Loch Ness "world's biggest spirit level"

The BBC have posted a piece on how scientists have used Loch Ness to measure the minute effects of tidal forces on the loch's water levels. The sun and moon's combined gravitational force raises and drops the water level by as much as 1.5mm in a day. The other interesting note is that the Foyers power station alone does the same thing by 4cm a day.

I would add my own note that when using a trap camera before and after heavy rain, the difference in loch levels was even more noticeable.