Černá Nisa is a

river A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...

Liberec District Liberec District () is a district in the Liberec Region of the Czech Republic. Its capital is the city of Liberec. Administrative division Liberec District is divided into three administrative districts of municipalities with extended competence: ...

in the

Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...

. It is 14.2 km long. Its

drainage basin A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...

has an area of 27

km² The square kilometre (square kilometer in American spelling; symbol: km2) is a multiple of the square metre, the SI unit of area or surface area. In the SI unit of area (m2), 1 km2 is equal to 1M(m2). 1 km2 is equal to: * 1,000,000 squar ...

Geography

It originates east of Olivet Mount in the

Jizera Mountains Jizera Mountains (), or Izera Mountains (; ), are part of the Western Sudetes on the border between the Czech Republic and Poland. The range got its name from the Jizera (river), Jizera River, which rises at the southern base of the Smrk (Jizera), ...

and has a predominantly torrential nature with a considerable drop and a rocky river bed. It flows into

Lusatian Neisse The Lusatian Neisse (; ; ; Upper Sorbian: ''Łužiska Nysa''; Lower Sorbian: ''Łužyska Nysa''), or Western Neisse, is a river in northern Central Europe.

from the right in

Stráž nad Nisou Stráž may refer to places in the Czech Republic: *Stráž (Domažlice District), a municipality and village in the Plzeň Region *Stráž (Tachov District), a market town in the Plzeň Region *Stráž nad Nežárkou, a town in the South Bohemian ...

Usage

The Bedřichov Water Reservoir stands on its upper course. Another small water reservoir is in Rudolfov below the

hydroelectric power plant Hydroelectricity, or hydroelectric power, is Electricity generation, electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity, almost 4,210 TWh in 2023, which is more than all other Renewable energ ...

fed by an underground channel from the Bedřichov Dam. It is used for boating from Rudolfov to Kateřinky. It is a

trout Trout (: trout) is a generic common name for numerous species of carnivorous freshwater ray-finned fishes belonging to the genera '' Oncorhynchus'', ''Salmo'' and ''Salvelinus'', all of which are members of the subfamily Salmoninae in the ...

river used in the past by many industrial enterprises in Kateřinky.

References

External links

{{Commons
Photos of Černá Nisa
Tributaries of the Lusatian Neisse