River Etive Cascades captured in moody December weather. The River Etive (Scottish Gaelic: Abhainn Ãite) rises on the peaks surrounding Rannoch Moor, with several tributary streams coming together at the Kings House Hotel, at the head of Glen Coe. From the Kings House, the Etive flows for about 18 km, reaching the sea loch, Loch Etive. The river and its tributaries are popular with whitewater kayakers and at high water levels it is a test piece of the area and a classic run.