Storakersvatnet is a lake in the municipality of Rana in Nordland county, Norway. The lake lies about 15 kilometres (9.3 mi) south of the town of Mo i Rana and less than 900 metres (3,000 ft) from the border with Sweden. The original lake was only 15.9 square kilometres (6.1 sq mi), but a dam was built at the northern end so that it can serve as a reservoir for the Rana power station.