![]() ![]() The behavior of the current may differ from normal due to strong winds or when more fresh water than usual is entering into the fjord from the surrounding mountains. The speed of this current also has a broad maximum being above six knots from two hours and forty minutes after Bodø high tide until five and a half hours before the next Bodø high tide. The greatest northbound current occurs about four and a half hours after Bodø high tide, when the outflowing current reaches over 8 knots (15 km/h). The speed of the current has a broad maximum being greater than six knots from three hours before Bodø high tide until half an hour after Bodø high tide. The greatest southbound current occurs about one and a quarter hours before Bodø high tide, when the inflowing current reaches about seven knots. The Pilot’s description of the normal current is based on the time of the high tide at Bodø. The above account of the Saltstraumen is rather different than what The Norwegian Pilot reports. Saltstraumen and the Saltstraumen Bridge with the Børvasstindene mountains in the background When the current turns, there is a period when the strait is navigable. The height difference between the sea level and the fjord inside can be up to 1 metre (3 ft 3 in). The current is created when the tide tries to fill Skjerstad Fjord. ![]() Before that, the area was different due to post-glacial rebound. Saltstraumen has existed for about two to three thousand years. At this point, one source claims that the tidal current can reach 40 kilometres per hour (25 mph). Vortices known as whirlpools or maelstroms up to 10 metres (33 ft) in diameter and 5 metres (16 ft) in depth are formed when the current is at its strongest. Up to 400 million cubic metres (110 billion US gallons) of seawater forces its way through a 3-kilometre (1.9 mi) long and 150-metre (490 ft) wide strait every six hours. ![]() Saltstraumen has one of the strongest tidal currents in the world. ![]()
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