■ Geography
Garadice Lough is located 8 kilometres (5 mi) east of Ballinamore in South Leitrim. It is about 3 km (2 mi) wide from west to east and covers an area of 3.89 square kilometres (1.5 sq mi). The lake has three islands, two of which are named: Church Island and Cherry Island (Irish: Cloch-inse-na-dtorc).
■ Hydrology
Garadice Lough now forms part of the Shannon–Erne Waterway. Its inflow was formerly named the Yellow River and the outflow was the Woodford River (Irish: Sruth Gráinne, meaning ’the Gravelly Stream’ or ’the Gravelly River’； also anglicised as the River Gráinne or the Graine River). The Woodford River flows out of Little Garadice Lake, which is on the eastern edge of Garadice Lough, with the river flowing north-eastwards via Ballyconnell, eventually emptying into Upper Lough Erne near Teemore in the south of County Fermanagh.
■ Natural history
Fish present in Garadice Lough include tench, roach, bream and pike. Large pike have been caught here weighing 10 kg (22 lb) or more.
■ Ecology
The water quality was reported to be satisfactory c. 2001 – c. 2003 with a mesotrophic rating, improving to oligotrophic status c. 2004 – c. 2006, before dropping back to mesotrophic rating c. 2007 – c. 2009. Zebra mussel infestation is present. The ecology of Garadice Lough, and other Irish waterways, remains threatened by curly waterweed, and freshwater clam invasive species.
■ History
The earliest surviving mention of the lake is in the 9th century Vita tripartita Sancti Patricii, in connection with the crossing of the lake by Saint Patrick on his way to destroy the idol Crom Cruach. In medieval times Garadice Lough was known as Lough Finvoy (Irish: Loch Finn Mhagh, meaning ’The Lake of the White Plain’). The lake is mentioned several times in the Irish Annals- Annals of the Four Masters 1386 and Annals of Connacht 1257 ＆ 1418. In about 1257 the fortress ”Cloch-inse-na-dtorc, in Lough Finvoy, was burned by O’Rourke” (a King of West Breifne).
□■ Primary sources
□■ Secondary sources

北東 5.2Km	Magh Slécht
北西 6.0Km	Shannon–Erne Waterway
北東 7.3Km	Killycluggin Stone
北東 9.7Km	Brackley Lough
南西 10.8Km	Lough Conway
南西 12.9Km	Castlefore Lough
南西 15.7Km	Lough Scur
南西 15.7Km	Keshcarrigan Lough
南東 16.6Km	Killykeen Forest Park
南東 17.5Km	Cloughoughter Castle

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