This list of lochs in Scotland includes the majority of bodies of standing freshwater named as lochs but only a small selection of the generally smaller, and very numerous, lochans. This list does not currently include the reservoirs of Scotland except where these are modifications of pre-existing lochs and retain the name "loch" or "lochan".
It has been estimated that there are at least 31,460 freshwater lochs (including lochans) in Scotland, and more than 7,500 in the Western Isles alone. [1] Whilst lochs are widespread throughout the country, they are most numerous within the Scottish Highlands and in particular in the former counties of Caithness, Sutherland and Ross and Cromarty. The majority of the larger lochs are linear in form; their distribution through the West Highlands reflects their origin in the glacial overdeepening of the straths and glens they now occupy.
Loch is a Scottish Gaelic word for a lake or fjord (cognate with the Irish Gaelic loch, which is anglicised as lough and with the older Welsh word for a lake, llwch) that has been borrowed by Scots and Scottish English to apply to such bodies of water, especially those in Scotland. Whilst "loch" or "lochan" is by far the most widespread name for bodies of standing water in Scotland, a number of other terms exist. The Lake of Menteith is the only natural body of freshwater called a "lake" in Scotland, (although it is also known as Loch Innis Mo Cholmaig in Gaelic) and there are one or two other man-made "lakes", the Lake of the Hirsel being an example. Numerous lochs are called "water", particularly in the Northern Isles, e.g. Roer Water in Shetland and Heldale Water in Orkney. These are not to be confused with similarly named rivers, particularly in the south of Scotland, e.g. Yarrow Water and Blackadder Water.
This table includes the twelve largest lochs by volume, area and length as listed by Murray and Pullar (1910). [2] [3] The volume of water in Loch Ness is nearly double that in all the lakes of England and Wales combined. [1] Murray and Pullar also note that the mean depth of Loch Ness is 57.4% of the maximum depth – higher than in any other large deep loch, with Loch Avich coming closest at 52.4%. [4] Lochs Maree, Shiel and Ness are recorded as being the narrowest of the large lochs in relation to their length. [5]
Loch | Volume (km3) | Volume (mi3) | Area (km2) | Area (mi2) | Length (km) | Length (mi) | Max. depth (m) | Max. depth (ft) | Mean depth (m) | Mean depth (ft) [6] |
---|---|---|---|---|---|---|---|---|---|---|
Loch Ness | 7.45 | 1.79 | 56 | 22 | 36.2 | 22.5 | 227 | 745 | 132 | 433 [4] |
Loch Lomond | 2.6 | 0.62 | 71 | 27 | 36 | 22 | 190 | 620 | 37 | 121 [7] |
Loch Morar | 2.3 | 0.55 | 26.7 | 10.3 | 18.8 | 11.7 | 310 | 1,020 | 87 | 285 [8] |
Loch Tay | 1.6 | 0.38 | 26.4 | 10.2 | 23 | 14 | 150 | 490 | 60.6 | 199 [9] |
Loch Awe | 1.2 | 0.29 | 39 | 15 | 41 | 25 | 94 | 308 | 32 | 105 [10] |
Loch Maree | 1.09 | 0.26 | 28.6 | 11.0 | 20 | 12 | 114 | 374 | 38 | 125 [5] |
Loch Ericht | 1.08 | 0.26 | 18.6 | 7.2 | 23 | 14 | 156 | 512 | 57.6 | 189 [9] |
Loch Lochy | 1.07 | 0.26 | 16 | 6.2 | 16 | 9.9 | 162 | 531 | 70 | 230 [11] |
Loch Rannoch | 0.97 | 0.23 | 19 | 7.3 | 15.7 | 9.8 | 134 | 440 | 51 | 167 [12] |
Loch Shiel | 0.79 | 0.19 | 19.5 | 7.5 | 28 | 17 | 128 | 420 | 40 | 130 [13] |
Loch Katrine | 0.77 | 0.18 | 12.4 | 4.8 | 12.9 | 8.0 | 151 | 495 | 43.4 | 142 [14] |
Loch Arkaig | 0.75 | 0.18 | 16 | 6.2 | 19.3 | 12.0 | 109 | 358 | 46.5 | 153 [15] |
Loch Shin | 0.35 | 0.084 | 22.5 | 8.7 | 27.8 | 17.3 | 49 | 161 | 15.5 | 51 [16] |
Neither the Loch of Stenness nor the Loch of Harray on Mainland Orkney is large enough to appear in the above table (Loch of Harray is 16th by area) but at higher stages of the tide they are connected to one another and to the marine waters of Hoy Sound. The former is the largest brackish lagoon in the UK [17] and the latter, whilst predominantly freshwater, does have a transition zone in the vicinity of the Bridge of Brodgar where the two are connected. [18] The two lochs together cover an area of 19.3 km2 (7.5 sq mi) [18] but have a volume of only 0.047 km3 (0.011 cu mi) as they are so shallow; Loch of Stenness has a maximum depth of 5.2 metres (17 ft). Although flow between the two lochs and the sea can be observed, the water levels only change slightly with the movements of the tide. [19]
In reaching an alphabetically arranged list, the words "loch" and "lochan" have been ignored as have articles and prepositions in both Gaelic (a', an, an t-, na, na h-, nam, nan etc.) and English (of, the etc.). Those that have been converted to reservoirs for water supply or in association with hydroelectric projects and whose levels have been artificially raised by the construction of dams or barrages are annotated as reservoir.
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There are a very large number of lochs on the islands of Scotland, with the greatest density occurring in the Outer Hebrides. North and South Uist and Lewis in particular have landscapes with a high percentage of freshwater and a maze and complexity of loch shapes. Harris has fewer large bodies of water but innumerable small lochans.
Those listed in this section are confined to the larger or otherwise notable lochs.
Loch Orasaigh in Lewis is only about 125 hectares (310 acres) in extent but the island of Rainish Eilean Mòr is probably the largest island in Scotland relative to the size of the body of water it sits in, as it takes up about 20% of the loch's surface area.
The meanings of the names are generally derived from Gaelic, Old Norse or Scots.
Loch | Meaning of name | Island | OS Grid ref. | Area (ha) | Area (acre) | Depth (m) | Depth (ft) | Notes [20] |
---|---|---|---|---|---|---|---|---|
Loch a' Phuill | Gaelic: Loch of the bog or pool [21] | Tiree | NL955415 | Located in the south west near Balephuil. | ||||
Loch Ascog | Norse: Loch of ash bay [21] | Bute | NS094626 | 44.7 | 110 | Located south of Rothesay. [22] | ||
Loch Bà | Mull | NM569376 | 324 | 800 | 44 | 144 [23] | ||
Loch Barabhat | Great Bernera | NB156353 | ||||||
Loch Bì | South Uist | NF766438 | 10 | 33 | South Uist's largest loch is in the north of the island and at 8 kilometres (5.0 mi) long it all but cuts the island in two. | |||
Loch of Boardhouse | Mainland Orkney | HY268264 | 244 | 600 | 5 | 16 [24] | In Birsay parish | |
Loch Carabhat | Grimsay | NF857566 | ||||||
Loch Carabhat | North Uist | NF846613 | 151 | 370 | 22.5 | 74 | North Uist's third largest loch [25] | |
Loch of Cliff | Unst | HP600117 | 104 | 260 | 6.5 | 21 | 5 kilometres (3.1 mi) long and the most northerly loch in Britain. [26] | |
Loch Coruisk | Gaelic: Loch of the corrie of water | Skye | NG482206 | 38.4 | 126 [27] [28] | Located in the heart of the Black Cuillin mountains on Skye. | ||
Loch Druidibeag | South Uist | NF791374 | 500 | 1,200 [29] | Part of the Loch Druidibeg National Nature Reserve on the west coast of South Uist. | |||
Loch Fad | Gaelic: Long loch | Bute | NS074616 | 71 | 180 | 11.5 | 38 [30] | Stocked with Brown and Rainbow Trout the loch is an SSSI. [31] |
Loch Fada | Colonsay | NR385955 | Colonsay's largest loch | |||||
Loch Fada Gobha | Lewis | NB245232 | 125 | 310 | 14 | 46 | This loch, which lies between Lochs Treabhal and Langavat, is 3 kilometres (1.9 mi) long. [32] | |
Loch Finlaggan | Loch of the white hollow [33] | Islay | NR387679 | Eilean Mor was an administration centre of the Lordship of the Isles during the 13th—15th centuries. The English name is derived from Gaelic, but the Gaelic name itself is Port an Eilein and means "island port". [33] | ||||
Loch Frisa | Mull | NM490480 | 430 | 1,100 | 62.5 | 205 | Mull's largest loch [34] | |
Loch of Girlsta | Mainland Shetland | HU433519 | 20 | 66 | ||||
Loch Gorm | Blue loch | Islay | NR229657 | Contains Loch Gorm Castle, once a stronghold of Clan Macdonald. | ||||
Loch of Harray | Norse: Loch of the mound | Mainland Orkney | HY295151 | 971 | 2,400 | 4 | 13 [35] | Closely linked to the Heart of Neolithic Orkney World Heritage site. |
Heldale Water | Hoy | ND259924 | One of the largest bodies of freshwater in Orkney not on the Mainland | |||||
Loch Langavat | Gaelic/Norse: Long lake [36] [37] | Lewis | NB197205 | 906.5 | 2,240 | 30 | 98 [38] | This loch lies at 33 metres (108 ft) above sea level, is over 11 kilometres (6.8 mi) long and is at the head of the Grimersta system. |
Loch Langavat | Gaelic/Norse: Long lake | Harris | NG044897 | |||||
Loch Leathan | Gaelic: Broad Loch | Skye | NG500507 | This loch to the east of Portree, which includes Loch Fada, is about 5 kilometres (3.1 mi) long. | ||||
Loch Mealt | Skye | NG507656 | Located south of Ellishadder, on the eastern side of the Trotternish peninsula | |||||
Loch Mòr | Gaelic: Big loch | Boreray | NF850813 | A shallow loch that make up about an eighth of the area of the island | ||||
Muckle Water | Scots: Big lake | Rousay | HY393901 | One of the largest bodies of freshwater in Orkney not on the Mainland | ||||
Loch nan Cinneachan | Gaelic: Loch of the "heathen" or "gentiles". [39] | Coll | NM187562 | Contains the crannog Dùn Anlaimh | ||||
Loch Olabhat | Benbecula | NF798509 | One of Benbecula's larger lochs, it contains numerous islands. | |||||
Loch Orasaigh | Gaelic: Tidal island loch? | Lewis | NB388281 | Contains Rainish Eilean Mòr (see above). | ||||
Loch Righ Mòr | Gaelic: Great loch of the king | Jura | NR540852 | |||||
Loch Sgadabhagh | Norse: Possibly Loch of tax bay | North Uist | NF847685 | 453 | 1,120 | 15 | 49 [40] | According to Murray and Pullar (1910) "there is probably no other loch in Britain which approaches Loch Scadavay in irregularity and complexity of outline." [40] |
Loch an Sgoltaire | Colonsay | NR386972 | ||||||
Loch of Spiggie | Shetland | HU370165 | 86 | 210 | 12.5 | 41 [41] | Part of an RSPB Nature reserve, the surface is only just over a metre above sea level. | |
Loch of Stenness | Norse: Loch of the headland of the stone | Mainland Orkney | HY280126 | 647 | 1,600 | 5 | 16 [42] | The largest brackish lagoon in the UK, [17] the Stones of Stenness are on the south east shore. |
Loch of St Tredwell | Loch of St Tredwell | Papa Westray | HY492508 | 10 | 33 | Named after St Triduana, the loch's waters were traditionally believed to be medicinal. [43] | ||
Loch Suaineabhal | Loch of Sweyn's Fell | Lewis | NB069297 | 226 | 560 [44] | 66.7 | 219 | This glaciated loch basin has a mean depth of 33 metres (108 ft) and is the most voluminous on Lewis. [45] The loch may be the deepest on any offshore island in the British Isles. |
Loch of Swannay | Orkney | HY309283 | 244 | 600 | 5 | 16 | Located in the north west of Mainland Orkney there are numerous stony shoals in the loch. [24] | |
Loch of Tankerness | Norse: Possibly Loch of Tannskári's point. [46] | Mainland Orkney | HY514092 | 60 | 150 | 2 | 6 ft 7 in | North east of Kirkwall, the loch's mean depth is only 1.4 metres (4.6 ft). [47] |
Loch Tanna | Arran | NR921430 | Arran's largest loch is 321 metres above sea level. | |||||
Loch of Tingwall | Norse: Loch of the field of the parliament | Mainland Shetland | HU416425 | 43 | 110 | 12 | 39 [48] | West of Lerwick |
Loch Trealabhal | Lewis | NB277236 | 157 | 390 | 10.5 | 34 [49] | Another shallow Hebridean loch with a complex shape. | |
Loch of Watlee | Norse: | Unst | HP592054 |
Less substantial lochs include the following.
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