Lough Sheelin (), in standard

Irish Irish may refer to: Common meanings * Someone or something of, from, or related to: ** Ireland, an island situated off the north-western coast of continental Europe ***Éire, Irish language name for the isle ** Northern Ireland, a constituent unit ...

''Loch Síleann'', is a limestone freshwater

lough ''Loch'' () is the Scottish Gaelic, Scots and Irish word for a lake or sea inlet. It is cognate with the Manx lough, Cornish logh, and one of the Welsh words for lake, llwch. In English English and Hiberno-English, the anglicised sp ...

(

lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...

) in central

Ireland Ireland ( ; ga, Éire ; Ulster-Scots: ) is an island in the North Atlantic Ocean, in north-western Europe. It is separated from Great Britain to its east by the North Channel, the Irish Sea, and St George's Channel. Ireland is the s ...

. The lake is a part of the River Inny course, and ultimately of the Shannon system.

Geography and geology

Lough Sheelin lies at a meeting point of Counties

Westmeath "Noble above nobility" , image_map = Island of Ireland location map Westmeath.svg , subdivision_type = Country , subdivision_name = Ireland , subdivision_type1 = Province , subdivision_name1 = , subdivis ...

, Meath and

Cavan Cavan ( ; ) is the county town of County Cavan in Ireland. The town lies in Ulster, near the border with County Fermanagh in Northern Ireland. The town is bypassed by the main N3 road that links Dublin (to the south) with Enniskillen, Bal ...

, near the villages of

Finnea Finnea () is a small village in County Westmeath on the border with County Cavan. It straddles the R394 road, in the northern portion of Ireland. Transport Bus Éireann route 447 provides a link to Castlepollard, Crookedwood and Mullingar on Th ...

(often spelled Finea) and Mountnugent, and the town of Granard, in a fourth county, (

Longford Longford () is the county town of County Longford in Ireland. It has a population of 10,008 according to the 2016 census. It is the biggest town in the county and about one third of the county's population lives there. Longford lies at the mee ...

). More than half its area is in County Cavan, and it takes in parts of multiple civil parishes and baronies. The lake lies on the early course of the River Inny, a major tributary of the Shannon, a little upstream of Lough Kinale. The inflow is sometimes known as the Upper Inny or the Ross River, and the outflow as the Lower Inny. It is also fed by smaller watercourses, including the Mountnugent (Mount Nugent) River and the Bellsgrove (or Belsgrove, also known as Ballyheelan) and Crover Streams, as well as the Mauraghboy, Carrick, Rusheen, Moneybeg and Schoolhouse Streams. The lake is long, and has a surface area of between . It is underlain by

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms w ...

, as is the Upper Inny, while some tributaries are underlain by

quartzite Quartzite is a hard, non- foliated metamorphic rock which was originally pure quartz sandstone.Essentials of Geology, 3rd Edition, Stephen Marshak, p 182 Sandstone is converted into quartzite through heating and pressure usually related to tec ...

Fauna and flora

The lake is naturally populated by

brown trout The brown trout (''Salmo trutta'') is a European species of salmonid fish that has been widely introduced into suitable environments globally. It includes purely freshwater populations, referred to as the riverine ecotype, ''Salmo trutta'' morp ...

whose native stocks became depleted in the latter half of the 20th century; at peak, there were 100,000 to 120,000 brown trout in the lake. Nutrient loading, notably of phosphorus, originating from intensive agricultural developments upstream caused a progressive enrichment of the Lough's waters which led to a substantial decrease in the number of trout from the 1970s to the early 2000s.

Zebra mussels 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 ...

, an invasive species, were first seen in the lake in 2000 and there followed a huge increase in their population. A state agency,

Inland Fisheries Ireland Inland Fisheries Ireland (IFI; ga, Iascach Intíre Éireann) is a state agency responsible for fisheries management of freshwater fish and coastal fish with 12 nautical miles of the shore. A separate agency, Bord Iascaigh Mhara, is responsible for ...

, monitors the water quality, including the level of phosphorus, and in conjunction with local organisations, primarily the Lough Sheelin Trout Preservation Association, it and a predecessor body, the Inland Fisheries Trust, has stocked the lake with farm-reared trout. There is also an abundance of common roach in the lake, and other species present include 3- and 9-spined stickleback, pike, perch, and eels.

Status

The lake is a Special Protection Area (SPA) under the EU Birds Directive (EC/79/409), as an important site for wintering waterfowl, supporting nationally important populations of

great crested grebe The great crested grebe (''Podiceps cristatus'') is a member of the grebe family of water birds noted for its elaborate mating display. Taxonomy The great crested grebe was formally described by the Swedish naturalist Carl Linnaeus in 1758 in t ...

pochard Pochard is a common name used for several species of diving ducks: *Four species in the genus ''Aythya'': ** Common pochard, ''Aythya ferina'' ** Baer's pochard, ''Aythya baeri'' ** Ferruginous pochard, ''Aythya nyroca'' ** Madagascar pochard, '' ...

, tufted duck and

goldeneye ''GoldenEye'' is a 1995 spy film, the seventeenth in the ''James Bond'' series produced by Eon Productions, and the first to star Pierce Brosnan as the fictional MI6 agent James Bond. Directed by Martin Campbell, it was the first in the se ...

Popular culture

Lough Sheelin is the setting of the song "Lough Sheelin Eviction", made popular by the

Wolfe Tones The Wolfe Tones are an Irish rebel music band that incorporate Irish traditional music in their songs. Formed in 1963, they take their name from Theobald Wolfe Tone, one of the leaders of the Irish Rebellion of 1798, with the double meaning ...

. The song is purportedly based on an account of an eviction of more than 700 tenants, witnessed by Dr. Thomas Nulty, Roman Catholic Bishop of Meath, in 1848, in his first year as a priest in the diocese.

References

External links

Ordnance Survey of Ireland MapShannon Regional Fisheries Board Lough Sheelin Guide
{{DEFAULTSORT:Sheelin, Lough Sheelin Sheelin Sheelin Important Bird Areas of the Republic of Ireland