Lower Austria

Geography

With a land area of 19,186 km² (7,408 sq mi) situated east of Upper Austria, Lower Austria is the country's largest state. Lower Austria derives its name from its downriver location on the river Enns, which flows from the west to the east. Lower Austria has an international border, 414 km (257 mi) long, with the Czech Republic (South Bohemia and South Moravia) and Slovakia (Bratislava and Trnava Regions). The state has the second-longest external border of all Austrian states. It also borders the other Austrian states of Upper Austria, Styria and Burgenland as well as surrounding Vienna.

Lower Austria is divided into four regions, known as Viertel (quarters):

• Mostviertel (above the Vienna Woods)
• Industrieviertel (below the Vienna Woods)
• Weinviertel (below the Manhartsberg)
• Waldviertel (above the Manhartsberg)

These regions have different geographical structures. Whilst the Mostviertel is dominated by the foothills of the Limestone Alps with mountains up to 2,000 m (AA) (6,500 ft) high, most of the Waldviertel is a granite plateau. The hilly Weinviertel lies to the northeast, descends to the plains of Marchfeld in the east of the state, and is separated by the Danube from the Vienna Basin to the south, which in turn is separated from the Vienna Woods by a line of thermal springs (the Thermenlinie) running north to south.

Mountains

• Schneeberg (Klosterwappen; 2,076 m)
• Rax (Scheibwaldhöhe; 1,943 m; highest summit: Heukuppe; 2,007 m – Styria)
• Ötscher (1,893 m)
• Dürrenstein (1,878 m)
• Schneealpe (Ameisbühel; 1,828 m; highest summit: Windberg; 1,903 m – Styria)
• Hochkar (1,808 m)
• Gamsstein (1,774 m)
• Stumpfmauer (1,770 m)
• Göller (1,766 m)
• Hochwechsel (1,743 m)
• Gippel (1,669 m)
• Großer Sonnleitstein (1,639 m)
• Großer Zellerhut (1,639 m)
• Gemeindealpe (1,626 m)
• Scheiblingstein (1,622 m) (not to be confused with Scheiblingstein (2,197 m), which is in Styria)
• Drahtekogel (1,565 m)
• Sonnwendstein (1,523 m)
• Obersberg (1,467 m)
• Königsberg (1,452 m)
• Großer Sulzberg (1,400 m)
• Reisalpe (1,399 m)
• Gahns (1,380 m)
• Tirolerkogel (1,377 m)
• Türnitzer Höger (1,372 m)
• Unterberg (1,342 m)
• Traisenberg (1,230 m)
• Dürre Wand (1,222 m)
• Hohenstein (1,195 m)
• Eisenstein (1,185 m)
• Hohe Wand (1,132 m)
• Großer Peilstein (1,061 m)
• Weinsberg (1,041 m)
• Hocheck (1,036 m)
• Nebelstein (1,017 m)
• Eibl (1,007 m)
• Hohe Mandling (967 m)
• Jauerling (961 m)
• Hoher Lindkogel also named Eisernes Tor (834 m)
• Anninger (675 m)
• Buschberg (491 m)

Other mountains in Lower Austria may be found at Category:Mountains of Lower Austria.

Alpine passes

• Semmering (985 m)
• Wechsel (943 m)

The state border with Styria runs over both passes.

Rivers

Almost all of Lower Austria is drained by the Danube. The only river that flows into the North Sea (via the Moldau and the Elbe) is the Lainsitz in northern Waldviertel.

The most important rivers north of the Danube (on its left bank) are the Ysper, Kamp, Krems, Lainsitz, March and Thaya. South of the Danube (on its right bank) are the Enns, Ybbs, Erlauf, Melk, Pielach, Traisen, Schwechat, Fischa, Schwarza, Triesting, Pitten and the Leitha.

Lakes

• Ottenstein Reservoir (4.3 km²)
• Lunzer See (0.69 km²)
• Erlaufsee (0.56 km², of which about half lies in Lower Austria)
• Erlauf Reservoir
• Wienerwaldsee (0.32 km²)

Caves

Lower Austria is rich in natural caves; in all 4,082 have been recorded. Most of the caves have formed in limestone and dolomite rocks and are therefore called karst caves. Cavities also form in the marble of the Central Alps and the Bohemian Massif. Among the largest caves in Lower Austria are:

• Ötscherhöhlensystem (Ötscher): 27,003 m long; union of the Taubenloch and Geldloch
• Pfannloch (Ötscher): 5,287 m long
• Lechnerweidhöhle (Dürrenstein): 5,252 m long
• Trockenes Loch (Schwarzenbach an der Pielach): 4,510 m long
• Hermannshöhle (Kirchberg am Wechsel): 4,430 m long
• Eisensteinhöhle (Bad Fischau): 2,341 m long

The last two are open as show caves, along with the Allander stalactite cave, the Unicorn Cave, the Hochkarschacht, the Nixhöhle and the Ötschertropfsteinhöhle.

Land use