It is a staggering geographic fact that Loch Ness contains more fresh water than all the lakes, rivers, and reservoirs in England and Wales combined. Despite not being the UK's largest lake by surface area (that’s Loch Lomond) or its deepest (Loch Morar), its massive volume is due to its sheer depth and steep, trench-like underwater profile. Holding approximately 7.5 cubic kilometers (263 billion cubic feet) of water, Loch Ness is so voluminous that it could theoretically fit the entire world's population inside it ten times over. This immense body of water stays at a consistent 6°C (43°F) year-round and is so deep that it never freezes, even in the harshest Scottish winters. The water's peat-stained, murky nature adds to the mystery, making it the perfect setting for the enduring legend of the Loch Ness Monster.