Built in 1964 as a replacement for the Prince Shoal Lightship station (established in 1902), the lighthouse warns
passing vessels of one of the most dangerous shoals in the St. Lawrence River, off mouth of Saguenay River.

The tower is 83-feet high and produces a focal plane of 81 feet. The light produces a white flash every
2.5 seconds, with a range 18 nautical miles. The tapered base helps it resist the 20-foot tides in the area.

The light received a CAD 1,4000,000 rebuild in 2002.