To the north, the mountain descends to Glen Garry with the trees of the Glengarry forest appearing on the slopes below the 350 metre contour. There are steep slopes to the east which go down to the Bealach Easain, a col with a height of 548 metres which connects to the adjacent Munro of Sròn a' Choire Ghairbh, the col contains a small lochan at its highest point. All drainage from Ben Tee reaches the Great Glen but goes to both the west and east coast of Scotland. Rainfall on the northern part of the hill goes via Glen Garry and the River Garry to reach Loch Oich from where it flows north east through Loch Ness to reach the east coast at the Moray Firth. Rainfall on the southern slopes goes via the Kilfinnan Burn to reach Loch Lochy where it flows south west to reach the sea loch of Loch Linnhe on the west coast.
