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The Namsen near Kvatningen in the municipality of Overhalla, about 10 km from its confluence with the Namsenfjord

The Namsen near Kvatningen in the municipality of Overhalla, about 10 km from its confluence with the Namsenfjord

Data
Water code NO : 139th time
location Trøndelag ( Norway )
River system Namsenvassdraget
Drain over Namsen → Atlantic Ocean
source At Røyrvik
muzzle At Namsos in the Namsenfjord coordinates: 64 ° 27 '28 "  N , 11 ° 30' 33"  E 64 ° 27 '28 "  N , 11 ° 30' 33"  E
Mouth height 0  m

length 228 km
Catchment area approx. 6.298 km²
Drain MQ
 155 m³ / s
Small towns Namsos
Communities Røyrvik , Namsskogan , Grong , Overhalla , Namsos

The Namsen ( South Sami : Nååmesje ) is a river in Trøndelag in Norway . It arises near the Swedish border in the area of ​​the municipality of Røyrvik , where it forms the drain of Lake Store Namsvatn . It flows through the Namdalen valley for a length of 228 kilometers, essentially in southern and western directions, before it flows into the Namsenfjord in Namsos . Its two main tributaries are Bjøra and Sanddøla . The river flows through the municipalities of Røyrvik, Namsskogan , Grong , Overhalla and Namsos.

Småblank is a salmon fish that is only found in Namsen.
The Namsen as a young river

The water flow of the Namsen varies greatly, it often falls below 200 m³ / s, but also reaches over 1000 m³ / s. It is one of the best rivers in Norway for fishing. The main fish species are salmon and trout . It is regulated by several dams with fish ladders. Numerous anglers come every year, especially from Denmark , Sweden and Germany . Numerous whooper swans live on the Namsen, the majority of which have recently stayed there in winter.

Regulated lakes in the catchment area

Surname Storage
volume
in million m³		 Area
in km²		 min. Height
in moh		 Max. Height
in moh		 Regulation
height
in m
Namsvatnet 458 39.4 440 454 14th
Vectors 39 9.2 440 445.5 5.5
Limingen 260 93.5 309 417 8.7
Tunnsjøen 440 100.2 352 357 5
Tunnsjøflyan 13 7.1 345 348 3

Hydroelectric power plants in the catchment area

Surname completion
position		 Power
in MW		 Annual
output
in GWh		 Fall height
in m		 Number of
turbines		 Reservoir operator
Nedre Fiskumfoss power sales 1955 39 240 Nord-Trøndelag Elektrisitetsverk
Øvre Fiskumfoss power sales 1976 7.6 57 3 Nord-Trøndelag Elektrisitetsverk
Aunfoss power sale 1979 28 180 2 Nord-Trøndelag Elektrisitetsverk
Åsmulfoss power sales 1971 12 74 Nord-Trøndelag Elektrisitetsverk
Tunnsjødal Kraftverk 1962 176 820 Tunnsjøflyan Nord-Trøndelag Elektrisitetsverk
Røyrvikfoss power sales 1965 16 96 Vectors Nord-Trøndelag Elektrisitetsverk
Tunnsjø Kraftverk 1963 82 138 Limingen Nord-Trøndelag Elektrisitetsverk
Tunnsjøfoss power sales 27 Tunnsjøen Nord-Trøndelag Elektrisitetsverk
Linvasselv power sales 1962 68 200 108 Limingen Nord-Trøndelag Elektrisitetsverk,
E.ON Sverige AB

  • The Namsen, seen from Kvatningenfjell, with Namsos in the background

  • Namsen between Skage and Kvatningen

  • Evening mood on the Namsen at low tide

See also

swell