This is a list of inland islands of Ireland, within lakes and rivers of Ireland.
The River Shannon is the major river on the island of Ireland, and at 360 km in length, is the longest river in the British Isles. It drains the Shannon River Basin, which has an area of 16,900 km2 (6,525 sq mi), – approximately one fifth of the area of Ireland.
Lough Neagh is a freshwater lake in Northern Ireland and is the largest lake on the island of Ireland and in the United Kingdom. It has a surface area of 151 square miles and is about 19 miles (31 km) long and 9 miles (14 km) wide. According to Northern Ireland Water, it supplies 40.7% of Northern Ireland's drinking water. Its main inflows are the Upper River Bann and Blackwater, and its main outflow is the Lower Bann. There are several small islands, including Ram's Island, Coney Island and Derrywarragh Island. The lake bed is owned by the 12th Earl of Shaftesbury and the lake is managed by Lough Neagh Partnership. Its name comes from Irish Loch nEachach, meaning "Eachaidh's lake".
Lough Erne is the name of two connected lakes in County Fermanagh, Northern Ireland. It is the second-biggest lake system in Northern Ireland and Ulster, and the fourth biggest 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 bigger 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).
A lake-burst is a phenomenon referred to in Irish mythology, in which a previously non-existent lake comes into being, often when a grave is being dug. Part of the lake-burst stories may originate in sudden hydrographic changes around limestone-based inland plains or turloughs. Other so-called lake-bursts refer to marine estuaries, bays and inlets, such as Galway Bay, Strangford Lough, Dundrum Bay, Belfast Lough, Waterford Harbour and the mouth of the River Erne. Some of these coastal districts were renowned for the drowned prehistoric forests, which gave rise to several flood-myths.
The River Erne in the northwest of the island of Ireland, is the second-longest river in Ulster, flowing through Northern Ireland and the Republic of Ireland, and forming part of their border.
The pollan or Irish pollan is a freshwater whitefish known only from five Irish lakes, Lough Neagh, Lower Lough Erne, Lough Ree, Lough Derg and Lough Allen. The pollan faces competition from introduced species such as pike, roach and zebra mussel, and the populations rely on restocking for survival.
Kesh is a village in County Fermanagh, Northern Ireland. It is on the Kesh River about 1 mile (1.6 km) from Lower Lough Erne. The 2011 Census recorded a population of 1,039 people. It is within Fermanagh and Omagh district.
Lough Gowna is a fresh water lake which is the uppermost lake on the River Erne. It is located on the border between County Longford and County Cavan, with the largest part of the lake being in County Longford.
The Ulster Canal is a canal running through part of County Armagh, County Tyrone and County Fermanagh in Northern Ireland and County Monaghan in the Republic of Ireland. The Ulster Canal was built between 1825 and 1842 and was 74 km (46 mi) long with 26 locks. It ran from Charlemont on the River Blackwater to near Wattlebridge on the Finn River, south-east of Upper Lough Erne. It was an ill-considered venture, with the locks built narrower than the other Irish waterways, preventing through trade, and an inadequate water supply. It was an abject failure commercially, and contributed to the collapse of the Lagan Navigation Company, who took it over from the government but were then refused permission to abandon it when they could not afford the maintenance costs. It finally closed in 1931. Waterways Ireland started work on rebuilding the canal at its southern end in 2015.
Lough Oughter is a lake, or complex of lakes, in County Cavan covering more than 8,900 hectares. The complex of lakes lies on the River Erne, and forms the southern part of the Lough Erne complex. The lakes are bounded roughly by Belturbet in the north, Cavan town to the east, Crossdoney to the south and Killeshandra to the west.
The Shannon–Erne Waterway 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 63 km (39 mi) in length, has sixteen locks and runs from Leitrim village in County Leitrim to Upper Lough Erne in County Fermanagh.
Coney Island is an island in Lough Neagh, Northern Ireland. It is about 1 km offshore from Maghery in County Armagh, is thickly wooded and of nearly 9 acres (36,000 m2) in area. It lies between the mouths of the River Blackwater and the River Bann in the south-west corner of Lough Neagh. Boat trips to the island are available at weekends from Maghery Country Park or Kinnego Marina. The island is owned by the National Trust and managed on their behalf by Armagh City, Banbridge and Craigavon Borough Council. Coney Island Flat is a rocky outcrop adjacent to the island. Although Samuel Lewis called Coney Island the only island in County Armagh, Armagh's section of Lough Neagh also includes Croaghan Island, as well as the marginal cases of Padian and Derrywarragh Island.
Ninnidh was a 6th-century Irish Christian saint. St. Ninnidh is regarded as one of the Twelve Apostles of Ireland. He is associated with the shores of Lough Erne and particularly the island of Inishmacsaint and the parish of Knockninny, County Fermanagh, Northern Ireland. His feast day is 18 January.
Garadice Lough (Irish: Loch Guth Ard Deas, also known as Garadice Lake or Lough Garadice, is a freshwater lake in County Leitrim, Ireland. It is located in the south of the county and now forms part of the Shannon–Erne Waterway.
Lough Scur is a freshwater lake in south County Leitrim, northwest Ireland. It is part of the Shannon–Erne Waterway. There have been Human settlements here since the New Stone Age. Modern features include quays and moorings. Protected features are Castle John, three Crannogs, and the causeway into Rusheen Island, though "Jail Island" is not protected. The ecology of Lough Scur, and indeed all county Leitrim lakes, is threatened by pollution and invasive species such as curly waterweed, zebra mussel, and freshwater clam.
St. John's Lough, also known as St. John's Lake, is an irregularly shaped freshwater lake located in south County Leitrim, in northwest of Ireland. The lake forms part of the wider Shannon–Erne Waterway tourist attraction. The ecology of John's Lough, and the Shannon-system, is threatened by pollution and invasive species such as curly waterweed, zebra mussel, and freshwater clam.
White Lough, also known as White Lake and Bairds Shore, is a freshwater lake in the northeast of Ireland. It is located in County Monaghan in the catchment of the River Erne. The lake is also used as a raw water source for Stranooden Group Water Scheme.
Keshcarrigan Lough is a mesotrophic freshwater lake near Keshcarrigan in County Leitrim, Ireland. Known for quality coarse fishing, the lake allows bank fishing from concrete stands on the northern shore, two with wheelchair access. The ecology of Keshcarrigan Lough, and other county waterways, is threatened by curly waterweed, zebra mussel, and freshwater clam invasive species.