Everything about Saint-jean-vianney Quebec totally explained
Saint-Jean-Vianney was a
village in the
Saguenay-Lac-Saint-Jean region of
Quebec, which was partially destroyed in a
landslide on
May 4,
1971.
History
Saint-Jean-Vianney was originally created as a
parish municipality in 1935, and became a village on
December 29,
1951. By 1971, the village had a population of 1,266.
Landslide
Located near the shore of the
Saguenay River, Saint-Jean-Vianney was — unbeknownst to residents at the time — built atop a bed of unstable
Leda clay, a type of
subsoil which can
liquify under stress.
Following unusually heavy rains in April of 1971, the clay soil bed at Saint-Jean-Vianney became saturated with water that had failed to
run off, causing pockets of clay to gradually dissolve. Over the few weeks leading up to the landslide, cracks were reported in some of the town's streets and driveways, some house foundations dropped roughly six to eight inches into the soil, and some unusual noises — including underground thumps and an untraceable sound of running water — were reported.
At 10:45 p.m. on the evening of May 4, the earth at Saint-Jean-Vianney suddenly dropped approximately 100 feet, forming a canyon through which a river of liquefied clay flowed toward the
Rivière du Petit-Bras below, swallowing houses in its path. Just before midnight, the clay finally stopped flowing and began to resolidify. By the time the landslide had ended, 41 homes had been destroyed and 31 people had been killed.
The landslide created a crater of approximately 324,000
square metres in area, varying from 15 to 30 metres in depth.
Aftermath
The Saint-Jean-Vianney site was subsequently declared unsafe for habitation, and over the next six months the survivors were resettled at
Arvida. Through various municipal amalgamations, both the landslide site and Arvida are now within the municipal boundaries of
Saguenay.
Subsequent research into the slide revealed that Saint-Jean-Vianney was in fact built directly atop the site of another landslide approximately 500 years earlier, long before any settlement had ever taken place in the area.
The site of Saint-Jean-Vianney remains uninhabited today, although a small park near
Shipshaw and a museum exhibit at Saguenay's Place du Presbytère commemorate the event. Place du Presbytère also includes an exhibit dedicated to the
Saguenay Flood of 1996.
Further Information
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