Allt Coire an Tuim is a

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...

in the

Lochaber Lochaber ( ; gd, Loch Abar) is a name applied to a part of the Scottish Highlands. Historically, it was a provincial lordship consisting of the parishes of Kilmallie and Kilmonivaig, as they were before being reduced in extent by the creation ...

area of

Highland Highlands or uplands are areas of high elevation such as a mountainous region, elevated mountainous plateau or high hills. Generally speaking, upland (or uplands) refers to ranges of hills, typically from up to while highland (or highlands) is ...

Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the ...

, that is a

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...

Dubh Lighe Dubh Lighe is a long river in Lochaber, Highland (council area), Highland, Scotland that flows the Gleann Dubh Lighe glen (valley), before flowing into Loch Eil, itself giving waters to Loch Linnhe. Etymology ''Dub Lighe'' means "dark stream ...

. It flows through the Northwest Highlands of the

Scottish Highlands The Highlands ( sco, the Hielands; gd, a’ Ghàidhealtachd , 'the place of the Gaels') is a historical region of Scotland. Culturally, the Highlands and the Lowlands diverged from the Late Middle Ages into the modern period, when Lowland Sco ...

Course

Rising from a

drainage basin A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, t ...

between the mountains of Beinn an Tuim and Meall an Uillt Chaoil in the Northwest Highlands, Allt Coire an Tuim flows east into the

Gleann Dubh Lighe Gleann Dubh Lighe (also spelled Gleann Dubh-lighe) is a glen (valley) in Lochaber, Highland, Scotland, located at the foot of Streap in the Northwest Highlands mountain range. The Dubh Lighe river flows through the length of the valley. A frequen ...

glen A glen is a valley, typically one that is long and bounded by gently sloped concave sides, unlike a ravine, which is deep and bounded by steep slopes. Whittow defines it as a "Scottish term for a deep valley in the Highlands" that is "narrower ...

(valley), where it flows into Dubh Lighe.

References

Rivers of Highland {{Scotland-river-stub