Saint John's Lough
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St. John's Lough (), also known as St. John's Lake, is an irregularly shaped
freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include ...
lake located in south
County Leitrim County Leitrim ( ; gle, Contae Liatroma) is a county in Ireland. It is in the province of Connacht and is part of the Northern and Western Region. It is named after the village of Leitrim. Leitrim County Council is the local authority for the ...
, in northwest of Ireland. The lake forms part of the wider
Shannon–Erne Waterway The Shannon–Erne Waterway ( ga, Uiscebhealach na Sionainne is na hÉirne) is a canal linking the River Shannon in the Republic of Ireland with the River Erne in Northern Ireland. Managed by Waterways Ireland, the canal is in length, has sixt ...
tourist attraction. The ecology of John's Lough, and the Shannon-system, is threatened by pollution and
invasive species An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species ad ...
such as curly waterweed,
zebra mussel The zebra mussel (''Dreissena polymorpha'') is a small freshwater mussel. The species originates from the lakes of southern Russia and Ukraine, but has been accidentally introduced to numerous other areas and has become an invasive species in ma ...
, and
freshwater clam Freshwater bivalves are one kind of freshwater mollusc, along with freshwater snails. They are bivalves that live in fresh water as opposed to salt water, which is the main habitat type for bivalves. The majority of species of bivalve molluscs l ...
.


Etymology

Named after ga, Eóin Baiste, meaning "
John the Baptist John the Baptist or , , or , ;Wetterau, Bruce. ''World history''. New York: Henry Holt and Company. 1994. syc, ܝܘܿܚܲܢܵܢ ܡܲܥܡܕ݂ܵܢܵܐ, Yoḥanān Maʿmḏānā; he, יוחנן המטביל, Yohanān HaMatbil; la, Ioannes Bapti ...
", the lake is therefore named "the lake of John".


Geography

St. John's Lough is a shallow freshwater lake west of
Ballinamore Ballinamore (, meaning "mouth of the big ford") is a small town in County Leitrim, Ireland. Etymology , corrupted ''Bellanamore'', means "town at the mouth of the big ford", so named because it was a main crossing (ford) of the Yellow River. T ...
, covering a surface area somewhere between and . Saint John's Lough extends from in the north-east, before dividing into three broad reaches separated by narrow passes, or straits. The "" connects the Ballinamore canal and northern lake portion to the central John's lough, and the "" connects the central lough to the southern lough. The catchment area comprises Forestry (2%), pasture (55%), and other agriculture (43%), according to
CORINE Coordination of Information on the Environment (CORINE) is a European programme initiated in 1985 by the European Commission, aimed at gathering information relating to the environment on certain priority topics for the European Union (air, water, ...
data. The R208 regional road follows the lakes northern boundary, crossing the Ballinamore canal at .


Ecology

Fish present in John's Lough include "
roach Roach may refer to: Animals * Cockroach, various insect species of the order Blattodea * Common roach (''Rutilus rutilus''), a fresh and brackish water fish of the family Cyprinidae ** ''Rutilus'' or roaches, a genus of fishes * California roach ...
-
bream Bream ( ) are species of freshwater and marine fish belonging to a variety of genera including ''Abramis'' (e.g., ''A. brama'', the common bream), ''Acanthopagrus'', '' Argyrops'', ''Blicca'', '' Brama'', ''Chilotilapia'', '' Etelis'', ''Lepo ...
hybrids",
Roach Roach may refer to: Animals * Cockroach, various insect species of the order Blattodea * Common roach (''Rutilus rutilus''), a fresh and brackish water fish of the family Cyprinidae ** ''Rutilus'' or roaches, a genus of fishes * California roach ...
,
Perch Perch is a common name for fish of the genus ''Perca'', freshwater gamefish belonging to the family Percidae. The perch, of which three species occur in different geographical areas, lend their name to a large order of vertebrates: the Percif ...
, Bream (1-2lbs), and
Pike Pike, Pikes or The Pike may refer to: Fish * Blue pike or blue walleye, an extinct color morph of the yellow walleye ''Sander vitreus'' * Ctenoluciidae, the "pike characins", some species of which are commonly known as pikes * ''Esox'', genus of ...
. The pike population is the "native Irish strain" ( ga, liús meaning 'Irish
Pike Pike, Pikes or The Pike may refer to: Fish * Blue pike or blue walleye, an extinct color morph of the yellow walleye ''Sander vitreus'' * Ctenoluciidae, the "pike characins", some species of which are commonly known as pikes * ''Esox'', genus of ...
') not the other European
Pike Pike, Pikes or The Pike may refer to: Fish * Blue pike or blue walleye, an extinct color morph of the yellow walleye ''Sander vitreus'' * Ctenoluciidae, the "pike characins", some species of which are commonly known as pikes * ''Esox'', genus of ...
strain ( ga, gailliasc meaning 'strange or foreign fish'). The water quality was reported to be satisfactory with a mesotrophic rating. Repeated instances of significant illegal dumping and littering has been reported in recent years.


Ancient lake dwellers

Four ancient
crannog A crannog (; ga, crannóg ; gd, crannag ) is typically a partially or entirely artificial island, usually built in lakes and estuarine waters of Scotland, Wales, and Ireland. Unlike the prehistoric pile dwellings around the Alps, which were bu ...
s were reported at St. John's Lough. The
crannog A crannog (; ga, crannóg ; gd, crannag ) is typically a partially or entirely artificial island, usually built in lakes and estuarine waters of Scotland, Wales, and Ireland. Unlike the prehistoric pile dwellings around the Alps, which were bu ...
s were probably occupied during at least the 13th or the early 14th century, and lands surrounding John's Lough were covered by woodland during the
Middle Ages In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire a ...
.


Heritage


Museum artefacts

The following archaeological artefacts were recovered at Saint John's Lough in the 19th century, , and now preserved at the
Royal Irish Academy The Royal Irish Academy (RIA; ga, Acadamh Ríoga na hÉireann), based in Dublin, is an academic body that promotes study in the sciences, humanities and social sciences. It is Ireland's premier List of Irish learned societies, learned socie ...
museum, or at the
National Museum of Ireland The National Museum of Ireland ( ga, Ard-Mhúsaem na hÉireann) is Ireland's leading museum institution, with a strong emphasis on national and some international archaeology, Irish history, Irish art, culture, and natural history. It has thre ...
- * Three silver coins of the reigns of
Edward I Edward I (17/18 June 1239 – 7 July 1307), also known as Edward Longshanks and the Hammer of the Scots, was King of England and Lord of Ireland from 1272 to 1307. Concurrently, he ruled the duchies of Aquitaine and Gascony as a vassal o ...
or
Edward II Edward II (25 April 1284 – 21 September 1327), also called Edward of Caernarfon, was King of England and Lord of Ireland from 1307 until he was deposed in January 1327. The fourth son of Edward I, Edward became the heir apparent to t ...
, and
Edward III Edward III (13 November 1312 – 21 June 1377), also known as Edward of Windsor before his accession, was King of England and Lord of Ireland from January 1327 until his death in 1377. He is noted for his military success and for restoring r ...
found on a
Crannog A crannog (; ga, crannóg ; gd, crannag ) is typically a partially or entirely artificial island, usually built in lakes and estuarine waters of Scotland, Wales, and Ireland. Unlike the prehistoric pile dwellings around the Alps, which were bu ...
. * Bronze pin, and Short bronze sword, found at near John's Lough.


Ancient church

According to the
Annals of the Four Masters The ''Annals of the Kingdom of Ireland'' ( ga, Annála Ríoghachta Éireann) or the ''Annals of the Four Masters'' (''Annála na gCeithre Máistrí'') are chronicles of medieval Irish history. The entries span from the Deluge, dated as 2,24 ...
an ancient church standing on the northern shore of Saint John's Lough (nearby where the Yellow River An Gheirgthigh"enters the Lough at ) was destroyed in 1244AD. * "".


Human settlements

The primary
human settlement In geography, statistics and archaeology, a settlement, locality or populated place is a community in which people live. The complexity of a settlement can range from a minuscule number of dwellings grouped together to the largest of ci ...
s around St John's lough is Fenagh village and
Ballinamore Ballinamore (, meaning "mouth of the big ford") is a small town in County Leitrim, Ireland. Etymology , corrupted ''Bellanamore'', means "town at the mouth of the big ford", so named because it was a main crossing (ford) of the Yellow River. T ...
town.


See also

*
List of loughs in Ireland This is an alphabetical list of loughs (lakes) on the island of Ireland. It also shows a table of the largest loughs. The word ''lough'' is pronounced like ''loch'' () and comes from the Irish ''loch'', meaning ''lake''. According to the Environm ...


References and notes


Notes


Citations


Primary sources

* *


Secondary sources

* * * * * * * * * *


External links

* * {{refend Lakes of County Leitrim