Bogstad lake is located 145 meters above sea level between Bærum and Oslo in Norway. The water flows mainly from the Sørkedal river, and flows via the Lysaker river into the Oslo Fjord. The water is about 2 km long, 10 meters deep and is great to swim in during summer when the quality of the water is ok. Click here to see if the quality is good. The water was in the 18th century called Fådvannet, and was smaller than it is today. Wedel Jarlsberg built a coffin dam in 1869 which raised the water level another 2 meters, and called the new lake Bogstadvannet. In 1913, Carl Otto Løvenskiold built a new dam.