Lough Nacung Upper (Irish: Loch na Cuinge Uachtarach, meaning 'Upper Narrowness Lake' or 'Upper Lake of the Isthmus'), also known as Upper Lough Nacung, is a lough in Gaoth Dobhair, a district in the north-west of County Donegal in Ulster, the northern province in Ireland.[2][3] It connects Lough Dunlewey to Lough Nacung Lower, which drains into the Clady River.[2][4] Lough Nacung is a Special Area of Conservation.[5]

Lough Nacung Upper
View towards Lough Nacung Upper, with Errigal to the left.
Location in Ireland
Location	County Donegal, Ulster, Ireland
Coordinates	55.032°N 8.166°W / 55.032; -8.166
Lake type	natural freshwater lake
Native name	Loch na Cuinge Uachtarach  (Irish)
Primary inflows	Lough Dunlewey
Primary outflows	Lough Nacung Lower, to the Clady River
Catchment area	78.62 km2 (30.36 sq mi)[1]
Basin countries	Ireland
Max. length	2.72 miles (4.38 km)
Max. width	0.38 miles (0.61 km)
Surface area	2.08 km2 (0.80 sq mi)[1]
Surface elevation	59 m (194 ft)[1]
References	[1]

The name is derived from the Irish cuing, meaning 'Lake of the Isthmus' or 'narrow neck of land (as between two lakes)'.[3][6][7]

Wildlife

The main fish species are sea trout and salmon.[8][9]

See also

• List of loughs in Ireland

References