science

Saguenay flood

Saguenay flood is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Saguenay flood rather than just read about it. In short: The Saguenay flood (French: Déluge du Saguenay) was a series of flash floods on July 19 and 20, 1996 that hit the Saguenay–Lac-Saint-Jean region of Quebec, Canada. It was the biggest overland flood in 20th-century Canadian history.

Key takeaways

Saguenay flood belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Saguenay flood to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Saguenay flood from memory before moving on to harder problems.

Reference excerpt

The Saguenay flood (French: Déluge du Saguenay) was a series of flash floods on July 19 and 20, 1996 that hit the Saguenay–Lac-Saint-Jean region of Quebec, Canada. It was the biggest overland flood in 20th-century Canadian history.

History Problems started after two weeks of constant rain, which severely engorged soils, rivers and reservoirs. The Saguenay region is a geological graben, which increased the effect of the sudden massive rains of July 19, 1996. In two days, rainfall accumulated that was "equivalent to the volume of water that tumbles over Niagara Falls in four weeks."

Over 8 feet (2.4 m) of water flooded parts of Chicoutimi and La Baie, completely levelling an entire neighbourhood. Estimates reach CA$1.5 billion in damages, a cost made greater by the disaster's occurrence at the height of the tourist season. Post-flood enquiries discovered that the network of dikes and dams protecting the city of Chicoutimi was poorly maintained. In the end, 488 homes were destroyed, 1,230 damaged, 16,000 people evacuated, and 10 people died. An additional 2 people died in the mudslides produced by the incredible rain.

Legacy A small white house (referred to in French as La petite maison blanche, "The little white house") stood nearly unharmed in Chicoutimi while torrents of water rushed in on every side, and it became the symbol of surviving the flood. It was owned by Jeanne d'Arc Lavoie-Genest. With its foundation still highly exposed after the flooding, it has been preserved in Saguenay (the city name has changed) as a historical park and museum commemorating the flood. An unexpected effect of the flood was to cover the heavily contaminated sediments at the bottom of the Saguenay and Ha! Ha! Rivers with 10 to 50 centimetres (3.9 to 19.7 in) of new, relatively clean sediments. Because of this, research has shown that the old sediments are no longer a threat to ecosystems and the river will not have to be dredged and treated to control contamination.

The Ha! Ha! Pyramid made of 3,000 yield signs was created in 1997 to memorialise the flood.

References

External links CBC Digital Archives – The Saguenay Flood "Bilan du Siècle", University of Sherbrooke (in French) Meteorological Service of Canada: Top Ten Weather Stories of 1996 Project Saguenay, The scientific team doing research on the ecological effects of the flood.

Illustrations

Saguenay flood: Flooding in Chicoutimi during the Saguenay Flood. — Flooding in Chicoutimi during the Saguenay Flood.

Worked examples

Example 1 — a first encounter with Saguenay flood

Start with the simplest possible case. Write down what Saguenay flood claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Saguenay flood before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Saguenay flood ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Saguenay flood

In research: Saguenay flood appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Saguenay flood in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Saguenay flood is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1990s floods in North America, 1996 disasters in Canada, 1996 floods, so understanding it makes those chapters shorter.
In everyday life: Look for Saguenay flood outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Saguenay flood in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Saguenay flood means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Saguenay flood out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Saguenay flood in simple terms?

Why does Saguenay flood matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Saguenay flood?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Saguenay flood.