Stjørdalselva is a 70 kilometres (43.5 mi) long 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...

 that reaches from near the Norwegian

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...

–Swedish

Sweden

Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

 border down the Stjørdalen

Stjørdalen

Stjørdalen is a valley and a traditional district in Nord-Trøndelag county, Norway. It makes up the southern part of the Inntrøndelag region....

 valley through the municipalities of Meråker

Meråker

Meråker is a municipality in Nord-Trøndelag county, Norway. It is part of the Stjørdalen region. The administrative centre of the municipality is the village of Midtbygda which is about west of Storlien in Sweden and east of Stjørdalshalsen in Stjørdal. Other villages in Meråker include Gudåa,...

 and Stjørdal

Stjørdal

is a municipality in Nord-Trøndelag county, Norway. It is part of the Stjørdalen region. The administrative centre of the municipality is the town of Stjørdal, also called Stjørdalshalsen...

 before entering the Trondheimsfjord

Trondheimsfjord

The Trondheimsfjord , an inlet of the Norwegian Sea, is Norway's third longest fjord at long. It is located in the west central part of the country, and it stretches from Ørland in west to Steinkjer in north, passing the city of Trondheim on its way...

. The mouth is located between the villages of Stjørdalshalsen

Stjørdalshalsen

Stjørdalshalsen is a town and the administrative centre of the municipality of Stjørdal in Nord-Trøndelag county, Norway. It is located between the rivers Stjørdalselva and Gråelva, and their mouth into the Trondheimsfjord.The town has a population of 10,779. The population density of the town is...

 and Hell

Hell, Norway

Hell is a village in the Lånke area of the municipality of Stjørdal in Nord-Trøndelag county, Norway. It is located in the western part of the municipality, about south of the municipal center of Stjørdalshalsen. The village has a population of 1,418...

 just south of Trondheim Airport, Værnes

Trondheim Airport, Værnes

Trondheim Airport, Værnes is an international airport located in Stjørdal, east of Trondheim, Norway. Operated by the state-owned Avinor, it shares facilities with Værnes Air Station of the Royal Norwegian Air Force. In 2010, the airport had 3,521,734 passengers and 55,747 air movements,...

. The mouth of the river was moved to allow the runway to expand into the delta.

The European route E14

European route E14

European route E 14 is a road part of the International E-road network. It begins in Trondheim, Norway and ends in Sundsvall, Sweden. The road is in length....

 highway and the Meråker Line railway follow the river from its source the entire length of the river.