I think I probably had 1.5 gallons of water in the tank.
That really bothers me, that I keep the tank full, and even removing the cap to gas up with 3/4 tank full, I hear the hiss of atmospheric pressure, and STILL the water got in, when the drain plugged up, at the filler neck...
I decanted off about 8 gallons of fuel, and filled the lawnmower, and my little sewing machine Nissan truck...