They had decided that Fort de La Présentation was insufficient to defend their St. Lawrence River colonies against the British.

During the construction of the Saint Lawrence Seaway, the remains of the fort were destroyed and submerged beneath the waters of the river.

The French began settling the St. Lawrence River and establishing trade routes into the interior of the continent.

[5] The site was chosen due to the island's steep cliffs and proximity to a series of rapids that would force attacking naval vessels to sail upstream one at a time.

[6] This did not have time to come to fruition and Fort Lévis was a large earthen and wood redoubt, which was one-log thick.

[3] The fort never received its 200 guns and by the time of the Battle of the Thousand Islands, was armed with several iron cannon with trunions removed and set in logs.

[3] In 1760 during the Seven Years' War, Major-General Amherst began a march on Montreal intending to capture the city.