The Douglas Water is a river in Argyll

Argyll

Argyll , archaically Argyle , is a region of western Scotland corresponding with most of the part of ancient Dál Riata that was located on the island of Great Britain, and in a historical context can be used to mean the entire western coast between the Mull of Kintyre and Cape Wrath...

 in the southwest Scottish Highlands

Scottish Highlands

The Highlands is an historic region of Scotland. The area is sometimes referred to as the "Scottish Highlands". It was culturally distinguishable from the Lowlands from the later Middle Ages into the modern period, when Lowland Scots replaced Scottish Gaelic throughout most of the Lowlands...

. It emerges from the northeastern end of the diminutive Loch Dubh-ghlas and flows northeastwards through Coire Dubh-ghlas before turning east then southeast amongst extensive conifer plantations to the bridge which carries the A83 road over it. It turns east at this point and flows into the tidal Loch Fyne

Loch Fyne

Loch Fyne is a sea loch on the west coast of Argyll and Bute, Scotland. It extends inland from the Sound of Bute, making it the longest of the sea lochs...