Drevvatnet is a lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 that lies in the municipality of Vefsn

Vefsn

Vefsn is a municipality in Nordland county, Norway. It is part of the Helgeland traditional region. The administrative centre of the municipality is the town of Mosjøen....

 in Nordland

Nordland

is a county in Norway in the North Norway region, bordering Troms in the north, Nord-Trøndelag in the south, Norrbottens län in Sweden to the east, Västerbottens län to the southeast, and the Atlantic Ocean to the west. The county was formerly known as Nordlandene amt. The county administration is...

 county, 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...

. The village of Drevvassbygda

Drevvassbygda

Drevvassbygda is a village in Vefsn municipality, Norway. It is located by the Drevvatnet lake in the Elsfjord district, which used to be a separate municipality.The village has a train station on Nordlandsbanen, between Mosjøen and Bjerka....

 lies at the northeastern end of the lake, in the Drevjedalen valley. The Nordlandsbanen

Nordlandsbanen

The Nordland Line is a railway line between Trondheim and Bodø in Norway. Running for approximately 729 km, it is the Norwegian railway system's longest line, and the only one in Norway to cross the Arctic Circle. It is owned by the Norwegian National Rail Administration...

 railway line follows the southern coast of the lake.

Name

The first element is the name of the river Drevja and the last element is the finite form of vatn which means "lake".