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The loch is orientated in an east to west direction, and is over one mile (1.6 kilometres) long. Its breadth (north-south) reaches almost a half a mile and the surface area is 191 acres (0.3 square miles; 0.8 square kilometres). The centre of the loch is the deepest part, approximately, 5 ft
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Bathymetrical Survey of the
Scottish Fresh-Water Lochs, ed. Sir John Murray K.C.B., F.R.S., D.Sc., and Laurence Pullar F.R.S.E., F.R.G.S., publ. Challenger Office, Edinburgh, 1910; Vol 2, part 2, pp. 17-18 and Vol. 5, Plate 5:: St John's Loch, Loch
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The overflow of the loch is through the Burn of
Inkstack, which exits from the north shore. This flows northwards, joining the Burn of Ham, and flowing into the sea on the north coast of Caithness, at
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Caithness OS Name Books, 1871-1873 Caithness volume 03 OS1/7/3/102 scotlandsplaces.gov.uk/digital-volumes/ordnance-survey-name-books – retrieved Feb 2024
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Wildfowl in Great
Britain, ed. G. L. Atkinson -Willes (for the Wildfowl Trust), Publ. Her Majesty's Stationery Office, London 1963; p.225
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Ordnance
Gazetteer of Scotland, by Francis H. Groome; publ. Thomas C. Jack, Edinburgh,1901. (Article on Dunnet)
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and Loch Heilen are the two largest lochs in the parish. It is about two miles (3.2 kilometres) inland from
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Ordnance Survey 1:25,000 maps of Great
Britain, Sheet ND27 & Part of ND17 - B, Publ. 1963
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The loch has had various spellings - ,Hayland, Haelan, Hailan, Heilen.
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The loch has an abundance of ducks and other wild birds, especially
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to the west, which is on the north coast of
Scotland. The town of
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twenty-one million cu ft (590,000 m)
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247:is about eight miles (13 kilometres) to the west.
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186:191 acres (0.298 sq mi; 0.77 km)
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227:is a loch in the civil parish of
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16:A loch in Caithness, Scotland
416:Freshwater lochs of Scotland
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194:2.5 ft (0.76 m)
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421:Highland geography stubs
218:113 ft (34 m)
178: mi (0.80 km)
161:1 mi (1.6 km)
360:location article is a
202:5 ft (1.5 m)
102:58.59167°N 3.27278°W
254:(1.5 m) deep.
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411:Lochs of Caithness
107:58.59167; -3.27278
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207:Water volume
183:Surface area
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225:Loch Heilen
158:Max. length
123:freshwater
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80:Coordinates
57:Loch Heilen
24:Loch Heilen
405:Categories
280:References
241:Dunnet Bay
199:Max. depth
166:Max. width
90:58°35′30″N
233:Caithness
93:3°16′22″W
73:Caithness
358:Highland
272:and the
149:Scotland
69:Location
266:Mallard
173:⁄
316:Heilen
270:Wigeon
245:Thurso
229:Dunnet
356:This
144:Basin
362:stub
125:loch
119:Type
259:Ham
231:in
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