I think it's important to note that while you can divide the volume of blue and grey water used to make a ton of almonds by the mass of one shelled almond, and

I think it's important to note that while you can divide the volume of blue and grey water used to make a ton of almonds by the mass of one shelled almond, and get 1.1 gallons, you're ignoring kind of a lot of outputs of almond growing.