The Gottleuba is a small river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 in the Czech Republic

Czech Republic

The Czech Republic is a landlocked country in Central Europe. The country is bordered by Poland to the northeast, Slovakia to the east, Austria to the south, and Germany to the west and northwest....

 and Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

, left tributary of the Elbe

Elbe

The Elbe is one of the major rivers of Central Europe. It rises in the Krkonoše Mountains of the northwestern Czech Republic before traversing much of Bohemia , then Germany and flowing into the North Sea at Cuxhaven, 110 km northwest of Hamburg...

. It source is in the eastern part of the Ore Mountains, north of Ústí nad Labem

Ústí nad Labem

Ústí nad Labem is a city of the Czech Republic, in the Ústí nad Labem Region. The city is the 7th-most populous in the country.Ústí is situated in a mountainous district at the confluence of the Bílina and the Elbe Rivers, and, besides being an active river port, is an important railway junction...

. After a few km it crosses the Czech-German border, and flows the rest of its 34 km in Saxony

Saxony

The Free State of Saxony is a landlocked state of Germany, contingent with Brandenburg, Saxony Anhalt, Thuringia, Bavaria, the Czech Republic and Poland. It is the tenth-largest German state in area, with of Germany's sixteen states....

. It passes the Gottleuba Dam

Gottleuba Dam

The Gottleuba Dam is the second largest dam in Saxony. It serves as a reservoir for supply of water for Pirna and provides flood protection, but energy production is small. The dam was built between 1965 and 1974 and is located between Bad Gottleuba and Erzgebirge. It was under construction in...

 and the town Bad Gottleuba-Berggießhübel

Bad Gottleuba-Berggießhübel

Bad Gottleuba-Berggießhübel is a spa town in the district Sächsische Schweiz-Osterzgebirge in the Free State of Saxony, Germany. The municipality borders the Czech Republic in the south....

, and flows into the Elbe

Elbe

The Elbe is one of the major rivers of Central Europe. It rises in the Krkonoše Mountains of the northwestern Czech Republic before traversing much of Bohemia , then Germany and flowing into the North Sea at Cuxhaven, 110 km northwest of Hamburg...

 in Pirna

Pirna

Pirna is a town in the Free State of Saxony, Germany, capital of the administrative district Sächsische Schweiz-Osterzgebirge. The town's population is over 40,000. Pirna is located near Dresden and is an important district town as well as a Große Kreisstadt...

. In July 1927, there was a flash flood

Flash flood

A flash flood is a rapid flooding of geomorphic low-lying areas—washes, rivers, dry lakes and basins. It may be caused by heavy rain associated with a storm, hurricane, or tropical storm or meltwater from ice or snow flowing over ice sheets or snowfields...

in the river due to heavy rain.