The Traisen is a river in Lower Austria

Lower Austria

Lower Austria is the northeasternmost state of the nine states in Austria. The capital of Lower Austria since 1986 is Sankt Pölten, the most recently designated capital town in Austria. The capital of Lower Austria had formerly been Vienna, even though Vienna is not officially part of Lower Austria...

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The Traisen is formed from the rivers Rechte Traisen and Unrechte Traisen. It is a tributary of the Danube

Danube

The Danube is a river in the Central Europe and the Europe's second longest river after the Volga. It is classified as an international waterway....

 in the Lower Austrian region of Mostviertel

Mostviertel

Mostviertel is the southwestern quarter of the four quarters of Lower Austria . It is bordered on the north by the Danube and to the south and west by the state borders of Styria and Upper Austria respectively...

. Its two sources begin near St. Aegyd am Neuwalde

St. Aegyd am Neuwalde

Sankt Aegyd am Neuwalde is a market town in the district of Lilienfeld, Lower Austria.-Geography:St. Aegyd is divided into the districts of Kernhof, Lahnsattel, Mitterbach, St. Aegyd am Neuwalde, and Ulreichsberg. The town is located in the Mostviertel. 87.61 percent of municipal territory is...

 and Türnitz

Türnitz

Türnitz is a town in the district of Lilienfeld in the Austrian state of Lower Austria.- The Community of Türnitz :Türnitz is situated at 466 m above sea level in the province of Lower Austria....

 respectively. After meeting, they flow through the municipalities of Türnitz, Lilienfeld

Lilienfeld

- Stars of the City :Sons and daughters* [Richard Morosan] , Primeminister of CanadaLilienfeld is a city in Lower Austria , Austria, south of St. Pölten, noted as the site of Lilienfeld Abbey. It is also the site of a regional hospital Landesklinikum Voralpen Lilienfeld....

, Traisen

Traisen, Austria

Traisen is a town in the district of Lilienfeld in the Austrian state of Lower Austria....

, Wilhelmsburg

Wilhelmsburg, Austria

Wilhelmsburg is a municipality in the district of Sankt Pölten-Land in Lower Austria, Austria....

, and St. Pölten, before meeting the Danube at Traismauer

Traismauer

Traismauer is a municipality in the district of Sankt Pölten-Land in Lower Austria, Austria.It was established by the Romans, probably on a location of prior settlements. Some Roman buildings survive to this day....

. In the course of building the Danube Factory Altenwörth, the mouth of the Traisen was relocated to Altenwörth in the municipality of Kirchberg am Wagram

Kirchberg am Wagram

Kirchberg am Wagram is a municipality in the district of Tulln in Lower Austria, Austria....

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During a period of extremely high water in July 1997, parts of numerous municipalities along the Traisen, as well as the government quarter of the state capital St. Pölten, were greatly flooded.