The River Dulnain is a major left bank tributary of the River Spey

River Spey

The River Spey is a river in the northeast of Scotland, the second longest and the fastest-flowing river in Scotland...

 in northeast Scotland

Scotland

Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

. It rises in the eastern part of the Monadhliath Mountains

Monadhliath Mountains

The Monadhliath Mountains, or Monadh Liath , are a range of mountains in Scotland. The name derives from Scottish Gaelic, and means "grey mountains". Running in a northeast to southwest direction, the mountains lie on the western side of Strathspey, to the west of the Cairngorms and to the south...

 (57.1516°N 4.1288°W) and flows in a generally northeastward direction through uninhabited country to Sluggan, where it is crossed by a high stone arch bridge constructed by General Wade to carry a military road

Military road

A military road is a type of road built by the United States Army. They are used mostly by soldiers, government officials, and sometimes the public. Most military roads are not accessible by public vehicles, however, some are designated as state highways that maintains it. Some military roads are...

. (The route now forms a part of Route 7 of the National Cycle Network

National Cycle Network

The National Cycle Network is a network of cycle routes in the United Kingdom.The National Cycle Network was created by the charity Sustrans , and aided by a £42.5 million National Lottery grant. In 2005 it was used for over 230 million trips.Many routes hope to minimise contact with motor...

.) Turning more easterly, the Dulnain passes beneath the modern A9 road

A9 road

The A9 is a major road running from the Falkirk council area in central Scotland to Thurso in the far north, via Stirling, Bridge of Allan, Perth and Inverness. At 273 miles , it is the longest road in Scotland and the fifth-longest A-road in the United Kingdom...

 which bypasses Carrbridge

Carrbridge

Carrbridge is a village in Badenoch and Strathspey in the Scottish Highlands. It lies off the A9 road on the A938 road, west of Skye of Curr, southeast of Findhom Bridge, near Bogroy.It has the oldest stone bridge in the Highlands and nearby ancient pine forest contains the Landmark Forest...

, the mainline railway and, In Carrbridge itself, the bridge carrying the B9153 road (former A9) which gives the village its name. The final section flowing eastnortheast to the village of Dulnain Bridge

Dulnain Bridge

Dulnain Bridge is a village in Strathspey, next to the meeting of the River Dulnain and the River Spey, three miles south-west of Grantown-on-Spey, in the Scottish Highlands and the Highland council area.-History:...

 is accompanied by the A938 road. The river empties into the Spey (57.2936°N 3.6538°W) after passing beneath the A95 road

A95 road

The A95 road is a major road of north-east Scotland connecting the A9 road in the Highlands to the A98 road near the coast.It leaves the A9 four miles north of Aviemore.It then goes:*through Drumullie;...

and the disused bridge of the former Strathspey railway.

Etymology

The name derives from the Scottish Gaelic tuil which means flood and ean which means stream and is perhaps descriptive of its reaction to rainfall.

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