"Watch the water" true meaning is watch The People.

Referring to the populace as water has been common cabal symbology for a long time, they don't call it "currency" for no reason.

Qs arrival was meant to give us a heads up of the new battle for hearts and minds. Q arrived on scene to forewarn us of the changing of the tides. He wanted us to witness and understand the blue drought, and the red wave. The red tsunami is more like it.

"Don't rock the boat" is to not reveal secrets lest you be drowned by the people.

"The swamp" means dirty corrupted water/people hence "drain it"

If you look back through history you'll find it is littered with references to the public at large as being water in one form or another

The sea sees