Allumette Island is long and wide, making it the largest island within the Ottawa River along its entire course. At this point the Ottawa River has widened into a lake, called Allumette Lake, which is long and has a total surface area of. The municipality consists mostly of agricultural land. Its population centres are Chapeau, Desjardinsville, Demers Centre, and Saint-Joseph.
History
The KichesipiriniAlgonquins first occupied the site in order to maintain control of trade on the Ottawa River. For this reason, Samuel de Champlain named it Isle des Algoumequins during his trip of 1613. In 1650, this native population was almost entirely exterminated by the Iroquois. In his memoirs written during the second half of the 17th century, Nicolas Perrot made mention of the "One-Eyed Island otherwise called Allumette Island". The name "One-Eyed" was a reference to the disability of Tessouat, an Algonquin chief in the region. The name "Allumettes" was first given to the rapids south-east of the island. A map from 1680 refers to these as Sault des Allumettes. It was not until 1818 that Europeans began to settle on the island. They worked mostly as loggers or for the Hudson's Bay Company which had a fur trading post just upstream at Fort William. The preferred transport route was still the river, so most families build their homes south on the island where the church of Saint-Alphonse-de-l'Île-aux-Allumettes Parish was built in 1840. The Île-aux-Allumettes Township was formed in 1847, and its first mayor was Andrew Whelan. An intense fire destroyed almost all the buildings in 1853 and, thereafter, the population rather settled in the northern part, on the current site of Chapeau village. In 1874, the village of Chapeau separated from the township and became an incorporated municipality, with Patrick Cunningham as the first mayor. In 1910, the parish of Saint-Joseph-de-l'Île-aux-Allumettes was established on the eastern part of the island, leading to the formation of the Municipality of L'Isle-aux-Allumettes-Partie-Est in 1920. On December 30, 1998, the municipality of Chapeau Village and the township municipalities of L'Isle-aux-Allumettes and L'Isle-aux-Allumettes-Part-East were merged into the new Municipality of L'Isle-aux-Allumettes.
UFO Landing Incident
On May 11, 1969, near Chapeau, a farmer by the name of Leo-Paul Chaput was awakened at 2 am, and witnessed a brilliant white light emanating from a flat-bottomed domed craft, resembling a French WWI military helmet. The next morning, a wide circular imprint was found in the ground, with a ring of scorched grass wide, containing three indentations forming an equilateral triangle, with sides long, each dent wide and deep, suggesting a "landing tripod". A second smaller circle was also found, with a ring of scorched grass, but the triangle of indentations was smaller and not equilateral. A third scorched marking, although a semicircle, contained a pile of rocks. An explanation was offered that the circles were fairy rings, but this seems unlikely as they take years to achieve such a size and the witness insisted the markings were not there the day before.