Namsen
Namsen (Southern Sami: Nååmesje) is the biggest river in Nord-Trøndelag county, in the central part of Norway. The 228-kilometre (142 mi) long river flows through the municipalities of Røyrvik, Namsskogan, Grong, Overhalla, and Namsos. It traditionally has been used for floating timber down from the forests to the town of Namsos, where the sawmills were located. Today parts of the Namsen are regulated by several dams.
Location
The river begins in springs in Børgefjell National Park, just over the border in Nordland county. This water feeds that large lake Store Namsvatnet. The Namsen river itself starts when the water passes through the dam on the northwest side of the lake Namsvatnet in the municipality of Røyrvik.
The river then travels through the Namdal valley towards the coast, ending at the town of Namsos where it flows into the Namsenfjorden, the same fjord into which the smaller river Årgårdselva flows. There are two major tributaries to the Namsen: Tunnsjøelva and Sanddøla.