapes, beautiful castles, palaces, monasteries, and nature reserves. The river is also a source of drinking water for about 20 million people, although in Austria and Hungary, water is primarily drawn from ground and spring sources.
The Danube region boasts a rich cultural heritage, with traditional dishes such as Wiener schnitzel in Austria and goulash in Hungary. The valley is also renowned for its world-class wines, with viticulture in the region dating back nearly 2,000 years. Important tourist spots along the river include the Wachau Valley, the Nationalpark Donau-Auen in Austria, Gemenc in Hungary, and the Srebarna Nature Reserve in Bulgaria.
The Danube is not just a river but a vital lifeline that has shaped the history, culture, and development of the nations it flows through, connecting the Balkan region to the rest of Europe.
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The river is home to world-class wines and viticulture
The Danube River is the second-longest river in Europe, rising in Germany's Black Forest mountains and flowing for some 1,770 miles (2,850 km) to its mouth on the Black Sea. Along its course, it passes through ten countries: Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Romania, Moldova, and Ukraine.
In Austria, the wine regions of Kremstal, Kamptal, and Wachau are located along the Danube and are known for their exceptional white wines, particularly Riesling and Grüner Veltliner. The steep vine terraces in these regions stretch over rolling hillsides dotted with medieval towns and castle ruins. The city of Vienna, with its famous heurige (wine taverns), is also a highlight for wine lovers, offering a unique opportunity to taste authentic Viennese food and wine in a cozy atmosphere.
As the Danube flows through Hungary, it marks the border between the country and Croatia and Serbia. Here, hearty red wines are prevalent, but it is also worth trying the local white wine variety, Graševina, better known internationally as Welschriesling. Bulgaria, which the river also flows through, is home to the Bononia Estate in the village of Koshava, which produces a beautifully refreshing, silky, strawberry-scented red wine called Gamza.
The Danube's wine culture is deeply intertwined with the river's history, with ancient Romans navigating the river and fostering the development of viticulture in the region. Today, the Danube remains an important trade route and a significant attraction for wine lovers and those seeking to immerse themselves in the rich history and culture of the region.
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The Danube Delta in Romania has been a UNESCO World Heritage Site since 1991
The Danube River is the second-longest river in Europe, flowing for approximately 1,785 miles (2,872 kilometres) from its source in Germany's Black Forest to its mouth in the Black Sea. Along its course, it passes through ten countries: Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Romania, Moldova, and Ukraine.
The Danube Delta boasts the third-largest biodiversity in the world, surpassed only by Australia's Great Barrier Reef and the Galapagos Archipelago in Ecuador. It is home to more than 5,500 plant and animal species, making it unmatched in the Northern Hemisphere. The delta provides a habitat for over 300 bird species and 45 freshwater fish species, earning its reputation as a natural haven.
The delta's remote location adds to its allure, as it is only accessible by ferry boat or guided tours that navigate the ever-shifting marshes and waterways. This seclusion ensures that visitors can enjoy the serene surroundings without the intrusion of crowds. The Danube Delta is also notable for its serenity, with only 15,000 people inhabiting its 28 villages and the port town of Sulina.
The Danube Delta's significance extends beyond its ecological value. It has played a pivotal role in the settlement and political evolution of central and southeastern Europe. The river's banks, lined with castles and fortresses, once formed the boundary between great empires. Moreover, the Danube served as a vital commercial highway, facilitating trade between Europe and Asia. The delta's port, Chilia Veche, founded by the Greeks, was once a bustling hub for trade with Asia.
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Frequently asked questions
The Danube is the most important waterway in Austria. The part of the river flowing through Lower Austria is 260 kilometres long and boasts some of the most scenic sections of this river valley. It is a significant tourist destination, with sun-drenched vineyards, orchards, mysterious alluvial forests, and imposing monasteries and castles. The Danube flows through the Wachau Valley, the Nationalpark Donau-Auen, and the Nibelungengau in the west.
The Hungarian Danube traverses 417 kilometres. It forms the border with Slovakia in the northwest and then flows south. The Danube is one of the two most important waterways in Hungary, the other being the Tisza, a major Danube tributary river. The Danube flows past Budapest, the City of Spas, and across the vast Great Alfold plain. The river is also home to the Danube-Dráva National Park, which provides international protection for 500 square kilometres of the riverine habitat of the Danube and Dráva rivers.
The Danube River Basin is an organisation called the International Commission for the Protection of the Danube River (ICPDR). It consists of 14 member states (Germany, Austria, the Czech Republic, Slovakia, Slovenia, Hungary, Croatia, Bosnia and Herzegovina, Serbia, Bulgaria, Romania, Moldova, Montenegro, and Ukraine) and the European Union. The ICPDR was established in 1998 to deal with the whole Danube river basin, which includes tributaries and groundwater resources.










































