Fuar Tholl Mòr has several small lochans nestling within it. On the eastern flanks of the mountain are the larger bodies of water of Loch a' Chlaidheimh and Loch nam Breac Dearga. The southern slopes of the mountain descend to the former site of Strathmore Lodge on Loch Monar, made famous by Iain Thomson in his book Isolation Shepherd. The lodge and over 60 other dwellings were flooded when the level of the loch was raised as part of the Hydroelectricity scheme in the late 1950s. All drainage from Maoile Lunndaidh is to the east coast of Scotland via the long glens of Strathfarrar and Strathconon, reaching the Beauly Firth and the Cromarty Firth.