It only took ~24 gallons* for an ounce of almonds back in 2014. I guess that wasn't scary enough, so the number had to get pumped up to 97 gallons.

https://www.motherjones.com/environment/2014/02/wheres-calif...

*1.1 gallon per almond, ~24 almonds per ounce

I wonder how this scales for almond milk?

Turning one ounce of almonds into four ounces of almond milk takes three ounces of water