Namsen

Namsen (Norwegian) or Nååmesje (Southern Sami) is one of Norway's longest rivers, located in Trøndelag county in the country's central region. Before emptying into the Namsenfjorden, the 228-kilometer-long river flows through the municipalities of Røyrvik, Namsskogan, Grong, Overhalla, and Namsos. The Namdalen region is named after the river. Traditionally, the river was used to transport timber from the forests to the town of Namsos, where the sawmills were located. Several dams now regulate parts of the Namsen.

The river starts in the springs of Børgefjell National Park, just across the border in Nordland county. This water is used to irrigate the large lake Store Namsvatnet. The Namsen river begins when water flows through the dam on the northwest side of Lake Namsvatnet in the municipality of Røyrvik.

The river then flows through the Namdalen valley towards the coast, ending at Namsos where it flows into the Namsenfjorden, which also contains the smaller river Årgårdselva. The Namsen has two major tributaries: Tunnsjøelva and Sanddøla.

The total watershed area is approximately 6,298 square kilometers (2,432 square miles), and the water discharges into the fjord at Namsos at approximately 285 cubic metres per second (10,100 cu ft/s).

Length: 228 km (142 mi)