Nelaug 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 municipalities of Froland

Froland

Froland is a municipality in Aust-Agder county, Norway. It is part of the traditional region of Sørlandet. The administrative center is the village of Blakstad, which along with Osedalen form the main population center of the municipality....

 and Åmli

Åmli

Åmli is a municipality in the county of Aust-Agder, Norway. It is located in the traditional region of Sørlandet. The main population centre and administrative center is the village of Åmli which lies along the river Nidelva.-Name:...

 in Aust-Agder

Aust-Agder

is a county in Norway, bordering Telemark, Rogaland, and Vest-Agder. In 2002, there were 102,945 inhabitants, which is 2.2% of the total population in Norway. Its area is . The administrative center of the county is in Arendal....

 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 lake is formed by a dam

Dam

A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are...

 which regulates 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...

 power plant on the Nidelva

Nidelva (Aust-Agder)

Nidelva in Aust-Agder is the main river in the Arendal drainage basin. It is formed by the confluence of two rivers, Nisserelva and Fyreselv. The river flows into the Skagerak at Arendal. The total length of the system is , the watershed covers...

 river. The village of Nelaug

Nelaug

Nelaug is a village in the southern part of the municipality of Åmli in Aust-Agder county, Norway. The population was 161. The village lies east of the Nelaug lake, which is regulated by a hydroelectric power plant...

 is located near the dam. The lake is located about 11 kilometres (6.8 mi) south of the municipal center of Åmli and about 15 kilometres (9.3 mi) southeast of the village of Dølemo

Dølemo

Dølemo is a village in the municipality of Åmli in Aust-Agder county, Norway. The village has a population of about 200. It is home to the municipal kindergarten, an elementary school, a shop, and many thriving clubs and organizations...

.