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This is an alphabetical list of loughs (lakes) on the island of Ireland. It also shows a table of the largest loughs. The word lough is pronounced like loch (/lɒk, lɒx/) and comes from the Irish loch, meaning lake.

According to the Environmental Protection Agency, there are an estimated 12,000 lakes in the Republic of Ireland, covering an area of more than 1,200 square kilometres.[1] The largest lough, by area, in Ireland is Lough Neagh. Lough Corrib is the second largest, and is the largest in the Republic. The largest lough, by water volume, is Lough Neagh, with Lough Mask being the largest in the Republic.

The list below contains only those loughs that are of geographic, geological, or historical importance and almost all of them are over a square kilometre in area. It includes loughs that are in Northern Ireland and the Republic of Ireland. Those partly or wholly within Northern Ireland are marked with an asterisk (*).

Largest Irish lakes

The largest freshwater loughs in Ireland are:[2][3][4]

More information Rank (by area), Lake ...
Rank (by area)LakeArea km2 (sq mi)Mean Depth
m (ft)		Max Depth
m (ft)		Volume
×106m3 (×106cu ft)		Shoreline
km (mi)[5]		County/Counties
1Lough Neagh*396 (153)9.0 (29.5)25 (82)3,528 (124,600)186 (116)Antrim, Down, Armagh, Tyrone, Londonderry
2Lough Corrib[6]176 (68)6.5 (21)50.9 (167)1,158 (40,900)392 (244)Galway and Mayo
3Lough Derg (Shannon)[7]130 (50)7.6 (25)36 (118)988 (34,900)229 (142)Tipperary, Clare and Galway
4Lower Lough Erne*[8]109 (42)11.9 (39)69 (226)1,300 (46,000)270 (170)Fermanagh
5Lough Ree[9]105 (41)6.2 (20)35 (115)651 (23,000)192 (119)Roscommon, Longford and Westmeath
6Lough Mask[10]83 (32)15.0 (49.2)58 (190)1,300 (46,000)[11]192 (119)Mayo and Galway
7Lough Conn[12]50 (19)7.0 (23.0)34 (112)350 (12,000)108 (67)Mayo
8Lough Allen[13]35 (14)10.9 (36)42.7 (140)391 (13,800)53 (33)Leitrim and Roscommon
9Upper Lough Erne*[14]34 (13)2.3 (7.5)27 (89)79 (2,800)255 (158)Fermanagh
10Lough Melvin*[15]23 (8.9)7.8 (26)44 (144)175 (6,200)54 (34)Fermanagh and Leitrim
11Lough Leane[16]20 (7.7)13.4 (44)60 (200)269 (9,500)51 (32)Kerry
12Poulaphouca Reservoir[17]20 (7.7)6.8 (22)135 (4,800)64 (40)Wicklow
13Lough Sheelin[18]19 (7.3)4.4 (14)15 (49)83.6 (2,950)36 (22)Westmeath, Cavan, Meath
14Lough Carra16 (6.2)1.8 (5.9)18 (59)28.8 (1,020)75 (47)County Mayo
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Muckross Lake (the middle lake of the Killarney lakes) is the deepest Irish lake, with a maximum depth of 75 metres.[19]

(Volume = Area * Mean Depth)

Freshwater lakes

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Lough Bunny in The Burren
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Fishing boats on Inchiquin, Lough Corrib.
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Lough Cullin, County Mayo under Nephin
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Lough Dan
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Donegal's Lough Derg and Station Island
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Lough Derravaragh and Knockeyon
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Derryclare Lough
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Mayo's Doo Lough and Delphi Pass
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Glanmore Lake
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Glenbeg Lough
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Glencar Lough and Benbulbin
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Lough Gur
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Lough Inagh and the Twelve Bens
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Lough Key and Castle Island
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Kylemore Lough and Diamond Hill
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Lough Lene and Turgesius Island
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Lower Lough MacNean and Inishee Island
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Maumeen Lough and the Twelve Bens
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Lough Tay and the Wicklow Mountains
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Lough Veagh in the Glenveagh Valley
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Lough Oughter at Killykeen

Lakes with the county/counties where they are situated and their area in square kilometres. Most of the Republic of Ireland lake areas are taken from the Environmental Protection Agency's A Reference based Typology and Ecological Assessment System for Irish Lakes (pp. 10–13)[20]

More information Lake, County ...
LakeCountyArea (km2)Area (sq mi)
Lough AcooseCounty Kerry0.660.25
Lough Aleck MoreCounty Donegal0.610.24
Lough AlewnaghtaCounty Clare and County Galway0.550.21
Lough AllenCounty Leitrim33.613.0
Lough AlluaCounty Cork1.360.53
Lough AnaserdCounty Galway0.870.34
Annaghmore LoughCounty Roscommon0.530.20
Lough AnureCounty Donegal1.590.61
Ardderry LoughCounty Galway0.810.31
Lough ArrowCounty Sligo and County Roscommon12.474.81
Lough AtedaunCounty Clare0.380.15
Lough AtorickCounty Clare10.39
Aughrusbeg LoughCounty Galway0.50.19
Ballycuirke LoughCounty Galway0.740.29
Ballynahinch LakeCounty Galway1.70.66
Ballysaggart LoughCounty Tyrone*
Lough BaneCounty Meath and Westmeath0.750.29
Lough BarraCounty Donegal0.630.24
Lough BegCounty Londonderry and County Antrim*4.71.8
Belhavel LoughCounty Leitrim1.010.39
Lough BeltraCounty Mayo4.11.6
Lough BodergCounty Roscommon and County Leitrim5.12.0
Lough BofinCounty Galway0.920.36
Lough BofinCounty Leitrim and County Roscommon2.61.0
Lough BrackleyCounty Cavan1.70.66
Lough BunnyCounty Clare1.030.40
Cam LoughCounty Armagh0.720.28
Caragh LakeCounty Kerry4.91.9
Lough CarraCounty Mayo15.66.0
Carrigadrohid LakeCounty Cork5.82.2
Carrickaport LoughCounty Leitrim0.460.18
Carrowmore LakeCounty Mayo9.33.6
Castlefore LoughCounty Leitrim0.210.081
Cavetown LoughCounty Roscommon0.640.25
Clea LakeCounty Armagh*
Cloonacleigha LoughCounty Sligo0.620.24
Cloonagh LoughCounty Roscommon0.710.27
Cloonaghlin LoughCounty Kerry1.280.49
Middle Cloonee LoughCounty Kerry0.710.27
Lough ConnCounty Mayo48.518.7
Lough ConwayCounty Leitrim0.60.23
Lough CorribCounty Galway and County Mayo172.966.8
Lough CorryCounty Roscommon1.50.58
Lough CraghyCounty Donegal0.50.19
Cross LoughCounty Mayo1.110.43
Lough CullaunCounty Clare0.50.19
Lough CullaunyheedaCounty Clare1.550.60
Lough CullinCounty Mayo10.23.9
Lough CurraneCounty Kerry10.44.0
Lough CutraCounty Galway3.91.5
Lough DanCounty Wicklow10.39
Glendalough Upper LakeCounty Wicklow
Lough DergCounties Clare, Galway and Tipperary122.247.2
Lough DergCounty Donegal8.83.4
Lough DerravaraghCounty Westmeath9.13.5
Derryclare LoughCounty Galway2.240.86
Doo LoughCounty Clare1.30.50
Doo LoughCounty Mayo1.550.60
Dromore LoughCounty Clare0.490.19
Drumaleague LoughCounty Leitrim0.050.019
Durnesh LoughCounty Donegal0.700.27
Lough Eidin (Drumharlow Lake)County Roscommon2.81.1
Dunglow LoughCounty Donegal0.610.24
Lough DunleweyCounty Donegal1.10.42
Easky LoughCounty Sligo1.20.46
Lough EgishCounty Monaghan1.20.46
Enagh LoughCounty Londonderry*
Lough EnnellCounty Westmeath11.64.5
Lower Lough ErneCounty Fermanagh*10942
Upper Lough ErneCounty Fermanagh*3413
Errit LoughCounty Roscommon0.820.32
Lough EskeCounty Donegal3.81.5
Lough FeeCounty Galway1.740.67
Lough FeeaghCounty Mayo41.5
Lough FernCounty Donegal1.810.70
Lough FinnCounty Donegal1.20.46
Lough ForbesCounty Longford31.2
Lough FunshinaghCounty Roscommon3.81.5
Lough FurnaceCounty Mayo1.80.69
Lough GaraCounty Sligo12.64.9
Garadice LoughCounty Leitrim3.91.5
Gartan LoughCounty Donegal2.050.79
Lough GillCounty Sligo13.85.3
Lough GillCounty Kerry1.40.54
Glanmore LakeCounty Kerry0.570.22
Glen LoughCounty Donegal1.680.65
Glenade LoughCounty Leitrim0.70.27
Glenbeg LoughCounty Cork0.660.25
Glencar LoughCounty Leitrim and County Sligo1.20.46
Glendollagh LoughCounty Galway0.830.32
Lough GlenicmurrinCounty Galway1.70.66
Lough GolaghCounty Donegal0.60.23
Lough GownaCounty Cavan and County Longford4.21.6
Lough GraneyCounty Clare3.71.4
Lough GuitaneCounty Kerry2.460.95
Lough Gullion[21]County Armagh1.30.50
Lough GurCounty Limerick0.80.31
Lough InaghCounty Galway3.11.2
Inchicronan LoughCounty Clare1.20.46
Inchiquin LoughCounty Clare1.080.42
Inchiquin LoughCounty Kerry0.770.30
Lough InniscarraCounty Cork4.91.9
LoughinislandCounty Down*
Lough IronCounty Westmeath
Lough Island ReavyCounty Down*10.39
Islandeady LoughCounty Mayo1.390.54
Keshcarrigan LoughCounty Leitrim0.390.15
Lough KeyCounty Roscommon8.93.4
Kilglass LoughCounty Roscommon2.020.78
Killinure LoughCounty Westmeath2.61.0
Kiltooris LoughCounty Donegal0.430.17
Lough KinaleCounties Longford, Westmeath and Cavan1.950.75
Kindrum LoughCounty Donegal0.610.24
Kylemore LoughCounty Galway1.320.51
Lady's Island LakeCounty Wexford31.2
Lough LeaneCounty Kerry19.787.64
Lough LeneCounty Westmeath4.21.6
Lettercraffroe LoughCounty Galway0.820.32
Levally LoughCounty Mayo1.230.47
Lickeen LoughCounty Clare0.840.32
Lower Lough MacNean[22]County Fermanagh4.61.8
Upper Lough MacNean[23]County Fermanagh*, County Cavan and County Leitrim103.9
Lough MarraveCounty Leitrim0.10.039
Lough MaskCounty Mayo and County Galway83.432.2
Maumeen LoughCounty Galway0.560.22
Maumwee LoughCounty Galway0.280.11
Lough MeelaCounty Donegal0.570.22
Lough MeelaghCounty Roscommon1.160.45
Lough MelvinCounty Fermanagh* and County Leitrim22.18.5
Lough MourneCounty Donegal0.670.26
Muckanagh LoughCounty Clare0.960.37
Lough MucknoCounty Monaghan3.61.4
Muckross LakeCounty Kerry2.71.0
Lough Nacung UpperCounty Donegal2.10.81
Lough NafooeyCounty Galway2.50.97
Lough NeaghCounties Antrim, Down, Armagh, Tyrone and Londonderry396153
Lough O'FlynnCounty Roscommon1.370.53
Lough OughterCounty Cavan6.62.5
Lough OwelCounty Westmeath10.23.9
Poulaphouca ReservoirCounty Wicklow19.57.5
Portmore LoughCounty Antrim*2.861.10
Lough RamorCounty Cavan7.12.7
Lough ReaCounty Galway31.2
Lough ReeCounty Westmeath, County Longford and County Roscommon106.141.0
Rinn LoughCounty Leitrim1.650.64
Ross LakeCounty Galway1.40.54
Lough ScurCounty Leitrim1.140.44
Lough SheelinCounty Cavan, County Meath and County Westmeath18.27.0
Lough SheeverCounty Westmeath
Lough ShindillaCounty Galway0.70.27
Lough SillanCounty Cavan1.60.62
Lough SkeanCounty Roscommon1.140.44
St. John's LoughCounty Leitrim1.460.56
Tacumshin LakeCounty Wexford3.21.2
Lough TaltCounty Sligo1.10.42
Lough TayCounty Wicklow0.50.19
Templehouse LoughCounty Sligo1.20.46
Upper Lake, KillarneyCounty Kerry1.70.66
Upper Lough SkeaghCounty Cavan0.610.24
Urlaur LoughCounty Mayo1.150.44
Lough VeaghCounty Donegal2.611.01
White LoughCounty Monaghan0.540.21
Loughs Yganavan and NambrackdarrigCounty Kerry
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Brackish loughs

An example of a brackish lagoon is Lady's Island Lake, County Wexford

Turloughs

Main article: Turlough (lake)

Reservoirs

Sea loughs

Fjords

See also

References

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