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Lake Dunstan

Lake Dunstan is a engineering 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 Lake Dunstan rather than just read about it. In short: Lake Dunstan is a man-made lake and reservoir in the Otago Region of the South Island of New Zealand. The lake was formed on the Clutha River as a result of the construction of the Clyde Dam, filling in four controlled stages beginning in April 1992 and completed the next year.

Lake Dunstan — main illustration
Lake Dunstan — illustration

Key takeaways

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

Reference excerpt

Lake Dunstan is a man-made lake and reservoir in the Otago Region of the South Island of New Zealand. The lake was formed on the Clutha River as a result of the construction of the Clyde Dam, filling in four controlled stages beginning in April 1992 and completed the next year. Parts of the town of Cromwell were relocated to a new area above the new lake. Between the town of Cromwell and the Clyde Dam the lake passes through what is called the Cromwell Gorge. Lake Dunstan provides irrigation for nearby stone fruit orchards and vineyards, and is a major recreational asset, with facilities for boating, waterskiing, fishing, parapenting, and rowing. The dam and lake became well known in New Zealand due to media coverage of the geological problems during its construction. While the dam was being built at least one landslide occurred at Cairnmuir, a series of bluffs overlooking the gorge where the dam was built. All parties involved denied responsibility for not finding the problem. Because of the expense of stabilising the gorge walls and the changing economic climate, this was also the last of the Third National Government's Think Big projects.

Protests

There was vocal protest against the project from the local community, with calls for the planning and project to cease. Environmentalists, scientists, lawyers, recreational river users, families that had lived here for generations, and others that had recently moved to the area protested, none seemingly more poignantly than the artists. There was a perception that the power from the dam was intended for an aluminium smelter near Dunedin. Prominent figures including Ralph Hotere, Andrew Drummond, Chris Cree Brown and Chris Booth did significant and powerful work that related to the smelter issue, gaining publicity and acclaim with exhibitions and appropriate comment in various art magazines. Other artists worked on the dam issue: Robin Morrison created a sensitive series of portraits on the residents affected by the flooding; Marilynn Webb a compelling series of prints called "Good Bye- Clutha Blue" in 1983; Bruce Foster a series of Ciba-chrome prints investigating the pre-construction lines painted on the land, and Lloyd Godman a significant series of large photo-mural prints, toned with gold from the Clutha River, entitled “The Last River's Song”. During the filling of the dam to form Lake Dunstan in 1992–93, Godman also completed a series of performance works entitled "Lake Fill", which involved using an underwater camera to take a series of photographs of a selected vista up the river showing its gradual obliteration due to the rising lake level.

References

Illustrations

Lake Dunstan illustration
Lake Dunstan illustration
Lake Dunstan: Deadmans Point bridge, crossing a narrow section of Lake Dunstan near Cromwell.
Deadmans Point bridge, crossing a narrow section of Lake Dunstan near Cromwell.

Worked examples

Example 1 — a first encounter with Lake Dunstan

Start with the simplest possible case. Write down what Lake Dunstan claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, 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 Lake Dunstan 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 Lake Dunstan 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 Lake Dunstan

In research
Lake Dunstan appears in engineering 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 Lake Dunstan 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
Lake Dunstan is common in secondary-school and first-year university syllabi. It links to neighbouring topics Buildings and structures completed in 1993, Clutha River, Cromwell, New Zealand, so understanding it makes those chapters shorter.
In everyday life
Look for Lake Dunstan 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 Lake Dunstan in 20 minutes

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

Frequently asked questions

What is Lake Dunstan in simple terms?

Lake Dunstan is a man-made lake and reservoir in the Otago Region of the South Island of New Zealand. The lake was formed on the Clutha River as a result of the construction of the Clyde Dam, filling in four controlled stages beginning in April 1992 and completed the next year.

Why does Lake Dunstan matter?

Because it connects several engineering 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 Lake Dunstan?

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 Lake Dunstan.

Tags

  • Buildings and structures completed in 1993
  • Clutha River
  • Cromwell, New Zealand
  • Lakes of Otago
  • Reservoirs in New Zealand

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