Lough Arrow

Lough Arrow Loch Arbhach
Toward the Bricklieve Mountains
Location in Ireland
Location	County Sligo, County Roscommon
Coordinates	54°3′12″N 8°19′15″W / 54.05333°N 8.32083°W / 54.05333; -8.32083Coordinates: 54°3′12″N 8°19′15″W / 54.05333°N 8.32083°W / 54.05333; -8.32083
Lake type	mesotrophic
Primary inflows	Mainly spring-fed, also some streams
Primary outflows	Unshin River
Catchment area	65.76 km2 (25 sq mi)
Basin countries	Ireland
Max. length	6 km (3.7 mi)
Max. width	2 km (1.2 mi)
Surface area	12.47 km2 (4.81 sq mi)
Average depth	9 m (30 ft)
Max. depth	33 m (108 ft)
Surface elevation	53 m (174 ft)
Islands	4
References

Lough Arrow (Irish: Loch Arbhach) is a freshwater lake in the northwest of Ireland. This large, scenic lake covers an area of 12.47 square kilometres (4.8 sq mi) and lies mostly in County Sligo with a smaller part in County Roscommon. It is a popular trout fishing lake.

Lough Arrow lies mostly in south County Sligo about 24 kilometres (15 mi) southeast of Sligo and 6 km (4 mi) northwest of Boyle. The Bricklieve Mountains rise west of the lake.

Lough Arrow is about 6 km (3.7 mi) long from north to south and 2 km (1.2 mi) wide. The lake has four islands: Annaghgowla, Inishmore, Inishbeg and Muck.

Lough Arrow is a mesotrophic lake. It is fed mainly by springs but also by a number of streams entering on the lake's western and southern sides. The lake drains north into the Unshin River. The mean lake depth is 9 m (30 ft) with a maximum depth of 33 m (108 ft).

Fish present in Lough Arrow include brown trout, perch, roach, three-spined stickleback, pike, rudd, bream and the critically endangered European eel. A number of duck species winter at the lake including mallard, wigeon, teal, red-breasted merganser, tufted duck, pochard and goldeneye. Other bird species found at the lake include great crested grebe, little grebe, cormorant and mute swan.