Loch Achtriochtan or Loch Trychardan is a small shallow freshwater loch located to the east of Glencoe village in Lochaber in the Scottish Highlands.^[1] It is now under the care of the National Trust for Scotland. During the 18th century, the loch flooded and nearby inhabitants had to abandon the area.

Quick Facts Location, Coordinates ...

Loch Achtriochtan
A lake with a wide stream flowing towards the camera, and steep mountainsides
Loch Achtriochtan Location in Lochaber
Location	Near Glencoe, Highland, Scotland
Coordinates	56.6654°N 5.0336°W / 56.6654; -5.0336
Type	Freshwater loch
Primary inflows	River Coe
Primary outflows	River Coe
Catchment area	2,576 hectares (6,370 acres)
Max. length	0.32 km (0.20 mi)
Max. width	0.28 km (0.17 mi)
Surface area	15 ha (37 acres)[1]
Average depth	15.7 ft (4.8 m)[1]
Water volume	24,060,518.1 cu ft (681,318.00 m3)[1]
Shore length1	2 km (1.2 mi) [1]
Surface elevation	86 m (282 ft)[1]
Islands	0
1 Shore length is not a well-defined measure.

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Loch Achtriochtan is a small fresh water lochan in Glencoe, fed by the River Coe, which eventually flows into Loch Leven at Invercoe. To the south of the Loch is Achnambeithach Cottage, accessible from the A82 road. To the north, there are the mountains Sgorr nam Fiannaidh and Stob Coire Leith and, to the south, the Three Sisters. Loch Actriochtan sits about three miles from Glencoe village.