Karasjohka river joins Anarjohka

Inarijoki

Inarijoki is a tributary of Tana River. It runs along the Finnish–Norwegian border....

 downstream of Karigasniemi and forms the famous salmon fishing Tana river

Tana River (Norway)

Tana river , is a long river in Sápmi, in the Norwegian county of in Finnmark and the Lapland of Finland. The Sámi name means "Great River". The main tributaries of Tana are Anarjohka and Karasjohka....

 (in Sámi: Deatnu). Karasjok

Karasjok

Kárášjohka or is a village and municipality in Finnmark county, Norway. The administrative centre of the municipality is the village of Karasjok.-Name:Karasjok is a Norwegianized form of the Sámi name Kárášjohka...

 municipality in Finnmark

Finnmark

or Finnmárku is a county in the extreme northeast of Norway. By land it borders Troms county to the west, Finland to the south and Russia to the east, and by water, the Norwegian Sea to the northwest, and the Barents Sea to the north and northeast.The county was formerly known as Finmarkens...

, Norway

Norway

Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

 is situated along the upper river basin of the Deatnu / Tana river, and its tributaries Anarjohka and Karasjohka, and includes large tracts of the high plateau of Finnmarksvidda

Finnmarksvidda

Finnmarksvidda or the Finnmark plateau; Finnmark highland, is Norway's largest plateau, with an area greater than 22,000 km². It lies at 300–500 meters above sea level...

, which the Karasjohka drains.

The Karasjohka river drains a watershed

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

of 4948 km².