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Lough Erne

Lough Erne 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 Lough Erne rather than just read about it. In short: Lough Erne ( LOKH URN, from Irish Loch Éirne) is two connected lakes in County Fermanagh, Northern Ireland. It is the second-largest lake system in Northern Ireland and Ulster, and the fourth largest in Ireland.

Lough Erne — main illustration
Lough Erne — illustration

Key takeaways

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

Reference excerpt

Lough Erne ( LOKH URN, from Irish Loch Éirne) is two connected lakes in County Fermanagh, Northern Ireland. It is the second-largest lake system in Northern Ireland and Ulster, and the fourth largest in Ireland. The lakes are widened sections of the River Erne, which flows north and then curves west into the Atlantic. The smaller southern lake is called the Upper Lough as it is higher up the river. The larger northern lake is called the Lower Lough or Broad Lough. The town of Enniskillen lies on the short stretch of river between the lakes. The lake has more than 150 islands, along with many coves and inlets. The River Erne is 80 miles (129 km) long and drains an area of about 1,680 square miles (4,350 km2).

Name, mythology and folklore Lough Erne (Irish: Loch Éirne) appears to be named after an ancient population group called the Érainn, or after a goddess from which the Érainn took their name. Since tribes were often named after a divine ancestor, T. F. O'Rahilly suggested that the Érainn took their name from a goddess named Érann and that Loch Éirne probably means 'lake of (the goddess) Érann'. O'Rahilly and other scholars have connected these names to Ériu (modern Éire), the goddess after which Ireland is named. He writes that the earlier forms of these goddess names were Everna/Iverna and Everiu/Iveriu and that both come from "the Indo-European root ei-, implying motion". In his view Érann and Ériu would thus appear to mean "she who travels regularly", explained as "the sun-goddess, for the sun was the great celestial Traveller". Alternatively, John T. Koch suggests that Ériu was a mother goddess whose name comes from an Indo-European word stem meaning "fat, rich, fertile". In Irish mythology and folklore, there are three tales about the lake's origins. One says that it is named after a mythical woman named Erne, Queen Méabh's lady-in-waiting at Cruachan. Erne and her maidens were frightened away from Cruachan when a fearsome giant emerged from the cave of Oweynagat. They fled northward and drowned in a river or lake, their bodies dissolving to become Lough Erne. Patricia Monaghan notes that "The drowning of a goddess in a river is common in Irish mythology and typically represents the dissolving of her divine power into the water, which then gives life to the land". Another tale says that it was formed when a magical spring-well overflowed, similar to the tale of Lough Neagh. The third says that, during a battle between the Érainn and the army of High King Fíachu Labrainne, it burst from the ground and drowned the Érainn. In Cath Maige Tuired ("the Battle of Moytura"), it is listed as one of the twelve chief loughs of Ireland. Historically, the lake was also called Loch Saimer (Samhaoir). In folklore Partholón killed his wife's favourite hound, Saimer, in a fit of jealous rage, and the lake was named after it. Lough Erne is the setting of a folk tale known as "The Story of Conn-eda" or "The Golden Apples of Lough Erne", which appears in Fairy and Folk Tales of the Irish Peasantry (1888). In the tale, Conn-eda goes on a quest to procure three golden apples, a black steed and a supernatural hound from a city underneath Lough Erne. The city is ruled by a king of the Fir Bolg.

History The Menapii are the only known Celtic tribe specifically named on Ptolemy’s AD 150 map of Ireland, where they located their first colony, Menapia, on the Leinster coast circa 216 BC. They later settled around Lough Erne, becoming known as the Fir Manach, and giving their name to Fermanagh and Monaghan. Mongán mac Fiachnai, a 7th-century King of Ulster, is the protagonist of several legends linking him with Manannán mac Lir. They spread across Ireland, evolving into historic Irish (also Scottish and Manx) clans. The Annals of Ulster were written in the late 15th century on Belle Isle, an island in Upper Lough Erne. During the Second World War, RAF Castle Archdale was based on Lough Erne, providing an essential airbase for the Battle of the Atlantic and the battle against U-boats. A secret agreement with the Irish Government permitted flying boats based there to fly West straight across neutral Ireland to the Atlantic, avoiding the two-hour detour that would have been necessary for aeroplanes based in Northern Ireland. This flight path became known as 'The Donegal Corridor'. An example of the many ways Ireland assisted the allies while remaining neutral. In November 2012, it was announced that the Lough Erne Resort, a hotel on the southern shore of the Lower Lough, would host the 39th G8 summit.

Geography

Islands The lakes contain many small islands and peninsulas, which are also called "islands" because of the highly convoluted shoreline and because many of them were islands prior to two extensive drainage schemes in the 1880s and the 1950s which dropped the water level by about 5 feet (1.5 metres). The Parliamentary Gazetteer of 1846 stated, "The islands are popularly fabled to be as numerous as the days of the year; but they have been more soberly estimated at 90 in the Upper Lake and 109 in the Lower". The largest islands are Inishmore at the northern end of Upper Lough Erne (not to be confused with "Inish More or Davy's Island" in Lower Lough Erne) and Galloon Island at the lower end of Upper Lough Erne. Whether these are entirely bounded by the lake, or partly bounded by the River Erne, is a matter of opinion. The next largest is Boa Island, within Lower Lough Erne. All three of these comprise multiple townlands. Many of the next largest islands constitute a single townland. Islands in the lower lake include Boa Island, Cleenishmeen Island, Crevinishaughy Island, Cruninish Island, Devenish Island, Ely Island, Goat Island, Horse Island, Inish Doney, Inish Fovar, Inish Lougher, Inish More or Davy's Island, Inis Rath, Inishmacsaint, Inishmakill, Lustybeg Island, Lustymore Island and White Island. Those in the upper lake include Bleanish Island, Crehan Island, Dernish Island, Inishcorkish, Inishcrevan, Inishfendra, Inishleague, Inishlught, Inishrath, Inishturk, Killygowan Island, Naan Island and Trannish. Several of the islands are privately owned, and occasionally come on to the open market. In 2007 Inishturk went on the market at the price of £695,000. In 2012 Inisliroo went on the market at the price of £600,000. The lake islands are the main Irish stronghold of the scarce garden warbler.

… excerpt ends here. Continue reading the full article.

Illustrations

Lough Erne illustration
Lough Erne illustration
Lough Erne illustration
Lough Erne illustration
Lough Erne illustration

Worked examples

Example 1 — a first encounter with Lough Erne

Start with the simplest possible case. Write down what Lough Erne 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 Lough Erne 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 Lough Erne 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 Lough Erne

In research
Lough Erne 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 Lough Erne 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
Lough Erne is common in secondary-school and first-year university syllabi. It links to neighbouring topics Lake groups, Lakes of County Fermanagh, Places in Celtic mythology, so understanding it makes those chapters shorter.
In everyday life
Look for Lough Erne 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 Lough Erne in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Lough Erne 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 Lough Erne out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lough Erne in simple terms?

Lough Erne ( LOKH URN, from Irish Loch Éirne) is two connected lakes in County Fermanagh, Northern Ireland. It is the second-largest lake system in Northern Ireland and Ulster, and the fourth largest in Ireland.

Why does Lough Erne 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 Lough Erne?

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 Lough Erne.

Tags

  • Lake groups
  • Lakes of County Fermanagh
  • Places in Celtic mythology
  • Protected areas of County Fermanagh
  • Ramsar sites in Northern Ireland
  • Special Areas of Conservation in Northern Ireland

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