A gallon is ~4 litres (two large bottles of soda) and an acre is a the small end of a soccer^H^H^H^H^H^H^H football-field (or half of a big one). For an acre-fo

A gallon is ~4 litres (two large bottles of soda) and an acre is a the small end of a soccer^H^H^H^H^H^H^H football-field (or half of a big one). For an acre-foot, that's all underwater, up to your shins. Or maybe you just stacked all the soda bottles next to each other, they're about a foot tall...