Fretheimsdalsvatnet 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,...

 in the municipality of Aurland

Aurland

Aurland is a municipality in the county of Sogn og Fjordane, Norway. It is located in the traditional district of Sogn. The administrative center is the village of Aurlandsvangen. Other villages include Bakka, Flåm, Undredal, and Gudvangen....

 in Sogn og Fjordane

Sogn og Fjordane

is a county in Norway, bordering Møre og Romsdal, Oppland, Buskerud, and Hordaland. The county administration is in the town of Hermansverk in Leikanger municipality while the largest town is Førde....

 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 3.88 square kilometres (1.5 sq mi) lake is located at an elevation of 929 metres (3,047.9 ft) above sea level. Fretheimsdalsvatnet is located at the end of the Låvisdalen valley, about 11 kilometres (6.8 mi) southeast of Aurlandsvangen

Aurlandsvangen

Aurlandsvangen is the administrative center of the municipality of Aurland in Sogn og Fjordane county, Norway. The village is located on the east side of the Aurlandsfjord where the Aurlandselvi river flows into the fjord. The village of Undredal and the famous Nærøyfjord are located just a few...

, about 7 kilometres (4.3 mi) southeast of Flåm

Flåm

Flåm is a village at the inner end of the Aurlandsfjord, an arm of the Sognefjord. The village is located in the municipality of Aurland in Sogn og Fjordane county, Norway...

, and about 6 kilometres (3.7 mi) northeast of Myrdal Station

Myrdal station

Myrdal Station is a mountain railway station and junction, located on the Bergen Line regional mainline in Aurland, Sogn og Fjordane, Norway. The railway station is also the upper terminal of the Flåm Line local railway, which ascends from the valley floor of the Sognefjord to the mountain-top...

. There is a hydroelectric

Hydroelectricity

Hydroelectricity is the term referring to electricity generated by hydropower; the production of electrical power through the use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy...

dam at the north end of the lake.