The entire river has a total drop in elevation of 727 metres (2,385 ft) from Møsvatn to Tinnsjå, notably including the Rjukan Falls, a large waterfall that has also been a major tourist attraction. This area has been developed in five power stations with a total installation of 506 megawatts (679,000 hp) and a total average annual production of 2,237 gigawatt-hours (8,050 TJ). The largest power stations are Vemork and Såheim.[1]